Modified short interfering nucleic acid (siNA) molecules and uses thereof

SEQUENCE LISTING

The instant application contains a Sequence Listing which has been submitted electronically in ASCII format and is hereby incorporated by reference in its entirety. Said ASCII copy, created on Feb. 11, 2022, is named 122400-0259_SL.txt and is 165,787 bytes in size.

FIELD OF THE INVENTION

Described are short interfering nucleic acid (siNA) molecules comprising modified nucleotides, compositions, and uses thereof.

BACKGROUND OF THE INVENTION

RNA interference (RNAi) is a biological response to double-stranded RNA that mediates resistance to both endogenous parasitic and exogenous pathogenic nucleic acids, and regulates the expression of protein-coding genes. The short interfering nucleic acids (siNA), such as siRNA, have been developed for RNAi therapy to treat a variety of diseases. For instance, RNAi therapy has been proposed for the treatment of metabolic diseases, neurodegenerative diseases, cancer, and pathogenic infections (See e.g., Rondindone, Biotechniques, 2018, 40 (4S), doi.org/10.2144/000112163, Boudreau and Davidson, Curr Top Dev Biol, 2006, 75:73-92, Chalbatani et al., Int J Nanomedicine, 2019, 14:3111-3128, Arbuthnot, Drug News Perspect, 2010, 23(6):341-50, and Chernikov et. al., Front. Pharmacol., 2019, doi.org/10.3389/fphar.2019.00444, each of which are incorporated by reference in their entirety). However, major limitations of RNAi therapy are the ability to effectively deliver siRNA to target cells and the degradation of the siRNA.

The present disclosure improves the delivery and stability of siNA molecules by providing siNA molecules comprising modified nucleotides. The siNA molecules of the present disclosure provide optimized combinations and numbers of modified nucleotides, nucleotide lengths, design (e.g., blunt ends or overhangs, internucleoside linkages, conjugates), and modification patterns for improving the delivery and stability of siNA molecules.

SUMMARY OF THE INVENTION

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.

In some embodiments, the first nucleotide sequence comprises 16, 17, 18, 19, 20, 21, 22, 23, or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, 70%, 75%, 80%, 85%, 90%, 95% or 100% of the nucleotides in the first nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, between 2 to 15 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 10 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 2, 3, 4, 5, or 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, less than or equal to 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between about 2 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 2 to 20 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 5 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 10 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 12 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides.

In some embodiments, the second nucleotide sequence comprises 16, 17, 18, 19, 20, 21, 22, 23, or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, 70%, 75%, 80%, 85%, 90%, 95% or 100% of the nucleotides in the second nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, between 2 to 15 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 10 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 2, 3, 4, 5, or 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, less than or equal to 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between about 2 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 2 to 20 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 5 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 10 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 12 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (iii) comprises 1 or more phosphorothioate internucleoside linkage; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (iii) comprises 1 or more phosphorothioate internucleoside linkage.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide, wherein the siNA further comprises a phosphorylation blocker, a galactosamine, or 5′-stabilized end cap.

In some embodiments, at least 1, 2, 3, 4, 5, 6, or 7 nucleotides at position 3, 5, 7, 8, 9, 10, 11, 12, and/or 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 3 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 5 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 7 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 8 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 9 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 12 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, nucleotide at position 10 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 11 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.

In some embodiments, the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides. In some embodiments, the alternating 1:3 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:3 modification pattern occur consecutively. In some embodiments, at least two of the alternating 1:3 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand.

In some embodiments, the nucleotides in the second nucleotide sequence are arranged in an alternating 1:2 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides. In some embodiments, the alternating 1:2 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:2 modification pattern occurs consecutively. In some embodiments, at least two of the alternating 1:2 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:2 modification pattern begins at nucleotide position 2, 5, 8, 14, and/or 17 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 5 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 8 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 17 from the 5′ end of the antisense strand.

Disclosed herein is a short interfering nucleic acid (siNA) molecule represented by Formula (VIII):

5′-A_n¹B_n²A_n³B_n⁴A_n⁵B_n⁶A_n⁷B_n⁸A_n⁹-3′
3′-C_q¹A_q²B_q³A_q⁴B_q⁵A_q⁶B_q⁷A_q⁸B_q⁹A_q¹⁰B_q¹¹A_q¹²-5′

wherein:

the top strand is a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises 15 to 30 nucleotides;

the bottom strand is an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises 15 to 30 nucleotides;

each A is independently a 2′-O-methyl nucleotide or a nucleotide comprising a 5′-stabilized end cap or a phosphorylation blocker;

B is a 2′-fluoro nucleotide;

C represents overhanging nucleotides and is a 2′-O-methyl nucleotide;

n¹=1-4 nucleotides in length;

each n², n⁶, n⁸, q³, q⁵, q⁷, q⁹, q¹¹, and q¹²is independently 0-1 nucleotides in length;

each n³and n⁴is independently 1-3 nucleotides in length;

n⁵is 1-10 nucleotides in length;

n⁷is 0-4 nucleotides in length;

each n⁹, q¹, and q²is independently 0-2 nucleotides in length;

q⁴is 0-3 nucleotides in length;

q⁶is 0-5 nucleotides in length;

q⁸is 2-7 nucleotides in length; and

q¹⁰is 2-11 nucleotides in length.

Disclosed herein is a short interfering nucleic acid (siNA) molecule represented by Formula (IX):

5′-A_2-4B₁A_1-3B_2-3A_2-10B_0-1A_0-4B_0-1A_0-2-3′
3′-C₂A_0-2B_0-1A_0-3B_0-1A_0-5B_0-1A_2-7B₁A_2-11B₁A₁-5′

wherein:

the top strand is a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises 15 to 30 nucleotides;

the bottom strand is an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises 15 to 30 nucleotides;

each A is independently a 2′-O-methyl nucleotide or a nucleotide comprising a 5′-stabilized end cap or a phosphorylation blocker;

B is a 2′-fluoro nucleotide;

C represents overhanging nucleotides and is a 2′-O-methyl nucleotide.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7-9, 12 and 17 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, 10, 11, and 13-16 from the 5′ end of the first nucleotide sequence; and (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides. In some embodiments, the first nucleotide sequence consists of 19 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence. In some embodiments, the second nucleotide sequence consists of 21 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 19-21 from the 5′ end of the second nucleotide sequence. In some embodiments, the alternating 1:3 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:3 modification pattern occur consecutively. In some embodiments, at least two of the alternating 1:3 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-17 from the 5′ end of the first nucleotide sequence; and (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides. In some embodiments, the first nucleotide sequence consists of 19 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence. In some embodiments, the second nucleotide sequence consists of 21 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 19-21 from the 5′ end of the second nucleotide sequence. In some embodiments, the alternating 1:3 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:3 modification pattern occur consecutively. In some embodiments, at least two of the alternating 1:3 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-17 from the 5′ end of the first nucleotide sequence; and (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:2 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides. In some embodiments, the first nucleotide sequence consists of 19 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence. In some embodiments, the second nucleotide sequence consists of 21 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the second nucleotide sequence. In some embodiments, the alternating 1:2 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:2 modification pattern occur consecutively. In some embodiments, at least two of the alternating 1:2 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:2 modification pattern begins at nucleotide position 2, 5, 8, 14, and/or 17 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 5 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 8 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 17 from the 5′ end of the antisense strand.

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5, 9-11, and 14 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6-8, and 12-17 from the 5′ end of the first nucleotide sequence; and (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 2 and 14 from the 5′ end of the second nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 3-13, and 15-17 from the 5′ end the second nucleotide sequence. In some embodiments, the first nucleotide sequence consists of 21 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the first nucleotide sequence. In some embodiments, the second nucleotide sequence consists of 23 nucleotides. In some embodiments, 2′-O-methyl nucleotides are at positions 18-23 from the 5′ end of the second nucleotide sequence.

In some embodiments, any of the sense strands disclosed herein further comprise a TT sequence adjacent to the first nucleotide sequence.

In some embodiments, any of the sense strands disclosed herein further comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or more phosphorothioate internucleoside linkages. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 5′ end of the first nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 5′ end of the first nucleotide sequence.

In some embodiments, any of the antisense strands disclosed herein further comprise TT sequence adjacent to the second nucleotide sequence. In some embodiments, the antisense strand further comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or more phosphorothioate internucleoside linkages. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 5′ end of the second nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 5′ end of the second nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 3′ end of the second nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 3′ end of the second nucleotide sequence.

In some embodiments, the first nucleotide from the 5′ end of any of the first nucleotide sequences disclosed herein comprises a 5′ stabilizing end cap.

In some embodiments, the first nucleotide from the 5′ end of any of the second nucleotide sequences disclosed herein comprise a 5′ stabilizing end cap.

In some embodiments, the first nucleotide from the 5′ end of any of the first nucleotide sequences disclosed herein comprises a phosphorylation blocker.

In some embodiments, the first nucleotide from the 5′ end of any of the second nucleotide sequences disclosed herein comprises a phosphorylation blocker.

In some embodiments, any of the first nucleotide sequences or second nucleotide sequences disclosed herein comprise at least one modified nucleotide selected from

embedded image

where R is H or alkyl (or AmNA(N-Me)) when R is alkyl);

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and

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wherein B is a nucleobase.

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising:

(a) a phosphorylation blocker of Formula (IV):

embedded image

wherein

R¹is a nucleobase,

R⁴is —O—R³⁰or —NR³¹R³²,

R³⁰is C₁-C₈substituted or unsubstituted alkyl; and

R³¹and R³²together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring; and

(b) a short interfering nucleic acid (siNA). In some embodiments, the siNA is any of the siNAs disclosed herein. In some embodiments, the siNA comprises any of the sense strands, first nucleotide sequences, antisense strands, or second nucleotide sequences disclosed herein. In some embodiments, the siNA comprises any of the sense strands disclosed herein. In some embodiments, the siNA comprises any of the antisense strand disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence selected from any one of SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence selected from any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense sequence selected from any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense sequence selected from any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA comprises a ds-siNA sequence selected from any one of ds-siNA-001 to ds-siNA-0178. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilizing nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising:

(a) a 5′-stabilized end cap of Formula (Ia):

embedded image

wherein

R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

embedded image

—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is hydrogen; or

R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z;

n is 1, 2, 3, or 4;

Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴, R²¹and R²²are independently hydrogen or C₁-C₆alkyl; R²¹and R²²together form an oxo group;

R²³is hydrogen or C₁-C₆alkyl;

R²⁴is —SO₂R²⁵or —C(O)R²⁵; or

R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring;

R²⁵is C₁-C₆alkyl; and

m is 1, 2, 3, or 4; and

(b) a short interfering nucleic acid (siNA). In some embodiments, the siNA comprises any of the sense strands disclosed herein. In some embodiments, the siNA comprises any of the antisense strand disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence selected from any one of SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence selected from any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense sequence selected from any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense sequence selected from any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA comprises a ds-siNA sequence selected from any one of ds-siNA-001 to ds-siNA-0178. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilizing nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising:

(a) a 5′-stabilized end cap of Formula (Ib):

embedded image

wherein

R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising: (a) a 5′-stabilized end cap selected from the group consisting of Formula (1) to Formula (15), Formula (9X) to Formula (12X), and Formula (9Y) to Formula (12Y):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H; and (b) a short interfering nucleic acid (siNA). In some embodiments, the siNA comprises any of the sense strands disclosed herein. In some embodiments, the siNA comprises any of the antisense strand disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence selected from any one of SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence selected from any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense sequence selected from any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense sequence selected from any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA comprises a ds-siNA sequence selected from any one of ds-siNA-001 to ds-siNA-0178. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilizing nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising: (a) a 5′-stabilized end cap selected from the group consisting of Formulas (1A)-(15A), Formulas (9B)-(12B), Formulas (9AX)-(12AX), Formulas (9AY)-(12AY), Formulas (9BX)-(12BX), and Formulas (9BY)-(12BY):

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and (b) a short interfering nucleic acid (siNA). In some embodiments, the siNA comprises any of the sense strands disclosed herein. In some embodiments, the siNA comprises any of the antisense strand disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence selected from any one of SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence selected from any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense sequence selected from any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense sequence selected from any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA comprises a ds-siNA sequence selected from any one of ds-siNA-001 to ds-siNA-0178. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilizing nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising:

(a) a 5′-stabilized end cap of Formula (Ic):

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wherein

R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

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—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is hydrogen; or

R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z;

n is 1, 2, 3, or 4;

Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴, or —NR²³SO₂R²⁴;

R²¹and R²²either are independently hydrogen or C₁-C₆alkyl, or R²¹and R²²together form an oxo group;

R²³is hydrogen or C₁-C₆alkyl;

R²⁴is —SO₂R²⁵or —C(O)R²⁵; or

R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring;

R²⁵is C₁-C₆alkyl; and

m is 1, 2, 3, or 4; and

(b) a short interfering nucleic acid (siNA). In some embodiments, the siNA comprises any of the sense strands disclosed herein. In some embodiments, the siNA comprises any of the antisense strand disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence selected from any one of SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence selected from any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense sequence selected from any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense sequence selected from any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA comprises a ds-siNA sequence selected from any one of ds-siNA-001 to ds-siNA-0178. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilizing nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising:

(a) a 5′-stabilized end cap selected from the group consisting of Formula (21) to Formula (35):

Disclosed herein is a short-interfering nucleic acid (siNA) molecule comprising: (a) a 5′-stabilized end cap selected from the group consisting of Formulas (21A)-(35A), Formulas (29B)-(32B), Formulas (29AX)-(32AX), Formulas (29AY)-(32AY), Formulas (29BX)-(32BX), and Formulas (29BY)-(32BY):

Disclosed herein is a short interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilizing nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Disclosed herein is a interfering nucleic acid (siNA) molecule comprising: (a) a sense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444; and (b) an antisense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539.

In some embodiments, any of the siNA disclosed herein further comprise a phosphorylation blocker.

In some embodiments, the phosphorylation blocker has the structure of Formula (IV):

In some embodiments, R⁴is —OCH₃or —N(CH₂CH₂)₂O.

In some embodiments, the phosphorylation blocker is attached to the 5′ end of the sense strand.

In some embodiments, the phosphorylation blocker is attached to the 5′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.

In some embodiments, the phosphorylation blocker is attached to the 3′ end of the sense strand.

In some embodiments, the phosphorylation blocker is attached to the 3′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.

In some embodiments, the phosphorylation blocker is attached to the 5′ end of the antisense strand. In some embodiments, the phosphorylation blocker is attached to the 5′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker. In some embodiments, the phosphorylation blocker is attached to the 3′ end of the antisense strand. In some embodiments, the phosphorylation blocker is attached to the 3′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.

In some embodiments, any of the siNAs disclosed herein further comprise a conjugated moiety. In some embodiments, the conjugated moiety comprises a galactosamine. In some embodiments, the galactosamine is N-acetylgalactosamine (GalNAc) of Formula (VII):

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wherein each n is independently 1 or 2. In some embodiments, the galactosamine is N-acetylgalactosamine (GalNAc) of Formula (VI):

In some embodiments, any of the siNAs disclosed herein further comprise a 5′-stabilized end cap. In some embodiments, the 5′-stabilized end cap is a 5′ vinyl phosphonate or deuterated 5′ vinyl phosphonate. In some embodiments, the 5′-stabilized end cap has the structure of Formula (Ia):

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wherein

R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

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independently is a nucleobase, aryl, heteroaryl, or H. In some embodiments, the 5′-stabilized end cap is selected from the group consisting of Formulas (1A)-(15A), Formulas (9B)-(12B), Formulas (9AX)-(12AX), Formulas (9AY)-(12AY), Formulas (9BX)-(12BX), and Formulas (9BY)-(12BY):

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In some embodiments, the 5′-stabilized end cap is selected from the group consisting of Formula (21) to Formula (35):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H. In some embodiments, the 5′-stabilized end cap is selected from the group consisting of Formulas (21A)-(35A), Formulas (29B)-(32B), Formulas (29AX)-(32AX), Formulas (29AY)-(32AY), Formulas (29BX)-(32BX), and Formulas (29BY)-(32BY):

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In some embodiments, the 5′-stabilized end cap is attached to the 5′ end of the antisense strand. In some embodiments, the 5′-stabilized end cap is attached to the 5′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker. In some embodiments, the 5′-stabilized end cap is attached to the 5′ end of the sense strand. In some embodiments, the 5′-stabilized end cap is attached to the 5′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

In some embodiments, any of the siNAs, sense strands, first nucleotide sequences, antisense strands, or second nucleotide sequences disclosed herein further comprise at least one thermally destabilizing nucleotides. In some embodiments, any of the antisense strands disclosed herein further comprise at least one thermally destabilizing nucleotide selected from:

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In some embodiments, any of the sense strands disclosed herein comprise at least one thermally destabilizing nucleotide selected from:

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In some embodiments, any of the first nucleotide sequences disclosed herein further comprise at least one thermally destabilizing nucleotide selected

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In some embodiments, any of the second nucleotide sequences disclosed herein further comprise at least one thermally destabilizing nucleotide selected from:

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In some embodiments, any of the modified nucleotides disclosed herein is a thermally destabilizing nucleotide.

In some embodiments, any of the siNAs disclosed herein specifically downregulate or reduce expression of a target gene. In some embodiments, the target gene is a viral gene. In some embodiments, the viral gene is from a DNA virus. In some embodiments, the DNA virus is a double-stranded DNA (dsDNA) virus. In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV). In some embodiments, the HBV is selected from HBV genotypes A-J. In some embodiments, the target gene is selected from the S gene or X gene of the HBV.

In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides within positions 200-720 or 1100-1700 of SEQ ID NO: 410. In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides within positions 200-280, 300-445, 460-510, 650-720, 1170-1220, 1250-1300, or 1550-1630 of SEQ ID NO: 410. In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides within positions 200-230, 250-280, 300-330, 370-400, 405-445, 460-500, 670-700, 1180-1210, 1260-1295, 1520-1550, or 1570-1610 of SEQ ID NO: 410. In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides starting at position 203, 206, 254, 305, 375, 409, 412, 415, 416, 419, 462, 466, 467, 674, 676, 1182, 1262, 1263, 1268, 1526, 1577, 1578, 1580, 1581, 1583, or 1584 of SEQ ID NO: 410.

In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides within positions 200-720 or 1100-1700 of SEQ ID NO: 410. In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides within positions 200-280, 300-445, 460-510, 650-720, 1170-1220, 1250-1300, or 1550-1630 of SEQ ID NO: 410. In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides within positions 200-230, 250-280, 300-330, 370-400, 405-445, 460-500, 670-700, 1180-1210, 1260-1295, 1520-1550, or 1570-1610 of SEQ ID NO: 410. In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides starting at position 203, 206, 254, 305, 375, 409, 412, 415, 416, 419, 462, 466, 467, 674, 676, 1182, 1262, 1263, 1268, 1526, 1577, 1578, 1580, 1581, 1583, or 1584 of SEQ ID NO: 410.

In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260.

In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306.

In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444.

In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539.

In some embodiments, at least one end of the siNA is a blunt end.

In some embodiments, at least one end of the siNA comprises an overhang, wherein the overhang comprises at least one nucleotide.

In some embodiments, both ends of the siNA comprise an overhang, wherein the overhang comprises at least one nucleotide.

In some embodiments, the siNA is selected from ds-siNA-001 to ds-siNA-0178.

In some embodiments, at least one 2′-fluoro nucleotide or 2′-O-methyl nucleotide is a 2′-fluoro or 2-O-methyl nucleotide mimic of Formula (V):

In some embodiments, the 2′-fluoro or 2′-O-methyl nucleotide mimic is a nucleotide mimic of Formula (16)-Formula (20):

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wherein R¹is a nucleobase and R²is independently F or —OCH₃.

Further disclosed herein are compositions comprising any of the siNAs disclosed herein. In some embodiments, the siNA targets an S gene of HBV. In some embodiments, the siNA specifically downregulates or reduces expression of the S gene of HBV. In some embodiments, the siNA targets an X gene of HBV. In some embodiments, the siNA specifically downregulates or reduces expression of the X gene of HBV. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Further disclosed herein are compositions comprising 2, 3, 4, 5, 6, 7, 8, 9, 10 or more of any of the siNAs disclosed herein. In some embodiments, at least 1, 2, 3, 4, 5, or more siNAs target an S gene of HBV. In some embodiments, at least 1, 2, 3, 4, 5, or more siNAs specifically downregulate or reduce expression of the S gene of HBV. In some embodiments, at least 1, 2, 3, 4, 5, or more siNAs target an X gene of HBV. In some embodiments, at least 1, 2, 3, 4, 5, or more siNAs specifically downregulate or reduce expression of the X gene of HBV. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

In some embodiments, any of the compositions disclosed herein further comprise an additional HBV treatment agent. In some embodiments, the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy. In some embodiments, the oligonucleotide therapy is an additional siNA. In some embodiments, the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178. In some embodiments, the oligonucleotide therapy is an antisense oligonucleotide (ASO), NAPs, or STOPs. In some embodiments, the ASO is ASO 1 or ASO 2. In some embodiments, the ASO specifically targets the S gene of HBV. In some embodiments, the ASO specifically targets the X gene of HBV. In some embodiments, the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158.

In some embodiments, any of the compositions disclosed herein further comprise a liver disease treatment agent. In some embodiments, the liver disease treatment agent is selected from a peroxisome proliferator-activator receptor (PPAR) agonist, farnesoid X receptor (FXR) agonist, lipid-altering agent, and incretin-based therapy. In some embodiments, the PPAR agonist is selected from a PPARα agonist, dual PPARα/δ agonist, PPARγ agonist, and dual PPARα/γ agonist. In some embodiments, the dual PPARα agonist is a fibrate. In some embodiments, the PPARα/δ agonist is elafibranor. In some embodiments, the PPARγ agonist is a thiazolidinedione (TZD). In some embodiments, TZD is pioglitazone. In some embodiments, the dual PPARα/γ agonist is saroglitazar. In some embodiments, the FXR agonist is obeticholic acis (OCA). In some embodiments, the lipid-altering agent is aramchol. In some embodiments, the incretin-based therapy is a glucagon-like peptide 1 (GLP-1) receptor agonist or dipeptidyl peptidase 4 (DPP-4) inhibitor. In some embodiments, the GLP-1 receptor agonist is exenatide or liraglutide. In some embodiments, the DPP-4 inhibitor is sitagliptin or vildagliptin.

Further disclosed herein are methods of treating a disease in a subject in need thereof, comprising administering to the subject any of the siNAs disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

Further disclosed herein are methods of treating a disease in a subject in need thereof, comprising administering to the subject any of the compositions disclosed herein. In some embodiments, the composition comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more of any of the siNAs disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein. In some embodiments, the composition further comprises any of the additional HBV treatment agents disclosed herein. In some embodiments, the disease is a viral disease. In some embodiments, the viral disease is caused by a DNA virus. In some embodiments, the DNA virus is a double stranded DNA (dsDNA) virus. In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV). In some embodiments, the HBV is selected from HBV genotypes A-J. In some embodiments, the method further comprises administering an additional HBV treatment agent. In some embodiments, the siNA or the composition and the additional HBV treatment agent are administered concurrently. In some embodiments, the siNA or the composition and the additional HBV treatment agent are administered sequentially. In some embodiments, the siNA or the composition is administered prior to administering the additional HBV treatment agent. In some embodiments, the siNA or the composition is administered after administering the additional HBV treatment agent. In some embodiments, the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy. In some embodiments, the oligonucleotide therapy is an additional siNA. In some embodiments, the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178. In some embodiments, the oligonucleotide therapy is an antisense oligonucleotide (ASO), NAPs, or STOPs. In some embodiments, the ASO is ASO 1 or ASO 2. In some embodiments, the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158.

In some embodiments, the disease is a liver disease. In some embodiments, the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC). In some embodiments, the NAFLD is nonalcoholic steatohepatitis (NASH). In some embodiments, the method further comprises administering to the subject a liver disease treatment agent. In some embodiments, the liver disease treatment agent is selected from a peroxisome proliferator-activator receptor (PPAR) agonist, farnesoid X receptor (FXR) agonist, lipid-altering agent, and incretin-based therapy. In some embodiments, the PPAR agonist is selected from a PPARα agonist, dual PPARα/δ agonist, PPARγ agonist, and dual PPARα/γ agonist. In some embodiments, the dual PPARα agonist is a fibrate. In some embodiments, the PPARα/δ agonist is elafibranor. In some embodiments, the PPARγ agonist is a thiazolidinedione (TZD). In some embodiments, TZD is pioglitazone. In some embodiments, the dual PPARα/γ agonist is saroglitazar. In some embodiments, the FXR agonist is obeticholic acis (OCA). In some embodiments, the lipid-altering agent is aramchol. In some embodiments, the incretin-based therapy is a glucagon-like peptide 1 (GLP-1) receptor agonist or dipeptidyl peptidase 4 (DPP-4) inhibitor. In some embodiments, the GLP-1 receptor agonist is exenatide or liraglutide. In some embodiments, the DPP-4 inhibitor is sitagliptin or vildagliptin. In some embodiments, the siNA or composition and the liver disease treatment agent are administered concurrently. In some embodiments, the siNA or composition and the liver disease treatment agent are administered sequentially. In some embodiments, the siNA or composition is administered prior to administering the liver disease treatment agent. In some embodiments, the siNA or composition is administered after administering the liver disease treatment agent.

In some embodiments, the siNA or the composition is administered at a dose of at least 1 mg/kg, 2 mg/kg, 3 mg/kg, 4 mg/kg, 5 mg/kg, 6 mg/kg, 7 mg/kg, 8 mg/kg, 9 mg/kg, 10 mg/kg, 11 mg/kg, 12 mg/kg, 13 mg/kg 14 mg/kg, or 15 mg/kg. In some embodiments, the siNA or the composition is administered at a dose of between 0.5 mg/kg to 50 mg/kg, 0.5 mg/kg to 40 mg/kg 0.5 mg/kg to 30 mg/kg, 1 mg/kg to 50 mg/kg, 1 mg/kg to 40 mg/kg, 1 mg/kg to 30 mg/kg, 1 mg/kg to 20 mg/kg, 3 mg/kg to 50 mg/kg, 3 mg/kg to 40 mg/kg, 3 mg/kg to 30 mg/kg, 3 mg/kg to 20 mg/kg, 3 mg/kg to 15 mg/kg, 3 mg/kg to 10 mg/kg, 4 mg/kg to 50 mg/kg, 4 mg/kg to 40 mg/kg, 4 mg/kg to 30 mg/kg, 4 mg/kg to 20 mg/kg, 4 mg/kg to 15 mg/kg, 4 mg/kg to 10 mg/kg, 5 mg/kg to 50 mg/kg, 5 mg/kg to 40 mg/kg, 5 mg/kg to 30 mg/kg, 5 mg/kg to 20 mg/kg, 5 mg/kg to 15 mg/kg, or 5 mg/kg to 10 mg/kg.

In some embodiments, the siNA or the composition is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times. In some embodiments, the siNA or the composition is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times a day, at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times a week, or at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times a month. In some embodiments, the siNA or the composition are administered at least once every 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 days. In some embodiments, the siNA or the composition is administered for a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 days, or at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 40, 45, 50, 51, 52, 53, 54, or 55 weeks.

In some embodiments, the siNA or the composition is administered at a single dose of 5 mg/kg. In some embodiments, the siNA or the composition is administered at a single dose of 10 mg/kg. In some embodiments, the siNA or the composition is administered at three doses of 10 mg/kg once a week. In some embodiments, the siNA or the composition is administered at three doses of 10 mg/kg once every three days. In some embodiments, the siNA or the composition is administered at five doses of 10 mg/kg once every three days. In some embodiments, the siNA or the composition is administered at six doses of ranging from 1 mg/kg to 15 mg/kg, 1 mg/kg to 10 mg/kg, 2 mg/kg to 15 mg/kg, 2 mg/kg to 10 mg/kg, 3 mg/kg to 15 mg/kg, or 3 mg/kg to 10 mg/kg. In some embodiments, the first dose and second dose are administered at least 3 days apart. In some embodiments, the second dose and third dose are administered at least 4 days apart. In some embodiments, the third dose and fourth dose, fourth dose and fifth dose, or fifth dose and sixth dose are administered at least 7 days apart.

In some embodiments, any of the siNAs or the compositions disclosed herein are formulated as a particle or viral vector. In some embodiments, the siNA or the composition are administered in a particle or viral vector. In some embodiments, the viral vector is a vector of adenovirus, adeno-associated virus (AAV), alphavirus, flavivirus, herpes simplex virus, lentivirus, measles virus, picornavirus, poxvirus, retrovirus, or rhabdovirus. In some embodiments, the viral vector is a recombinant viral vector. In some embodiments, the viral vector is selected from AAVrh.74, AAVrh.10, AAVrh.20, AAV-1, AAV-2, AAV-3, AAV-4, AAV-5, AAV-6, AAV-7, AAV-8, AAV-9, AAV-10, AAV-11, AAV-12 and AAV-13. In some embodiments, the siNA or the composition is administered systemically. In some embodiments, the siNA or the composition is administered locally. In some embodiments, the siNA or the composition is administered intravenously, subcutaneously, or intramuscularly.

In some embodiments, any of the siRNAs or compositions disclosed herein are used in the manufacture of a medicament for treating a disease. In some embodiments, the disease is a viral disease. In some embodiments, the viral disease is caused by a DNA virus. In some embodiments, the DNA virus is a double stranded DNA (dsDNA virus). In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV). In some embodiments, the HBV is selected from HBV genotypes A-J. In some embodiments, an additional HBV treatment agent is further used in the manufacture of the medicament. In some embodiments, the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy. In some embodiments, the oligonucleotide therapy is an additional siNA. In some embodiments, the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178. In some embodiments, the oligonucleotide therapy is an antisense oligonucleotide (ASO), NAPs, or STOPs. In some embodiments, the ASO is ASO 1 or ASO 2. In some embodiments, the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158.

In some embodiments, any of the siRNAs or compositions disclosed herein are used in the manufacture of a medicament for treating a disease. In some embodiments, the disease is a liver disease. In some embodiments, the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC). In some embodiments, the NAFLD is nonalcoholic steatohepatitis (NASH). In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein. In some embodiments, a liver disease treatment agent is further used in the manufacture of the medicament. In some embodiments, the liver disease treatment agent is selected from a peroxisome proliferator-activator receptor (PPAR) agonist, farnesoid X receptor (FXR) agonist, lipid-altering agent, and incretin-based therapy. In some embodiments, the PPAR agonist is selected from a PPARα agonist, dual PPARα/δ agonist, PPARγ agonist, and dual PPARα/γ agonist. In some embodiments, the dual PPARα agonist is a fibrate. In some embodiments, the PPARα/δ agonist is elafibranor. In some embodiments, the PPARγ agonist is a thiazolidinedione (TZD). In some embodiments, TZD is pioglitazone. In some embodiments, the dual PPARα/γ agonist is saroglitazar. In some embodiments, the FXR agonist is obeticholic acis (OCA). In some embodiments, the lipid-altering agent is aramchol. In some embodiments, the incretin-based therapy is a glucagon-like peptide 1 (GLP-1) receptor agonist or dipeptidyl peptidase 4 (DPP-4) inhibitor. In some embodiments, the GLP-1 receptor agonist is exenatide or liraglutide. In some embodiments, the DPP-4 inhibitor is sitagliptin or vildagliptin.

In some embodiments, any of the siNAs disclosed herein is used as a medicament. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

In some embodiments, any of the compositions disclosed herein are used as a medicament. In some embodiments, the composition comprises any of the siNAs disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein.

In some embodiments, any of the siNAs disclosed herein are used in the treatment of a disease. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein. In some embodiments, the disease is a viral disease. In some embodiments, the viral disease is caused by a DNA virus. In some embodiments, the DNA virus is a double stranded DNA (dsDNA virus). In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV). In some embodiments, the HBV is selected from HBV genotypes A-J. In some embodiments, the disease is a liver disease. In some embodiments, the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC). In some embodiments, the NAFLD is nonalcoholic steatohepatitis (NASH).

In some embodiments, any of the compositions disclosed herein are used in the treatment of a disease. In some embodiments, the composition comprises any of the siNAs disclosed herein. In some embodiments, the siNA comprises a first nucleotide sequence. In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the siNA comprises a second nucleotide sequence. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the siNA comprises a sense strand. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the siNA comprises an antisense strand. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the siNA further comprises any of the 5′ end caps disclosed herein. In some embodiments, the siNA further comprises any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA further comprises any of the conjugated moieties disclosed herein. In some embodiments, the siNA further comprises any of the destabilized nucleotides disclosed herein. In some embodiments, the siNA further comprises any of the modified nucleotides disclosed herein. In some embodiments, the disease is a viral disease. In some embodiments, the viral disease is caused by a DNA virus. In some embodiments, the DNA virus is a double stranded DNA (dsDNA virus). In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV). In some embodiments, the HBV is selected from HBV genotypes A-J. In some embodiments, the disease is a liver disease. In some embodiments, the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC). In some embodiments, the NAFLD is nonalcoholic steatohepatitis (NASH).

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an exemplary siNA molecule.

FIG. 2 illustrates an exemplary siNA molecule.

FIGS. 3A-3G illustrate exemplary double-stranded siNA molecules.

FIG. 4 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with ds-siNA-0160, ds-siNA-0165, ds-siNA-0163, or ds-siNA-0166.

FIG. 5A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0160 (G03).

FIG. 5B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0160 (G15).

FIG. 5C shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0160 (G03).

FIG. 5D shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G03), or ds-siNA-0109 (G09).

FIGS. 5E-5F show a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0169 (G18).

FIG. 5G shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0169 (G04).

FIG. 5H shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0169 (G04).

FIG. 5I shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0169 (G04), or ds-siNA-0147 (G08).

FIG. 5J shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0166 (G06), or ds-siNA-0153 (G14).

FIG. 5K shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0163 (G05), or ds-siNA-0119 (G13).

FIG. 6A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G15), or ds-siNA-080 (G14).

FIG. 6B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0169 (G16), or ds-siNA-081 (G13).

FIG. 7A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0165 (G18), or ds-siNA-0127 (G17).

FIG. 7B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0168 (G20), or ds-siNA-0150 (G19).

FIG. 8A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G06), ASO 1 (G18), or a combination of ds-siNA-0160 and ASO 1 (G20).

FIG. 8B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G06), ASO 1 (G18), or a combination of ds-siNA-0160 and ASO 1 (G20).

FIG. 8C shows a graph of a synergy analysis of a combination therapy with unconjugated forms of ds-siNA-0164 and ASO 2 (e.g., ds-siNA-0160 and ASO 1 without GalNac).

FIG. 9 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0166 (G03), ds-siNA-0155 (G08), or ds-siNA-0157.

FIG. 10 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0165 (G10), ds-siNA-0160 (G06), or a combination therapy with ds-siNA-0160 and ds-siNA-0165 (G14).

FIG. 11 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0165 (G05), or ds-siNA-0144 (G11).

FIG. 12 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0163 (G04), ds-siNA-0122 (G09), or ds-siNA-0123 (G13).

FIG. 13 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 15) or ds-siNA-0147 (G 19).

FIG. 14 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 15, square), ds-siNA-0109 (G 21, circle), or ds-siNA-0172 (G 27, diamond).

FIG. 15 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 01, circle), ds-siNA-0109 (G 07, square), ds-siNA-0119 (G 11, triangle), or ds-siNA-0153 (G 13, diamond).

FIG. 16 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 01, circle), ASO 1 (G 20, square), ds-siNA-0147 (G 24, diamond), or a combination of ASO 1 and ds-siNA-0147 (G 25, triangle).

FIG. 17 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 01, circle), ASO 1 (G 20, square), ds-siNA-0109 (G 26, diamond), or a combination of ASO 1 and ds-siNA-0109 (G 27, triangle).

DETAILED DESCRIPTION OF THE INVENTION

Disclosed herein are short interfering nucleic acid (siNA) molecules comprising modified nucleotides. The siNA molecules described herein may be double-stranded siNA (ds-siNA) molecules. The siNA molecules described herein may comprise modified nucleotides selected from 2′-O-methyl nucleotides and 2′-fluoro nucleotides. The siNA molecules described herein may comprise 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more phosphorothioate internucleoside linkages. The siNA molecules described herein may comprise a phosphorylation blocker. The siNA molecules described herein may comprise a 5′-stabilized end cap. The siNA molecules described herein may comprise a galactosamine. The siNA molecules described herein may comprise one or more blunt ends. The siNA molecules described herein may comprise one or more overhangs.

Further disclosed herein are short interfering nucleic acid (siNA) molecules comprising (a) a phosphorylation blocker; and (b) a short interfering nucleic acid (siNA). The siNA may comprise at least 5 nucleotides. The nucleotides may be modified nucleotides, non-modified nucleotides, or any combination thereof. The nucleotides may be ribonucleotides, deoxyribonucleotides, or any combination thereof. The siNA may be single-stranded. Alternatively, the siNA is double-stranded. The double-stranded siNA may comprise one or more blunt ends. The double-stranded siNA may comprise one or more overhangs. The double-stranded siNA may comprise a blunt end and an overhang.

Further disclosed herein are short interfering nucleic acid (siNA) molecules comprising (a) a conjugated moiety; and (b) a short interfering nucleic acid (siNA). The siNA may comprise at least 5 nucleotides. The nucleotides may be modified nucleotides, non-modified nucleotides, or any combination thereof. The nucleotides may be ribonucleotides, deoxyribonucleotides, or any combination thereof. The siNA may be single-stranded. Alternatively, the siNA is double-stranded. The double-stranded siNA may comprise one or more blunt ends. The double-stranded siNA may comprise one or more overhangs. The double-stranded siNA may comprise a blunt end and an overhang.

Further disclosed herein are short interfering nucleic acid (siNA) molecules comprising (a) a 5′-stabilized end cap; and (b) a short interfering nucleic acid (siNA). The siNA may comprise at least 5 nucleotides. The nucleotides may be modified nucleotides, non-modified nucleotides, or any combination thereof. The nucleotides may be ribonucleotides, deoxyribonucleotides, or any combination thereof. The siNA may be single-stranded. Alternatively, the siNA is double-stranded. The double-stranded siNA may comprise one or more blunt ends. The double-stranded siNA may comprise one or more overhangs. The double-stranded siNA may comprise a blunt end and an overhang.

Further disclosed herein are short interfering nucleic acid (siNA) molecules comprising (a) at least one phosphorylation blocker, conjugated moiety, or 5′-stabilized end cap; and (b) a short interfering nucleic acid (siNA). The siNA may comprise at least 5 nucleotides. The nucleotides may be modified nucleotides, non-modified nucleotides, or any combination thereof. The nucleotides may be ribonucleotides, deoxyribonucleotides, or any combination thereof. The siNA may be single-stranded. Alternatively, the siNA is double-stranded. The double-stranded siNA may comprise one or more blunt ends. The double-stranded siNA may comprise one or more overhangs. The double-stranded siNA may comprise a blunt end and an overhang.

An exemplary siNA molecule of the present disclosure is shown in FIG. 1. As shown in FIG. 1, an exemplary siNA molecule comprises a sense strand (101) and an antisense strand (102). The sense strand (101) may comprise a first oligonucleotide sequence (103). The first oligonucleotide sequence (103) may comprise one or more phosphorothioate internucleoside linkages (109). The phosphorothioate internucleoside linkage (109) may be between the nucleotides at the 5′ or 3′ terminal end of the first oligonucleotide sequence (103). The phosphorothioate internucleoside linkage (109) may be between the first three nucleotides from the 5′ end of the first oligonucleotide sequence (103). The first oligonucleotide sequence (103) may comprise one or more 2′-fluoro nucleotides (110). The first oligonucleotide sequence (103) may comprise one or more 2′-O-methyl nucleotides (111). The first oligonucleotide sequence (103) may comprise 15 or more modified nucleotides independently selected from 2′-fluoro nucleotides (110) and 2′-O-methyl nucleotides (111). The sense strand (101) may further comprise a phosphorylation blocker (105). The sense strand (101) may further comprise a galactosamine (106). The antisense strand (102) may comprise a second oligonucleotide sequence (104). The second oligonucleotide sequence (104) may comprise one or more phosphorothioate internucleoside linkages (109). The phosphorothioate internucleoside linkage (109) may be between the nucleotides at the 5′ or 3′ terminal end of the second oligonucleotide sequence (104). The phosphorothioate internucleoside linkage (109) may be between the first three nucleotides from the 5′ end of the second oligonucleotide sequence (104). The phosphorothioate internucleoside linkage (109) may be between the first three nucleotides from the 3′ end of the second oligonucleotide sequence (104). The second oligonucleotide sequence (104) may comprise one or more 2′-fluoro nucleotides (110). The second oligonucleotide sequence (104) may comprise one or more 2′-O-methyl nucleotides (111). The second oligonucleotide sequence (104) may comprise 15 or more modified nucleotides independently selected from 2′-fluoro nucleotides (110) and 2′-O-methyl nucleotides (111). The antisense strand (102) may further comprise a 5′-stabilized end cap (107). The siNA may further comprise one or more blunt ends. Alternatively, or additionally, one end of the siNA may comprise an overhang (108). The overhang (108) may be part of the sense strand (101). The overhang (108) may be part of the antisense strand (102). The overhang (108) may be distinct from the first nucleotide sequence (103). The overhang (108) may be distinct from the second nucleotide sequence (104). The overhang (108) may be part of the first nucleotide sequence (103). The overhang (108) may be part of the second nucleotide sequence (104). The overhang (108) may comprise 1 or more nucleotides. The overhang (108) may comprise 1 or more deoxyribonucleotides. The overhang (108) may comprise 1 or more modified nucleotides. The overhang (108) may comprise 1 or more modified ribonucleotides. The sense strand (101) may be shorter than the antisense strand (102). The sense strand (101) may be the same length as the antisense strand (102). The sense strand (101) may be longer than the antisense strand (102).

An exemplary siNA molecule of the present disclosure is shown in FIG. 2. As shown in FIG. 2, an exemplary siNA molecule comprises a sense strand (201) and an antisense strand (202). The sense strand (201) may comprise a first oligonucleotide sequence (203). The first oligonucleotide sequence (203) may comprise one or more phosphorothioate internucleoside linkages (209). The phosphorothioate internucleoside linkage (209) may be between the nucleotides at the 5′ or 3′ terminal end of the first oligonucleotide sequence (203). The phosphorothioate internucleoside linkage (209) may be between the first three nucleotides from the 5′ end of the first oligonucleotide sequence (203). The first oligonucleotide sequence (203) may comprise one or more 2′-fluoro nucleotides (210). The first oligonucleotide sequence (203) may comprise one or more 2′-O-methyl nucleotides (211). The first oligonucleotide sequence (203) may comprise 15 or more modified nucleotides independently selected from 2′-fluoro nucleotides (210) and 2′-O-methyl nucleotides (211). The sense strand (201) may further comprise a phosphorylation blocker (205). The sense strand (201) may further comprise a galactosamine (206). The antisense strand (202) may comprise a second oligonucleotide sequence (204). The second oligonucleotide sequence (204) may comprise one or more phosphorothioate internucleoside linkages (209). The phosphorothioate internucleoside linkage (209) may be between the nucleotides at the 5′ or 3′ terminal end of the second oligonucleotide sequence (204). The phosphorothioate internucleoside linkage (209) may be between the first three nucleotides from the 5′ end of the second oligonucleotide sequence (204). The phosphorothioate internucleoside linkage (209) may be between the first three nucleotides from the 3′ end of the second oligonucleotide sequence (204). The second oligonucleotide sequence (204) may comprise one or more 2′-fluoro nucleotides (210). The second oligonucleotide sequence (204) may comprise one or more 2′-O-methyl nucleotides (211). The second oligonucleotide sequence (204) may comprise 15 or more modified nucleotides independently selected from 2′-fluoro nucleotides (210) and 2′-O-methyl nucleotides (211). The antisense strand (202) may further comprise a 5′-stabilized end cap (207). The siNA may further comprise one or more overhangs (208). The overhang (208) may be part of the sense strand (201). The overhang (208) may be part of the antisense strand. (202). The overhang (208) may be distinct from the first nucleotide sequence (203). The overhang (208) may be distinct from the second nucleotide sequence (204). The overhang (208) may be part of the first nucleotide sequence (203). The overhang (208) may be part of the second nucleotide sequence (204). The overhang (208) may be adjacent to the 3′ end of the first nucleotide sequence (203). The overhang (208) may be adjacent to the 5′ end of the first nucleotide sequence (203). The overhang (208) may be adjacent to the 3′ end of the second nucleotide sequence (204). The overhang (208) may be adjacent to the 5′ end of the second nucleotide sequence (204). The overhang (208) may comprise 1 or more nucleotides. The overhang (208) may comprise 1 or more deoxyribonucleotides. The overhang (208) may comprise a TT sequence. The overhang (208) may comprise 1 or more modified nucleotides. The overhang (208) may comprise 1 or more modified nucleotides disclosed herein (e.g., 2-fluoro nucleotide, 2′-O-methyl nucleotide, 2′-fluoro nucleotide mimic, 2′-O-methyl nucleotide mimic, or a nucleotide comprising a modified nucleobase). The overhang (208) may comprise 1 or more modified ribonucleotides. The sense strand (201) may be shorter than the antisense strand (202). The sense strand (201) may be the same length as the antisense strand (202). The sense strand (201) may be longer than the antisense strand (202).

FIGS. 3A-3G depict exemplary ds-siNA modification patterns. As shown in FIGS. 3A-3G, an exemplary ds-siNA molecule may have the following formula:

5′-A_n¹B_n²A_n³B_n⁴A_n⁵B_n⁶A_n⁷B_n⁸A_n⁹-3′
3′-C_q¹A_q²B_q³A_q⁴B_q⁵A_q⁶B_q⁷A_q⁸B_q⁹A_q¹⁰B_q¹¹A_q¹²-5′

wherein:

the top strand is a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises 15 to 30 nucleotides;

the bottom strand is an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises 15 to 30 nucleotides;

- each A is independently a 2′-O-methyl nucleotide or a nucleotide comprising a 5′ stabilized end cap or phosphorylation blocker;
- B is a 2′-fluoro nucleotide;
- C represents overhanging nucleotides and is a 2′-O-methyl nucleotide;
- n¹=1-4 nucleotides in length;
- each n², n⁶, n⁸, q³, q⁵, q⁷, q⁹, q¹¹, and q¹²is independently 0-1 nucleotides in length;
- each n³and n⁴is independently 1-3 nucleotides in length;
- n⁵is 1-10 nucleotides in length;
- n⁷is 0-4 nucleotides in length;
- each n⁹, q¹, and q²is independently 0-2 nucleotides in length;
- q⁴is 0-3 nucleotides in length;
- q⁶is 0-5 nucleotides in length;
- q⁸is 2-7 nucleotides in length; and
- q¹⁰is 2-11 nucleotides in length.
  
  The ds-siNA may further comprise a conjugated moiety. The conjugated moiety may comprise any of the galactosomines disclosed herein. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. The ds-siNA may further comprise a 5′-stabilizing end cap. The 5′-stabilizing end cap may be a vinyl phosphonate. The 5′-stabilizing end cap may be attached to the 5′ end of the antisense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. An exemplary ds-siNA molecule may have the following formula:
  
  5′-A_2-4B₁A_1-3B_2-3A_2-10B_0-1A_0-4B_0-1A_0-2-3′
  3′-C₂A_0-2B_0-1A_0-3B_0-1A_0-5B_0-1A_2-7B₁A_2-11B₁A₁-5′
  
  wherein:

- each A is independently a 2′-O-methyl nucleotide or a nucleotide comprising a 5′ stabilized end cap or phosphorylation blocker;
- B is a 2′-fluoro nucleotide;
- C represents overhanging nucleotides and is a 2′-O-methyl nucleotide.
  
  The ds-siNA may further comprise a conjugated moiety. The conjugated moiety may comprise any of the galactosomines disclosed herein. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. The ds-siNA may further comprise a 5′-stabilizing end cap. The 5′-stabilizing end cap may be a vinyl phosphonate. The vinyl phosphonate may be a deuterated vinyl phosphonate. The deuterated vinyl phosphonate may be a mono-deuterated vinyl phosphonate. The deuterated vinyl phosphonate may be a mono-di-deuterated vinyl phosphonate. The 5′-stabilizing end cap may be attached to the 5′ end of the antisense strand. The 5′-stabilizing end cap may be attached to the 3′ end of the antisense strand. The 5′-stabilizing end cap may be attached to the 5′ end of the sense strand. The 5′-stabilizing end cap may be attached to the 3′ end of the sense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker.

The exemplary ds-siNA shown in FIGS. 3A-3G comprise (i) a sense strand comprising 19-21 nucleotides; and (ii) an antisense strand comprising 21-23 nucleotides. The ds-siNA may further comprise (iii) a conjugated moiety, wherein the conjugated moiety is attached to the 3′ end of the antisense strand. The ds-siNA may comprise a 2 nucleotide overhang consisting of nucleotides at positions 20 and 21 from the 5′ end of the antisense strand. The ds-siNA may comprise a 2 nucleotide overhang consisting of nucleotides at positions 22 and 23 from the 5′ end of the antisense strand. The ds-siNA may further comprise 1, 2, 3, 4, 5, 6 or more phosphorothioate (ps) internucleoside linkages. At least one phosphorothioate internucleoside linkage may be between the nucleotides at positions 1 and 2 or positions 2 and 3 from the 5′ end of the sense strand. At least one phosphorothioate internucleoside linkage may be between the nucleotides at positions 1 and 2 or positions 2 and 3 from the 5′ end of the antisense strand. At least one phosphorothioate internucleoside linkage may be between the nucleotides at positions 19 and 20, positions 20 and 21, positions 21 and 22, or positions 22 and 23 from the 5′ end of the antisense strand. As shown in FIGS. 3A-3G, 4-6 nucleotides in the sense strand may be 2′-fluoro nucleotides. As shown in FIGS. 3A-3G, 2-5 nucleotides in the antisense strand may be 2′-fluoro nucleotides. As shown in FIGS. 3A-3G, 13-15 nucleotides in the sense strand may be 2′-O-methyl nucleotides. As shown in FIGS. 3A-3G, 14-19 nucleotides in the antisense strand may be 2′-O-methyl nucleotides. As shown in FIGS. 3A-3G, the ds-siNA does not contain a base pair between 2′-fluoro nucleotides on the sense and antisense strands. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker.

As shown in FIG. 3A, a ds-siNA may comprise (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7-9, 12, and 17 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, 10, 11, 13-16, 18, and 19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein nucleotides at positions 2 and 14 from the 5′ end of the antisense strand are 2′-fluoro nucleotides; and wherein nucleotides at positions 1, 3-13, and 15-21 are 2′-O-methyl nucleotides. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

As shown in FIG. 3B, a ds-siNA may comprise (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7, 8, and 17 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, 9-16, 18, and 19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein nucleotides at positions 2 and 14 from the 5′ end of the antisense strand are 2′-fluoro nucleotides; and wherein nucleotides at positions 1, 3-13, and 15-21 are 2′-O-methyl nucleotides. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

As shown in FIG. 3C, a ds-siNA may comprise (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7-9, 12 and 17 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, 10, 11, 13-16, 18, and 19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein the nucleotides in the antisense strand comprise an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. The ds-siNA may comprise 2-5 alternating 1:3 modification patterns on the antisense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

As shown in FIG. 3D, a ds-siNA may comprise (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein the nucleotides in the antisense strand comprise an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. The ds-siNA may comprise 2-5 alternating 1:3 modification patterns on the antisense strand. The alternating 1:3 modification pattern may start at the nucleotide at any of positions 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

As shown in FIG. 3E, a ds-siNA may comprise (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein the nucleotides in the antisense strand comprise an alternating 1:2 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. The ds-siNA may comprise 2-5 alternating 1:2 modification patterns on the antisense strand. The alternating 1:2 modification pattern may start at the nucleotide at any of positions 2, 5, 8, 14, and/or 17 from the 5′ end of the antisense strand. In some embodiments, the ds-siNA comprises (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein 2′-fluoro nucleotides are at positions 2, 5, 8, 14, and 17 from the 5′ end of the antisense strand, and wherein 2′-O-methyl nucleotides are at positions 1, 3, 4, 6, 7, 9-13, 15, 16, and 18-21 from the 5′ end of the sense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

As shown in FIG. 3F, a ds-siNA may comprise (a) a sense strand consisting of 19 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-19 from the 5′ end of the sense strand; (b) an antisense strand consisting of 21 nucleotides, wherein 2′-fluoro nucleotides are at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand, and wherein 2′-O-methyl nucleotides are at positions 1, 3-5, 7-13, 15, and 17-21 from the 5′ end of the antisense strand. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a f4P nucleotide. In some embodiments, at least 1, 2, 3, or 4 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, at least one of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, at least two of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, less than or equal to 3 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, less than or equal to 2 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 2 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 6 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 14 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 16 from the 5′ end of the antisense strand is a f4P nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a f2P nucleotide. In some embodiments, at least 1, 2, 3, or 4 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, at least one of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, at least two of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, less than or equal to 3 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, less than or equal to 2 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 2 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 6 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 14 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 16 from the 5′ end of the antisense strand is a f2P nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a fX nucleotide. In some embodiments, at least 1, 2, 3, or 4 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, at least one of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, at least two of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, less than or equal to 3 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, less than or equal to 2 of the 2′-fluoro-nucleotides at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 2 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 6 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 14 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, the 2′-fluoro-nucleotide at position 16 from the 5′ end of the antisense strand is a fX nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

As shown in FIG. 3G, a ds-siNA may comprise (a) a sense strand consisting of 21 nucleotides, wherein 2′-fluoro nucleotides are at positions 5, 9-11, 14, and 19 from the 5′ end of the sense strand, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6-8, 12, 13, 15-18, 20, and 21 from the 5′ end of the sense strand; and (b) an antisense strand consisting of 23 nucleotides, wherein 2′-flouro nucleotides are at positions 2 and 14 from the 5′ end of the antisense strand, and wherein 2′-O-methyl nucleotides are at positions 1, 3-13, and 15-23 from the 5′ end of the antisense strand. The ds-siNA may further comprise a conjugated moiety attached to the 3′ end of the sense strand. The ds-siNA may further comprise (i) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2 and positions 2 and 3 from the 5′ end of the sense strand; and (ii) phosphorothioate internucleoside linkages between the nucleotides at positions 1 and 2; positions 2 and 3; positions 19 and 20; and positions 20 and 21 from the 5′ end of the antisense strand. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a 5′ stabilizing end cap. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is further modified to contain a phosphorylation blocker. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 5′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the sense strand is a d2vd3 nucleotide. In some embodiments, the 2′-O-methyl nucleotide at position 1 from the 3′ end of the antisense strand is a d2vd3 nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand or antisense strand is a 2′-fluoro nucleotide mimic. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the sense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-fluoro nucleotides on the antisense strand is a f4P, f2P, or fX nucleotide. In some embodiments, at least 1, 2, 3, 4 or more 2′-O-methyl nucleotide on the sense or antisense strand is a 2′-O-methyl nucleotide mimic.

Any of the siNAs disclosed herein may comprise a sense strand and an antisense strand. The sense strand may comprise a first nucleotide sequence that is 15 to 30 nucleotides in length. The antisense strand may comprise a second nucleotide sequence that is 15 to 30 nucleotides in length.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 7 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 7, 9, 10, and/or 11 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 2 of the second nucleotide sequence is a 2′-fluoro nucleotide.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (iii) comprises 1 or more phosphorothioate internucleoside linkage; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (iii) comprises 1 or more phosphorothioate internucleoside linkage.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide, wherein the ds-siNA may further comprise a phosphorylation blocker, a galactosamine, or 5′-stabilized end cap.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (I) a sense strand comprising (A) a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (B) a phosphorylation blocker or a galactosamine; and (II) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (a) is 15 to 30 nucleotides in length; and (b) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (I) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (a) is 15 to 30 nucleotides in length; and (b) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (II) an antisense strand comprising (A) a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (B) a 5′-stabilized end cap.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (I) a sense strand comprising (A) a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (B) a phosphorylation blocker or a galactosamine; and (II) an antisense strand comprising (A) a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence: (i) is 15 to 30 nucleotides in length; and (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and (B) a 5′-stabilized end cap.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises a nucleotide sequence as shown in Tables 1-3; and (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises a nucleotide sequence as shown in Tables 1-3.

In some embodiments, the double-stranded short interfering nucleic acid (ds-siNA) molecule comprises: (a) a sense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444; and (b) an antisense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539. In some embodiments, the ds-siNA molecule comprises a double-stranded molecule as identified by the duplex ID (e.g., ds-siNA-001 to ds-siNA-0178) shown in Tables 6 and 10.

Further disclosed herein are compositions comprising two or more of the siNA molecules described herein.

Further disclosed herein are compositions comprising any of the siNA molecule described and a pharmaceutically acceptable carrier or diluent.

Further disclosed herein are compositions comprising two or more of the siNA molecules described herein for use as a medicament.

Further disclosed herein are compositions comprising any of the siNA molecule described and a pharmaceutically acceptable carrier or diluent for use as a medicament.

Further disclosed herein are methods of treating a disease in a subject in need thereof, the method comprising administering to the subject any of the siNA molecules described herein.

Further disclosed herein are uses of any of the siNA molecules described herein in the manufacture of a medicament for treating a disease.

Short Interfering Nucleic Acid (siNA) Molecules

As indicated above, the present disclosure provides siNA molecules comprising modified nucleotides. Any of the siNA molecules described herein may be double-stranded siNA (ds-siNA) molecules. The terms “siNA molecules” and “ds-siNA molecules” may be used interchangeably. In some embodiments, the ds-siNA molecules comprise a sense strand and an antisense strand.

Further disclosed herein are siNA molecules comprising (a) at least one phosphorylation blocker, conjugated moiety, or 5′-stabilized end cap; and (b) a short interfering nucleic acid (siNA). In some embodiments, the phosphorylation blocker is a phosphorylation blocker disclosed herein. In some embodiments, the conjugated moiety is a galactosamine disclosed herein. In some embodiments, the 5′-stabilized end cap is a 5′-stabilized end cap disclosed herein. The siNA may comprise any of the first nucleotide, second nucleotide, sense strand, or antisense strand sequences disclosed herein. The siNA may comprise 5 to 100, 5 to 90, 10 to 100, 10 to 90, 10 to 80, 10 to 70, 10 to 60, 10 to 50, 10 to 30, 10 to 25, 15 to 100, 15 to 90, 15 to 80, 15 to 70, 15 to 60, 15 to 50, 15 to 30, or 15 to 25 nucleotides. The siNA may comprise at least 5, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, or 40 nucleotides. The siNA may comprise less than or equal to 50, 45, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, or 19 nucleotides. The nucleotides may be modified nucleotides. The siNA may be single stranded. The siNA may be double stranded. The siNA may comprise (a) a sense strand comprising 15 to 30, 15 to 25, 15 to 24, 15 to 23, 15 to 22, 15 to 21, 17 to 30, 17 to 25, 17 to 24, 17 to 23, 17 to 22, 17 to 21, 18 to 30, 18 to 25, 18 to 24, 18 to 23, 18 to 22, 18 to 21, 19 to 30, 19 to 25, 19 to 24, 19 to 23, 19 to 22, 19 to 21, 20 to 25, 20 to 24, 20 to 23, 21 to 25, 21 to 24, or 21 to 23 nucleotides; and (b) an antisense strand comprising 15 to 30, 15 to 25, 15 to 24, 15 to 23, 15 to 22, 15 to 21, 17 to 30, 17 to 25, 17 to 24, 17 to 23, 17 to 22, 17 to 21, 18 to 30, 18 to 25, 18 to 24, 18 to 23, 18 to 22, 18 to 21, 19 to 30, 19 to 25, 19 to 24, 19 to 23, 19 to 22, 19 to 21, 20 to 25, 20 to 24, 20 to 23, 21 to 25, 21 to 24, or 21 to 23 nucleotides. The siNA may comprise (a) a sense strand comprising about 15, 16, 17, 18, 19, 20, 21, 22, or 23 nucleotides; and (b) an antisense strand comprising about 15, 16, 17, 18, 19, 20, 21, 22, or 23 nucleotides. The siNA may comprise (a) a sense strand comprising about 19 nucleotides; and (b) an antisense strand comprising about 21 nucleotides. The siNA may comprise (a) a sense strand comprising about 21 nucleotides; and (b) an antisense strand comprising about 23 nucleotides.

In some embodiments, any of the siNA molecules disclosed herein further comprise one or more linkers independently selected from a phosphodiester (PO) linker, phosphorothioate (PS) linker, phosphorodithioate linker, and PS-mimic linker. In some embodiments, the PS-mimic linker is a sulfur linker. In some embodiments, the linkers are internucleoside linkers. Alternatively, or additionally, the linkers connect a nucleotide of the siNA molecule to at least one phosphorylation blocker, conjugated moiety, or 5′-stabilized end cap. In some embodiments, the linkers connect a conjugated moiety to a phosphorylation blocker or 5′-stabilized end cap.

siNA Sense Strand

Any of the siNA molecules described herein may comprise a sense strand. The sense strand may comprise a first nucleotide sequence. The first nucleotide sequence may be 15 to 30, 15 to 25, 15 to 23, 17 to 23, 19 to 23, or 19 to 21 nucleotides in length. In some embodiments, the first nucleotide sequence is 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 nucleotides in length. In some embodiments, the first nucleotide sequence is at least 19 nucleotides in length. In some embodiments, the first nucleotide sequence is at least 21 nucleotides in length.

In some embodiments, the sense strand is the same length as the first nucleotide sequence. In some embodiments, the sense strand is longer than the first nucleotide sequence. In some embodiments, the sense strand may further comprise 1, 2, 3, 4, or 5 or more nucleotides than the first nucleotide sequence. In some embodiments, the sense strand may further comprise a deoxyribonucleic acid (DNA). In some embodiments, the DNA is thymine (T). In some embodiments, the sense strand may further comprise a TT sequence. In some embodiments, the sense strand may further comprise one or more modified nucleotides that are adjacent to the first nucleotide sequence. In some embodiments, the one or more modified nucleotides are independently selected from any of the modified nucleotides disclosed herein (e.g., 2′-fluoro nucleotide, 2′-O-methyl nucleotide, 2′-fluoro nucleotide mimic, 2′-O-methyl nucleotide mimic, or a nucleotide comprising a modified nucleobase).

In some embodiments, the first nucleotide sequence comprises 15, 16, 17, 18, 19, 20, 21, 22, 23, or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, 70%, 75%, 80%, 85%, 90%, 95% or 100% of the nucleotides in the first nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, 100% of the nucleotides in the first nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, the 2′-O-methyl nucleotide is a 2′-O-methyl nucleotide mimic. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, between about 15 to 30, 15 to 25, 15 to 24, 15 to 23, 15 to 22, 15 to 21, 17 to 30, 17 to 25, 17 to 24, 17 to 23, 17 to 22, 17 to 21, 18 to 30, 18 to 25, 18 to 24, 18 to 23, 18 to 22, 18 to 21, 19 to 30, 19 to 25, 19 to 24, 19 to 23, 19 to 22, 19 to 21, 20 to 25, 20 to 24, 20 to 23, 21 to 25, 21 to 24, or 21 to 23 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 2 to 20 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 5 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 10 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 12 to 25 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 12 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 13 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 14 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 15 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 16 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 17 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 18 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 19 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 21 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 20 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 19 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 18 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 17 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 16 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 15 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 14 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 13 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least one modified nucleotide of the first nucleotide sequence is a 2′-O-methyl pyrimidine. In some embodiments, at least 5, 6, 7, 8, 9, or 10 modified nucleotides of the first nucleotide sequence are 2′-O-methyl pyrimidines. In some embodiments, at least one modified nucleotide of the first nucleotide sequence is a 2′-O-methyl purine. In some embodiments, at least 5, 6, 7, 8, 9, or 10 modified nucleotides of the first nucleotide sequence are 2′-O-methyl purines. In some embodiments, the 2′-O-methyl nucleotide is a 2′-O-methyl nucleotide mimic.

In some embodiments, between 2 to 15 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 10 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 1 to 6, 1 to 5, 1 to 4, or 1 to 3 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 1, 2, 3, 4, 5, or 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 1 modified nucleotide of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, at least 2 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 3 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 4 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 5 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 10, 9, 8, 7, 6, 5, 4, 3 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 10 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 7 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 6 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 5 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 4 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 3 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 2 or fewer modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least one modified nucleotide of the first nucleotide sequence is a 2′-fluoro pyrimidine. In some embodiments, 1, 2, 3, 4, 5, or 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro pyrimidines. In some embodiments, at least one modified nucleotide of the first nucleotide sequence is a 2′-fluoro purine. In some embodiments, 1, 2, 3, 4, 5, or 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro purines. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the nucleotide at position 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, at least two nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least three nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least four nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least five nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotide at position 3 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 7 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 8 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 9 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 12 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, at least 1, 2, 3, 4, 5, 6, or 7 nucleotides at position 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, at least two nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least three nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotide at position 3 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 5 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 7 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 8 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 9 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 10 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 11 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 12 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 14 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 3, 7, 8, 9, 12, and/or 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 3, 7, 8, and/or 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 3, 7, 8, 9, 12, and/or 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 5, 7, 8, and/or 9 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 5, 9, 10, 11, 12, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the 2′-fluoro nucleotide or 2′-O-methyl nucleotide is a 2′-fluoro or 2′-O-methyl nucleotide mimic. In some embodiments, the 2′-fluoro or 2′-O-methyl nucleotide mimic is a nucleotide mimic of Formula (V):

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wherein R¹is independently a nucleobase, aryl, heteroaryl, or H, Q¹and Q²are independently S or O, R⁵is independently —OCD₃, —F, or —OCH₃, and R⁶and R⁷are independently H, D, or CD3. In some embodiments, the nucleobase is selected from cytosine, guanine, adenine, uracil, aryl, heteroaryl, and an analogue or derivative thereof.

In some embodiments, the 2′-fluoro or 2′-O-methyl nucleotide mimic is a nucleotide mimic of Formula (16)-Formula (20):

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wherein R¹is independently a nucleobase and R²is F or —OCH₃. In some embodiments, the nucleobase is selected from cytosine, guanine, adenine, uracil, aryl, heteroaryl, and an analogue or derivative thereof.

In some embodiments, the first nucleotide sequence comprises, consists of, or consists essentially of ribonucleic acids (RNAs). In some embodiments, the first nucleotide sequence comprises, consists of, or consists essentially of modified RNAs. In some embodiments, the modified RNAs are selected from a 2′-O-methyl RNA and 2′-fluoro RNA. In some embodiments, 15, 16, 17, 18, 19, 20, 21, 22, or 23 modified nucleotides of the first nucleotide sequence are independently selected from 2′-O-methyl RNA and 2′-fluoro RNA.

In some embodiments, the sense strand may further comprise one or more internucleoside linkages independently selected from a phosphodiester (PO) internucleoside linkage, phosphorothioate (PS) internucleoside linkage, phosphorodithioate internucleoside linkage, and PS-mimic internucleoside linkage. In some embodiments, the PS-mimic internucleoside linkage is a sulfo internucleoside linkage.

In some embodiments, the sense strand may further comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 or more phosphorothioate internucleoside linkages. In some embodiments, the sense strand comprises 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, or 3 or fewer phosphorothioate internucleoside linkages. In some embodiments, the sense strand comprises 2 to 10, 2 to 8, 2 to 6, 1 to 5, 1 to 4, 1 to 3, or 1 to 2 phosphorothioate internucleoside linkages. In some embodiments, the sense strand comprises 1 to 2 phosphorothioate internucleoside linkages. In some embodiments, the sense strand comprises 2 to 4 phosphorothioate internucleoside linkages. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 5′ end of the first nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 5′ end of the first nucleotide sequence. In some embodiments, the sense strand comprises two phosphorothioate internucleoside linkages between the nucleotides at positions 1 to 3 from the 5′ end of the first nucleotide sequence.

In some embodiments, any of the sense strands disclosed herein further comprise a monomer selected from Examples 21-32, 36, 37, 40-42, and 44-46 monomers. In some embodiments, any of the sense strands disclosed herein further comprise a 5′ end cap monomer. In some embodiments, the 5′ end cap monomer is selected from Examples 5-11, 33-35, 38, 39, 43, and 49-53 5′ end cap monomers.

In some embodiments, any of the first nucleotide sequences disclosed herein further comprise a monomer selected from Examples 21-32, 36, 37, 40-42, and 44-46 monomers. In some embodiments, any of the first nucleotide sequences disclosed herein further comprise a 5′ end cap monomer. In some embodiments, the 5′ end cap monomer is selected from Examples 5-11, 33-35, 38, 39, 43, and 49-53 5′ end cap monomers.

siNA Antisense Strand

Any of the siNA molecules described herein may comprise an antisense strand. The antisense strand may comprise a second nucleotide sequence. The second nucleotide sequence may be 15 to 30, 15 to 25, 15 to 23, 17 to 23, 19 to 23, or 19 to 21 nucleotides in length. In some embodiments, the second nucleotide sequence is 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 nucleotides in length. In some embodiments, the second nucleotide sequence is at least 19 nucleotides in length. In some embodiments, the second nucleotide sequence is at least 21 nucleotides in length.

In some embodiments, the antisense strand is the same length as the second nucleotide sequence. In some embodiments, the antisense strand is longer than the second nucleotide sequence. In some embodiments, the antisense strand may further comprise 1, 2, 3, 4, or 5 or more nucleotides than the second nucleotide sequence. In some embodiments, the antisense strand is the same length as the sense strand. In some embodiments, the antisense strand is longer than the sense strand. In some embodiments, the antisense strand may further comprise 1, 2, 3, 4, or 5 or more nucleotides than the sense strand. In some embodiments, the antisense strand may further comprise a deoxyribonucleic acid (DNA). In some embodiments, the DNA is thymine (T). In some embodiments, the antisense strand may further comprise a TT sequence. In some embodiments, the antisense strand may further comprise one or more modified nucleotides that are adjacent to the second nucleotide sequence. In some embodiments, the one or more modified nucleotides are independently selected from any of the modified nucleotides disclosed herein (e.g., 2′-fluoro nucleotide, 2′-O-methyl nucleotide, 2′-fluoro nucleotide mimic, 2′-O-methyl nucleotide mimic, or a nucleotide comprising a modified nucleobase).

In some embodiments, the second nucleotide sequence comprises 15, 16, 17, 18, 19, 20, 21, 22, 23, or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, 70%, 75%, 80%, 85%, 90%, 95% or 100% of the nucleotides in the second nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide. In some embodiments, 100% of the nucleotides in the second nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide.

In some embodiments, between about 15 to 30, 15 to 25, 15 to 24, 15 to 23, 15 to 22, 15 to 21, 17 to 30, 17 to 25, 17 to 24, 17 to 23, 17 to 22, 17 to 21, 18 to 30, 18 to 25, 18 to 24, 18 to 23, 18 to 22, 18 to 21, 19 to 30, 19 to 25, 19 to 24, 19 to 23, 19 to 22, 19 to 21, 20 to 25, 20 to 24, 20 to 23, 21 to 25, 21 to 24, or 21 to 23 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 2 to 20 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 5 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 10 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, between about 12 to 25 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 12 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 13 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 14 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 15 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 16 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 17 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 18 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least about 19 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 21 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 20 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 19 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 18 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 17 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 16 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 15 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 14 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, less than or equal to 13 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides. In some embodiments, at least one modified nucleotide of the second nucleotide sequence is a 2′-O-methyl pyrimidine. In some embodiments, at least 5, 6, 7, 8, 9, or 10 modified nucleotides of the second nucleotide sequence are 2′-O-methyl pyrimidines. In some embodiments, at least one modified nucleotide of the second nucleotide sequence is a 2′-O-methyl purine. In some embodiments, at least 5, 6, 7, 8, 9, or 10 modified nucleotides of the second nucleotide sequence are 2′-O-methyl purines. In some embodiments, the 2′-O-methyl nucleotide is a 2′-O-methyl nucleotide mimic.

In some embodiments, between 2 to 15 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 10 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, between 2 to 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 1 to 6, 1 to 5, 1 to 4, or 1 to 3 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 1, 2, 3, 4, 5, or 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 1 modified nucleotide of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, at least 2 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 3 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 4 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least 5 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 10, 9, 8, 7, 6, 5, 4, 3 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 10 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 7 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 6 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 5 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 4 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 3 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, 2 or fewer modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least one modified nucleotide of the second nucleotide sequence is a 2′-fluoro pyrimidine. In some embodiments, 1, 2, 3, 4, 5, or 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro pyrimidines. In some embodiments, at least one modified nucleotide of the second nucleotide sequence is a 2′-fluoro purine. In some embodiments, 1, 2, 3, 4, 5, or 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro purines. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the 2′-fluoro or 2′-O-methyl nucleotide mimic is a nucleotide mimic of Formula (16)-Formula (20):

In some embodiments, at least 1, 2, 3, 4, 5, 6, 7, 8, or 9 nucleotides at position 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, at least two nucleotides at positions 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least three nucleotides at positions 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least four nucleotides at positions 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, at least five nucleotides at positions 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 2 and/or 14 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 2, 6, and/or 16 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 2, 6, 14, and/or 16 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 2, 6, 10, 14, and/or 18 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotides at positions 2, 5, 8, 14, and/or 17 from the 5′ end of the second nucleotide sequence are 2′-fluoro nucleotides. In some embodiments, the nucleotide at position 2 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 5 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 6 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 8 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 10 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 14 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 16 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 17 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the nucleotide at position 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides, and wherein the alternating 1:3 modification pattern occurs at least 2 times. In some embodiments, the alternating 1:3 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:3 modification pattern occur consecutively. In some embodiments, at least two of the alternating 1:3 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the nucleotides in the second nucleotide sequence are arranged in an alternating 1:2 modification pattern, wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides, and wherein the alternating 1:2 modification pattern occurs at least 2 times. In some embodiments, the alternating 1:2 modification pattern occurs 2-5 times. In some embodiments, at least two of the alternating 1:2 modification pattern occurs consecutively. In some embodiments, at least two of the alternating 1:2 modification pattern occurs nonconsecutively. In some embodiments, at least 1, 2, 3, 4, or 5 alternating 1:2 modification pattern begins at nucleotide position 2, 5, 8, 14, and/or 17 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 5 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 8 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand. In some embodiments, at least one alternating 1:2 modification pattern begins at nucleotide position 17 from the 5′ end of the antisense strand. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the second nucleotide sequence comprises, consists of, or consists essentially of ribonucleic acids (RNAs). In some embodiments, the second nucleotide sequence comprises, consists of, or consists essentially of modified RNAs. In some embodiments, the modified RNAs are selected from a 2′-O-methyl RNA and 2′-fluoro RNA. In some embodiments, 15, 16, 17, 18, 19, 20, 21, 22, or 23 modified nucleotides of the second nucleotide sequence are independently selected from 2′-O-methyl RNA and 2′-fluoro RNA. In some embodiments, the 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

In some embodiments, the antisense strand may further comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 or more phosphorothioate internucleoside linkages. In some embodiments, the antisense strand comprises 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, or 3 or fewer phosphorothioate internucleoside linkages. In some embodiments, the antisense strand comprises 2 to 10, 2 to 8, 2 to 6, 1 to 5, 1 to 4, 1 to 3, or 1 to 2 phosphorothioate internucleoside linkages. In some embodiments, the antisense strand comprises 2 to 10, 2 to 8, 2 to 6, 1 to 5, 1 to 4, 1 to 3, or 1 to 2 phosphorothioate internucleoside linkages. In some embodiments, the antisense strand comprises 2 to 8 phosphorothioate internucleoside linkages. In some embodiments, the antisense strand comprises 3 to 8 phosphorothioate internucleoside linkages. In some embodiments, the antisense strand comprises 4 to 8 phosphorothioate internucleoside linkages. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 5′ end of the second nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 5′ end of the second nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 3′ end of the second nucleotide sequence. In some embodiments, at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 3′ end of the second nucleotide sequence. In some embodiments, the antisense strand comprises two phosphorothioate internucleoside linkages between the nucleotides at positions 1 to 3 from the 5′ end of the first nucleotide sequence. In some embodiments, the antisense strand comprises two phosphorothioate internucleoside linkages between the nucleotides at positions 1 to 3 from the 3′ end of the first nucleotide sequence. In some embodiments, the antisense strand comprises (a) two phosphorothioate internucleoside linkages between the nucleotides at positions 1 to 3 from the 5′ end of the first nucleotide sequence; and (b) two phosphorothioate internucleoside linkages between the nucleotides at positions 1 to 3 from the 3′ end of the first nucleotide sequence.

In some embodiments, at least one end of the ds-siNA is a blunt end. In some embodiments, at least one end of the ds-siNA comprises an overhang, wherein the overhang comprises at least one nucleotide. In some embodiments, both ends of the ds-siNA comprise an overhang, wherein the overhang comprises at least one nucleotide. In some embodiments, the overhang comprises 1 to 5 nucleotides, 1 to 4 nucleotides, 1 to 3 nucleotides, or 1 to 2 nucleotides. In some embodiments, the overhang consists of 1 to 2 nucleotides.

In some embodiments, the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539.

In some embodiments, any of the antisense strands disclosed herein further comprise a monomer selected from Examples 21-32, 36, 37, 40-42, and 44-46 monomers. In some embodiments, any of the antisense strands disclosed herein further comprise a 5′ end cap monomer. In some embodiments, the 5′ end cap monomer is selected from Examples 5-11, 33-35, 38, 39, 43, and 49-53 5′ end cap monomers.

In some embodiments, any of the second nucleotide sequences disclosed herein further comprise a monomer selected from Examples 21-32, 36, 37, 40-42, and 44-46 monomers. In some embodiments, any of the second nucleotide sequences disclosed herein further comprise a 5′ end cap monomer. In some embodiments, the 5′ end cap monomer is selected from Examples 5-11, 33-35, 38, 39, 43, and 49-53 5′ end cap monomers.

Modified Nucleotides

Further disclosed herein are siNA molecules comprising one or more modified nucleotides. In some embodiments, any of the siNAs disclosed herein comprise one or more modified nucleotides. In some embodiments, any of the sense strands disclosed herein comprise one or more modified nucleotides. In some embodiments, any of the first nucleotide sequences disclosed herein comprise one or more modified nucleotides. In some embodiments, any of the antisense strands disclosed herein comprise one or more modified nucleotides. In some embodiments, any of the second nucleotide sequences disclosed herein comprise one or more modified nucleotides. In some embodiments, the one or more modified nucleotides is adjacent to the first nucleotide sequence. In some embodiments, at least one modified nucleotide is adjacent to the 5′ end of the first nucleotide sequence. In some embodiments, at least one modified nucleotide is adjacent to the 3′ end of the first nucleotide sequence. In some embodiments, at least one modified nucleotide is adjacent to the 5′ end of the first nucleotide sequence and at least one modified nucleotide is adjacent to the 3′ end of the first nucleotide sequence. In some embodiments, the one or more modified nucleotides is adjacent to the second nucleotide sequence. In some embodiments, at least one modified nucleotide is adjacent to the 5′ end of the second nucleotide sequence. In some embodiments, at least one modified nucleotide is adjacent to the 3′ end of the second nucleotide sequence. In some embodiments, at least one modified nucleotide is adjacent to the 5′ end of the second nucleotide sequence and at least one modified nucleotide is adjacent to the 3′ end of the second nucleotide sequence. In some embodiments, a 2′-O-methyl nucleotide in any of sense strands or first nucleotide sequences disclosed herein is replaced with a modified nucleotide. In some embodiments, a 2′-O-methyl nucleotide in any of antisense strands or second nucleotide sequences disclosed herein is replaced with a modified nucleotide.

In some embodiments, any of the siNA molecules, siNAs, sense strands, first nucleotide sequences, antisense strands, and second nucleotide sequences disclosed herein comprise 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 or more modified nucleotides. In some embodiments, 1%, 2%, 3%, 4%, 5%0, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%0, 70%, 75%, 80%, 85%, 86%, 87%, 88%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% or 100% of the nucleotides in the siNA molecule, siNA, sense strand, first nucleotide sequence, antisense strand, or second nucleotide sequence are modified nucleotides.

In some embodiments, a modified nucleotide is selected from the group consisting of 2′-fluoro nucleotide, 2′-O-methyl nucleotide, 2′-fluoro nucleotide mimic, 2′-O-methyl nucleotide mimic, a locked nucleic acid, and a nucleotide comprising a modified nucleobase.

In some embodiments, any of the siRNAs disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more 2′-fluoro or 2′-O-methyl nucleotide mimics. In some embodiments, any of the sense strands disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more 2′-fluoro or 2′-O-methyl nucleotide mimics. In some embodiments, any of the first nucleotide sequences disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more 2′-fluoro or 2′-O-methyl nucleotide mimics. In some embodiments, any of the antisense strand disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more 2′-fluoro or 2′-O-methyl nucleotide mimics. In some embodiments, any of the second nucleotide sequences disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more 2′-fluoro or 2′-O-methyl nucleotide mimics. In some embodiments, the 2′-fluoro or 2′-O-methyl nucleotide mimic is a nucleotide mimic of Formula (16)-Formula (20):

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wherein R¹is a nucleobase and R²is independently F or —OCH₃. In some embodiments, the nucleobase is selected from cytosine, guanine, adenine, uracil, aryl, heteroaryl, and an analogue or derivative thereof. In some embodiments, the siNA molecules disclosed herein comprise at least one 2′-fluoro nucleotide, at least one 2′-O-methyl nucleotide, and at least one 2′-fluoro or 2′-O-methyl nucleotide mimic. In some embodiments, the at least one 2′-fluoro or 2′-O-methyl nucleotide mimic is adjacent to the first nucleotide sequence. In some embodiments, the at least one 2′-fluoro or 2′-O-methyl nucleotide mimic is adjacent to the 5′ end of first nucleotide sequence. In some embodiments, the at least one 2′-fluoro or 2′-O-methyl nucleotide mimic is adjacent to the 3′ end of first nucleotide sequence. In some embodiments, the at least one 2′-fluoro or 2′-O-methyl nucleotide mimic is adjacent to the second nucleotide sequence. In some embodiments, the at least one 2′-fluoro or 2′-O-methyl nucleotide mimic is adjacent to the 5′ end of second nucleotide sequence. In some embodiments, the at least one 2′-fluoro or 2′-O-methyl nucleotide mimic is adjacent to the 3′ end of second nucleotide sequence. In some embodiments, the first nucleotide sequence does not comprise a 2′-fluoro nucleotide mimic. In some embodiments, the first nucleotide sequence does not comprise a 2′-O-methyl nucleotide mimic. In some embodiments, the second nucleotide sequence does not comprise a 2′-fluoro nucleotide mimic. In some embodiments, the second nucleotide sequence does not comprise a 2′-O-methyl nucleotide mimic.

In some embodiments, any of the siRNAs disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more locked nucleic acids. In some embodiments, any of the sense strands disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more locked nucleic acids. In some embodiments, any of the first nucleotide sequences disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more locked nucleic acids. In some embodiments, any of the antisense strand disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more locked nucleic acids. In some embodiments, any of the second nucleotide sequences disclosed herein comprise at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more locked nucleic acids. In some embodiments, the locked nucleic acid is selected from

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where R is H or alkyl (or AmNA(N-Me)) when R is alkyl);

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wherein B is a nucleobase. In some embodiments, any of the siRNAs, sense strands, first nucleotide sequences, antisense strands, or second nucleotide sequences disclosed herein comprise at least modified nucleotide that is

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In some embodiments, any of the siRNAs, sense strands, first nucleotide sequences, antisense strands, or second nucleotide sequences disclosed herein comprise at least modified nucleotide that is

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where R is H or alkyl (or AmNA(N-Me)) when R is alkyl). In some embodiments, any of the siRNAs, sense strands, first nucleotide sequences, antisense strands, or second nucleotide sequences disclosed herein comprise at least modified nucleotide that is

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wherein B is a nucleobase.

Phosphorylation Blocker

Further disclosed herein are siNA molecules comprising a phosphorylation blocker. In some embodiments, a 2′-O-methyl nucleotide in any of sense strands or first nucleotide sequences disclosed herein is replaced with a nucleotide containing a phosphorylation blocker. In some embodiments, a 2′-O-methyl nucleotide in any of antisense strands or second nucleotide sequences disclosed herein is replaced with a nucleotide containing a phosphorylation blocker. In some embodiments, a 2′-O-methyl nucleotide in any of sense strands or first nucleotide sequences disclosed herein is further modified to contain a phosphorylation blocker. In some embodiments, a 2′-O-methyl nucleotide in any of antisense strands or second nucleotide sequences disclosed herein is further modified to contain a phosphorylation blocker.

In some embodiments, any of the siNA molecules disclosed herein comprise a phosphorylation blocker of Formula (IV):

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wherein R¹is a nucleobase, and R⁴is —OCH₃or —N(CH₂CH₂)₂O.

In some embodiments, a siNA molecule comprises (a) a phosphorylation blocker of Formula (IV):

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wherein R¹is a nucleobase, and R⁴is —OCH₃or —N(CH₂CH₂)₂O; and (b) a short interfering nucleic acid (siNA), wherein the phosphorylation blocker is conjugated to the siNA.

In some embodiments, the phosphorylation blocker is attached to the 3′ end of the sense strand or first nucleotide sequence. In some embodiments, the phosphorylation blocker is attached to the 3′ end of the sense strand or first nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the phosphorylation blocker is attached to the 5′ end of the sense strand or first nucleotide sequence. In some embodiments, the phosphorylation blocker is attached to the 5′ end of the sense strand or first nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the phosphorylation blocker is attached to the 3′ end of the antisense strand or second nucleotide sequence. In some embodiments, the phosphorylation blocker is attached to the 3′ end of the antisense strand or second nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the phosphorylation blocker is attached to the 5′ end of the antisense strand or second nucleotide sequence. In some embodiments, the phosphorylation blocker is attached to the 5′ end of the antisense strand or second nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the one or more linkers are independently selected from the group consisting of a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.

Conjugated Moiety

Further disclosed herein are siNA molecules comprising a conjugated moiety. In some embodiments, the conjugated moiety is selected from galactosamine, peptides, proteins, sterols, lipids, phospholipids, biotin, phenoxazines, active drug substance, cholesterols, phenanthridine, anthraquinone, acridine, fluoresceins, rhodamines, coumarins, and dyes. In some embodiments, the conjugated moiety is attached to the 3′ end of the sense strand or first nucleotide sequence. In some embodiments, the conjugated moiety is attached to the 3′ end of the sense strand or first nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the conjugated moiety is attached to the 5′ end of the sense strand or first nucleotide sequence. In some embodiments, the conjugated moiety is attached to the 5′ end of the sense strand or first nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the conjugated moiety is attached to the 3′ end of the antisense strand or second nucleotide sequence. In some embodiments, the conjugated moiety is attached to the 3′ end of the antisense strand or second nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the conjugated moiety is attached to the 5′ end of the antisense strand or second nucleotide sequence. In some embodiments, the conjugated moiety is attached to the 5′ end of the antisense strand or second nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the one or more linkers are independently selected from the group consisting of a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.

In some embodiments, the conjugated moiety is galactosamine. In some embodiments, any of the siNAs disclosed herein are attached to a conjugated moiety that is galactosamine. In some embodiments, the galactosamine is N-acetylgalactosamine (GalNAc). In some embodiments, any of the siNA molecules disclosed herein comprise GalNAc. In some embodiments, the GalNAc is of Formula (VI):

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wherein m is 1, 2, 3, 4, or 5; each n is independently 1 or 2; p is 0 or 1; each R is independently H or a first protecting group; each Y is independently selected from —O—P(═O)(SH)—, —O—P(═O)(O)—, —O—P(═O)(OH)—, —O—P(S)S—, and —O—; Z is H or a second protecting group; either L is a linker or L and Y in combination are a linker; and A is H, OH, a third protecting group, an activated group, or an oligonucleotide. In some embodiments, the first protecting group is acetyl. In some embodiments, the second protecting group is trimethoxytrityl (TMT). In some embodiments, the activated group is a phosphoramidite group. In some embodiments, the phosphoramidite group is a cyanoethoxy N,N-diisopropylphosphoramidite group. In some embodiments, the linker is a C6-NH₂group. In some embodiments, A is a short interfering nucleic acid (siNA) or siNA molecule. In some embodiments, m is 3. In some embodiments, R is H, Z is H, and n is 1. In some embodiments, R is H, Z is H, and n is 2.

In some embodiments, the GalNAc is of Formula (VII):

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wherein each n is independently 1 or 2.

In some embodiments, the galactosamine is attached to the 3′ end of the sense strand or first nucleotide sequence. In some embodiments, the galactosamine is attached to the 3′ end of the sense strand or first nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the galactosamine is attached to the 5′ end of the sense strand or first nucleotide sequence. In some embodiments, the galactosamine is attached to the 5′ end of the sense strand or first nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the galactosamine is attached to the 3′ end of the antisense strand or second nucleotide sequence. In some embodiments, the galactosamine is attached to the 3′ end of the antisense strand or second nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the galactosamine is attached to the 5′ end of the antisense strand or second nucleotide sequence. In some embodiments, the galactosamine is attached to the 5′ end of the antisense strand or second nucleotide sequence via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the one or more linkers are independently selected from the group consisting of a phosphodiester (p or po) linker, phosphorothioate (ps) linker, phosphoramidite (HEG) linker, triethylene glycol (TEG) linker, and/or phosphorodithioate linker. In some embodiments, the one or more linkers are independently selected from the group consisting of p-(PS)2, (PS)2-p-TEG-p, (PS)2-p-HEG-p, and (PS)2-p-(HEG-p)2.

In some embodiments, the conjugated moiety is a lipid moiety. In some embodiments, any of the siNAs disclosed herein are attached to a conjugated moiety that is a lipid moiety. Examples of lipid moieties include, but are not limited to, a cholesterol moiety, a thioether, e.g., hexyl-S-tritylthiol, a thiocholesterol, an aliphatic chain, e.g., dodecandiol or undecyl residues a phospholipid, e.g., di-hexadecyl-rac-glycerol or triethylammonium 1-di-O-hexadecyl-rac-glycero-S—H-phosphonate, a polyamine or a polyethylene glycol chain, adamantane acetic acid, a palmityl moiety, or an octadecylamine or hexylamino-carbonyl-oxycholesterol moiety.

In some embodiments, the conjugated moiety is an active drug substance. In some embodiments, any of the siNAs disclosed herein are attached to a conjugated moiety that is an active drug substance. Examples of active drug substances include, but are not limited to, aspirin, warfarin phenylbutazone, ibuprofen, suprofen, fenbufen, ketoprofen, (5)-(+) pranoprofen, carprofen, dansylsarcosine, 2,3,5-triiodobenzoic acid, flufenamic acid, folinic acid, a benzothiadiazide, chlorothiazide, a diazepine, indomethicin, a barbiturate, a cephalosporin, a sulfa drug, an antidiabetic, an antibacterial or an antibiotic.

5′-Stabilized End Cap

Further disclosed herein are siNA molecules comprising a 5′-stabilized end cap. As used herein the terms “5′-stabilized end cap” and “5′ end cap” are used interchangeably. In some embodiments, a 2′-O-methyl nucleotide in any of sense strands or first nucleotide sequences disclosed herein is replaced with a nucleotide containing a 5′-stabilized end cap. In some embodiments, a 2′-O-methyl nucleotide in any of antisense strands or second nucleotide sequences disclosed herein is replaced with a nucleotide containing a 5′-stabilized end cap. In some embodiments, a 2′-O-methyl nucleotide in any of sense strands or first nucleotide sequences disclosed herein is further modified to contain a 5′-stabilized end cap. In some embodiments, a 2′-O-methyl nucleotide in any of antisense strands or second nucleotide sequences disclosed herein is further modified to contain a 5′-stabilized end cap.

In some embodiments, the 5′-stabilized end cap is a 5′ phosphate mimic. In some embodiments, the 5′-stabilized end cap is a modified 5′ phosphate mimic. In some embodiments, the modified 5′ phosphate is a chemically modified 5′ phosphate. In some embodiments, the 5′-stabilized end cap is a 5′-vinyl phosphonate. In some embodiments, the 5′-vinyl phosphonate is a 5′-(E)-vinyl phosphonate or 5′-(Z)-vinyl phosphonate. In some embodiments, the 5′-vinyl phosphonate is a deuterated vinyl phosphonate. In some embodiments, the deuterated vinyl phosphonate is a mono-deuterated vinyl phosphonate. In some embodiments, the deuterated vinyl phosphonate is a di-deuterated vinyl phosphonate. In some embodiments, the 5′-stabilized end cap is a phosphate mimic. Examples of phosphate mimics are disclosed in Parmar et al., 2018, J Med Chem, 61(3):734-744, International Publication Nos. WO2018/045317 and WO2018/044350, and U.S. Pat. No. 10,087,210, each of which is incorporated by reference in its entirety.

In some embodiments, any of the siNA molecules, sense strands, first nucleotide sequences, antisense strands, or second nucleotide sequences disclosed herein comprise a 5′-stabilized end cap of Formula (Ia):

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wherein R¹is H, a nucleobase, aryl, or heteroaryl; R²is

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—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is H; or R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z; n is 1, 2, 3, or 4; Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴, —NR²³SO₂R²⁴; either R²¹and R²²are independently hydrogen or C₁-C₆alkyl, or R²¹and R²²together form an oxo group; R²³is hydrogen or C₁-C₆alkyl; R²⁴is —SO₂R²⁵or —C(O)R²⁵; or R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring; R²⁵is C₁-C₆alkyl; and m is 1, 2, 3, or 4. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

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wherein R¹is H, a nucleobase, aryl, or heteroaryl; R²is

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wherein R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, R²is

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R⁹is —SO₂CH₃or —COCH₃, custom character is a double or single bond, R¹⁰=—CH₂PO₃H or —NHCH₃, R¹¹is —CH₂— or —CO—, and R¹²is H and R¹³is CH₃or R¹²and R¹³together form —CH₂CH₂CH₂—. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, R²is

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, L is —CH₂—, —CH═CH—, —CO—, or —CH₂CH₂—, and A is —ONHCOCH₃, —ONHSO₂CH₃, —PO₃H, —OP(SOH)CH₂CO₂H, —SO₂CH₂PO₃H, —SO₂NHCH₃, —NHSO₂CH₃, or —N(SO₂CH₂CH₂CH₂). In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

Further disclosed herein are siNA molecules comprising (a) a 5′-stabilized end cap of Formula (Ia):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H;

R²is

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—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is H; or R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z; n is 1, 2, 3, or 4; Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴, —NR²³SO₂R²⁴; either R²¹and R²²are independently hydrogen or C₁-C₆alkyl, or R²¹and R²²together form an oxo group; R²³is hydrogen or C₁-C₆alkyl; R²⁴is —SO₂R²⁵or —C(O)R²⁵; or R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring; R²⁵is C₁-C₆alkyl; and m is 1, 2, 3, or 4; and (b) a short interfering nucleic acid (siNA), wherein the 5′-stabilized end cap is conjugated to the siNA. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

Further disclosed herein are siNA molecules comprising (a) a 5′-stabilized end cap of Formula (Ib):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H; R²is

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—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is H; or R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z; n is 1, 2, 3, or 4; Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴, —NR²³SO₂R²⁴; either R²¹and R²²are independently hydrogen or C₁-C₆alkyl, or R²¹and R²²together form an oxo group; R²³is hydrogen or C₁-C₆alkyl; R²⁴is —SO₂R²⁵or —C(O)R²⁵; or R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring; R²⁵is C₁-C₆alkyl; and m is 1, 2, 3, or 4; and (b) a short interfering nucleic acid (siNA), wherein the 5′-stabilized end cap is conjugated to the siNA. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

Further disclosed herein are siNA molecules comprising (a) a 5′-stabilized end cap of Formula (Ic):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, R²is

In some embodiments, a siNA molecule comprises (a) a 5′-stabilized end cap of Formula (IIa):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, R²is

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R⁹is —SO₂CH₃or —COCH₃, wherein custom character is a double or single bond, R¹⁰=—CH₂PO₃H or —NHCH₃, R¹¹is —CH₂— or —CO—, and R¹²is H and R¹³is CH₃or R¹²and R¹³together form —CH₂CH₂CH₂—; and (b) a short interfering nucleic acid (siNA), wherein the 5′-stabilized end cap is conjugated to the siNA. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

In some embodiments, a siNA molecule comprises (a) a 5′-stabilized end cap of Formula (IIb):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, R²is

In some embodiments, a siNA molecule comprises (a) a 5′-stabilized end cap of Formula (III):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H, L is —CH₂—, —CH═CH—, —CO—, or —CH₂CH₂—, and A is —ONHCOCH₃, —ONHSO₂CH₃, —PO₃H, —OP(SOH)CH₂CO₂H, —SO₂CH₂PO₃H, —SO₂NHCH₃, —NHSO₂CH₃, or —N(SO₂CH₂CH₂CH₂); and (b) a short interfering nucleic acid (siNA), wherein the 5′-stabilized end cap is conjugated to the siNA. In some embodiments, R¹is an aryl. In some embodiments, the aryl is phenyl.

In some embodiments, any of the siNA molecules disclosed herein comprise a 5′-stabilized end cap selected from the group consisting of Formula (1) to Formula (15), Formula (9X) to Formula (12X), and Formula (9Y) to Formula (12Y):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

In some embodiments, any of the siNA molecules disclosed herein comprise a 5′-stabilized end cap selected from the group consisting of Formulas (1A)-(15A), Formulas (9B)-(12B), Formulas (9AX)-(12AX), Formulas (9AY)-(12AY), Formulas (9BX)-(12BX), and Formulas (9BY)-(12BY):

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In some embodiments, any of the siNA molecules disclosed herein comprise a 5′-stabilized end cap selected from the group consisting of Formula (21) to Formula (35):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H. In some embodiments, R¹is an aryl. In some embodiments, the aryl is a phenyl.

In some embodiments, any of the siNA molecules disclosed herein comprise a 5′-stabilized end cap selected from the group consisting of Formulas (21A)-(35A), Formulas (29B)-(32B), Formulas (29AX)-(32AX), Formulas (29AY)-(32AY), Formulas (29BX)-(32BX), and Formulas (29BY)-(32BY):

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In some embodiments, the 5′-stabilized end cap is attached to the 5′ end of the antisense strand. In some embodiments, the 5′-stabilized end cap is attached to the 5′ end of the antisense strand via 1, 2, 3, 4, or 5 or more linkers. In some embodiments, the one or more linkers are independently selected from the group consisting of a phosphodiester (p or po) linker, phosphorothioate (ps) linker (ps), phosphoramidite (HEG) linker, triethylene glycol (TEG) linker, and/or phosphorodithioate linker. In some embodiments, the one or more linkers are independently selected from the group consisting of p-(PS)2, (PS)2-p-TEG-p, (PS)2-p-HEG-p, and (PS)2-p-(HEG-p)2.

Linker

In some embodiments, any of the siRNAs, sense strands, first nucleotide sequences, antisense strands, and/or second nucleotide sequences disclosed herein comprise 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 or more internucleoside linkers. In some embodiments, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more internucleoside linkers are independently selected from the group consisting of a phosphodiester (p or po) linker, phosphorothioate (ps) linker, or phosphorodithioate linker.

In some embodiments, any of the siRNAs, sense strands, first nucleotide sequences, antisense strands, and/or second nucleotide sequences disclosed herein further comprise 1, 2, 3, 4 or more linkers that attach a conjugated moiety, phosphorylation blocker, and/or 5′ end cap to the siRNA, sense strand, first nucleotide sequence, antisense strand, and/or second nucleotide sequences. In some embodiments, the 1, 2, 3, 4 or more linkers are independently selected from the group consisting of a phosphodiester (p or po) linker, phosphorothioate (ps) linker, phosphoramidite (HEG) linker, triethylene glycol (TEG) linker, and/or phosphorodithioate linker. In some embodiments, the one or more linkers are independently selected from the group consisting of p-(PS)2, (PS)2-p-TEG-p, (PS)2-p-HEG-p, and (PS)2-p-(HEG-p)2.

Target Gene

Without wishing to be bound by theory, upon entry into a cell, any of the ds-siNA molecules disclosed herein may interact with proteins in the cell to form a RNA-Induced Silencing Complex (RISC). Once the ds-siNA is part of the RISC, the ds-siNA may be unwound to form a single-stranded siNA (ss-siNA). The ss-siNA may comprise the antisense strand of the ds-siNA. The antisense strand may bind to a complementary messenger RNA (mRNA), which results in silencing of the gene that encodes the mRNA.

The target gene may be any gene in a cell. In some embodiments, the target gene is a viral gene. In some embodiments, the viral gene is from a DNA virus. In some embodiments, the DNA virus is a double-stranded DNA (dsDNA) virus. In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV). In some embodiments, the HBV is selected from HBV genotypes A-J.

In some embodiments, the target gene is selected from the S gene or X gene of the HBV. In some embodiments, the HBV has a genome sequence shown in the nucleotide sequence of SEQ ID NO: 410, which corresponds to the nucleotide sequence of GenBank Accession No. U95551.1, which is incorporated by reference in its entirety.

An exemplary HBV genome sequence is shown in SEQ ID NO: 596, corresponding to Genbank Accession No. KC315400.1, which is incorporated by reference in its entirety. Nucleotides 2307..3215, 1..1623 of SEQ ID NO: 596 correspond to the polymerase/RT gene sequence, which encodes for the polymerase protein. Nucleotides 2848..3215, 1..835 of SEQ ID NO: 596 correspond to the PreS1/S2/S gene sequence, which encodes for the large S protein. Nucleotides 3205..3215, 1..835 of SEQ ID NO: 596 correspond to the PreS2/S gene sequence, which encodes for the middle S protein. Nucleotides 155..835 of SEQ ID NO: 596 correspond to the S gene sequence, which encodes the small S protein. Nucleotides 1374..1838 of SEQ ID NO: 596 correspond to the X gene sequence, which encodes the X protein. Nucleotides 1814..2452 of SEQ ID NO: 596 correspond to the PreC/C gene sequence, which encodes the precore/core protein. Nucleotides 1901.2452 of SEQ ID NO: 596 correspond to the C gene sequence, which encodes the core protein. The HBV genome further comprises viral regulatory elements, such as viral promoters (preS2, preS1, Core, and X) and enhancer elements (ENH1 and ENH2). Nucleotides 1624..1771 of SEQ ID NO: 596 correspond to ENH2. Nucleotides 1742..1849 of SEQ ID NO: 596 correspond to the Core promoter. Nucleotides 1818..3215, 1..1930 of SEQ ID NO: 596 correspond to the pregenomic RNA (pgRNA), which encodes the core and polymerase proteins.

In some embodiments, the ASO is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary or hybridizes to a viral target RNA sequence that begins in an X region of HBV or in an S region of HBV. The viral target may, e.g., begin at the 5′-end of target-site in acc. KC315400.1 (genotype B, “gt B”), or in any one of genotypes A, C, or D. The skilled person would understand the HBV position, e.g., as described in Wing-Kin Sung, et al., Nature Genetics 44:765 (2012). In some embodiments, the S region is defined as from the beginning of small S protein (in genotype B KC315400.1 isolate, position #155) to before beginning of X protein (in genotype B KC315400.1 isolate, position #1373). In some embodiments, the X region is defined as from the beginning X protein (in genotype B KC315400.1 isolate, position #1374) to end of DR2 site (in genotype B KC315400.1 isolate, position #1603).

In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides within positions 200-720 or 1100-1700 of SEQ ID NO: 410. In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides within positions 200-280, 300-445, 460-510, 650-720, 1170-1220, 1250-1300, or 1550-1630 of SEQ ID NO: 410. In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides within positions 200-230, 250-280, 300-330, 370-400, 405-445, 460-500, 670-700, 1180-1210, 1260-1295, 1520-1550, or 1570-1610 of SEQ ID NO: 410. In some embodiments, the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides starting at position 203, 206, 254, 305, 375, 409, 412, 415, 416, 419, 462, 466, 467, 674, 676, 1182, 1262, 1263, 1268, 1526, 1577, 1578, 1580, 1581, 1583, or 1584 of SEQ ID NO: 410.

In some embodiments, the first nucleotide is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to a nucleotide region within SEQ ID NO: 410, with the exception that the thymines (Ts) in SEQ ID NO: 410 are replaced with uracil (U). In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides within positions 200-720 or 1100-1700 of SEQ ID NO: 410. In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides within positions 200-280, 300-445, 460-510, 650-720, 1170-1220, 1250-1300, or 1550-1630 of SEQ ID NO: 410. In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides within positions 200-230, 250-280, 300-330, 370-400, 405-445, 460-500, 670-700, 1180-1210, 1260-1295, 1520-1550, or 1570-1610 of SEQ ID NO: 410. In some embodiments, the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30, 15 to 25, 15 to 23, 15 to 22, 15 to 21, 17 to 25, 17 to 23, 17 to 22, 17 to 21, or 19 to 21 nucleotides starting at position 203, 206, 254, 305, 375, 409, 412, 415, 416, 419, 462, 466, 467, 674, 676, 1182, 1262, 1263, 1268, 1526, 1577, 1578, 1580, 1581, 1583, or 1584 of SEQ ID NO: 410.

In some embodiments, the target gene is involved in liver metabolism. In some embodiments, the target gene is an inhibitor of the electron transport chain. In some embodiments, the target gene encodes the MCJ protein (MCJ/DnaJC15 or Methylation-Controlled J protein). In some embodiments, the MCJ protein is encoded by the mRNA sequence of SEQ ID NO: 411, which corresponds to the nucleotide sequence of GenBank Accession No. NM_013238.3, which is incorporated by reference in its entirety.

In some embodiments, the target gene is TAZ. In some embodiments, TAZ comprises the nucleotide sequence of SEQ ID NO: 412, which corresponds to the nucleotide sequence of GenBank Accession No. NM_000116.5, which is incorporated by reference in its entirety.

In some embodiments, the target gene is angiopoietin like 3 (ANGPTL3). In some embodiments, ANGPTL3 comprises the nucleotide sequence of SEQ ID NO: 413, which corresponds to the nucleotide sequence of GenBank Accession No. NM_014495.4, which is incorporated by reference in its entirety.

In some embodiments, the target gene is diacylglycerol acyltransferase 2 (DGAT2). In some embodiments, DGAT2 comprises the nucleotide sequence of SEQ ID NO: 414, which corresponds to the nucleotide sequence of GenBank Accession No. NM_001253891.1, which is incorporated by reference in its entirety.

Compositions

As indicated above, the present disclosure provides compositions comprising any of the siNA molecules, sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. The compositions may comprise 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or more siNA molecules described herein. The compositions may comprise a first nucleotide sequence comprising a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260. In some embodiments, the composition comprises a second nucleotide sequence comprising a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306. In some embodiments, the composition comprises a sense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444. In some embodiments, the composition comprises an antisense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539.

Alternatively, the compositions may comprise (a) a phosphorylation blocker; and (b) a short interfering nucleic acid (siNA). In some embodiments, the phosphorylation blocker is any of the phosphorylation blockers disclosed herein. In some embodiments, the siNA is any of the siNAs disclosed herein. In some embodiments, the siNA comprises any of the sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. In some embodiments, the siNA comprises any of the sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. In some embodiments, the siNA comprises one or more modified nucleotides. In some embodiments, the one or more modified nucleotides are independently selected from a 2′-fluoro nucleotide and a 2′-O-methyl nucleotide. In some embodiments, the 2′-fluoro nucleotide or the 2′-O-methyl nucleotide is independently selected from any of the 2′-fluoro or 2′-O-methyl nucleotide mimics disclosed herein. In some embodiments, the siNA comprises a nucleotide sequence comprising any of the modification patterns disclosed herein.

In some embodiments, the composition comprises (a) a conjugated moiety; and (b) a short interfering nucleic acid (siNA). In some embodiments, the conjugated moiety is any of the galactosomines disclosed herein. In some embodiments, the siNA is any of the siNAs disclosed herein. In some embodiments, the siNA comprises any of the sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. In some embodiments, the siNA comprises any of the sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. In some embodiments, the siNA comprises one or more modified nucleotides. In some embodiments, the one or more modified nucleotides are independently selected from a 2′-fluoro nucleotide and a 2′-O-methyl nucleotide. In some embodiments, the 2′-fluoro nucleotide or the 2′-O-methyl nucleotide is independently selected from any of the 2′-fluoro or 2′-O-methyl nucleotide mimics disclosed herein. In some embodiments, the siNA comprises a nucleotide sequence comprising any of the modification patterns disclosed herein.

In some embodiments, the composition comprises (a) a 5′-stabilized end cap; and (b) a short interfering nucleic acid (siNA). In some embodiments, the 5′-stabilized end cap is any of the 5-stabilized end caps disclosed herein. In some embodiments, the siNA is any of the siNAs disclosed herein. In some embodiments, the siNA comprises any of the sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. In some embodiments, the siNA comprises one or more modified nucleotides. In some embodiments, the one or more modified nucleotides are independently selected from a 2′-fluoro nucleotide and a 2′-O-methyl nucleotide. In some embodiments, the 2′-fluoro nucleotide or the 2′-O-methyl nucleotide is independently selected from any of the 2′-fluoro or 2′-O-methyl nucleotide mimics disclosed herein. In some embodiments, the siNA comprises a nucleotide sequence comprising any of the modification patterns disclosed herein.

In some embodiments, the composition comprises (a) at least one phosphorylation blocker, conjugated moiety, or 5′-stabilized end cap; and (b) a short interfering nucleic acid (siNA). In some embodiments, the phosphorylation blocker is any of the phosphorylation blockers disclosed herein. In some embodiments, the conjugated moiety is any of the galactosomines disclosed herein. In some embodiments, the 5′-stabilized end cap is any of the 5-stabilized end caps disclosed herein. In some embodiments, the siNA is any of the siNAs disclosed herein. In some embodiments, the siNA comprises any of the sense strands, antisense strands, first nucleotide sequences, or second nucleotide sequences described herein. In some embodiments, the siNA comprises one or more modified nucleotides. In some embodiments, the one or more modified nucleotides are independently selected from a 2′-fluoro nucleotide and a 2′-O-methyl nucleotide. In some embodiments, the 2′-fluoro nucleotide or the 2′-O-methyl nucleotide is independently selected from any of the 2′-fluoro or 2′-O-methyl nucleotide mimics disclosed herein. In some embodiments, the siNA comprises a nucleotide sequence comprising any of the modification patterns disclosed herein.

The composition may be a pharmaceutical composition. In some embodiments, the pharmaceutical composition comprises an amount of one or more of the siNA molecules described herein formulated with one or more pharmaceutically acceptable carriers (additives) and/or diluents. The pharmaceutical compositions may be specially formulated for administration in solid or liquid form, including those adapted for the following: (1) oral administration, for example, drenches (aqueous or non-aqueous solutions or suspensions), tablets, e.g., those targeted for buccal, sublingual, and systemic absorption, boluses, powders, granules, pastes for application to the tongue; (2) parenteral administration, for example, by subcutaneous, intramuscular, intravenous or epidural injection as, for example, a sterile solution or suspension, or sustained-release formulation; (3) topical application, for example, as a cream, ointment, or a controlled-release patch or spray applied to the skin; (4) intravaginally or intrarectally, for example, as a pessary, cream or foam; (5) sublingually; (6) ocularly; (7) transdermally; or (8) nasally.

The phrase “therapeutically-effective amount” as used herein means that amount of a compound, material, or composition comprising a siNA of the present disclosure which is effective for producing some desired therapeutic effect in at least a sub-population of cells in an animal at a reasonable benefit/risk ratio applicable to any medical treatment.

The phrase “pharmaceutically acceptable” is employed herein to refer to those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problem or complication, commensurate with a reasonable benefit/risk ratio.

Wetting agents, emulsifiers and lubricants, such as sodium lauryl sulfate and magnesium stearate, as well as coloring agents, release agents, coating agents, sweetening, flavoring and perfuming agents, preservatives and antioxidants can also be present in the compositions.

Examples of pharmaceutically-acceptable antioxidants include: (1) water soluble antioxidants, such as ascorbic acid, cysteine hydrochloride, sodium bisulfate, sodium metabisulfite, sodium sulfite and the like; (2) oil-soluble antioxidants, such as ascorbyl palmitate, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), lecithin, propyl gallate, alpha-tocopherol, and the like; and (3) metal chelating agents, such as citric acid, ethylenediamine tetraacetic acid (EDTA), sorbitol, tartaric acid, phosphoric acid, and the like.

Formulations of the present disclosure include those suitable for oral, nasal, topical (including buccal and sublingual), rectal, vaginal and/or parenteral administration. The formulations may conveniently be presented in unit dosage form and may be prepared by any methods well known in the art of pharmacy. The amount of active ingredient which can be combined with a carrier material to produce a single dosage form will vary depending upon the host being treated, the particular mode of administration. The amount of active ingredient which can be combined with a carrier material to produce a single dosage form will generally be that amount of the compound (e.g., siNA molecule) which produces a therapeutic effect. Generally, out of one hundred percent, this amount will range from about 0.1 percent to about ninety-nine percent of active ingredient, preferably from about 5 percent to about 70 percent, most preferably from about 10 percent to about 30 percent.

In certain embodiments, a formulation of the present disclosure comprises an excipient selected from the group consisting of cyclodextrins, celluloses, liposomes, micelle forming agents, e.g., bile acids, and polymeric carriers, e.g., polyesters and polyanhydrides; and a compound (e.g., siNA molecule) of the present disclosure. In certain embodiments, an aforementioned formulation renders orally bioavailable a compound (e.g., siNA molecule) of the present disclosure.

Methods of preparing these formulations or compositions include the step of bringing into association a compound (e.g., siNA molecule) of the present disclosure with the carrier and, optionally, one or more accessory ingredients. In general, the formulations are prepared by uniformly and intimately bringing into association a compound (e.g., siNA molecule) of the present disclosure with liquid carriers, or finely divided solid carriers, or both, and then, if necessary, shaping the product.

Formulations of the disclosure suitable for oral administration may be in the form of capsules, cachets, pills, tablets, lozenges (using a flavored basis, usually sucrose and acacia or tragacanth), powders, granules, or as a solution or a suspension in an aqueous or non-aqueous liquid, or as an oil-in-water or water-in-oil liquid emulsion, or as an elixir or syrup, or as pastilles (using an inert base, such as gelatin and glycerin, or sucrose and acacia) and/or as mouth washes and the like, each containing a predetermined amount of a compound (e.g., siNA molecule) of the present disclosure as an active ingredient. A compound (e.g., siNA molecule) of the present disclosure may also be administered as a bolus, electuary or paste.

In solid dosage forms of the disclosure for oral administration (capsules, tablets, pills, dragees, powders, granules, trouches and the like), the active ingredient is mixed with one or more pharmaceutically-acceptable carriers, such as sodium citrate or dicalcium phosphate, and/or any of the following: (1) fillers or extenders, such as starches, lactose, sucrose, glucose, mannitol, and/or silicic acid; (2) binders, such as, for example, carboxymethylcellulose, alginates, gelatin, polyvinyl pyrrolidone, sucrose and/or acacia; (3) humectants, such as glycerol; (4) disintegrating agents, such as agar-agar, calcium carbonate, potato or tapioca starch, alginic acid, certain silicates, and sodium carbonate; (5) solution retarding agents, such as paraffin; (6) absorption accelerators, such as quaternary ammonium compounds and surfactants, such as poloxamer and sodium lauryl sulfate; (7) wetting agents, such as, for example, cetyl alcohol, glycerol monostearate, and non-ionic surfactants; (8) absorbents, such as kaolin and bentonite clay; (9) lubricants, such as talc, calcium stearate, magnesium stearate, solid polyethylene glycols, sodium lauryl sulfate, zinc stearate, sodium stearate, stearic acid, and mixtures thereof; (10) coloring agents; and (11) controlled release agents such as crospovidone or ethyl cellulose.

In the case of capsules, tablets and pills, the pharmaceutical compositions may also comprise buffering agents. Solid compositions of a similar type may also be employed as fillers in soft and hard-shelled gelatin capsules using such excipients as lactose or milk sugars, as well as high molecular weight polyethylene glycols and the like.

A tablet may be made by compression or molding, optionally with one or more accessory ingredients. Compressed tablets may be prepared using binder (for example, gelatin or hydroxypropylmethyl cellulose), lubricant, inert diluent, preservative, disintegrant (for example, sodium starch glycolate or cross-linked sodium carboxymethyl cellulose), surface-active or dispersing agent. Molded tablets may be made by molding in a suitable machine a mixture of the powdered compound moistened with an inert liquid diluent.

The tablets, and other solid dosage forms of the pharmaceutical compositions of the present disclosure, such as dragees, capsules, pills and granules, may optionally be scored or prepared with coatings and shells, such as enteric coatings and other coatings well known in the pharmaceutical-formulating art. They may also be formulated so as to provide slow or controlled release of the active ingredient therein using, for example, hydroxypropylmethyl cellulose in varying proportions to provide the desired release profile, other polymer matrices, liposomes and/or microspheres. They may be formulated for rapid release, e.g., freeze-dried.

They may be sterilized by, for example, filtration through a bacteria-retaining filter, or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved in sterile water, or some other sterile injectable medium immediately before use. These compositions may also optionally contain opacifying agents and may be of a composition that they release the active ingredient(s) only, or preferentially, in a certain portion of the gastrointestinal tract, optionally, in a delayed manner. Examples of embedding compositions which can be used include polymeric substances and waxes. The active ingredient can also be in micro-encapsulated form, if appropriate, with one or more of the above-described excipients.

Liquid dosage forms for oral administration of the compounds (e.g., siNA molecules) of the disclosure include pharmaceutically acceptable emulsions, microemulsions, solutions, suspensions, syrups and elixirs. In addition to the active ingredient, the liquid dosage forms may contain inert diluents commonly used in the art, such as, for example, water or other solvents, solubilizing agents and emulsifiers, such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylene glycol, oils (I particular, cottonseed, groundnut, corn, germ, olive, castor and sesame oils), glycerol, tetrahydrofuryl alcohol, polyethylene glycols and fatty acid esters of sorbitan, and mixtures thereof.

Besides inert diluents, the oral compositions can also include adjuvants such as wetting agents, emulsifying and suspending agents, sweetening, flavoring, coloring, perfuming and preservative agents.

Suspensions, in addition to the active compounds (e.g., siNA molecules), may contain suspending agents as, for example, ethoxylated isostearyl alcohols, polyoxyethylene sorbitol and sorbitan esters, microcrystalline cellulose, aluminum metahydroxide, bentonite, agar-agar and tragacanth, and mixtures thereof.

Formulations of the pharmaceutical compositions of the disclosure for rectal or vaginal administration may be presented as a suppository, which may be prepared by mixing one or more compounds (e.g., siNA molecules) of the disclosure with one or more suitable nonirritating excipients or carriers comprising, for example, cocoa butter, polyethylene glycol, a suppository wax or a salicylate, and which is solid at room temperature, but liquid at body temperature and, therefore, will melt in the rectum or vaginal cavity and release the active compound (e.g., siNA molecule).

Formulations of the present disclosure which are suitable for vaginal administration also include pessaries, tampons, creams, gels, pastes, foams or spray formulations containing such carriers as are known in the art to be appropriate.

Dosage forms for the topical or transdermal administration of a compound (e.g., siNA molecule) of this disclosure include powders, sprays, ointments, pastes, creams, lotions, gels, solutions, patches and inhalants. The active compound (e.g., siNA molecule) may be mixed under sterile conditions with a pharmaceutically acceptable carrier, and with any preservatives, buffers, or propellants which may be required.

The ointments, pastes, creams and gels may contain, in addition to an active compound (e.g., siNA molecule) of this disclosure, excipients, such as animal and vegetable fats, oils, waxes, paraffins, starch, tragacanth, cellulose derivatives, polyethylene glycols, silicones, bentonites, silicic acid, talc and zinc oxide, or mixtures thereof.

Powders and sprays can contain, in addition to a compound (e.g., siNA molecule) of this disclosure, excipients such as lactose, talc, silicic acid, aluminum hydroxide, calcium silicates and polyamide powder, or mixtures of these substances. Sprays can additionally contain customary propellants, such as chlorofluorohydrocarbons and volatile unsubstituted hydrocarbons, such as butane and propane.

Transdermal patches have the added advantage of providing controlled delivery of a compound (e.g., siNA molecule) of the present disclosure to the body. Such dosage forms can be made by dissolving or dispersing the compound (e.g., siNA molecule) in the proper medium. Absorption enhancers can also be used to increase the flux of the compound (e.g., siNA molecule) across the skin. The rate of such flux can be controlled by either providing a rate controlling membrane or dispersing the compound (e.g., siNA molecule) in a polymer matrix or gel.

Ophthalmic formulations, eye ointments, powders, solutions and the like, are also contemplated as being within the scope of this invention.

Pharmaceutical compositions of this disclosure suitable for parenteral administration comprise one or more compounds (e.g., siNA molecules) of the disclosure in combination with one or more pharmaceutically-acceptable sterile isotonic aqueous or nonaqueous solutions, dispersions, suspensions or emulsions, or sterile powders which may be reconstituted into sterile injectable solutions or dispersions just prior to use, which may contain sugars, alcohols, antioxidants, buffers, bacteriostats, solutes which render the formulation isotonic with the blood of the intended recipient or suspending or thickening agents.

Examples of suitable aqueous and nonaqueous carriers which may be employed in the pharmaceutical compositions of the disclosure include water, ethanol, polyols (such as glycerol, propylene glycol, polyethylene glycol, and the like), and suitable mixtures thereof, vegetable oils, such as olive oil, and injectable organic esters, such as ethyl oleate. Proper fluidity can be maintained, for example, by the use of coating materials, such as lecithin, by the maintenance of the required particle size in the case of dispersions, and by the use of surfactants.

These compositions may also contain adjuvants such as preservatives, wetting agents, emulsifying agents and dispersing agents. Prevention of the action of microorganisms upon the subject compounds may be ensured by the inclusion of various antibacterial and antifungal agents, for example, paraben, chlorobutanol, phenol sorbic acid, and the like. It may also be desirable to include isotonic agents, such as sugars, sodium chloride, and the like into the compositions. In addition, prolonged absorption of the injectable pharmaceutical form may be brought about by the inclusion of agents which delay absorption such as aluminum monostearate and gelatin.

In some cases, in order to prolong the effect of a drug, it is desirable to slow the absorption of the drug from subcutaneous or intramuscular injection. This may be accomplished by the use of a liquid suspension of crystalline or amorphous material having poor water solubility. The rate of absorption of the drug then depends upon its rate of dissolution which, in turn, may depend upon crystal size and crystalline form. Alternatively, delayed absorption of a parenterally-administered drug form is accomplished by dissolving or suspending the drug in an oil vehicle.

Injectable depot forms are made by forming microencapsule matrices of the subject compounds (e.g., siNA molecules) in biodegradable polymers such as polylactide-polyglycolide. Depending on the ratio of drug to polymer, and the nature of the particular polymer employed, the rate of drug release can be controlled. Examples of other biodegradable polymers include poly(orthoesters) and poly(anhydrides). Depot injectable formulations are also prepared by entrapping the drug in liposomes or microemulsions which are compatible with body tissue.

When the compounds (e.g., siNA molecules) of the present disclosure are administered as pharmaceuticals, to humans and animals, they can be given per se or as a pharmaceutical composition containing, for example, 0.1 to 99% (more preferably, 10 to 30%) of active ingredient in combination with a pharmaceutically acceptable carrier.

Methods of Treatment and Administration

The siNA molecules of the present disclosure may be used to treat a disease in a subject in need thereof. In some embodiments, a method of treating a disease in a subject in need thereof comprises administering to the subject any of the siNA molecules disclosed herein. In some embodiments, a method of treating a disease in a subject in need thereof comprises administering to the subject any of the compositions disclosed herein.

The preparations (e.g., siNA molecules or compositions) of the present disclosure may be given orally, parenterally, topically, or rectally. They are of course given in forms suitable for each administration route. For example, they are administered in tablets or capsule form, administration by injection, infusion or inhalation; topical by lotion or ointment; and rectal by suppositories. Oral administrations are preferred.

The phrases “parenteral administration” and “administered parenterally” as used herein means modes of administration other than enteral and topical administration, usually by injection, and includes, without limitation, intravenous, intramuscular, intraarterial, intrathecal, intracapsular, intraorbital, intracardiac, intradermal, intraperitoneal, transtracheal, subcutaneous, subcuticular, intraarticular, subcapsular, subarachnoid, intraspinal and intrasternal injection and infusion.

The phrases “systemic administration,” “administered systemically,” “peripheral administration” and “administered peripherally” as used herein mean the administration of a compound, drug or other material other than directly into the central nervous system, such that it enters the patient's system and, thus, is subject to metabolism and other like processes, for example, subcutaneous administration.

These compounds may be administered to humans and other animals for therapy by any suitable route of administration, including orally, nasally, as by, for example, a spray, rectally, intravaginally, parenterally, intracisternally and topically, as by powders, ointments or drops, including buccally and sublingually.

Regardless of the route of administration selected, the compounds (e.g., siNA molecules) of the present disclosure, which may be used in a suitable hydrated form, and/or the pharmaceutical compositions of the present disclosure, are formulated into pharmaceutically-acceptable dosage forms by conventional methods known to those of skill in the art.

Actual dosage levels of the active ingredients in the pharmaceutical compositions of this disclosure may be varied so as to obtain an amount of the active ingredient which is effective to achieve the desired therapeutic response for a particular patient, composition, and mode of administration, without being toxic to the patient.

The selected dosage level will depend upon a variety of factors including the activity of the particular compound (e.g., siNA molecule) of the present disclosure employed, or the ester, salt or amide thereof, the route of administration, the time of administration, the rate of excretion or metabolism of the particular compound being employed, the rate and extent of absorption, the duration of the treatment, other drugs, compounds and/or materials used in combination with the particular compound employed, the age, sex, weight, condition, general health and prior medical history of the patient being treated, and like factors well known in the medical arts.

A physician or veterinarian having ordinary skill in the art can readily determine and prescribe the effective amount of the pharmaceutical composition required. For example, the physician or veterinarian could start doses of the compounds (e.g., siNA molecules) of the disclosure employed in the pharmaceutical composition at levels lower than that required in order to achieve the desired therapeutic effect and gradually increase the dosage until the desired effect is achieved.

In general, a suitable daily dose of a compound (e.g., siNA molecule) of the disclosure is the amount of the compound that is the lowest dose effective to produce a therapeutic effect. Such an effective dose generally depends upon the factors described above. Preferably, the compounds are administered at about 0.01 mg/kg to about 200 mg/kg, more preferably at about 0.1 mg/kg to about 100 mg/kg, even more preferably at about 0.5 mg/kg to about 50 mg/kg. In some embodiments, the compound is administered at a dose equal to or greater than 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, or 1 mg/kg. In some embodiments, the compound is administered at a dose equal to or less than 200, 190, 180, 170, 160, 150, 140, 130, 120, 110, 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, or 15 mg/kg. In some embodiments, the total daily dose of the compound is equal to or greater than 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, or 100 mg.

When the compounds (e.g., siNA molecules) described herein are co-administered with another, the effective amount may be less than when the compound is used alone.

If desired, the effective daily dose of the active compound (e.g., siNA molecule) may be administered as two, three, four, five, six or more sub-doses administered separately at appropriate intervals throughout the day, optionally, in unit dosage forms. Preferred dosing is one administration per day. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 times a week. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 times a month. In some embodiments, the compound is administered once every 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 days. In some embodiments, the compound is administered once every 1, 2, 3, 4, 5, 6, 7, or 8 weeks.

Diseases

The siNA molecules and compositions described herein may be administered to a subject to treat a disease. Further disclosed herein are uses of any of the siNA molecules or compositions disclosed herein in the manufacture of a medicament for treating a disease.

In some embodiments, the disease is a viral disease. In some embodiments, the viral disease is caused by a DNA virus. In some embodiments, the DNA virus is a double stranded DNA (dsDNA virus). In some embodiments, the dsDNA virus is a hepadnavirus. In some embodiments, the hepadnavirus is a hepatitis B virus (HBV).

In some embodiments, the disease is a liver disease. In some embodiments, the liver disease is nonalcoholic fatty liver disease (NAFLD). In some embodiments, the NAFLD is nonalcoholic steatohepatitis (NASH). In some embodiments, the liver disease is hepatocellular carcinoma (HCC).

Administration of siNA

Administration of any of the siNAs disclosed herein may be conducted by methods known in the art. In some embodiments, the siNA is administered by subcutaneous (SC) or intravenous (IV) delivery. The preparations (e.g., siNAs or compositions) of the present disclosure may be given orally, parenterally, topically, or rectally. They are of course given in forms suitable for each administration route. For example, they are administered in tablets or capsule form, administration by injection, infusion or inhalation; topical by lotion or ointment; and rectal by suppositories. In some embodiments, subcutaneous administration is preferred.

Regardless of the route of administration selected, the compounds (e.g., siNAs) of the present disclosure, which may be used in a suitable hydrated form, and/or the pharmaceutical compositions of the present disclosure, are formulated into pharmaceutically-acceptable dosage forms by conventional methods known to those of skill in the art.

The selected dosage level will depend upon a variety of factors including the activity of the particular compound (e.g., siNA) of the present disclosure employed, or the ester, salt or amide thereof, the route of administration, the time of administration, the rate of excretion or metabolism of the particular compound being employed, the rate and extent of absorption, the duration of the treatment, other drugs, compounds and/or materials used in combination with the particular compound employed, the age, sex, weight, condition, general health and prior medical history of the patient being treated, and like factors well known in the medical arts.

A physician or veterinarian having ordinary skill in the art can readily determine and prescribe the effective amount of the pharmaceutical composition required. For example, the physician or veterinarian could start doses of the compounds (e.g., siNAs) of the disclosure employed in the pharmaceutical composition at levels lower than that required in order to achieve the desired therapeutic effect and gradually increase the dosage until the desired effect is achieved.

In general, a suitable daily dose of a compound (e.g., siNA) of the disclosure is the amount of the compound that is the lowest dose effective to produce a therapeutic effect. Such an effective dose generally depends upon the factors described above. Preferably, the compounds are administered at about 0.01 mg/kg to about 200 mg/kg, more preferably at about 0.1 mg/kg to about 100 mg/kg, even more preferably at about 0.5 mg/kg to about 50 mg/kg. In some embodiments, the compound is administered at about 1 mg/kg to about 40 mg/kg, about 1 mg/kg to about 30 mg/kg, about 1 mg/kg to about 20 mg/kg, about 1 mg/kg to about 15 mg/kg, or 1 mg/kg to about 10 mg/kg. In some embodiments, the compound is administered at a dose equal to or greater than 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, or 1 mg/kg. In some embodiments, the compound is administered at a dose equal to or greater than 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 mg/kg. In some embodiments, the compound is administered at a dose equal to or less than 200, 190, 180, 170, 160, 150, 140, 130, 120, 110, 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, or 15 mg/kg. In some embodiments, the total daily dose of the compound is equal to or greater than 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, or 100 mg.

If desired, the effective daily dose of the active compound (e.g., siNA) may be administered as two, three, four, five, six, seven, eight, nine, ten or more doses or sub-doses administered separately at appropriate intervals throughout the day, optionally, in unit dosage forms. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 times. Preferred dosing is one administration per day. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 times a week. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 times a month. In some embodiments, the compound is administered once every 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 days. In some embodiments, the compound is administered every 3 days. In some embodiments, the compound is administered once every 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 weeks. In some embodiments, the compound is administered every month. In some embodiments, the compound is administered once every 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 months. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, or 53 times over a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 days. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, or 53 times over a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, or 53 weeks. In some embodiments, the compound is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, or 53 times over a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, or 53 months. In some embodiments, the compound is administered at least once a week for a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 weeks. In some embodiments, the compound is administered at least once a week for a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 months. In some embodiments, the compound is administered at least twice a week for a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 weeks. In some embodiments, the compound is administered at least twice a week for a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 months. In some embodiments, the compound is administered at least once every two weeks for a period of at least 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 weeks. In some embodiments, the compound is administered at least once every two weeks for a period of at least 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 months. In some embodiments, the compound is administered at least once every four weeks for a period of at least 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 weeks. In some embodiments, the compound is administered at least once every four weeks for a period of at least 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, or 70 months.

In some embodiments, any one of the siNAs or compositions disclosed herein is administered in a particle or viral vector. In some embodiments, the viral vector is a vector of adenovirus, adeno-associated virus (AAV), alphavirus, flavivirus, herpes simplex virus, lentivirus, measles virus, picornavirus, poxvirus, retrovirus, or rhabdovirus. In some embodiments, the viral vector is a recombinant viral vector. In some embodiments, the viral vector is selected from AAVrh.74, AAVrh.10, AAVrh.20, AAV-1, AAV-2, AAV-3, AAV-4, AAV-5, AAV-6, AAV-7, AAV-8, AAV-9, AAV-10, AAV-11, AAV-12 and AAV-13.

The subject of the described methods may be a mammal, and it includes humans and non-human mammals. In some embodiments, the subject is a human, such as an adult human.

Some embodiments include a method for treating an HBV virus in a subject infected with the virus comprising administering a therapeutically effective amount of one or more siNA of the present disclosure or a composition of the present disclosure to the subject in need thereof thereby reducing the viral load of the virus in the subject and/or reducing a level of a virus antigen in the subject. The siNA may be complementary or hybridize to a portion of the target RNA in the virus, e.g., an X region and/or an S region of HBV.

Combination Therapies

Any of the methods disclosed herein may further comprise administering to the subject an additional HBV treatment agent. Any of the compositions disclosed herein may further comprise an additional HBV treatment agent. In some embodiments, the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy. In some embodiments, the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158. In some embodiments, the oligonucleotide therapy is selected from Nucleic Acid Polymers or S-Antigen Transport-inhibiting Oligonucleotide Polymers (NAPs or STOPS), siRNA, and ASO. In some embodiments, the oligonucleotide therapy is an additional siNA. In some embodiments, the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178. In some embodiments, the oligonucleotide therapy is an antisense oligonucleotide (ASO). In some embodiments, the ASO is ASO 1. In some embodiments, any of the siNAs disclosed herein are co-administered with STOPS. Exemplary STOPS are described in International Publication No. WO2020/097342 and U.S. Publication No. 2020/0147124, both of which are incorporated by reference in their entirety. In some embodiments, the STOPS is ALG-010133. In some embodiments, any of the siNAs disclosed herein are co-administered with tenofovir. In some embodiments, any of the siNAs disclosed herein are co-administered with a CAM. Exemplary CAMs are described in Berke et al., Antimicrob Agents Chemother, 2017, 61(8):e00560-17, Klumpp, et al., Gastroenterology, 2018, 154(3):652-662.e8, International Application Nos. PCT/US2020/017974, PCT/US2020/026116, and PCT/US2020/028349 and U.S. application Ser. Nos. 16/789,298, 16/837,515, and 16/849,851, each which is incorporated by reference in its entirety. In some embodiments, the CAM is ALG-000184, ALG-001075, ALG-001024, JNJ-632, BAY41-4109, or NVR3-778. In some embodiments, the siNA and the HBV treatment agent are administered simultaneously. In some embodiments, the siNA and the HBV treatment agent are administered concurrently. In some embodiments, the siNA and the HBV treatment agent are administered sequentially. In some embodiments, the siNA is administered prior to administering the HBV treatment agent. In some embodiments, the siNA is administered after administering the HBV treatment agent. In some embodiments, the siNA and the HBV treatment agent are in separate containers. In some embodiments, the siNA and the HBV treatment agent are in the same container.

Any of the methods disclosed herein may further comprise administering to the subject a liver disease treatment agent. Any of the compositions disclosed herein may further comprise a liver disease treatment agent. In some embodiments, the liver disease treatment agent is selected from a peroxisome proliferator-activator receptor (PPAR) agonist, farnesoid X receptor (FXR) agonist, lipid-altering agent, and incretin-based therapy. In some embodiments, the PPAR agonist is selected from a PPARα agonist, dual PPARα/δ agonist, PPARγ agonist, and dual PPARα/γ agonist. In some embodiments, the dual PPARα agonist is a fibrate. In some embodiments, the PPARα/δ agonist is elafibranor. In some embodiments, the PPARγ agonist is a thiazolidinedione (TZD). In some embodiments, TZD is pioglitazone. In some embodiments, the dual PPARα/γ agonist is saroglitazar. In some embodiments, the FXR agonist is obeticholic acis (OCA). In some embodiments, the lipid-altering agent is aramchol. In some embodiments, the incretin-based therapy is a glucagon-like peptide 1 (GLP-1) receptor agonist or dipeptidyl peptidase 4 (DPP-4) inhibitor. In some embodiments, the GLP-1 receptor agonist is exenatide or liraglutide. In some embodiments, the DPP-4 inhibitor is sitagliptin or vildagliptin. In some embodiments, the siNA and the liver disease treatment agent are administered concurrently. In some embodiments, the siNA and the liver disease treatment agent are administered sequentially. In some embodiments, the siNA is administered prior to administering the liver disease treatment agent. In some embodiments, the siNA is administered after administering the liver disease treatment agent. In some embodiments, the siNA and the liver disease treatment agent are in separate containers. In some embodiments, the siNA and the liver disease treatment agent are in the same container.

Definitions

Unless defined otherwise, all technical and scientific terms used herein have the meaning commonly understood by a person skilled in the art to which this disclosure belongs. The following references provide one of skill with a general definition of many of the terms used in this invention: Singleton et al., Dictionary of Microbiology and Molecular Biology (2nd ed. 1994); The Cambridge Dictionary of Science and Technology (Walker ed., 1988); The Glossary of Genetics, 5th Ed., R. Rieger et al., (eds.), Springer Verlag (1991); and Hale & Marham, The Harper Collins Dictionary of Biology (1991). As used herein, the following terms have the meanings ascribed to them below, unless specified otherwise. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

The terms “a” and “an” as used herein mean “one or more” and include the plural unless the context is inappropriate.

As used herein, the terms “patient” and “subject” refer to organisms to be treated by the methods of the present disclosure. Such organisms are preferably mammals (e.g., marines, simians, equines, bovines, porcinis, canines, felines, and the like), and more preferably humans.

As used herein, the term “effective amount” refers to the amount of a compound (e.g., a siNA of the present disclosure) sufficient to effect beneficial or desired results. A_neffective amount can be administered in one or more administrations, applications, or dosages and is not intended to be limited to a particular formulation or administration route.

As used herein, the term “treating” includes any effect, e.g., lessening, reducing, modulating, ameliorating or eliminating, that results in the improvement of the condition, disease, disorder, and the like, or ameliorating a symptom thereof.

As used herein, the terms “alleviate” and “alleviating” refer to reducing the severity of the condition, such as reducing the severity by, for example, at least 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 95%.

As used herein, the term “pharmaceutical composition” refers to the combination of an active agent with a carrier, inert or active, making the composition especially suitable for diagnostic or therapeutic use in vivo or ex vivo.

As used herein, the term “pharmaceutically acceptable carrier” refers to any of the standard pharmaceutical carriers, such as a phosphate buffered saline solution, water, emulsions (e.g., such as an oil/water or water/oil emulsions), and various types of wetting agents. The compositions also can include stabilizers and preservatives. For examples of carriers, stabilizers and adjuvants, see, for example, Martin, Remington's Pharmaceutical Sciences, 15th Ed., Mack Publ. Co., Easton, Pa. [1975].

The term “about” as used herein when referring to a measurable value (e.g., weight, time, and dose) is meant to encompass variations, such as ±10%, ±5%, ±1%, or ±0.1% of the specified value.

As used herein, the term “nucleobase” refers to a nitrogen-containing biological compound that forms a nucleoside. Examples of nucleobases include, but are not limited to, thymine, uracil, adenine, cytosine, guanine, aryl, heteroaryl, and an analogue or derivative thereof.

Throughout the description, where compositions are described as having, including, or comprising specific components, or where processes and methods are described as having, including, or comprising specific steps, it is contemplated that, additionally, there are compositions of the present disclosure that consist essentially of, or consist of, the recited components, and that there are processes and methods according to the present disclosure that consist essentially of, or consist of, the recited processing steps.

As a general matter, compositions specifying a percentage are by weight unless otherwise specified. Further, if a variable is not accompanied by a definition, then the previous definition of the variable controls.

All publications and patents cited in this specification are herein incorporated by reference as if each individual publication or patent were specifically and individually indicated to be incorporated by reference and are incorporated herein by reference to disclose and describe the methods and/or materials in connection with which the publications are cited. The citation of any publication is for its disclosure prior to the filing date and should not be construed as an admission that the present invention is not entitled to antedate such publication by virtue of prior invention. Further, the dates of publication provided may be different from the actual publication dates that may need to be independently confirmed.

EXAMPLES
Example 1. siNA Synthesis

This example describes an exemplary method for synthesizing ds-siNAs, such as the siNAs disclosed in Table 6 (as identified by the ds-siNA ID).

The 2′-OMe phosphoramidite 5′-O-DMT-deoxy Adenosine (NH-Bz), 3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite, 5′-O-DMT-deoxy Guanosine (NH-ibu), 3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite, 5′-O-DMT-deoxy Cytosine (NH-Bz), 3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite, 5′-O-DMT-Uridine 3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite and solid supports were purchased from Chemgenes Corp. MA.

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The 2′-F-5′-O-DMT-(NH-Bz) Adenosine-3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite, 2′-F-5′-O-DMT-(NH-ibu)-Guanosine, 3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite, 5′-O-DMT-(NH-Bz)-Cytosine, 2′-F-3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite, 5′-O-DMT-Uridine, 2′-F-3′-O-(2-cyanoethyl-N,N-diisopropyl phosphoramidite and solid supports were purchased from Thermo Fischer Milwaukee Wis., USA.

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All the monomers were dried in vacuum desiccator with desiccants (P₂O₅, RT 24 h). The solid supports (CPG) attached to the nucleosides and universal supports was obtained from LGC and Chemgenes. The chemicals and solvents for post synthesis workflow were purchased from commercially available sources like VWR/Sigma and used without any purification or treatment. Solvent (Acetonitrile) and solutions (amidite and activator) were stored over molecular sieves during synthesis.

The oligonucleotides were synthesized on a DNA/RNA Synthesizers (Expedite 8909 or ABI-394) using standard oligonucleotide phosphoramidite chemistry starting from the 3′ residue of the oligonucleotide preloaded on CPG support. An extended coupling of 0.1 M solution of phosphoramidite in CH₃CN in the presence of 5-(ethylthio)-1H-tetrazole activator to a solid bound oligonucleotide followed by standard capping, oxidation and deprotection afforded modified oligonucleotides. The 0.1 M 12, THF:Pyridine; Water-7:2:1 was used as oxidizing agent while DDTT ((dimethylamino-methylidene)amino)-3H-1,2,4-dithiazaoline-3-thione was used as the sulfur-transfer agent for the synthesis of oligoribonucleotide phosphorothioates. The stepwise coupling efficiency of all modified phosphoramidites was more than 98%.

Reagents
Detailed Description

Deblock Solution
3% Dichloroacetic acid (DCA) in

Dichloromethane (DCM)

Amidite Concentration
0.1M in Anhydrous Acetonitrile

Activator
0.25M Ethyl-thio-Tetrazole (ETT)

Cap-A solution
Acetic anhydride in Pyridine/THF

Cap-B Solution
16% 1-Methylimidazole in THF

Oxidizing Solution
0.02M I₂, THF: Pyridine; Water-7:2:1

Sulfurizing Solution
0.2M DDTT in Pyridine/Acetonitrile 1:1

Cleavage and Deprotection:

Deprotection and cleavage from the solid support was achieved with mixture of ammonia methylamine (1:1, AMA) for 15 min at 65° C., when the universal linker was used, the deprotection was left for 90 min at 65° C. or solid supports were heated with aqueous ammonia (28%) solution at 55° C. for 16 h to deprotect the base labile protecting groups.

Quantitation of Crude SiNA or Raw Analysis

Samples were dissolved in deionized water (1.0 mL) and quantitated as follows: Blanking was first performed with water alone (2 ul) on Nanodrop then Oligo sample reading obtained at 260 nm. The crude material is dried down and stored at −20° C.

Crude HPLC/LC-MS Analysis

The 0.1 OD of the crude samples were analyzed for crude HPLC and LC-MS analysis. After Confirming the crude LC-MS data then purification step was performed.

HPLC Purification

The unconjugated and GalNac modified oligonucleotides were purified by anion-exchange HPLC. The buffers were 20 mM sodium phosphate in 10% CH₃CN, pH 8.5 (buffer A) and 20 mM sodium phosphate in 10% CH₃CN, 1.0 M NaBr, pH 8.5 (buffer B). Fractions containing full-length oligonucleotides were pooled.

Desalting of Purified SiNA

The purified dry siNA was then desalted using Sephadex G-25 M (Amersham Biosciences). The cartridge was conditioned with 10 mL of deionized water thrice. Finally, the purified siNA dissolved thoroughly in 2.5 mL RNAse free water was applied to the cartridge with very slow drop wise elution. The salt free siNA was eluted with 3.5 ml deionized water directly into a screw cap vial.

IEX HPLC and Electrospray LC/MS Analysis

Approximately 0.10 OD of siNA is dissolved in water and then pipetted in special vials for IEX-HPLC and LC/MS analysis. Analytical HPLC and ES LC-MS established the integrity of the compounds.

Duplex Preparation:

Single strand oligonucleotides (Sense and Antisense strands) were annealed (1:1 by molar equivalents, heat 90° C. for 3 min followed by room temperature, 20 min) to give the duplex ds-siNA. The final compounds were analyzed on size exclusion chromatography (SEC).

Example 2. ds-siNA Activity

This example investigates the activity of the ds-siNAs synthesized in Example 1.

Homo sapiens HepG2.2.15 cells were cultured in Dulbecco's Modified Eagle's Medium (DMEM) (ATCC 30-2002) supplemented to also contain 10% fetal calf serum (FCS). Cells were incubated at 37° C. in an atmosphere with 5% CO₂in a humidified incubator. For transfection of HepG2.2.15 cells with HBV targeting siRNAs, cells were seeded at a density of 15000 cells/well in 96-well regular tissue culture plates. Transfection of cells was carried out using RNAiMAX (Invitrogen/Life Technologies) according to the manufacturer's instructions. Dose-response experiments were done with oligo concentrations of 40, 20, 10, 5, 2.5, 1.25, 0.625, 0.3125, 0.15625 and 0.07813 nM. For each HBV targeting siRNA treatment (e.g., ds-siRNA, as identified by the ds-siNA ID in Table 6), four wells were transfected in parallel, and individual data points were collected from each well. After 24 h of incubation with siRNA, media was removed, and cells were lysed and analyzed with a QuantiGene2.0 branched DNA (bDNA) probe set specific for HBV genotype D (also called Hepatitis B virus subtype ayw, complete genome of 3182 base-pairs) as present in cell line HepG2.2.15.

For each well, the HBV on-target mRNA levels were normalized to the GAPDH mRNA level. As shown in Table 6, the activity of the HBV targeting ds-siRNAs was expressed as EC50, 50% reduction of normalized HBV RNA level from no drug control. As shown in Table 6, the cytotoxicity of the HBV targeting ds-siRNAs was expressed by CC50 of 50% reduction of GAPDH mRNA from no drug control.

Example 3. Use of ds-siNAs to Treat Hepatitis B Virus Infection

In this example, the ds-siNAs synthesized in Example 1 are used to treat a hepatitis B virus infection in a subject. Generally, a composition comprising a ds-siNA from Table 6 (as identified by the ds-siNA ID) and a pharmaceutically acceptable carrier is administered to the subject suffering from hepatitis B virus. The ds-siNA from Table 6 is conjugated to N-acetylgalactosamine. The ds-siNA is administered at a dose of 0.3 to 5 mg/kg every three weeks by subcutaneous injection or intravenous infusion.

Example 4. ds-siNA Hepatitis B Clinical Trial

In this example, the ds-siNAs from Tables 6A and 6B (as identified by the ds-siNA ID) will be evaluated for safety and efficacy in healthy volunteers and chronic hepatitis B patients.

ds-siNAs are being developed for the treatment of chronic hepatitis B (CB) in adults. The study will be conducted in 3 parts, a single ascending-dose (SAD) phase in healthy volunteers (Group A), a single-dose (SD) phase in patients with CHB (Group B), and a multiple ascending-dose (MAD) phase in patients with CHB (Group C).

Study Design

Study Type :
Interventional (Clinical Trial)

Estimated
50 participants

Enrollment:

Allocation:
Randomized

Intervention
Sequential Assignment

Model:

Intervention
Progression from the SAD phase to the first

Model
cohort in the MAD phase is

Description:
contingent upon the Safety Review

Committee (SRC) review of a

minimum of 14 days post-dose safety and

tolerability data from all HV in

at least the first 2 SAD cohorts. The SRC

will select one (or more) well-

tolerated dose(s) from the SAD phase

for administration in the SD and

MAD phases. In all study phases,

dosing will be staggered with the use

of sentinel participants to allow time

for the assessment of safety before

additional subjects are exposed to study drug.

Masking:
Triple (Participant, Care Provider, Investigator)

Masking
This is a double-blind placebo-

Description:
controlled study in which the study site

team, the Sponsor, and the

participants will be blinded to

treatment assignment. The unblinded pharmacist

will cover each syringe, prior to

transport to the bedside, to ensure

blinding. Participants will be centrally

assigned to randomized study

intervention using an Interactive

Voice/Web Response System (IVRS/IWRS).

Primary
Treatment

Purpose:

Arms and Interventions

Arm
Intervention/treatment

Experimental: Cohort A1 ds-siNA
Drug: ds-siNA

Single dose, Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

0.1 mg/kg of ds-siNA (HV)
interference (RNAi) drug that consists of double-

stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort Al
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

Single dose, Subcutaneous injection of
Other Name: Placebo

0.1 mg/kg of Placebo for ds-siNA (HV)

Experimental: Cohort A2 ds-siNA
Drug: ds-siNA

Single dose, Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

1.5 mg/kg of ds-siNA (HV)
interference (RNAi) drug that consists of double-

stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort A2
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

Single dose, Subcutaneous injection of
Other Name: Placebo

1.5 mg/kg of Placebo for ds-siNA (HV)

Experimental: Cohort A3 ds-siNA
Drug: ds-siNA

Single dose, Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

3 mg/kg of ds-siNA (HV)
interference (RNAi) drug that consists of double-

stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort A3
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

Single dose, Subcutaneous injection of
Other Name: Placebo

3 mg/kg of Placebo for ds-siNA (HV)

Experimental: Cohort A4 ds-siNA
Drug: ds-siNA

Single dose, Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

6 mg/kg of ds-siNA (HV)
interference (RNAi) drug that consists of double-

stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort A4
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

Single dose, Subcutaneous injection of
Other Name: Placebo

6 mg/kg of Placebo for ds-siNA (HV)

Experimental: Cohort A5 ds-siNA
Drug: ds-siNA

Single dose, Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

12 mg/kg of ds-siNA (HV)
interference (RNAi) drug that consists of double-

stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort A5
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

Single dose, Subcutaneous injection of
Other Name: Placebo

12 mg/kg of Placebo for ds-siNA (HV)

Experimental: Cohort B ds-siNA
Drug: ds-siNA

Single dose, Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

3 mg/kg of for ds-siNA (NUC naive,
interference (RNAi) drug that consists of double-

CHB)
stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort B
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

Single dose, Subcutaneous injection of
Other Name: Placebo

3 mg/kg of Placebo for ds-siNA (NUC

naive, CHB)

Experimental: Cohort C1 ds-siNA
Drug: ds-siNA

4 doses- Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

1.5 mg/kg of ds-siNA administered
interference (RNAi) drug that consists of double-

every 28 days (NUC experienced,
stranded oligonucleotides conjugated to an N-

CHB)
acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort C1
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

4 doses- Subcutaneous injection of
Other Name: Placebo

1.5 mg/kg of Placebo for ds-siNA

administered every 28 days (NUC

experienced, CHB)

Experimental: Cohort C2 ds-siNA
Drug: ds-siNA

4 doses- Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

3 mg/kg of ds-siNA administered every
interference (RNAi) drug that consists of double-

28 days (NUC experienced, CHB)
stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort C2
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

4 doses- Subcutaneous injection of
Other Name: Placebo

3 mg/kg of Placebo for ds-siNA

administered every 28 days (NUC

experienced, CHB)

Experimental: Cohort C3 ds-siNA
Drug: ds-siNA

4 doses- Subcutaneous injection of
ds-siNA is a synthetic ribonucleic acid

6 mg/kg of ds-siNA administered every
interference (RNAi) drug that consists of double-

28 days (NUC experienced, CHB)
stranded oligonucleotides conjugated to an N-

acetyl-D-galactosamine (GalNAc) ligand. ds-

siNA, sterile solution of the ds-siNA at a

concentration of 185 mg/mL in water for

injection (WFI).

Placebo Comparator: Cohort C3
Drug: Placebo for ds-siNA

Placebo
Sterile 9% saline for injection.

4 doses- Subcutaneous injection of
Other Name: Placebo

6 mg/kg of Placebo for ds-siNA

administered every 28 days (NUC

experienced, CHB)

Outcome Measures

Primary Outcome Measures:

Number of healthy volunteers with Adverse Events as assessed by CTCAE v5.0 [Time Frame: 4 weeks]

Number of participants with abnormalities in vital signs, electrocardiogram (ECG), and clinically significant laboratory findings

Number participants with non-cirrhotic chronic Hepatitis B with Adverse Events as assessed by CTCAE v5.0 [Time Frame: 16 weeks]

Number of participants with abnormalities in vital signs, electrocardiogram (ECG), and clinically significant laboratory findings.

Secondary Outcome Measures:

To characterize the pharmacokinetics of ds-siNA in healthy volunteers by monitoring plasma pharmacokinetics profiles of [Time Frame: 4 weeks] Measure the amount of ds-siNA excreted in urine

To characterize the pharmacokinetics of ds-siNA in healthy volunteers by monitoring through concentrations of [Time Frame: 4 weeks]

Measure the amount of ds-siNA renal clearance (CLR).

To characterize the pharmacokinetics of ds-siNA in participants with non-cirrhotic CHB by monitoring plasma pharmacokinetics profiles of ds-siNA. [Time Frame: 12 weeks]

Measure the amount of ds-siNA excreted in urine

To characterize the pharmacokinetics of ds-siNA in participants with non-cirrhotic CHB by monitoring through concentrations of ds-siNA. [Time Frame: 12 weeks]

Measure ds-siNA renal clearance (CLR).

Other Outcome Measures:

To evaluate the preliminary antiviral efficacy of ds-siNA in participants with CHB by monitoring changes in serum HBsAg levels (all Group B and C participants) during and after single dose and 12 weeks of treatment with DCR HBVS. [Time Frame: 12 weeks]

Proportion of participants achieving at least a 1-log reduction in HBsAg and achieving a HBsAg level <100 IU/mL at last scheduled visit Time to HBsAg loss (Kaplan-Mayer) Time to anti-HBs seroconversion

To evaluate the preliminary antiviral efficacy of ds-siNA in participants with CHB by monitoring HBeAg levels (HBeAg+ participants only) during and after single dose and 12 weeks of treatment with DCR HBVS. [Time Frame: 12 weeks]

% of participants with HBeAg loss and anti HBe at last scheduled visit (if HBeAg positive at study entry)

To evaluate the preliminary antiviral efficacy of ds-siNA in participants with CHB by monitoring HBV DNA levels (all Group B and C participants) during and after single dose and 12 weeks of treatment with DCR HBVS. [Time Frame: 12 weeks]

Proportion of participants achieving HBV DNA<2000 IU/mL (if >2,000 IU/mL at Baseline); and proportion of participants achieving PCR-nondetectable HBV DNA (if HBV DNA was detectable at Baseline).

To characterize the pharmacodynamics (PD) of ds-siNA on plasma levels of HBsAg and HBV in blood. [Time Frame: 12 weeks]

Track post-treatment duration of any observed efficacy effects.

Eligibility Criteria

Ages Eligible for Study:
18 Years to 65 Years (Adult, Older Adult)

Sexes Eligible for Study:
All

Accepts Healthy Volunteers:
Yes

Inclusion Criteria:

Healthy at the time of screening as determined by medical evaluation.

Capable of giving informed consent.

12-lead ECG within normal limits or with no clinically significant abnormalities.

Negative screen for alcohol or drugs of abuse.

Non-smokers for at least 3 months with a negative urinary cotinine concentration at screening.

BMI within range 18.0-32.0 kg/m2 (inclusive).

Female participants not pregnant, not breastfeeding, and not of childbearing potential or willing to follow contraceptive guidance.

Chronic hepatitis B infection (Group B and C only).

Clinical history compatible with compensated liver disease with no evidence of cirrhosis (Group B and C only).

Continuously on nucleotides (NUC) therapy for at least 12 weeks prior to screening (Group C only).

Exclusion Criteria:

History of any medical condition that may interfere with the absorption, distribution, or elimination of study drug.

Poorly controlled or unstable hypertension.

History of diabetes mellitus treated with insulin or hypoglycemic agents.

History of asthma requiring hospital admission within the preceding 12 months.

Evidence of G-6-PD deficiency.

Currently poorly controlled endocrine conditions, excluding thyroid conditions.

History of multiple drug allergies or history of allergic reaction to an oligonucleotide or GalNAc.

Clinically relevant surgical history.

Use of prescription medications (excluding contraception for women) within 4 weeks prior to the administration of study intervention.

Use of clinically relevant over-the-counter medication or supplements (excluding routine vitamins) within 7 days of first dosing.

Has received an investigational agent within the 3 months prior to dosing or is in follow-up of another study.

Antiviral therapy (other than entecavir or tenofovir) within 3 months of screening or treatment with interferon in the last 3 years (Group B and C only).

Use within the last 6 months of anticoagulants or systemically administered corticosteroids, immunomodulators, or immunosuppressants (Group B and C only).

Example 5: Synthesis of 5′ End Cap Monomer

embedded image

Preparation of (2): To a solution of 1 (15 g, 57.90 mmol) in DMF (150 mL) were added AcSK (11.24 g, 98.43 mmol) and TBAI (1.07 g, 2.89 mmol), and the mixture was stirred at 25° C. for 12 h. Upon completion as monitored by LCMS, the mixture was diluted with H₂O (10 mL) and extracted with EA (200 mL*3). The combined organic layers were washed with brine (200 mL*3), dried over anhydrous Na₂SO₄, filtered and concentrated under reduced pressure to give 2 (14.5 g, 96.52% yield, 98% purity) as a colorless oil. ESI-LCMS: 254.28 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=4.78-4.65 (m, 2H), 3.19 (d, J=14.1 Hz, 2H), 2.38 (s, 3H), 1.32 (t, J=6.7 Hz, 12H); ³¹P NMR (162 MHz, CDCl₃) δ=20.59.

Preparation of (3): To a solution of 2 (14.5 g, 57.02 mmol) in CH₃CN (50 mL) and MeOH (25 mL) was added NaOH (3 M, 28.51 mL), and the mixture was stirred at 25° C. for 12 h under Ar. Upon completion as monitored by TLC, the reaction mixture was concentrated under reduced pressure to remove CH₃CN and CH₃OH. The residue was diluted with water (50 mL) and adjust pH=7 by 6 M HCl, and the mixture was extracted with EA (50 mL*3). The combined organic layers were washed with brine (50 mL*3), dried over anhydrous Na₂SO₄, filtered and concentrated under reduced pressure to give 3 (12.1 g, crude) as a colorless oil.

Preparation of (4): To a solution of 3 (12.1 g, 57.01 mmol) in CH₃CN (25 mL) and MeOH (25 mL) was added A (14.77 g, 57.01 mmol) dropwise at 25° C., and the mixture was stirred at 25° C. under Ar for 12 h. Upon completion as monitored by LCMS, the reaction mixture was concentrated under reduced pressure to give 4 (19.5 g, 78.85% yield) as a colorless oil. ¹H NMR (400 MHz, CDCl₃) δ=4.80-4.66 (m, 4H), 2.93 (d, J=11.3 Hz, 4H), 1.31 (dd, J=3.9, 6.1 Hz, 24H); ³¹P NMR (162 MHz, CDCl₃) δ=22.18.

Preparation of (5): To a solution of 4 (19.5 g, 49.95 mmol) in MeOH (100 mL) and H₂O (100 mL) was added Oxone (61.41 g, 99.89 mmol) at 25° C. in portions, and the mixture was stirred at 25° C. for 12 h under Ar. Upon completion as monitored by LCMS, the reaction mixture was filtered, and the filtrate was concentrated under reduced pressure to remove MeOH. The residue was extracted with EA (50 mL*3). The combined organic layers were washed with brine (50 mL*3), dried over anhydrous Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The crude product was triturated with i-Pr₂O and n-Hexane (1:2, 100 mL) at 25° C. for 30 min to give 5 (15.6 g, 73.94% yield) as a white solid. ¹H NMR (400 MHz, CDCl₃) δ=4.92-4.76 (m, 4H), 4.09 (d, J=16.1 Hz, 4H), 1.37 (dd, J=3.5, 6.3 Hz, 24H); ³¹P NMR (162 MHz, CDCl₃) δ=10.17.

Preparation of (7): To a mixture of 5 (6.84 g, 16.20 mmol) in THF (20 mL) was added LiBr (937.67 mg, 10.80 mmol) until dissolved, followed by DIEA (1.40 g, 10.80 mmol, 1.88 mL) under argon at 15° C. The mixture was stirred at 15° C. for 15 min. 6 (4 g, 10.80 mmol) were added. The mixture was stirred at 15° C. for 3 h. Upon completion as monitored by LCMS, the reaction mixture was quenched by addition of H₂O (40 mL) and extracted with EA (40 mL*3). The combined organic layers were washed with brine (100 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash reverse-phase chromatography (120 g C-18 Column, Eluent of 0˜60% ACN/H₂O gradient @ 80 mL/min) to give 7 (5.7 g, 61.95% yield) as a colorless oil. ESI-LCMS: 611.2 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃); δ=9.26 (s, 1H), 7.50 (d, J=8.1 Hz, 1H), 7.01 (s, 2H), 5.95 (d, J=2.7 Hz, 1H), 5.80 (dd, J=2.1, 8.2 Hz, 1H), 4.89-4.72 (m, 2H), 4.66 (d, J=7.2 Hz, 1H), 4.09-4.04 (m, 1H), 3.77 (dd, J=2.7, 4.9 Hz, 1H), 3.62 (d, J=3.1 Hz, 1H), 3.58 (d, J=3.1 Hz, 1H), 3.52 (s, 3H), 1.36 (td, J=1.7, 6.1 Hz, 12H), 0.92 (s, 9H), 0.12 (s, 6H); ³¹P NMR (162 MHz, CDCl₃) δ=9.02

Preparation of (8): To a mixture of 7 (5.4 g, 8.84 mmol) in THF (80 mL) was added Pd/C (5.4 g, 10% purity) under N₂. The suspension was degassed under vacuum and purged with H₂several times. The mixture was stirred under H₂(15 psi) at 20° C. for 1 hr. Upon completion as monitored by LCMS, the reaction mixture was filtered, and the filtrate was concentrated to give 8 (5.12 g, 94.5% yield) as a white solid. ESI-LCMS: 613.3 [M+H]⁺; H NMR (400 MHz, CD₃CN) δ=9.31 (s, 1H), 7.37 (d, J=8.0 Hz, 1H), 5.80-5.69 (m, 2H), 4.87-4.75 (m, 2H), 4.11-4.00 (m, 1H), 3.93-3.85 (m, 1H), 3.80-3.74 (m, 1H), 3.66-3.60 (m, 1H), 3.57-3.52 (m, 1H), 3.49 (s, 3H), 3.46-3.38 (m, 1H), 2.35-2.24 (m, 1H), 2.16-2.03 (m, 1H), 1.89-1.80 (m, 1H), 1.37-1.34 (m, 12H), 0.90 (s, 9H), 0.09 (s, 6H); ³¹P NMR (162 MHz, CD₃CN) δ=9.41.

Preparation of (9): To a solution of 8 (4.4 g, 7.18 mmol) in THF (7.2 mL) was added TBAF (1 M, 7.18 mL), and the mixture was stirred at 20° C. for 1 hr. Upon completion as monitored by LCMS, the reaction mixture was diluted with H₂O (50 mL) and extracted with EA (50 mL*4). The combined organic layers were washed with brine (50 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0˜5%, MeOH/DCM gradient @ 40 mL/min) to give 9 (3.2 g, 88.50% yield) as a white solid. ESI-LCMS: 499.2 [M+H]⁺¹; ¹H NMR (400 MHz, CD₃CN) δ=9.21 (s, 1H), 7.36 (d, J=8.3 Hz, 1H), 5.81-5.72 (m, 2H), 4.88-4.74 (m, 2H), 3.99-3.87 (m, 2H), 3.84 (dd, J=1.9, 5.4 Hz, 1H), 3.66-3.47 (m, 7H), 2.98 (s, 1H), 2.44-2.15 (m, 2H), 1.36 (d, J=6.0 Hz, 12H); ³¹P NMR (162 MHz, CD₃CN) δ=9.48.

Preparation of (Example 5 monomer): To a mixture of 9 (3.4 g, 6.82 mmol, 1 eq) and 4A MS (3.4 g) in MeCN (50 mL) was added P1 (2.67 g, 8.87 mmol, 2.82 mL, 1.3 eq) at 0° C., followed by addition of 1H-imidazole-4,5-dicarbonitrile (886.05 mg, 7.50 mmol) at 0° C. The mixture was stirred at 20° C. for 2 h. Upon completion as monitored by LCMS, the reaction mixture was quenched by addition of saturated aq. NaHCO₃(50 mL) and diluted with DCM (100 mL). The organic layer was washed with saturated aq. NaHCO₃(50 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by prep-HPLC: column: YMC-Triart Prep C18 250*50 mm*10 um; mobile phase: [water (10 mM NH₄HCO₃)-ACN]; B %: 15% to give a impure product. The impure product was further purified by a flash silica gel column (0% to 5% i-PrOH in DCM with 0.5% TEA) to give Example 5 monomer (2.1 g, 43.18% yield) as a white solid. ESI-LCMS: 721.2 [M+Na]⁺; H NMR (400 MHz, CD₃CN) δ=9.29 (s, 1H), 7.45 (d, J=8.1 Hz, 1H), 5.81 (d, J=4.2 Hz, 1H), 5.65 (d, J=8.1 Hz, 1H), 4.79-4.67 (m, 2H), 4.26-4.05 (m, 2H), 4.00-3.94 (m, 1H), 3.89-3.63 (m, 6H), 3.53-3.33 (m, 5H), 2.77-2.61 (m, 2H), 2.31-2.21 (m, 1H), 2.16-2.07 (m, 1H), 1.33-1.28 (m, 12H), 1.22-1.16 (m, 1H), 1.22-1.16 (m, 11H); ³¹P NMR (162 MHz, CD₃CN) δ=149.89, 149.78, 10.07, 10.02.

Example 6. Synthesis of 5′ End Cap Monomer

embedded image

Preparation of (2): To a solution of 1 (5 g, 13.42 mmol) in DMF (50 mL) were added PPh₃(4.58 g, 17.45 mmol) and 2-hydroxyisoindoline-1,3-dione (2.85 g, 17.45 mmol), followed by a solution of DIAD (4.07 g, 20.13 mmol, 3.91 mL) in DMF (10 mL) dropwise at 15° C. The resulting solution was stirred at 15° C. for 18 hr. The reaction mixture was then diluted with DCM (50 mL), washed with H₂O (60 mL*3) and brine (30 mL), dried over Na₂SO₄, filtered and evaporated to give a residue. The residue was then triturated with EtOH (55 mL) for 30 min, and the collected white powder was washed with EtOH (10 mL*2) and dried to give 2 (12.2 g, 85.16% yield) as a white powder (the reaction was set up in two batches and combined) ESI-LCMS: 518.1 [M+H]⁺.

Preparation of (3): 2 (6 g, 11.59 mmol) was suspended in MeOH (50 mL), and then NH₂NH₂.H₂O (3.48 g, 34.74 mmol, 3.38 mL, 50% purity) was added dropwise at 20° C. The reaction mixture was stirred at 20° C. for 4 hr. Upon completion, the reaction mixture was diluted with EA (20 mL) and washed with NaHCO₃(10 mL*2) and brine (10 mL). The combined organic layers were then dried over Na₂SO₄, filtered and evaporated to give 3 (8.3 g, 92.5% yield) as a white powder. (The reaction was set up in two batches and combined). ESI-LCMS: 388.0 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.39 (br s, 1H), 7.72 (d, J=8.1 Hz, 1H), 6.24-6.09 (m, 2H), 5.80 (d, J=4.9 Hz, 1H), 5.67 (d, J=8.1 Hz, 1H), 4.26 (t, J=4.9 Hz, 1H), 4.03-3.89 (m, 1H), 3.87-3.66 (m, 3H), 3.33 (s, 3H), 0.88 (s, 9H), 0.09 (d, J=1.3 Hz, 6H)

Preparation of (4): To a solution of 3 (7 g, 18.06 mmol) and Py (1.43 g, 18.06 mmol, 1.46 mL) in DCM (130 mL) was added a solution of MsCl (2.48 g, 21.68 mmol, 1.68 mL) in DCM (50 mL) dropwise at −78° C. under N₂. The reaction mixture was allowed to warm to 15° C. in 30 min and stirred at 15° C. for 3 h. The reaction mixture was quenched by addition of ice-water (70 mL) at 0° C., and then extracted with DCM (50 mL*3). The combined organic layers were washed with saturated aq. NaHCO₃(50 mL) and brine (30 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 30 g SepaFlash® Silica Flash Column, Eluent of 0˜20% i-PrOH/DCM gradient @ 30 mL/min to give 4 (6.9 g, 77.94% yield) as a white solid. ESI-LCMS: 466.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.41 (br s, 1H), 10.15 (s, 1H), 7.69 (d, J=8.1 Hz, 1H), 5.80 (d, J=4.4 Hz, 1H), 5.65 (d, J=8.1 Hz, 1H), 4.24 (t, J=5.2 Hz, 1H), 4.16-3.98 (m, 3H), 3.87 (t, J=4.8 Hz, 1H), 3.00 (s, 3H), 2.07 (s, 3H), 0.88 (s, 9H), 0.10 (d, J=1.5 Hz, 6H)

Preparation of (5): To a solution of 4 (6.9 g, 14.82 mmol) in THF (70 mL) was added TBAF (1 M, 16.30 mL) at 15° C. The reaction mixture was stirred at 15° C. for 18 hr, and then evaporated to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 24 g SepaFlash® Silica Flash Column, Eluent of 0˜9% MeOH/Ethyl acetate gradient @ 30 mL/min) to give 5 (1.8 g, 50.8% yield) as a white solid. ESI-LCMS: 352.0 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.40 (s, 1H), 10.13 (s, 1H), 7.66 (d, J=8.1 Hz, 1H), 5.83 (d, J=4.9 Hz, 1H), 5.65 (dd, J=1.8, 8.1 Hz, 1H), 5.36 (d, J=6.2 Hz, 1H), 4.13-4.00 (m, 4H), 3.82 (t, J=5.1 Hz, 1H), 3.36 (s, 3H), 3.00 (s, 3H)

Preparation of (Example 6 monomer): To a mixture of 5 (3 g, 8.54 mmol) and DIEA (2.21 g, 17.08 mmol, 2.97 mL) in ACN (90 mL) was added P2 (3.03 g, 12.81 mmol) dropwise at 15° C. The reaction mixture was stirred at 15° C. for 5 h. Upon completion, the reaction mixture was diluted with EA (40 mL) and quenched with 5% NaHCO₃(20 mL). The organic layer was washed with brine (30 mL), dried over Na₂SO₄, filtered and evaporated to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 12 g SepaFlash® Silica Flash Column, Eluent of 0˜15% i-PrOH/(DCM with 2% TEA) gradient @ 20 mL/min) to Example 6 monomer (2.1 g, 43.93% yield) as a white solid. ESI-LCMS: 552.3 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=8.78 (br s, 1H), 7.57 (dd, J=4.6, 8.2 Hz, 1H), 5.97-5.80 (m, 1H), 5.67 (d, J=8.3 Hz, 1H), 4.46-4.11 (m, 4H), 3.95-3.58 (m, 5H), 3.44 (d, J=16.3 Hz, 3H), 3.02 (d, J=7.5 Hz, 3H), 2.73-2.59 (m, 2H), 1.23-1.15 (m, 12H); ³¹P NMR (162 MHz, CD₃CN) δ=150.30, 150.10

Example 7: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To the solution of 1 (5 g, 12.90 mmol) and TEA (1.57 g, 15.48 mmol, 2.16 mL) in DCM (50 mL) was added P-4 (2.24 g, 15.48 mmol, 1.67 mL) in DCM (10 mL) dropwise at 15° C. under N₂. The reaction mixture was stirred at 15° C. for 3 h. Upon completion as monitored by LCMS and TLC (PE:EtOAc=0:1), the reaction mixture was concentrated to dryness, diluted with H₂O (20 mL), and extracted with EA (50 mL*3). The combined organic layers were washed with brine (30 mL*3), dried over anhydrous Na₂SO₄, filtered, and the filtrate was concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0˜95% Ethyl acetate/Petroleum ether gradient @ 60 mL/min) to give 2 (5.3 g, 71.3% yield) as a white solid. ESI-LCMS: 496.1 [M+H]⁺; H NMR (400 MHz, CDCl₃) δ=0.10 (d, J=4.02 Hz, 6H) 0.91 (s, 9H) 3.42-3.54 (m, 3H) 3.65-3.70 (m, 1H) 3.76-3.89 (m, 6H) 4.00 (dd, J=10.92, 2.89 Hz, 1H) 4.08-4.13 (m, 1H) 4.15-4.23 (m, 2H) 5.73 (dd, J=8.28, 2.01 Hz, 1H) 5.84 (d, J=2.76 Hz, 1H) 6.86 (d, J=15.81 Hz, 1H) 7.72 (d, J=8.03 Hz, 1H) 9.10 (s, 1H); ³¹P NMR (162 MHz, CD₃CN) δ=9.65

Preparation of (3): To a solution of 2 (8.3 g, 16.75 mmol) in THF (50 mL) were added TBAF (1 M, 16.75 mL) and CH₃COOH (1.01 g, 16.75 mmol, 957.95 uL). The mixture was stirred at 20° C. for 12 hr. Upon completion as monitored by LCMS, the reaction mixture was concentrated under reduced pressure. The residue was purified by column chromatography (SiO₂, PE:EA=0˜100%; MeOH/EA=0˜10%) to give 3 (5 g, 77.51% yield) as a white solid. ESI-LCMS: 382.1 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=3.35 (s, 3H) 3.65 (br d, J=2.76 Hz, 3H) 3.68 (d, J=2.76 Hz, 3H) 3.77 (t, J=5.08 Hz, 1H) 3.84-4.10 (m, 4H) 5.33 (br d, J=5.52 Hz, 1H) 5.62 (d, J=7.77 Hz, 1H) 5.83 (d, J=4.94 Hz, 1H) 7.69 (d, J=7.71 Hz, 1H) 9.08 (d, J=16.81 Hz, 1H) 11.39 (br s, 1H); ³¹P NMR (162 MHz, CD₃CN) δ=15.41

Preparation of (Example 7 monomer): To a solution of 3 (2 g, 5.25 mmol) and DIPEA (2.03 g, 15.74 mmol, 2.74 mL, 3 eq) in MeCN (21 mL) and pyridine (7 mL) was added P2 (1.86 g, 7.87 mmol) dropwise at 20° C., and the mixture was stirred at 20° C. for 3 hr. Upon completion as monitored by LCMS, the reaction mixture was diluted with water (20 mL) and extracted with EA (50 mL). The combined organic layers were washed with brine (30 mL), dried over anhydrous Na₂SO₄, filtered, and the filtrate was concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 25 g SepaFlash® Silica Flash Column, Eluent of 0˜45% (Ethyl acetate:EtOH=4:1)/Petroleum ether gradient) to give Example 7 monomer (1.2 g, 38.2% yield) as a white solid. ESI-LCMS: 604.1 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=1.12-1.24 (m, 12H) 2.61-2.77 (m, 2H) 3.43 (d, J=17.64 Hz, 3H) 3.59-3.69 (m, 2H) 3.71-3.78 (m, 6H) 3.79-4.14 (m, 5H) 4.16-4.28 (m, 1H) 4.29-4.42 (m, 1H) 5.59-5.72 (m, 1H) 5.89 (t, J=4.53 Hz, 1H) 7.48 (br d, J=12.76 Hz, 1H) 7.62-7.74 (m, 1H) 9.26 (br s, 1H); ³¹P NMR (162 MHz, CD₃CN) δ=150.57, 149.96, 9.87

Example 8: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (30 g, 101.07 mmol, 87% purity) in CH₃CN (1.2 L) and Py (60 mL) were added I₂(33.35 g, 131.40 mmol, 26.47 mL) and PPh₃(37.11 g, 141.50 mmol) in one portion at 10° C. The reaction was stirred at 25° C. for 48 h. Upon completion, the mixture was diluted with saturated aq.Na₂S₂O₃(300 mL) and saturated aq.NaHCO₃(300 mL), concentrated to remove CH₃CN, and extracted with EtOAc (300 mL*3). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 330 g SepaFlash® Silica Flash Column, Eluent of 0˜60% Methanol/Dichloromethane gradient @ 100 mL/min) to give 2 (28.2 g, 72% yield) as a brown solid. ESI-LCMS: 369.1 [M+H]⁺; H NMR (400 MHz, DMSO-d₆) δ=11.43 (s, 1H), 7.68 (d, J=8.1 Hz, 1H), 5.86 (d, J=5.5 Hz, 1H), 5.69 (d, J=8.1 Hz, 1H), 5.46 (d, J=6.0 Hz, 1H), 4.08-3.96 (m, 2H), 3.90-3.81 (m, 1H), 3.60-3.51 (m, 1H), 3.40 (dd, J=6.9, 10.6 Hz, 1H), 3.34 (s, 3H).

Preparation of (3): To the solution of 2 (12 g, 32.6 mmol) in DCM (150 mL) were added AgNO₃(11.07 g, 65.20 mmol), 2,4,6-trimethylpyridine (11.85 g, 97.79 mmol, 12.92 mL), and DMTCl (22.09 g, 65.20 mmol) at 10° C., and the reaction mixture was stirred at 10° C. for 16 hr. Upon completion, the mixture was filtered and the filtrate was concentrated under reduced pressure. The residue was purified by flash silica gel chromatography (ISCO®; 120 g SepaFlash® Silica Flash Column, Eluent of 0˜50% Ethyl acetate/Petroleum ethergradient @ 60 mL/min) to give 3 (17 g, 70.78% yield) as a yellow solid. ESI-LCMS: 693.1 [M+Na]¹; H NMR (400 MHz, DMSO-d₆) δ=11.46 (s, 1H), 7.60 (d, J=8.4 Hz, 1H), 7.49 (d, J=7.2 Hz, 2H), 7.40-7.30 (m, 6H), 7.29-7.23 (m, 1H), 6.93 (d, J=8.8 Hz, 4H), 5.97 (d, J=6.0 Hz, 1H), 5.69 (d, J=8.0 Hz, 1H), 4.05-4.02 (m, 1H), 3.75 (d, J=1.2 Hz, 6H), 3.57 (t, J=5.6 Hz, 1H), 3.27 (s, 4H), 3.06 (t, J=10.4 Hz, 1H), 2.98-2.89 (m, 1H).

Preparation of (4): To a solution of 3 (17 g, 25.35 mmol) in DMF (200 mL) was added AcSK (11.58 g, 101.42 mmol) at 25° C., and the reaction was stirred at 60° C. for 2 hr. The mixture was diluted with H₂O (600 mL) and extracted with EtOAc (300 mL*4). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered, and concentrated under reduced pressure to give 4 (15.6 g, crude) as a brown solid, which was used directly without further purification. ESI-LCMS: 641.3 [M+H]⁺.

Preparation of (5): To a solution of 4 (15.6 g, 25.21 mmol) in CH₃CN (200 mL) were added DTT (11.67 g, 75.64 mmol, 11.22 mL) and LiOH.H₂O (1.06 g, 25.21 mmol) at 10° C. under Ar. The reaction was stirred at 10° C. for 1 hr. The mixture was concentrated under reduced pressure to remove CH₃CN, and the residue was diluted with H₂O (400 mL) and extracted with EtOAc (200 mL*3). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 220 g SepaFlash® Silica Flash Column, Eluent of 0˜60% Ethyl acetate/Petroleum ether gradient @ 100 mL/min) to give 5 (8.6 g, 56.78% yield) as a white solid. ESI-LCMS: 599.3 [M+Na]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=8.79 (s, 1H), 7.61 (d, J=8.0 Hz, 1H), 7.56-7.46 (m, 2H), 7.45-7.37 (m, 4H), 7.36-7.27 (m, 3H), 6.85 (dd, J=2.8, 8.8 Hz, 4H), 5.85 (d, J=1.3 Hz, 1H), 5.68 (dd, J=2.0, 8.2 Hz, 1H), 4.33-4.29 (m, 1H), 3.91 (dd, J=4.8, 8.2 Hz, 1H), 3.81 (d, J=1.6 Hz, 6H), 3.33 (s, 3H), 2.85-2.80 (m, 1H), 2.67-2.55 (m, 2H), 1.11 (t, J=8.8 Hz, 1H).

Preparation of (Example 8 monomer): To a solution of 5 (6 g, 10.40 mmol) in DCM (120 mL) were added P1 (4.08 g, 13.53 mmol, 4.30 mL) and DCI (1.35 g, 11.45 mmol) in one portion at 10° C. under Ar. The reaction was stirred at 10° C. for 2 hr. The reaction mixture was diluted with saturated aq.NaHCO₃(50 mL) and extracted with DCM (20 mL*3). The combined organic layers were washed with brine (30 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by prep-HPLC (column: YMC-Triart Prep C18 250*50 mm*10 um; mobile phase: [water (10 mM NH₄HCO₃)-ACN]; B %: 35%-81%, 20 min) to give Example 8 monomer (3.54 g, 43.36% yield) as a yellow solid. ESI-LCMS: 776.4 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=7.65-7.38 (m, 7H), 7.37-7.22 (m, 3H), 6.90 (d, J=8.4 Hz, 4H), 5.92 (s, 1H), 5.66 (t, J=8.2 Hz, 1H), 4.13 (d, J=4.0 Hz, 1H), 4.00-3.88 (m, 1H), 3.87-3.59 (m, 10H), 3.33 (d, J=5.8 Hz, 3H), 3.12-2.94 (m, 1H), 2.78-2.60 (m, 3H), 2.55-2.48 (m, 1H), 1.36-0.98 (m, 12H); ³¹P NMR (162 MHz, DMSO-d₆) δ=162.69.

Example 9: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (22.6 g, 45.23 mmol) in DCM (500 mL) and H₂O (125 mL) were added TEMPO (6.40 g, 40.71 mmol) and DIB (29.14 g, 90.47 mmol) at 0° C. The mixture was stirred at 20° C. for 20 h. Upon completion as monitored by LCMS, saturated aq. NaHCO₃was added to the mixture to adjust pH>8. The mixture was diluted with H₂O (200 mL) and washed with DCM (100 mL*3). The aqueous layer was collected, adjusted to pH<5 by HCl (4 M), and extracted with DCM (200 mL*3). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered, and concentrated under reduced pressure to give 2 (17.5 g, 68.55% yield) as a yellow solid. ESI-LCMS: 514.2 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.27 (s, 1H), 8.86 (s, 1H), 8.78 (s, 1H), 8.06 (d, J=7.5 Hz, 2H), 7.68-7.62 (m, 1H), 7.59-7.52 (m, 2H), 6.28 (d, J=6.8 Hz, 1H), 4.82-4.76 (m, 1H), 4.54 (dd, J=4.1, 6.7 Hz, 1H), 4.48 (d, J=1.8 Hz, 1H), 3.32 (s, 3H), 0.94 (s, 9H), 0.18 (d, J=4.8 Hz, 6H).

Preparation of (3): To a solution of 2 (9.3 g, 18.11 mmol) in MeOH (20 mL) was added SOCl₂(3.23 g, 27.16 mmol, 1.97 mL) dropwise at 0° C. The mixture was stirred at 20° C. for 0.5 hr. Upon completion as monitored by LCMS, the reaction mixture was quenched by addition of saturated aq. NaHCO₃(80 mL) and concentrated under reduced pressure to remove MeOH. The aqueous layer was extracted with DCM (80 mL*3). The combined organic layers were washed with brine (200 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 120 g SepaFlash® Silica Flash Column, Eluent of 0˜5%, MeOH/DCM gradient @ 85 mL/min) to give 3 (5.8 g, 60% yield) as a yellow solid. ESI-LCMS: 528.3 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.28 (s, 1H), 8.79 (d, J=7.3 Hz, 2H), 8.06 (d, J=7.5 Hz, 2H), 7.68-7.62 (m, 1H), 7.60-7.53 (m, 2H), 6.28 (d, J=6.6 Hz, 1H), 4.87 (dd, J=2.4, 4.0 Hz, 1H), 4.61 (dd, J=4.3, 6.5 Hz, 1H), 4.57 (d, J=2.2 Hz, 1H), 3.75 (s, 3H), 3.32 (s, 3H), 0.94 (s, 9H), 0.17 (d, J=2.2 Hz, 6H).

Preparation of (4): To a mixture of 3 (5.7 g, 10.80 mmol) in CD₃OD (120 mL) was added NaBD₄(1.63 g, 43.21 mmol) in portions at 0° C., and the mixture was stirred at 20° C. for 1 hr. Upon completion as monitored by LCMS, the reaction mixture was neutralized by AcOH (˜10 mL) and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0-5%, MeOH/DCM gradient @ 40 mL/min) to give 4 (4.15 g, 7.61 mmol, 70.45% yield) as a yellow solid. ESI-LCMS: 502.2 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.23 (s, 1H), 8.76 (s, 2H), 8.04 (d, J=7.3 Hz, 2H), 7.69-7.62 (m, 1H), 7.60-7.52 (m, 2H), 6.14 (d, J=6.0 Hz, 1H), 5.18 (s, 1H), 4.60-4.51 (m, 2H), 3.98 (d, J=3.0 Hz, 1H), 3.32 (s, 3H), 0.92 (s, 9H), 0.13 (d, J=1.5 Hz, 6H).

Preparation of (5): To a solution of 4 (4.85 g, 9.67 mmol) in pyridine (50 mL) was added DMTrCl (5.90 g, 17.40 mmol) at 25° C. and the mixture was stirred for 2 hr. Upon completion as monitored by LCMS, the reaction mixture was concentrated under reduced pressure to remove pyridine. The residue was diluted with EtOAc (150 mL) and washed with H₂O (50 mL*3), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0˜70%, EA/PE gradient @ 60 mL/min) to give 5 (6.6 g, 84.06% yield) as a yellow solid. ESI-LCMS: 804.3[M+H]⁺, ¹H NMR (400 MHz, DMSO-d₆) δ=11.22 (s, 1H), 8.68 (d, J=11.0 Hz, 2H), 8.03 (d, J=7.3 Hz, 2H), 7.68-7.60 (m, 1H), 7.58-7.49 (m, 2H), 7.37-7.30 (m, 2H), 7.27-7.16 (m, 7H), 6.88-6.79 (m, 4H), 6.17 (d, J=4.2 Hz, 1H), 4.72 (t, J=5.0 Hz, 1H), 4.60 (t, J=4.5 Hz, 1H), 4.03-3.98 (m, 1H), 3.71 (s, 6H), 0.83 (s, 9H), 0.12-0.03 (m, 6H).

Preparation of (6): To a solution of 5 (6.6 g, 8.21 mmol) in THF (16 mL) was added TBAF (1 M, 8.21 mL), and the mixture was stirred at 20° C. for 2 hr. Upon completion as monitored by LCMS, the reaction mixture was diluted with EA (150 mL) and washed with H₂O (50 mL*3). The organic layer was washed with brine (150 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 10-100%, EA/PE gradient @ 30 mL/min) to give 6 (5.4 g, 94.4% yield) as a yellow solid. ESI-LCMS: 690.3 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.24 (s, 1H), 8.69 (s, 1H), 8.62 (s, 1H), 8.05 (d, J=7.3 Hz, 2H), 7.69-7.62 (m, 1H), 7.60-7.52 (m, 2H), 7.40-7.33 (m, 2H), 7.30-7.18 (m, 7H), 6.84 (dd, J=5.9, 8.9 Hz, 4H), 6.19 (d, J=4.8 Hz, 1H), 5.36 (d, J=6.0 Hz, 1H), 4.59-4.52 (m, 1H), 4.48 (q, J=5.1 Hz, 1H), 4.11 (d, J=4.8 Hz, 1H), 3.72 (d, J=1.0 Hz, 6H), 3.40 (s, 3H).

Preparation of (Example 9 monomer): To a solution of 6 (8.0 g, 11.60 mmol) in MeCN (150 mL) was added P-1 (4.54 g, 15.08 mmol, 4.79 mL) at 0° C., followed by DCI (1.51 g, 12.76 mmol) in one portion. The mixture was warmed to 20° C. and stirred for 2 h. Upon completion as monitored by LCMS, the reaction mixture was quenched by addition of saturated aq. NaHCO₃(50 mL) and diluted with DCM (250 mL). The organic layer was washed with saturated aq.NaHCO₃(50 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure. The residue was purified by a flash silica gel column (0% to 60% EA in PE contain 0.5% TEA) to give Example 9 monomer (5.75 g, 55.37% yield, 99.4% purity) as a white solid. ESI-LCMS: 890.4 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=9.55 (s, 1H), 8.63-8.51 (m, 1H), 8.34-8.24 (m, 1H), 7.98 (br d, J=7.5 Hz, 2H), 7.65-7.55 (m, 1H), 7.53-7.46 (m, 2H), 7.44-7.37 (m, 2H), 7.32-7.17 (m, 7H), 6.84-6.77 (m, 4H), 6.14 (d, J=4.3 Hz, 1H), 4.84-4.73 (m, 1H), 4.72-4.65 (m, 1H), 4.34-4.27 (m, 1H), 3.91-3.61 (m, 9H), 3.50-3.43 (m, 3H), 2.72-2.61 (m, 1H), 2.50 (t, J=6.0 Hz, 1H), 1.21-1.15 (m, 10H), 1.09 (d, J=6.8 Hz, 2H); ³¹P NMR (162 MHz, CD₃CN) δ=150.01, 149.65

Example 10: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (10 g, 27.22 mmol) in CH₃CN (200 mL) and H₂O (50 mL) were added TEMPO (3.85 g, 24.50 mmol) and DIB (17.54 g, 54.44 mmol). The mixture was stirred at 25° C. for 12 h. Upon completion as monitored by LCMS, the reaction mixture was concentrated under reduced pressure to give a residue. The residue was triturated with EtOAc (600 mL) for 30 min. The resulting suspension was filtered and the collected solid was washed with EtOAc (300 mL*2) to give 2 (20.09 g, 91.5% yield) as a white solid. ESI-LCMS: 382.0 [M+H]⁺.

Preparation of (3): To a solution of 2 (6 g, 15.73 mmol) in MeOH (100 mL) was added SOCl₂(2.81 g, 23.60 mmol, 1.71 mL) dropwise at 0° C. The mixture was stirred at 25° C. for 12 h. Upon completion as monitored by LCMS, the reaction mixture was quenched by addition of NaHCO₃(4 g) and stirred at 25° C. for 30 min. The reaction mixture was filtered and the filtrate was concentrated under reduced pressure to give 3 (18.8 g, 95.6% yield) as a white solid. The crude product was used for the next step without further purification. (The reaction was set up in parallel 3 batches and combined). ESI-LCMS: 396.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=12.26-11.57 (m, 2H), 8.42-8.06 (m, 1H), 6.14-5.68 (m, 2H), 4.56 (s, 2H), 4.33 (dd, J=4.0, 7.3 Hz, 1H), 3.77 (m, 3H), 3.30 (s, 3H), 2.81-2.69 (m, 1H), 1.11 (s, 6H)

Preparation of (4 & 5): To a mixture of 3 (10.1 g, 25.55 mmol) in CD₃OD (120 mL) was added NaBD₄(3.29 g, 86.86 mmol, 3.4 eq) in portions at 0° C. The mixture was stirred at 25° C. for 1 h. Upon completion as monitored by LCMS, the reaction mixture was neutralized with AcOH (˜15 mL) and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 120 g SepaFlash® Silica Flash Column, Eluent of 0˜7.4%, MeOH/DCM gradient @ 80 mL/min) to give 4 (2.98 g, 6.88 mmol, 27% yield) as a yellow solid. ESI-LCMS: 370.1[M+H]⁺ and 5 (10.9 g, crude) as a yellow solid. ESI-LCMS: 300.1[M+H]⁺; ¹H NMR (400 MHz, CD₃OD) δ=7.85 (s, 1H), 5.87 (d, J=6.0 Hz, 1H), 4.46-4.39 (m, 1H), 4.34 (t, J=5.4 Hz, 1H), 4.08 (d, J=3.1 Hz, 1H), 3.49-3.38 (m, 4H)

Preparation of 6: To a solution of 4 (1.9 g, 4.58 mmol, 85.7% purity) in pyridine (19 mL) was added DMTrCl (2.02 g, 5.96 mmol). The mixture was stirred at 25° C. for 2 h under N₂. Upon completion as monitored by LCMS, the reaction mixture was quenched by MeOH (10 mL) and concentrated under reduce pressure to give a residue. The residue was diluted with H₂O (10 mL*3) and extracted with EA (20 mL*3). The combined organic layers were washed with brine (20 mL), dried over anhydrous Na₂SO₄, filtered and concentrated under reduce pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 25 g SepaFlash® Silica Flash Column, Eluent of 0˜77%, PE: (EA with 10% EtOH): 1% TEA@ 35 mL/min) to give 6 (2.6 g, 81.71% yield, 96.71% purity) as a white foam. ESI-LCMS: 672.2 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=12.02 (s, 1H), 7.96 (s, 1H), 7.83 (s, 1H), 7.51 (d, J=7.4 Hz, 2H), 7.37 (d, J=8.6 Hz, 4H), 7.25-7.17 (m, 2H), 6.80 (t, J=8.4 Hz, 4H), 5.88 (d, J=6.3 Hz, 1H), 4.69 (t, J=5.7 Hz, 1H), 4.64 (s, 1H), 4.54 (s, 1H), 4.19 (d, J=2.9 Hz, 1H), 3.77 (d, J=4.5 Hz, 6H), 3.60-3.38 (m, 3H), 2.81 (s, 1H), 1.81 (td, J=6.9, 13.7 Hz, 1H), 0.97 (d, J=6.8 Hz, 3H), 0.80 (d, J=6.9 Hz, 3H)

Preparation of Example 10 monomer: To a solution of 6 (8.4 g, 12.5 mmol) in MeCN (80 mL) was added P-1 (4.9 g, 16.26 mmol, 5.16 mL) at 0° C., followed by addition of DCI (1.624 g, 13.76 mmol) in one portion at 0° C. under Ar. The mixture was stirred at 25° C. for 2 h. Upon completion as monitored by LCMS, the reaction mixture was quenched with saturated aq.NaHCO₃(20 mL) and extracted with DCM (50 mL*2). The combined organic layers were dried over anhydrous Na₂SO₄, filtered and concentrated under reduce pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0˜52% PE:EA (10% EtOH): 5% TEA, @ 80 mL/min) to give Example 10 monomer (3.4 g, 72.1% yield) as a white foam. ESI-LCMS: 872.4 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=12.46-11.07 (m, 1H), 9.29 (s, 1H), 7.84 (d, J=14.6 Hz, 1H), 7.42 (t, J=6.9 Hz, 2H), 7.34-7.17 (m, 7H), 6.85-6.77 (m, 4H), 5.95-5.77 (m, 1H), 4.56-4.40 (m, 2H), 4.24 (dd, J=4.0, 13.3 Hz, 1H), 3.72 (d, J=2.0 Hz, 7H), 3.66-3.53 (m, 3H), 3.42 (d, J=11.8 Hz, 3H), 2.69-2.61 (m, 1H), 2.60-2.42 (m, 2H), 1.16-1.00 (m, 18H); ³¹P NMR (162 MHz, CD₃CN) δ=149.975, 149.9

Example 11: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (40 g, 58.16 mmol) in DMF (60 mL) were added imidazole (11.88 g, 174.48 mmol), NaI (13.08 g, 87.24 mmol), and TB SCI (17.52 g, 116.32 mmol) at 20° C. in one portion. The reaction mixture was stirred at 20° C. for 12 h. Upon completion, the mixture was diluted with EA (200 mL). The organic layer was washed with brine/water (80 mL/80 mL*4), dried over Na₂SO₄, filtered and evaporated to give 2 (50.8 g, crude) as yellow solid. ESI-LCMS: 802.3 [M+H]⁺

Preparation of (3): To a solution of 2 (8.4 g, 10.47 mmol) in DCM (120 mL) were added Et₃SiH (3.06 g, 26.3 mmol, 4.2 mL) and TFA (1.29 g, 0.84 mL) dropwise at 0° C. The reaction mixture was stirred at 20° C. for 2 h. The reaction mixture was washed with saturated aq.NaHCO₃(15 mL) and brine (80 mL). The organic layer was dried over Na₂SO₄, filtered and evaporated. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0˜83% EA/PE gradient @ 80 mL/min) to give 3 (2.92 g, 55.8% yield) as a white solid. ESI-LCMS: 500.2 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=8.79 (s, 1H), 8.14 (s, 1H), 8.02 (d, J=7.6 Hz, 2H), 7.64-7.58 (m, 1H), 7.56-7.49 (m, 2H), 5.98-5.93 (m, 1H), 4.63-4.56 (m, 2H), 4.23 (s, 1H), 3.98 (dd, J=1.5, 13.1 Hz, 1H), 3.75 (dd, J=1.5, 13.1 Hz, 1H), 3.28 (s, 3H), 2.06-1.99 (m, 1H), 1.00-0.90 (m, 9H), 0.15 (d, J=7.0 Hz, 6H).

Preparation of (4): 3 (6 g, 12.01 mmol) and tert-butyl N-methylsulfonylcarbamate (3.52 g, 18.01 mmol) were co-evaporated with toluene (50 mL), dissolved in dry THF (100 mL), and cooled to 0° C. PPh₃(9.45 g, 36.03 mmol) was then added, followed by dropwise addition of DIAD (7.28 g, 36.03 mmol, 7.00 mL) in dry THF (30 mL). The reaction mixture was stirred at 20° C. for 18 h. Upon completion, the reaction mixture was then diluted with DCM (100 mL) and washed with water (70 mL) and brine (70 mL), dried over Na₂SO₄, filtered and evaporated to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0-100% Ethyl acetate/Petroleum ether gradient @ 60 mL/min) followed by reverse-phase HPLC (0.1% NH₃.H₂O condition, eluent at 74%) to give 4 (2.88 g, 25% yield) as a white solid. ESI-LCMS: 677.1 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=9.24 (s, 1H), 8.84 (s, 1H), 8.36 (s, 1H), 8.05 (br d, J=7.3 Hz, 2H), 7.66-7.42 (m, 4H), 6.16 (d, J=5.0 Hz, 1H), 4.52 (br t, J=4.5 Hz, 1H), 4.25-4.10 (m, 1H), 3.97 (br dd, J=8.0, 14.8 Hz, 1H), 3.48 (s, 3H), 3.27 (s, 3H), 1.54 (s, 9H), 0.95 (s, 9H), 0.14 (d, J=0.8 Hz, 6H).

Preparation of (5): To a solution of 4 (2.8 g, 4.14 mmol) in THF (20 mL) was added TBAF (4 M, 1.03 mL) and the mixture was stirred at 20° C. for 12 h. The reaction mixture was then evaporated. The residue was purified by flash silica gel chromatography (ISCO®; 12 g SepaFlash® Silica Flash Column, Eluent of 0˜6% MeOH/ethyl acetate gradient @ 20 mL/min) to give 5 (2.1 g, 83.92% yield) as a white solid. ESI-LCMS: 563.1[M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=8.85-8.77 (m, 1H), 8.38 (s, 1H), 8.11-7.99 (m, 2H), 7.64-7.50 (m, 4H), 6.19 (d, J=2.8 Hz, 1H), 4.36-4.33 (m, 1H), 4.29 (br d, J=4.3 Hz, 1H), 4.22-4.02 (m, 2H), 3.65-3.59 (m, 3H), 3.28 (s, 3H), 1.54 (s, 9H).

Preparation of (6): To a solution of 5 (2.1 g, 3.73 mmol) in DCM (20 mL) was added TFA (7.70 g, 67.53 mmol, 5 mL) at 0° C. The reaction mixture was stirred at 20° C. for 24 h. Upon completion, the reaction was quenched with saturated aq. NaHCO₃to reach pH 7. The organic layer was dried over Na₂SO₄, filtered, and evaporated at low pressure. The residue was purified by flash silica gel chromatography (ISCO®; 12 g SepaFlash® Silica Flash Column, Eluent of 0˜7% DCM/MeOH gradient @ 20 mL/min) to give 1.6 g (impure, 75% LCMS purity), followed by prep-HPLC [FA condition, column: Boston Uni C18 40*150*5 um; mobile phase: [water (0.225% FA)-ACN]; B %: 8%-38%, 7.7 min.] to give 6 (1.04 g, 63.7% yield) as a white solid. ESI-LCMS: 485.0 [M+Na]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.27-11.21 (m, 1H), 8.77 (s, 1H), 8.74 (s, 1H), 8.05 (d, J=7.3 Hz, 2H), 7.68-7.62 (m, 1H), 7.59-7.53 (m, 2H), 7.39 (t, J=6.3 Hz, 1H), 6.16 (d, J=6.0 Hz, 1H), 5.48 (d, J=5.5 Hz, 1H), 4.55 (t, J=5.5 Hz, 1H), 4.43-4.37 (m, 1H), 4.08-4.02 (m, 1H), 3.41-3.36 (m, 1H), 3.35 (s, 3H), 3.31-3.22 (m, 1H), 2.91 (s, 3H).

Preparation of (Example 11 monomer): To a solution of 6 (1 g, 2.16 mmol) in DCM (30 mL) was added P1 (977.58 mg, 3.24 mmol, 1.03 mL), followed by DCI (306.43 mg, 2.59 mmol) at 0° C. in one portion under Ar atmosphere. The mixture was degassed and purged with Ar for 3 times, warmed to 20° C., and stirred for 2 hr under Ar atmosphere. Upon completion as monitored by LCMS and TLC (PE:EtOAc=4:1), the reaction mixture was diluted with sat.aq. NaHCO₃(30 mL) and extracted with DCM (50 mL*2). The combined organic layers were dried over anhydrous Na₂SO₄, filtered, and the filtrate was concentrated under reduced pressure to give a residue. The crude product was purified by reversed-phase HPLC (40 g C18 column: neutral condition, Eluent of 0˜57% of 0.3% NH₄HCO₃in H₂O/CH₃CN ether gradient @ 35 mL/min) to give Example 11 monomer (0.49 g, 33.7% yield) as a white solid. ESI-LCMS: 663.1[M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=1.19-1.29 (m, 12H) 2.71 (q, J=5.77 Hz, 2H) 2.94 (d, J=6.27 Hz, 3H) 3.35 (d, J=15.56 Hz, 3H) 3.40-3.52 (m, 2H) 3.61-3.97 (m, 4H) 4.23-4.45 (m, 1H) 4.55-4.74 (m, 2H) 6.02 (dd, J=10.67, 6.40 Hz, 1H) 7.25 (br s, 1H) 7.47-7.57 (m, 2H) 7.59-7.68 (m, 1H) 8.01 (d, J=7.78 Hz, 2H) 8.28 (s, 1H) 8.66 (s, 1H) 9.69 (br s, 1H); ³¹P NMR (162 MHz, CD₃CN) δ=150.92, 149.78.

Example 12. Synthesis of 5′-Stabilized End Cap Modified Oligonucleotides

This example provides an exemplary method for synthesizing the siNAs comprising a 5′-stabilized end caps disclosed herein. The 5′-stabilized end cap and/or deuterated phosphoramidites were dissolved in anhydrous acetonitrile and oligonucleotide synthesis was performed on a Expedite 8909 Synthesizer using standard phosphoramidite chemistry. An extended coupling (12 minutes) of 0.12 M solution of phosphoramidite in anhydrous CH₃CN in the presence of Benzyl-thio-tetrazole (BTT) activator to a solid bound oligonucleotide followed by standard capping, oxidation and sulfurization produced modified oligonucleotides. The 0.02 M I2, THF:Pyridine; Water 7:2:1 was used as an oxidizing agent, while DDTT (dimethylamino-methylidene)amino)-3H-1,2,4-dithiazaoline-3-thione was used as the sulfur-transfer agent for the synthesis of oligoribonucleotide with a phosphorothioate backbone. The stepwise coupling efficiency of all modified phosphoramidites was achieved around 98%. After synthesis the solid support was heated with aqueous ammonia (28%) solution at 45° C. for 16 h or 0.05 M K₂CO₃in methanol was used to deprotect the base labile protecting groups. The crude oligonucleotides were precipitated with isopropanol and centrifuged (Eppendorf 5810R, 3000 g, 4° C., 15 min) to obtain a pellet. The crude product was then purified using ion exchange chromatography (TSK gel column, 20 mM NaH₂PO₄, 10% CH₃CN, 1 M NaBr, gradient 20-60% B over 20 column volumes) and fractions were analyzed by ion change chromatography on an HPLC. Pure fractions were pooled and desalted by Sephadex G-25 column and evaporated to dryness. The purity and molecular weight were determined by HPLC analysis and ESI-MS analysis. Single strand RNA oligonucleotides (sense and antisense strand) were annealed (1:1 by molar equivalents) at 90° C. for 3 min followed by RT 40 min) to produce the duplexes.

Example 13. siNA Activity Assays

This example provides exemplary methods for testing the activity of the siNAs disclosed herein.

In Vitro Assay:

Homo sapiens HepG2.2.15 cells were cultured in Dulbecco's Modified Eagle's Medium (DMEM) (ATCC 30-2002) supplemented to also contain 10% fetal calf serum (FCS). Cells were incubated at 37° C. in an atmosphere with 5% CO2 in a humidified incubator. For transfection of HepG2.2.15 cells with HBV targeting siRNAs, cells were seeded at a density of 15000 cells/well in 96-well regular tissue culture plates. Transfection of cells was carried out using RNAiMAX (Invitrogen/Life Technologies) according to the manufacturer's instructions. Dose-response experiments were done with oligo concentrations of 40, 20, 10, 5, 2.5, 1.25, 0.625, 0.3125, 0.15625 and 0.07813 nM. For each HBV targeting siRNA treatment (e.g., ds-siRNA, as identified by the ds-siNA ID in Table 6), four wells were transfected in parallel, and individual data points were collected from each well. After 24 h of incubation with siRNA, media was removed, and cells were lysed and analyzed with a QuantiGene2.0 branched DNA (bDNA) probe set specific for HBV genotype D (also called Hepatitis B virus subtype ayw, complete genome of 3182 base-pairs) as present in cell line HepG2.2.15.

Unconjugated siRNA 1) with or without a phosphorylation blocker; and 2) with or without end caps (e.g., 5′-stabilized end cap) are transfected into in vitro disease models or in vitro toxicity models. After transfection, target reduction and/or cell viability is measured and compared after a period of incubation. For HBV, exemplary disease cell models include, but are not limited to, HepG2.2.15, HepG2.117 or live HBV infected HepG2-NTCP or Primary Human Hepatocytes.

In Vivo Assay:

GalNAc conjugated siRNA 1) with or without phosphorylation blocker; and 2) with or without 5′-end caps are dosed subcutaneously or intravenously in animal disease models. The target knockdown magnitude and duration is measured from serum or liver samples and compared to each other and/or control animals (e.g., non-treated diseased animals). In some instances, the toxicity of the siRNAs is compared through routine Clinpath or Histopath assays. For HBV, exemplary animal efficacy models include, but are not limited to, AAV-HBV mouse model, HBV transgenic mouse model, PXB or FRG mouse models.

Example 14. ds-siNA Testing in AAV-HBV Mouse Model

In this example, the efficacy of ds-siNAs in treating HBV in an adeno-associated virus (AAV)-HBV mouse model was evaluated. AAV-HBV mice were subcutaneously injected with a single dose of (a) 5 mL/kg of vehicle; or (b) 5 mg/kg a ds-siNA at day 0. The sequences of the ds-siNA tested in this example are shown in Table 7.

FIG. 4 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G03), ds-siNA-0165 (G04), ds-siNA-0163 (G05), or ds-siNA-0166 (G06). These results demonstrate that the ds-siNAs containing various patterns of 2′-fluoro nucleotides and 2′-O-methyl nucleotides can effectively treated HBV.

TABLE 7

ds-siNA sequences tested in AAV-HBV mouse model

Sense strand sequence
Antisense strand sequence

ds-siNA ID
(5′-3′)
(5′-3′)

ds-siNA-
mCpsmCpsfGmUmGmUfGfCfAmCmUf
mUpsfGpsmAmAmGmCmGmAmAmGm

0160
UmCmGmCmUfUmCmA-p-(PS)2-
UmGmCfAmCmAmCmGmGpsmUpsmC

GalNAc4 (SEQ ID NO: 600)
(SEQ ID NO: 272)

ds-siNA-
mGpsmUpsfGmGmUmGfGfAfCmUmU
mApsfUpsmUmGmAmGmAmGmAmA

0165
fCmUmCmUmCfAmAmU-p-(PS)2-
mGmUmCfCmAmCmCmAmCpsmGpsm

GalNAc4 (SEQ ID NO: 601)
A (SEQ ID NO: 292)

ds-siNA-
mGpsmCpsmUmGmCmUfAmUfGfCfC
mApsfApsmGmAmAfGmAmUmGmAm

0163
mUmCmAmUmCmUmUmCmUmU-p-
GmGmCfAmUfAmGmCmAmGm psmA

(PS)2-GalNAc4 (SEQ ID NO: 602)
psmG (SEQ ID NO: 287)

ds-siNA-
mUpsmGpsfUmGmCmAfCfUmUmCm
mApsfGpsmGmUmGmAmAmGmCmGm

0166
GmCmUmUmCmAfCmCmU-p-(PS)2-
AmAmGfUmGmCmAmCmApsmCpsmG

GalNAc4 (SEQ ID NO: 603)
(SEQ ID NO: 303)

Example 15. ds-siNA Activity Assay and Testing in AAV-HBV Mouse Model

This example investigates the in vitro and in vivo activity of ds-siNAs. The sequences of the ds-siNAs tested in this example are shown in Table 8. As shown in Table 8, the ds-siNAs comprise a sense and antisense strand comprising a mixture of 2′-fluoro and 2′-O-methyl nucleotides. The total number of 2′-fluoro nucleotides in the ds-siNAs are between 6-8. The 2′-fluoro nucleotides may be at specific positions, such as nucleotide position 3, 5, 7, 8, 9, 10, 11, 12, and/or 17 from the 5′ end of the sense strand or 2, 5, 6, 8, 10, 14, 16, 17, and/or 18. The 2′-fluoro nucleotides and 2′-O-methyl nucleotides might occur at specific patterns on the antisense strand, such as an alternating 1:2 or 1:3 pattern, wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 or 3 nucleotides are 2-O-methyl nucleotides.

In Vitro Activity Assay

Homo sapiens HepG2.2.15 cells were cultured in Dulbecco's Modified Eagle's Medium (DMEM) (ATCC 30-2002) supplemented to also contain 10% fetal calf serum (FCS). Cells were incubated at 37° C. in an atmosphere with 5% CO₂in a humidified incubator. For transfection of HepG2.2.15 cells with HBV targeting siRNAs, cells were seeded at a density of 15000 cells/well in 96-well regular tissue culture plates. Transfection of cells was carried out using RNAiMAX (Invitrogen/Life Technologies) according to the manufacturer's instructions. Dose-response experiments were done with oligo concentrations of 40, 20, 10, 5, 2.5, 1.25, 0.625, 0.3125, 0.15625 and 0.07813 nM. For each HBV targeting siRNA treatment (e.g., ds-siRNA, as identified by the ds-siNA ID in Table 8), four wells were transfected in parallel, and individual data points were collected from each well. After 24 h of incubation with siRNA, media was removed, and cells were lysed and analyzed with a QuantiGene2.0 branched DNA (bDNA) probe set specific for HBV genotype D (also called Hepatitis B virus subtype ayw, complete genome of 3182 base-pairs) as present in cell line HepG2.2.15.

For each well, the HBV on-target mRNA levels were normalized to the GAPDH mRNA level. Table 8 shows the activity of the HBV targeting ds-siRNAs expressed as EC50, which is 50% reduction of normalized HBV RNA level from no drug control, where A=EC50<0.5 nM; B=0.5 nM<EC50<1; and C=EC50>1.

In Vivo Testing in AAV-HBV Mouse Model:

GalNAc conjugated ds-siNAs were further tested at a single dose of 5 mg/kg at day 0 in the adeno-associated virus (AAV)-HBV mouse model. The resulting nadir log₁₀reduction in serum HBsAg is presented in Table 8, where X≥1 log₁₀reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

FIG. 5A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0160 (G03). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0160 on day 0.

FIG. 5B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0160 (G15). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0160 on day 0.

FIG. 5C shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0160 (G03). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0.

FIG. 5D shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G03), or ds-siNA-0109 (G09). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0.

FIGS. 5E-5F show a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0169 (G18). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0169 on day 0.

FIG. 5G shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0169 (G04). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0169 on day 0.

FIG. 5H shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01) or ds-siNA-0169 (G04). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0.

FIG. 5I shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0169 (G04) or ds-siNA-0147 (G08). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0.

FIG. 5J shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0166 (G06), or ds-siNA-0153 (G14). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0.

FIG. 5K shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0163 (G05), or ds-siNA-0119 (G13). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0.

These results demonstrate that ds-siNAs comprising combination of 2′-fluoro nucleotides and 2′-O-methyl nucleotides can be used to target HBV X and S gene sequences, which resulted in successful treatment of HBV.

As exemplified by ds-siNA-0160 and ds-siNA-0165, ds-siNAs comprising (a) a sense strand comprising 19 nucleotides, wherein 6 nucleotides are 2′-fluoro nucleotides and 13 nucleotides are 2′-O-methyl nucleotides; (b) an antisense strand comprising 21 nucleotides, wherein 2 nucleotides are 2′-fluoro nucleotides and 19 nucleotides are 2′-O-methyl nucleotides; and (c) a conjugated moiety, wherein the conjugated moiety is attached to the 3′ end of the sense strand, resulted in successful treatment of HBV as evidenced by HBsAg reduction in serum. See FIGS. 4 and 5A-5D, and Table 8. For ds-siNA-0160 and ds-siNA-0165, the 2′-fluoro nucleotides were located at positions 3, 7-9, 12, and 17 from the 5′ end of the sense strand and at positions 2 and 14 from the 5′ end of the antisense strand.

As exemplified by ds-siNA-0166, ds-siNAs comprising (a) a sense strand comprising 19 nucleotides, wherein 4 nucleotides are 2′-fluoro nucleotides and 15 nucleotides are 2′-O-methyl nucleotides; (b) an antisense strand comprising 21 nucleotides, wherein 2 nucleotides are 2′-fluoro nucleotides and 19 nucleotides are 2′-O-methyl nucleotides; and (c) a conjugated moiety, wherein the conjugated moiety is attached to the 3′ end of the sense strand, resulted in successful treatment of HBV as evidenced by HBsAg reduction in serum. See FIGS. 4 and 5J, and Table 8. For ds-siNA-0166, the 2′-fluoro nucleotides were located at positions 3, 7, 8, and 17 from the 5′ end of the sense strand and at positions 2 and 14 from the 5′ end of the antisense strand.

As exemplified by ds-siNA-0153, ds-siNAs comprising (a) a sense strand comprising 19 nucleotides; (b) an antisense strand comprising 21 nucleotides, wherein the nucleotides in the antisense strand comprise at least two alternating 1:3 modification pattern, and wherein approximate 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides in repeat pattern; and (c) a conjugated moiety, wherein the conjugated moiety is attached to the 3′ end of the sense strand, resulted in successful treatment of HBV as evidenced by HBsAg reduction in serum. See FIG. 5J. For ds-siNA-0153, the sense strand comprises 6 2′-fluoro nucleotides at positions 3, 7-9, 12, and 17 from the 5′ end of the sense strand. In addition, the antisense strand comprises 5 repeats of the 1:3 modification pattern starting at position 2 from the 5′ end of the antisense strand.

As exemplified by ds-siNA-0109, ds-siNAs comprising (a) a sense strand comprising 19 nucleotides wherein 4 nucleotides are 2′-fluoro nucleotides and 15 nucleotides are 2′-O-methyl nucleotides; (b) an antisense strand comprising 21 nucleotides, wherein 4 nucleotides are 2′-fluoro nucleotides and 17 nucleotides are 2′-O-methyl nucleotides; and (c) a conjugated moiety, wherein the conjugated moiety is attached to the 3′ end of the sense strand, resulted in successful treatment of HBV as evidenced by HBsAg reduction in serum. See FIG. 5D. For ds-siNA-0109 the sense strand comprises 4 2′-fluoro nucleotides at positions 5 and 7-9 from the 5′ end of the sense strand. In addition, the antisense strand comprises 5 repeats of the 1:2 modification pattern starting at positions 2, 5, 8, 14, and 17 from the 5′ end of the antisense strand.

As exemplified by ds-siNA-0147, ds-siNAs comprising (a) a sense strand comprising 19 nucleotides; (b) an antisense strand comprising 21 nucleotides, wherein the nucleotides in the antisense strand comprise at least two alternating 1:2 modification pattern, and wherein approximate 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides in repeat pattern; and (c) a conjugated moiety, wherein the conjugated moiety is attached to the 3′ end of the sense strand, resulted in successful treatment of HBV as evidenced by HBsAg reduction in serum. See FIG. 5I. For ds-siNA-0147, the 2′-fluoro nucleotides were located at positions 5 and 7-9 from the 5′ end of the sense strand and at positions 2, 6, 14, and 16 from the 5′ end of the antisense strand.

TABLE 8

ds-siNA tested in AAV-HBV Mouse Model

ds-

EC50
HBsAg

siNA
Sense strand
Antisense strand
HepG2.
Nadir

ID
sequence (5′-3′)
sequence (5′-3′)
2.15*
(Log)**

ds-
mCpsmCpsmGmUfGmUfGfCf
mUpsfGpsmAmAfGmCmGfA

siNA-
AmCmUmUmCmGmCmUmU
mAmGmUmGmCfAmCmAfC

0109
mCmA-p-(PS)2-GalNac4 (SEQ
mGmGpsmUpsmC (SEQ ID

ID NO: 604)
NO: 605)

ds-
mGpsmCpsmUmGfCmUmAm
mApsfApsmGmAmAmGmA

siNA-
UfGfCfCmUmCfAmUmCmU
mUmGmAmGmGmCfAmUm

0119
mUfCmUmU-p-(PS)2-GalNac4
AmGmCmAmGmCpsmApsm

(SEQ ID NO: 606)
G (SEQ ID NO: 495)

ds-
mGpsmUpsmGmGfUmGfGfAf
mApsfUpsmUmGmAfGmAm

siNA-
CmUmUmCmUmCmUmCmA
GmAmAmGmUmCfCmAfCm

0147
mAmU-p-(PS)2-GalNac4 (SEQ
CmAmCpsmGpsmA (SEQ ID

ID NO: 607)
NO: 608)

ds-
mUpsmGpsfUmGmCmAfCfUf
mApsfGpsmGmUmGfAmAm

siNA-
UmCmGfCmUmUmCmAfCm
GmCfGmAmAmGfUmGmC

0153
CmU-p-(PS)2-GalNac4 (SEQ
mAfCmApsmCpsmG (SEQ

ID NO: 609)
ID NO: 610)

ds-
mGpsmCpsfGmGmGmGfUfUf
mUpsfCpsmAmAmCmAmAmGm
A
X

siNA-
UmUmUfCmUmUmGmUfUm
AmAmAmAmAfCmCmCmCmGm

0167
GmA-p-(PS)2-GalNac4 (SEQ
CpsmCpsmU

ID NO: 611)
(SEQ ID NO: 285)

ds-
mGpsmCpsfGmGmGmGfUfU
mUpsfCpsmAmAmCmAmA
C
X

siNA-
mUmUmUmCmUmUmGmUf
mGmAmAmAmAmAfCmCm

0162
Um GmA-p-(PS)2-GalNac4
CmCmGmCpsmCpsmU (SEQ

(SEQ ID NO: 612)
ID NO: 285)

ds-
mGpsmUpsfGmGmUmGfGfAf
mApsfUpsmUmGmAmGmA
A
X

siNA-
CmUmUfCmUmCmUmCfAm
mGmAmAmGmUmCfCmAm

0165
AmU-p-(PS)2-GalNac4 (SEQ
CmCmAmCpsmGpsmA (SEQ

ID NO: 601)
ID NO: 292)

ds-
mUpsmCpsmGmUmGmGfUm
mApsfUpsmUmGmAfGmAm
A
X

siNA-
GfGfAfCmUmUmCmUmCmU
GmAmAmGmUmCfCmAfCm

0168
mCmAmAmU-p-(PS)2-
CmAmCmGmApsmGpsmU

GalNac4 (SEQ ID NO: 613)
(SEQ ID NO: 298)

ds-
mGpsmCpsmUmGmCmUfAm
mApsfApsmGmAmAfGmAm
A
Y

siNA-
UfGfCfCmUmCmAmUmCmU
UmGmAmGmGmCfAmUfA

0163
mUmCmUmU-p-(PS)2-
mGmCmAmGmCpsmApsmG

GalNac4 (SEQ ID NO: 602)
(SEQ ID NO: 287)

ds-
mCpsmUpsfGmCmUmAfUfGf
mApsfGpsmAmAmGmAmU
A
Y

siNA-
CmCmUfCmAmUmCmUfUm
mGmAmGmGmCmAfUmAm

0161
CmU-p-(PS)2-GalNac4 (SEQ
GmCmAmGpsmCpsmA (SEQ

ID NO: 614)
ID NO: 277)

ds-
mCpsmCpsfGmUmGmUfGfCf
mUpsfGpsmAmAmGmCmG
A
X

siNA-
AmCmUfUmCmGmCmUfUm
mAmAmGmUmGmCfAmCm

0160
CmA-p-(PS)2-GalNac4 (SEQ
AmCmGmGpsmUpsmC (SEQ

ID NO: 600)
ID NO: 272)

ds-
mCpsmCpsfGmUmGmUfGfCf
mUpsfGpsmAmAmGmCmG
A
X

siNA-
AmCmUfUmCmGmCmUfUm
mAmAmGmUmGmCfAmCm

0169
CmA-p-(PS)2-GalNac4 (SEQ
AmCmGmGpsTpsT (SEQ ID

ID NO: 600)
NO: 375)

ds-
mUpsmGpsfUmGmCmAfCfUf
mApsfGpsmGmUmGmAmAmGm
A
X

siNA-
UmCmGfCmUmUmCmAfCm
CmGmAmAmGfUmGmCmAmCm

0170
CmU-p-(PS)2-GalNac4 (SEQ
ApsmCpsmG

ID NO: 609)
(SEQ ID NO: 303)

ds-
mUpsmGpsfUmGmCmAfCfU
mApsfGpsmGmUmGmAmA
A
X

siNA-
mUmCmGmCmUmUmCmAfC
mGmCmGmAmAmGfUmGm

0166
mCmU-p-(PS)2-GalNAc4
CmAmCmApsmCpsmG (SEQ

(SEQ ID NO: 615)
ID NO: 303)

ds-
mUpsmGpsfUmGmCmAfCfU
mApsfGpsmGmUmGmAmAmGm
A
X

siNA-
mUmCmGmCmUmUmCmAfC
CmGmAmAmGfUmGmCmAmCm

0171
mCmU-p-(PS)2-GalNac4
ApsTpsT

(SEQ ID NO: 615)
(SEQ ID NO: 407)

mX = 2′-O-methyl nucleotide;

fX =2′-fluoro nucleotide;

ps = phosphorothioate linkage

*For EC50, A = EC50 < 0.5 nM; B = 0.5 nM < EC50 < 1; and C = EC50 > 1.

**For HBsAg Nadir, X ≥ 1 logio reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is < 0.5 log₁₀reduction in HBsAg.

Example 16. Testing of Ds-siNAs Having a 5′-Stabilized End Cap in AAV-HBV Mouse Model

This example investigates the in vivo activity of ds-siNAs having a 5′-stabilized end cap. The sequences of the ds-siNAs tested in this example are shown in Table 9.

FIG. 6A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G15) (ds-siNA without a 5′-stabilized end cap, e.g., vinyl phosphonate), or ds-siNA-080 (G14) (ds-siNA with a 5′-stabilized end cap, e.g., vinyl phosphonate). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0. The resulting nadir log₁₀reduction in serum HBsAg is presented in Table 9, where X≥1 log₁₀reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

FIG. 6B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0169 (G16) (ds-siNA without a 5′-stabilized end cap, e.g., vinyl phosphonate), or ds-siNA-081 (G13) (ds-siNA with a 5′-stabilized end cap, e.g., vinyl phosphonate). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0. The resulting nadir log₁₀reduction in serum HBsAg is presented in Table 9, where X≥1 log₁₀reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

FIG. 7A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0165 (G18) (ds-siNA without a 5′-stabilized end cap, e.g., vinyl phosphonate), or ds-siNA-0127 (G17) (ds-siNA with a 5′-stabilized end cap, e.g., vinyl phosphonate). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0. The resulting nadir log₁₀reduction in serum HBsAg is presented in Table 9, where X≥1 log₁₀reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

FIG. 7B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0168 (G20) (ds-siNA without a 5′-stabilized end cap, e.g., vinyl phosphonate), or ds-siNA-0150 (G19) (ds-siNA with a 5′-stabilized end cap, e.g., vinyl phosphonate). AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of each ds-siNA on day 0. The resulting nadir log₁₀reduction in serum HBsAg is presented in Table 9, where X≥1 log₁₀reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

These results demonstrate that the addition of a 5′-stabilized end cap can improve the efficacy of ds-siNAs without a 5′-stabilized end cap.

TABLE 9

ds-siNA sequences and HBsAg Nadir

HBsAg

ds-siNA
Sense strand
Antisense strand
Nadir

ID
sequence (5′-3′)
sequence (5′-3′)
(Log)*

ds-siNA-
mCpsmCpsfGmUmGmUfGfC
mUpsfGpsmAmAmGmCmGmAmAm
Y

0160
fAmCmUfUmCmGmCmUfU
GmUmGmCfAmCmAmCmGmGpsm

mCmA-(PS)2-p-GalNAc4
UpsmC (SEQ ID NO: 272)

(SEQ ID NO: 616)

ds-siNA-
mCpsmCpsfGmUmGmUfGfC
vmUpsfGpsmAmAmGmCmGmAmA
X

080
fAmCmUfUmCmGmCmUfU
mGmUmGmCfAmCmAmCmGmGps

mCmA-(PS)2-p-GalNAc4
mUpsmC (SEQ ID NO: 462)

(SEQ ID NO: 616)

ds-siNA-
mCpsmCpsfGmUmGmUfGfC
mUpsfGpsmAmAmGmCmGmAmAm
Y

0169
fAmCmUfUmCmGmCmUfU
GmUmGmCfAmCmAmCmGmGpsTp

mCmA-(PS)2-p-GalNAc4
sT (SEQ ID NO: 375)

(SEQ ID NO: 616)

ds-siNA-
mCpsmCpsfGmUmGmUfGfC
vmUpsfGpsmAmAmGmCmGmAmA
X

081
fAmCmUfUmCmGmCmUfU
mGmUmGmCfAmCmAmCmGmGpsT

mCmA-(PS)2-p-GalNAc4
psT (SEQ ID NO: 463)

(SEQ ID NO: 616)

ds-siNA-
mGpsmUpsfGmGmUmGfGfA
mApsfUpsmUmGmAmGmAmGmAm
X

0165
fCmUmUfCmUmCmUmCfA
AmGmUmCfCmAmCmCmAmCpsmG

mAmU-(PS)2-p-GalNAc4
psmA (SEQ ID NO: 292)

(SEQ ID NO: 617)

ds-siNA-
mGpsmUpsfGmGmUmGfGfA
vmApsfUpsmUmGmAmGmAmGmA
X

0127
fCmUmUfCmUmCmUmCfA
mAmGmUmCfCmAmCmCmAmCpsm

mAmU-(PS)2-p-GalNAc4
GpsmA (SEQ ID NO: 503)

(SEQ ID NO: 617)

ds-siNA-
mUpsmCpsmGmUmGmGfUm
mApsfUpsmUmGmAfGmAmGmAmA
Y

0168
GfGfAfCmUmUmCmUmCm
mGmUmCfCmAfCmCmAmCmGmAp

UmCmAmAmU-(PS)2-p-
smGpsmU (SEQ ID NO: 298)

GalNAc4 (SEQ ID NO: 618)

ds-siNA-
mUpsmCpsmGmUmGmGfUm
vmApsfUpsmUmGmAfGmAmGmAm
X

0150
GfGfAfCmUmUmCmUmCm
AmGmUmCfCmAfCmCmAmCmGm

UmCmAmAmU-(PS)2-p-
ApsmGpsmU (SEQ ID NO: 523)

GalNAc4 (SEQ ID NO: 618)

mX = 2′-O-methyl nucleotide;

fX = 2′-fluoro nucleotide;

ps = phosphorothioate linkage;

VP = vinyl phosphonate

*For HBsAg Nadir, X ≥ 1 logio reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is < 0.5 logio reduction in HBsAg.

Example 17. Efficacy of a Combination Therapy in AAV-HBV Mouse Model

This example investigates the efficacy of a combination therapy comprising an antisense oligonucleotide (ASO 1, 5′ GalNAc4-ps-GalNAc4-ps-GalNAc4-po-mA-po-lnGpslnApslnTpslnApslnApsApsAps(5OH)CpsGps(5m)Cps(5m)CpsGps(5m)CpslnApslnG pslnApscp(5m)C-3′(SEQ ID NO: 534)) and a ds-siNA-0160 for treating HBV in an AAV-HBV mouse model.

FIG. 8A shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G06), ASO 1 (G18), or a combination of ds-siNA-0160 and ASO 1 (G20). AAV-HBV mice were subcutaneously injected with (a) 5 mL/kg of vehicle, three times a week, from days 0-42 (G01); (b) a single dose of 3 mg/kg of ds-siNA-0160 on day 0 (G06); (c) 3 mg/kg of ASO 1 on a weekly basis, from days 0-21 (G18); or (d) a combination of ASO 1 and ds-siNA-0160, wherein ASO 1 was administered at a dose of 3 mg/kg on a weekly basis, from days 0-21; and ds-siNA-0160 was administered as a single dose of 3 mg/kg at day 0.

FIG. 8B shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G01), ds-siNA-0160 (G06), ASO 1 (G18), or a combination of ds-siNA-0160 and ASO 1 (G20). AAV-HBV mice were subcutaneously injected with (a) 5 mL/kg of vehicle, three times a week, from days 0-42 (G01); (b) a single dose of 10 mg/kg of ds-siNA-0160 on day 0 (G06); (c) 10 mg/kg of ASO 1 on a weekly basis, from days 0-21 (G18); or (d) a combination of ASO 1 and ds-siNA-0160, wherein ASO 1 was administered at a dose of 10 mg/kg on a weekly basis, from days 0-21; and ds-siNA-0160 was administered as a single dose of 3 mg/kg at day 0.

FIG. 8C shows a graph of a synergy analysis of an in vitro combination therapy with the ASO 2 and ds-siNA-0164. For the ds-siNA-0164 combination studies with ASO 2, 35,000 cells per well were reverse transfected in a collagen I-coated 96-well plate (Corning, Biocoat; Catalog 356698). Test articles ds-siNA-0164 and ASO 2 were diluted in Opti-MEM™ I Reduced Serum Medium (Thermo Fisher Scientific; Catalog 31985088) to 40× the desired final test concentration then serially diluted (1:3) up to 5 or 9 distinct concentrations, respectively. A 3.25-μL aliquot of each diluted compound was combined in a checkerboard fashion. This combination of compounds was mixed with 0.3 μL Lipofectamine© RNAiMAX Transfection Reagent (Thermo Fisher Scientific, Catalog 13778150) and 6.2 μL of Opti-MEM™ I Reduced Serum Medium. After incubating for 20 minutes, the mixture was added to the cells. Space was also allotted for titrations of each compound alone as reference controls. Cells were incubated with compounds for 3 days at 37° C. in a 5% CO₂atmosphere. After that, HBsAg in the supernatant of cell culture was assayed by ELISA and cell viability was measured with Cell Titer Glow, the same procedures as in HepG2.2.15 in vitro assay section. The HBsAg reduction synergy between two test articles were analyzed using MacSynergy Software.

These results demonstrate that a combination therapy with ASO 1 and ds-siNA-0160 resulted in a greater reduction in serum HBsAg as compared to treatment with ASO 1 or ds-siNA-0160 alone.

Example 18. siNA Activity Assays

This example evaluates the activity of the siNAs disclosed in Table 10 (as identified by the ds-siNA ID). siRNAs were synthesized as described in Example 1. A conjugated moiety (e.g., ligand monomer) was further conjugated to the 3′ end of the sense strand (note: for ds-siNA-067 and ds-siNA-083, the ligand monomer was conjugated to the 5′ end of the sense strand). A 5′-stabilized end cap was further attached to the 5′ end of the antisense strand of some siRNAs.

In Vitro Assay:

Homo sapiens HepG2.2.15 cells were cultured in Dulbecco's Modified Eagle's Medium (DMEM) (ATCC 30-2002) supplemented to also contain 10% fetal calf serum (FCS). Cells were incubated at 37° C. in an atmosphere with 5% CO2 in a humidified incubator. For transfection of HepG2.2.15 cells with HBV targeting siRNAs, cells were seeded at a density of 15000 cells/well in 96-well regular tissue culture plates. Transfection of cells was carried out using RNAiMAX (Invitrogen/Life Technologies) according to the manufacturer's instructions. Dose-response experiments were done with oligo concentrations of 40, 20, 10, 5, 2.5, 1.25, 0.625, 0.3125, 0.15625 and 0.07813 nM. For each HBV targeting siRNA treatment (e.g., ds-siRNA, as identified by the ds-siNA ID in Table 6), four wells were transfected in parallel, and individual data points were collected from each well. After 24 h of incubation with siRNA, media was removed, and cells were lysed and analyzed with a QuantiGene2.0 branched DNA (bDNA) probe set specific for HBV genotype D (also called Hepatitis B virus subtype ayw, complete genome of 3182 base-pairs) as present in cell line HepG2.2.15.

For each well, the HBV on-target mRNA levels were normalized to the GAPDH mRNA level. As shown in Table 10, the activity of the HBV targeting ds-siRNAs was expressed as EC50, 50% reduction of normalized HBV RNA level from no drug control, where A=EC50≤5 nM; B=5 nM<EC50<10; C=EC50≥10. As shown in Table 10, the cytotoxicity of the HBV targeting ds-siRNAs was expressed by CC50 of 50% reduction of GAPDH mRNA from no drug control.

In Vivo Assay:

GalNAc conjugated siRNA with or without 5′-stabilized end caps were subcutaneously injected at a single dose of 5 mg/kg into AAV-HBV mice. The target knockdown magnitude was measured from serum. The resulting max HBsAg knockdown (log₁₀) is presented in Table 10, where X≥1 log₁₀reduction in HBsAg, Y is 0.5-1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

Example 19: Analysis of 5′-Stabilized End Cap on the Efficacy of siNAs

In this example, the role of a 5′-stabilized end cap on the efficacy of siNAs was investigated. Specifically, the first nucleotide on the 5′ end of the antisense strand was modified to contain a 5′-stabilized end cap. The ds-siNAs investigated in this example are shown in the table below:

ds-siNA
Sense Strand
Antisense Strand Sequence

ID
Sequence (5′→3′)
(5′→3′)

ds-siNA-
mUpsmGpsfUmGmCmAfCfUmUmCmG
mApsfGpsmGmUmGmAmAmGmCm

0166
mCmUmUmCmAfCmCmU-p-(PS)2-
GmAmAmGfUmGmCmAmCmApsm

GalNAc4 (SEQ ID NO: 615)
CpsmG (SEQ ID NO: 303)

ds-siNA-
mUpsmGpsfUmGmCmAfCfUmUmCmG
vmApsfGpsmGmUmGmAmAmGmC

0155
mCmUmUmCmAfCmCmU-p-(PS)2-
mGmAmAmGfUmGmCmAmCmAps

GalNAc4 (SEQ ID NO: 615)
mCpsmG (SEQ ID NO: 525)

ds-siNA-
mUpsmGpsfUmGmCmAfCfUmUmCmG
d2vmApsfGpsmGmUmGmAmAmG

0157
mCmUmUmCmAfCmCmU-p-(PS)2-
mCmGmAmAmGfUmGmCmAmCm

GalNAc4 (SEQ ID NO: 615)
ApsmCpsmG (SEQ ID NO: 529)

mX = 2′-O-methyl nucleotide;

fX = 2′-fluoro nucleotide;

vmA = 5′-vinyl phosphonate 2′-O-methyl adenosine;

d2vmA = deuterated 5′ vinyl phosphonate adenosine;

ps = phosphorothioate linkage

AAV-HBV mice were subcutaneously injected with vehicle or ds-siNAs. ds-siNA-0166, ds-siNA-0155, or ds-siNA-0157 were subcutaneously injected at a single dose of 5 mg/kg into AAV-HBV mice. The target knockdown magnitude is measured from serum. As shown in FIG. 9, the presence of the 5′ stabilized end cap in the first nucleotide from the 5′ end of the antisense strand in ds-siNA-0155 (triangle) and ds-siNA-0157 (square) improved the efficacy of the siNA (squares and triangles) as compared to the siNA without the 5′ stabilized end cap (ds-siNA-0166, diamond). In addition, the presence of the deuterated 5′ vinyl phosphonate in ds-siNA-0157 resulted in a greater improvement in efficacy of a ds-siNA as compared to the presence of the 5′ vinylphosphanate in ds-siNA-0155. These results demonstrate that a 5′ stabilized end cap improves the efficacy of siNAs, with the greatest improvement seen in siNAs containing deuterated 5′ vinyl phosphonate.

Example 20: Analysis of HBV siRNA S and X Combination Therapy

In this example, combination therapy using an siNA targeting the S gene of HBV and an siNA targeting the X gene of HBV was examined. AAV-HBV mice were treated with vehicle, a single siNA therapy, or a combination siNA therapy targeting the S gene and X gene of HBV. AAV-HBV mice were subcutaneously injected with a single dose of ds-siNA-0160 or ds-siNA-0165 on day 0. For the combination siNA therapy, AAV-HBV mice were subcutaneously injected with a single dose of 1.5 mg/kg of ds-siNA-0165 (S trigger) and 1.5 mg/kg of ds-siNA-0160 (X trigger) on day 0. As shown in FIG. 10, the combination therapy with a siNA targeting the S gene and a siNA targeting the X gene was more potent than the single therapy with ds-siNA-0165 or ds-siNA-0160.

Example 21. Synthesis of Monomer

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Preparation of (2a): To a solution of 1a (10.0 g, 29.5 mmol) in ACN (200.0 mL), KSAc (13.5 g, 118.6 mmol) was added at r.t., the mixture was stirred at r.t. for 15 h, TLC showed 1a was consumed completely. Mixture was filtered by silica gel and filter cake was washed with DCM (100.0 mL), the filtrate was concentrated to give crude 2a (11.1 g) as an oil. ¹H-NMR (400 MHz, CDCl₃): δ 7.32-7.24 (m, 5H), 7.16 (d, J=8.9 Hz, 4H), 6.82 (d, J=8.9 Hz, 4H), 3.82 (s, 6H), 2.28 (s, 3H).

Preparation of (3a): To a solution of crude 2a (11.1 g, 29.2 mmol) in THF (290.0 mL), LiAlH₄(2.0 g, 52.6 mmol) was added at 0° C. and kept for 10 min, reaction was stirred at r.t. for 5 h under N₂, TLC showed 2a was consumed completely. Mixture was put into aqueous NaHCO₃solution and extracted with EA (500.0 mL*2), organic phase was concentrated to give crude which was purified by column chromatography (SiO₂, PE/EA=30:1 to 10:1) to give 3a (8.1 g, 95% purity) as a white solid. ESI-LCMS: m/z 335.3 [M−H]⁻; ¹H-NMR (400 MHz, CDCl₃): δ 7.33-7.24 (m, 5H), 7.19 (d, J=8.8 Hz, 4H), 6.82 (d, J=8.8 Hz, 4H), 3.83 (s, 6H), 3.09 (s, 1H).

Preparation of (2): To a solution of 1 (20.0 g, 81.3 mmol) in pyridine (400.0 mL), MsCl (10.23 g, 89.43 mmol) was added dropwise at −10° C., reaction was stirred at −10° C. for 1 h, LCMS showed 1 was consumed completely, 100.0 mL aqueous NaHCO₃solution was added and extracted with DCM (100.0 mL*2), organic phase was concentrated to give crude which was purified by column chromatography (SiO₂, DCM/MeOH=30:1 to 10:1) to give 2 (9.5 g, 97% purity) as a white solid. ESI-LCMS: m/z 325.3 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.45 (s, 1H), 7.64-7.62 (d, J=8.0 Hz, 1H), 5.92-5.85 (m, 2H), 5.65-5.63 (d, J=8.0 Hz, 1H), 5.26-5.11 (m, 1H), 4.53-4.37 (m, 2H), 4.27-4.16 (m, 1H), 4.10-4.04 (m, 1H), 3.23 (s, 3H).

Preparation of (3): Intermediate 3 was prepared by prepared according to reaction condition described in reference Helvetica Chimica Acta, 2004, 87. 2812. To a solution of 2 (9.2 g, 28.3 mmol) in dry DMSO (130.0 mL). DMTrSH (14.31 g, 42.5 mmol) was added, followed by tetramethylguanidine (3.6 g, 31.2 mmol) was added under N₂, reaction was stirred at r.t. for 3 h, LCMS showed 2 was consumed completely. 100.0 mL H₂O was added and extracted with EA (100.0 mL*2), organic phase was concentrated to give crude which was purified by column chromatography (SiO₂, PE/EA=5:1 to 1:1) to give 3 (12.0 g, 97% purity) as a white solid. ESI-LCMS: m/z 563.2 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.43-11.42 (d, J=4.0 Hz, 1H), 7.57-7.55 (d, J=8.0 Hz, 1H), 7.33-7.17 (m, 9H), 6.89-6.86 (m, 4H), 5.80-5.74 (m, 1H), 5.65-5.62 (m, 1H), 5.58-5.57 (d, J=4.0 Hz, 1H), 5.16-5.01 (m, 1H), 3.98-3.90 (m, 1H), 3.73 (s, 6H), 3.73-3.67 (m, 1H), 2.50-2.37 (m, 2H).

Preparation of Example 21 monomer: To a solution of 3 (10.0 g, 17.7 mmol) in dichloromethane (120.0 mL) with an inert atmosphere of nitrogen was added CEOP[N(iPr)₂]₂(6.4 g, 21.2 mmol) and DCI (1.8 g, 15.9 mmol) in order at room temperature. The resulting solution was stirred for 1.0 h at room temperature and diluted with 50 mL dichloromethane and washed with 2×50 mL of saturated aqueous sodium bicarbonate and 1×50 mL of saturated aqueous sodium chloride respectively. The organic phase was dried over anhydrous sodium sulfate, filtered and concentrated till no residual solvent left under reduced pressure. The residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=6/1; Detector, UV 254 nm. This resulted in to give Example 21 monomer (12.8 g, 98% purity, 93% yield) as an oil. ESI-LCMS: m/z 765.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.44 (s, 1H), 7.70-7.66 (m, 1H), 7.32-7.18 (m, 9H), 6.89-6.85 (m, 4H), 5.80-5.64 (m, 2H), 5.38-5.22 (m, 1H), 4.38-4.15 (m, 1H), 3.81-3.70 (m, 8H), 3.61-3.43 (m, 3H), 2.76-2.73 (m, 1H), 2.66-2.63 (m, 1H), 2.50-2.41 (m, 2H), 1.12-1.05 (m, 9H), 0.97-0.95 (m, 3H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.01, 148.97, 148.74, 148.67; ¹⁹F-NMR (376 MHz, DMSO-d₆): δ 149.01, 148.97, 148.74, 148.67.

Example 22. Synthesis of Monomer

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Preparation of (2): To a stirred solution of 1 (2.0 g, 8.8 mmol) in pyridine (20 mL) were added DMTrCl (3.3 g, 9.7 mmol) at r.t. The reaction mixture was stirred at r.t. for 2.5 hrs. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (100 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by silica gel column chromatography (eluent, DCM:MeOH=50:1-20:1) to give 2 (3.7 g, 7.2 mmol, 80.1%) as a white solid. ESI-LCMS: m/z 527 [M−H]⁻.

Preparation of (3): To the solution of 2 (2.8 g, 5.3 mmol) in dry DMF (56 mL) was added (CD₃O)₂Mg (2.9 g, 31.8 mmol) at r.t. under N₂atmosphere. The reaction mixture was stirred at 100° C. for 15 hrs. With ice-bath cooling, the reaction was quenched with saturated aq. NH₄Cl and extracted with EA (300 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 3 (2.0 g, 3.6 mmol, 67.9%) as a white solid. ESI-LCMS: m/z 562 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.38 (s, 1H), 7.73 (d, J=8 Hz, 1H), 7.46-7.19 (m, 9H), 6.91 (d, J=7.4 Hz, 4H), 5.81-5.76 (AB, J=20 Hz, 1H), 5.30 (d, J=8 Hz, 1H), 5.22 (s, 1H), 4.25-4.15 (m, 1H), 3.99-3.92 (m, 1H), 3.85-3.79 (m, 1H), 3.74 (s, 6H), 3.34-3.18 (m, 31H).

Preparation of Example 22 monomer: To a suspension of 3 (2.0 g, 3.5 mmol) in DCM (20 mL) was added DCI (357 mg, 3.0 mmol) and CEP[N(iPr)₂]₂(1.3 g, 4.3 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 3 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 22 monomer (2.1 g, 2.7 mmol, 77.1%) as a white solid. ESI-LCMS: m/z 764 [M+H]⁺; ¹H-NMR (400 MHz, ACN-d₃): δ 9.45-8.90 (m, 1H, exchanged with D₂O), 7.88-7.66 (m, 1H), 7.50-7.18 (m, 9H), 6.93-6.80 (m, 4H), 5.85 (d, J=8.2 Hz, 1H), 5.29-5.16 (m, 1H), 4.57-4.37 (m, 1H), 4.18-4.09 (m, 1H), 3.98-3.90 (m, 1H), 3.90-3.74 (m, 7H), 3.74-3.50 (m, 3H), 3.48-3.31 (m, 2H), 2.70-2.61 (m, 1H), 2.56-2.46 (m, 1H), 1.24-1.12 (m, 9H), 1.09-0.99 (m, 3H). ³¹P-NMR (162 MHz, ACN-d₃): δ=149.87, 149.55.

Example 23. Synthesis of Monomer

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Preparation of (2): To the solution of 1 (39.2 g, 151.9 mmol) in DMF (390.0 mL) was added imidazole (33.0 g, 485.3 mmol) and TBSCl (57.2 g, 379.6 mmol) at 0° C. The reaction mixture was stirred at room temperature for 15 hrs under N₂atmosphere. After addition of water, the resulting mixture was extracted with EA (500.0 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, concentrated to give the crude 2 (85.6 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 487.7 [M+H]⁺.

Preparation of (3): A solution of crude 2 (85.6 g) in a mixture solvent of TFA/H₂O=1/1 (400.0 mL) and THF (400.0 mL) was stirred at 0° C. for 30 min. After completion of reaction, the resulting mixture was added con.NH₃*H₂O to pH=7, and then extracted with EA (500.0 mL). The organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 3 (36.6 g, 98.4 mmol, 64.7% over two step) as a white solid. ESI-LCMS: m/z 372.5 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.36 (d, J=1 Hz, 1H), 7.92 (d, J=8 Hz, 1H), 5.83 (d, J=5 Hz, 1H), 5.67-5.65 (m, 1H), 5.19 (s, 1H), 4.30 (t, J=5 Hz, 1H), 3.85-3.83 (m, 2H), 3.68-3.52 (m, 2H), 0.88 (s, 9H), 0.09 (s, 6H).

Preparation of (4): To the solution of 3 (36.6 g, 98.4 mmol) in dry DCM (200.0 mL) and DMF (50.0 mL) was added PDC (73.9 g, 196.7 mmol), tert-butyl alcohol (188.0 mL) and Ac₂O (93.0 mL) at r.t under N₂atmosphere, the reaction mixture was stirred at r.t for 2 hrs. The solvent was removed to give a residue which was purified by silica gel column chromatography (eluent, PE/EA=4:1˜2:1) to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 4 (24.3 g, 54.9 mmol, 55.8%) as a white solid. ESI-LCMS: m/z 443.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.30 (d, J=1 Hz, 1H), 7.92 (d, J=8 Hz, 1H), 5.86 (d, J=6 Hz, 1H), 5.67-5.65 (m, 1H), 4.33-4.31 (m, 1H), 4.13 (d, J=3 Hz, 1H), 3.73-3.70 (m, 1H), 1.34 (s, 9H), 0.77 (s, 9H), 0.08 (s, 6H).

Preparation of (5): To the solution of 4 (18.0 g, 40.7 mmol) in dry THF/MeOD/D₂O=10/2/1 (145.0 mL) was added NaBD₄(5.1 g, 122.1 mmol) three times during an hour at 50° C., the reaction mixture was stirred at r.t. for 2 hrs. After completion of reaction, adjusted pH value to 7 with CH₃COOD, after addition of water, the resulting mixture was extracted with EA (300.0 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 5 (10.4 g, 27.8 mmol, 68.3%) as a white solid. ESI-LCMS: m/z 375.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.36 (d, J=1 Hz, 1H), 7.92 (d, J=8 Hz, 1H), 5.83 (d, J=5 Hz, 1H), 5.67-5.65 (m, 1H), 5.19 (s, 1H), 4.30 (t, J=5 Hz, 1H), 3.85-3.83 (m, 2H), 0.88 (s, 9H), 0.09 (s, 6H).

Preparation of (6): To a stirred solution of 5 (10.4 g, 27.8 mmol) in pyridine (100.0 mL) was added DMTrCl (12.2 g, 36.1 mmol) at r.t., The reaction mixture was stirred at r.t. for 2.5 hrs, the reaction was quenched with water and extracted with EA (200.0 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 6 (13.5 g, 19.9 mmol, 71.6%) as a white solid. ESI-LCMS: m/z 677.8 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.39 (d, J=1 Hz, 1H), 7.86 (d, J=4 Hz, 1H), 7.35-7.21 (m, 9H), 6.90-6.88 (m, 4H), 5.78 (d, J=2 Hz, 1H), 5.30-5.27 (m, 1H), 4.33-4.30 (m, 1H), 3.91 (d, J=7 Hz, 1H), 3.85-3.83 (m, 1H), 3.73 (s, 6H), 3.38 (s, 3H), 0.77 (s, 9H), 0.03 (s, 3H), 0.01 (s, 3H).

Preparation of (7): To a solution of 6 (13.5 g, 19.9 mmol) in THF (130.0 mL) was added 1 M TBAF solution (19.0 mL). The reaction mixture was stirred at r.t. for 1.5 hrs. LC-MS showed 6 was consumed completely. Water (500.0 mL) was added and extracted with EA (300.0 mL), the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 7 (10.9 g, 19.4 mmol, 97.5%) as a white solid. ESI-LCMS: m/z 563.6 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.39 (s, 1H), 7.23 (d, J=8 Hz, 1H), 7.73 (d, J=8 Hz, 1H), 7.36-7.23 (m, 9H), 6.90 (d, J=8 Hz, 4H), 5.81 (d, J=3 Hz, 1H), 5.30-5.28 (m, 1H), 5.22 (d, J=7 Hz, 1H), 4.20 (q, J=7 Hz, 1H), 3.93 (d, J=7 Hz, 1H), 3.81 (t, J=5 Hz, 1H), 3.74 (s, 6H), 3.41 (s, 3H).

Preparation of Example 23 monomer: To a suspension of 7 (10.9 g, 19.4 mmol) in DCM (100.0 mL) was added DCI (1.8 g, 15.7 mmol) and CEP[N(iPr)₂]₂(6.1 g, 20.4 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 7 was consumed completely. The mixture was washed with water twice and brine, dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 23 monomer (12.5 g, 14.5 mmol, 74.7%) as a white solid. ESI-LCMS: m/z 863.6 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.39 (s, 1H), 7.81-7.55 (m, 1H), 7.40-7.22 (m, 9H), 6.92-6.87 (m, 4H), 5.83-5.80 (m, 1H), 5.32-5.25 (m, 1H), 4.46-4.34 (m, 1H), 4.10-3.98 (m, 2H), 3.84-3.73 (m, 7H), 3.60-3.50 (m, 3H), 3.42, 3.40 (s, 3H), 2.78 (t, J=6 Hz, 1H), 2.62-2.59 (m, 1H), 2.07 (s, 1H), 1.17-0.96 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.37, 149.06.

Example 24. Synthesis of Monomer

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Preparation of (2): To the solution of 1 (13.0 g, 52.8 mmol) in DMF (100 mL) was added imidazole (12.6 g, 184.8 mmol) and TBSCl (19.8 g, 132.0 mmol) at 0° C., and the reaction mixture was stirred at room temperature for 15 h under N₂atmosphere. After addition of water, the resulting product was extracted with EA (500 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give the crude 2 (30.6 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 475 [M+H]⁺. WO2017106710A1

Preparation of (3): A solution of crude 2 (30.6 g) in a mixture solvent of TFA/H₂O=1/1 (100 mL) and THF (100 mL) was stirred at 0° C. for 30 min. After completion of reaction, the resulting mixture was added con.NH₃*H₂O to pH=7.5, and then the mixture was extracted with EA (500 mL), the organic layer was washed with brine, dried over Na₂SO₄and removed to give the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 3 (12.0 g, 33.3 mmol, 65.8% over two step) as a white solid. ESI-LCMS: m/z 361 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.39 (s, J=1 Hz, 1H, exchanged with D₂O), 7.88 (d, J=8 Hz, 1H), 5.91-5.86 (m, 1H), 5.66-5.62 (m, 1H), 5.21 (t, J=5.2 Hz, 1H, exchanged with D₂O), 5.18-5.03 (m, 1H), 4.37-4.29 (m, 1H), 3.87-3.83 (m, 1H), 3.78-3.73 (m, 1H), 3.56-3.51 (m, 1H), 0.87 (s, 9H), 0.09 (s, 6H). WO2017106710A1.

Preparation of (4): To the solution of 3 (11.0 g, 30.5 mmol) in dry DCM (60 mL) and DMF (15 mL) was added PDC (21. g, 61.0 mmol), tert-butyl alcohol (45 mL) and Ac₂O (32 mL) at r.t under N₂atmosphere. And the reaction mixture was stirred at r.t for 2 h. The solvent was removed to give a residue which was purified by silica gel column chromatography (eluent, PE:EA=4:1˜2:1) to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 4 (9.5 g, 22.0 mmol, 72.3%) as a white solid. ESI-LCMS: m/z 431 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.45 (s, J=1 Hz, 1H, exchanged with D₂O), 7.93 (d, J=8.5 Hz, 1H), 6.02-5.97 (m, 1H), 5.76-5.74 (m, 1H), 5.29-5.14 (m, 1H), 4.59-4.52 (m, 1H), 4.29-4.27 (m, 1H), 1.46 (s, 9H), 0.89 (s, 9H), 0.12 (s, 6H).

Preparation of (5): To the solution of 4 (8.5 g, 19.7 mmol) in dry THF/MeOD/D₂O=10/2/1 (80 mL) was added NaBD₄(2.5 g, 59.1 mmol) three times per an hour at 50° C. And the reaction mixture was stirred at r.t for 2 h. After completion of reaction, adjusted pH value to 7 with CH₃COOD, after addition of water, the resulting mixture was extracted with EA (300 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 5 (3.5 g, 9.7 mmol, 50.3%) as a white solid. ESI-LCMS: m/z 363 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.41 (s, J=1 Hz, 1H, exchanged with D₂O), 7.88 (d, J=8 Hz, 1H), 5.91-5.86 (m, 1H), 5.66-5.62 (m, 1H), 5.19 (t, J=5.2 Hz, 1H, exchanged with D₂O), 5.18-5.03 (m, 1H), 4.37-4.29 (m, 1H), 3.87-3.83 (m, 1H), 0.88 (s, 9H), 0.10 (s, 6H).

Preparation of (6): To a stirred solution of 5 (3.4 g, 9.7 mmol) in pyridine (35 mL) were added DMTrCl (3.4 g, 10.1 mmol) at r.t. And the reaction mixture was stirred at r.t for 2.5 h. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 6 (PCT Int. Appl., 2019173602), (5.5 g, 8.3 mmol, 85.3%) as a white solid. ESI-LCMS: m/z 665 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.50 (d, J=1 Hz, 1H, exchanged with D₂O), 7.92 (d, J=4 Hz, 1H), 7.44-7.27 (m, 9H), 6.96-6.93 (m, 4H), 5.94 (d, J=20.5 Hz, 1H), 5.39-5.37 (m, 1H), 5.32-5.17 (m, 1H), 4.60-4.51 (m, 1H), 4.01 (d, J=8.8 Hz, 1H), 3.80 (s, 6H), 0.80 (s, 9H), 0.09 (s, 3H), −0.05 (s, 3H).

Preparation of (7): To a solution of 6 (5.5 g, 8.3 mmol) in THF (50 mL) was added 1 M TBAF solution (9 mL). The reaction mixture was stirred at r.t. for 1.5 h. LC-MS showed 6 was consumed completely. Water (500 mL) was added. The product was extracted with EA (300 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 7 (4.1 g, 7.5 mmol, 90.0%) as a white solid. ESI-LCMS: m/z 551 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.42 (s, 1H, exchanged with D₂O), 7.76 (d, J=8.2 Hz, 1H), 7.39-7.22 (m, 9H), 6.90-6.88 (m, 4H), 5.83 (d, J=20.5 Hz, 1H), 5.65 (d, J=7.0 Hz, 1H, exchanged with D₂O), 5.29 (d, J=7.2 Hz, 1H), 5.18-5.03 (m, 1H), 4.40-4.28 (m, 1H), 4.01 (d, J=8.8 Hz, 1H), 3.74 (s, 6H).

Preparation of Example 24 monomer: To a suspension of 7 (4.1 g, 7.5 mmol) in DCM (40 mL) was added DCI (0.7 g, 6.4 mmol) and CEP[N(iPr)₂]₂(2.9 g, 9.7 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 7 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 24 monomer (5.0 g, 6.6 mmol, 90.0%) as a white solid. ESI-LCMS: m/z 751 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.43 (s, 1H), 7.85-7.82 (m, 1H), 7.40-7.23 (m, 9H), 6.90-6.85 (m, 4H), 5.94-5.86 (m, 1H), 5.40-5.24 (m, 2H), 4.74-4.49 (m, 1H), 4.12-4.09 (m, 2H), 3.79-3.47 (m, 10H), 2.78-2.59 (m, 2H), 1.14-0.93 (m, 12H). ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.67, 149.61, 149.32, 149.27.

Example 25. Synthesis of Monomer

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Preparation of (4): To the solution of 3 (14.3 g, 25.4 mmol, Scheme 2) in pyridine (150 mL) was added imidazole (4.5 g, 66.6 mmol) and TBSCl (6.0 g, 40.0 mmol) at 0° C., and the reaction mixture was stirred at room temperature for 15 h under N₂atmosphere. After addition of water, the resulting mixture was extracted with EA (500 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give the crude 4 (18.0 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 676 [M−H]⁻.

Preparation of (5): To the solution of crude 4 (18.0 g) in the solution of DCA (6%) in DCM (200 mL) was added TES (50 mL) at r.t, and the reaction mixture was stirred at room temperature for 5-10 min. After completion of reaction, the resulting mixture was added pyridine to pH=7, and then the solvent was removed and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 5 (6.5 g, 17.2 mmol, 67.7% for two step) as a white solid. ESI-LCMS: m/z 376 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.92 (d, J=8 Hz, 1H), 5.82 (d, J=5.2 Hz, 1H), 5.68-5.63 (m, 1H), 5.20-5.15 (m, 1H), 4.32-4.25 (m, 1H), 3.87-3.80 (m, 2H), 3.69-3.61 (m, 1H), 3.57-3.49 (m, 1H), 0.88 (s, 9H), 0.09 (s, 6H).

Preparation of (6): To the solution of 5 (6.5 g, 17.2 mmol) in dry DCM (35 mL) and DMF (9 mL) was added PDC (12.9 g, 34.3 mmol), tert-butyl alcohol (34 mL) and Ac₂O (17 mL) at r.t under N₂atmosphere. And the reaction mixture was stirred at r.t for 2 hrs. The solvent was removed to give a residue which was purified by silica gel column chromatography (eluent, PE:EA=4:1˜2:1) to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 6 (5.5 g, 12.3 mmol, 70.1%) as a white solid. ESI-LCMS: m/z 446 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ=11.29 (s, 1H), 7.91 (d, J=8.4 Hz, 1H), 5.85 (d, J=6.4 Hz, 1H), 5.71-5.61 (m, 1H), 4.35-4.28 (m, 1H), 4.12 (d, J=3.2 Hz, 1H), 3.75-3.67 (m, 1H), 1.33 (s, 9H), 0.76 (s, 9H), 0.00 (d, J=1.6 Hz, 6H).

Preparation of (7): To the solution of 6 (5.4 g, 12.1 mmol) in THF/MeOD/D₂O=10/2/1 (44 mL) was added NaBD₄(1.5 g, 36.3 mmol) at r.t. and the reaction mixture was stirred at 50° C. for 2 hrs. After completion of reaction, adjusted pH value to 7 with CH₃COOD. Water was added, the resulting mixture was extracted with EA (500 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 7 (2.6 g, 6.8 mmol, 56.1%) as a white solid. ESI-LCMS: m/z 378 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.35 (s, 1H), 7.91 (d, J=8.0 Hz, 1H), 5.82 (d, J=5.2 Hz, 1H), 5.69-5.60 (m, 1H), 5.14 (s, 1H), 4.34-4.20 (m, 1H), 3.88-3.76 (m, 2H), 0.87 (s, 9H), 0.08 (s, 6H).

Preparation of (8): To a stirred solution of 7 (2.6 g, 6.8 mmol) in pyridine (30 mL) were added DMTrCl (3.5 g, 10.3 mmol) at r.t. And the reaction mixture was stirred at r.t. for 2.5 hrs. With ice-bath cooling, the reaction was quenched with water and the product was extracted into EA (200 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 8 (4.3 g, 6.3 mmol, 90.1%) as a white solid. ESI-LCMS: m/z 678 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.39 (s, 1H), 7.86 (d, J=8.0 Hz, 1H), 7.42-7.17 (m, 9H), 6.96-6.83 (m, 4H), 5.82-5.69 (m, 2H), 5.29 (d, J=8.4 Hz, 1H), 4.36-4.25 (m, 1H), 3.90 (d, J=7.2 Hz, 1H), 3.86-3.80 (m, 1H), 3.73 (s, 6H), 0.75 (s, 9H), 0.02 (s, 3H), −0.04 (s, 3H).

Preparation of (9): To a solution of 8 (4.3 g, 6.3 mmol) in THF (45 mL) was added 1 M TBAF solution (6 mL). The reaction mixture was stirred at r.t. for 1.5 hrs. LCMS showed 8 was consumed completely. Water (200 mL) was added. The product was extracted with EA (200 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 8 (3.5 g, 6.1 mmol, 90.1%) as a white solid. ESI-LCMS: m/z 678 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.38 (d, J=2.0 Hz, 1H), 7.23 (d, J=8.0 Hz, 1H), 7.41-7.19 (m, 9H), 6.94-6.85 (m, 4H), 5.81 (d, J=4.0 Hz, 1H), 5.33-5.26 (m, 1H), 5.21 (d, J=7.2 Hz, 1H), 4.06-3.90 (m, 2H), 3.83-3.77 (m, 1H), 3.74 (s, 6H).

Preparation of Example 25 monomer: To a suspension of 9 (2.1 g, 3.7 mmol) in DCM (20 mL) was added DCI (373 mg, 3.1 mmol) and CEP[N(iPr)₂]₂(1.3 g, 4.4 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 9 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 25 monomer (2.2 g, 3.5 mmol, 80%) as a white solid. ESI-LCMS: m/z 766 [M+H]⁺; ¹H-NMR (400 MHz, ACN-d₃): δ 9.65-8.86 (m, 1H, exchanged with D₂O), 7.93-7.68 (m, 1H), 7.52-7.19 (m, 9H), 6.94-6.78 (m, 4H), 5.95-5.77 (m, 1H), 5.31-5.17 (m, 1H), 4.61-4.37 (m, 1H), 4.20-4.07 (m, 1H), 4.01-3.51 (m, 10H), 2.74-2.59 (m, 1H), 2.57-2.43 (m, 1H), 1.27-1.10 (m, 9H), 1.09-0.95 (m, 3H). ³¹P-NMR (162 MHz, ACN-d₃): δ=149.88, 149.55.

Example 26. Synthesis of Monomer

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Preparation of (7): To a solution of 6 (17 g, 25.1 mmol, Scheme 3) in ACN (170 mL) was added DMAP (6.13 g, 50.3 mmol) and TEA (5.1 g, 50.3 mmol, 7.2 mL), Then added TPSCl (11.4 g, 37.7 mmol) at 0° C. under N₂atmosphere and the mixture was stirred at r.t. for 3 h under N₂atmosphere. Then con. NH₃.H₂O (27.3 g, 233.7 mmol) was added at r.t. and the mixture was stirred at r.t. for 16 h. The reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was concentrated to give the crude 7 (17.0 g) as a white solid which was used directly for next step.

Preparation of (8): To a stirred solution of 7 (17.0 g, 25.1 mmol) in pyridine (170 mL) were added BzCl (4.3 g, 30.1 mmol) 0° C. under N₂atmosphere. And the reaction mixture was stirred at r.t for 2.5 h. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 8 (19.0 g, 24.3 mmol, 95.6% over two step) as a white solid. ESI-LCMS: m/z 780 [M+H]⁺.

Preparation of (9): To a solution of 8 (19.0 g, 24.3 mmol) in THF (190 mL) was added 1 M TBAF solution (24 mL). The reaction mixture was stirred at r.t. for 1.0 h. LC-MS showed 8 was consumed completely. Water (500 mL) was added. The product was extracted with EA (300 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 9 (15.2 g, 23.1 mmol, 95.5%) as a white solid. ESI-LCMS: m/z 666 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.28 (s, 1H), 8.41 (m, 1H), 8.00-7.99 (m, 2H), 7.63-7.15 (m, 13H), 6.93-6.89 (m, 4H), 5.87 (s, 1H), 5.20 (d, J=7.4 Hz, 1H), 4.30 (m, 1H), 4.02 (m, 1H), 3.75 (s, 7H), 3.53 (s, 3H).

Preparation of Example 26 monomer: To a suspension of 9 (10.0 g, 15.0 mmol) in DCM (100 mL) was added DCI (1.5 g, 12.7 mmol) and CEP[N(iPr)₂]₂(5.4 g, 18.0 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 9 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 26 monomer (11.5 g, 13.5 mmol, 90.7%) as a white solid. ESI-LCMS: m/z 866 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ=11.28 (s, 1H), 8.48-8.41 (m, 1H), 8.00-7.99 (m, 2H), 7.63-7.11 (m, 13H), 6.93-6.89 (m, 4H), 5.92 (m, 1H), 4.55-4.44 (m, 1H), 4.17 (m, 1H), 3.95 (m, 1H), 3.80-3.62 (m, 7H), 3.57-3.46 (m, 5H), 3.32 (s, 1H), 2.78 (m, 1H), 2.62-2.59 (m, 1H), 1.19-0.94 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ=149.52, 148.82.

Example 27. Synthesis of Monomer

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Preparation of (5): To the solution of 4 (18.8 g, Scheme 5) in dry ACN (200 mL) was added TPSCl (16.8 g, 65.2 mmol) and TEA (5.6 g, 65.2 mmol) and DMAP (6.8 g, 65.2 mmol), and the reaction mixture was stirred at room temperature for 3.5 hrs under N₂atmosphere. After addition of water, the resulting mixture was extracted with EA (300 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give the crude 5 (22.0 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 677 [M−H]⁺.

Preparation of (6): To a solution of 5 (22.0 g) in pyridine (150 mL) was added BzCl (6.8 g, 48.9 mmol) under ice bath. The reaction mixture was stirred at r.t. for 2.5 hrs. LCMS showed 5 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give the crude 6 (20.8 g, 26.7 mmol, 82% yield over two steps) as a white solid. ESI-LCMS: m/z 781 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.30 (s, 1H), 8.55 (d, J=8.0 Hz, 1H), 8.00-7.98 (m, 2H), 7.74-7.66 (m, 1H), 7.60-7.50 (m, 2H), 7.47-7.31 (m, 4H), 7.30-7.2 (m, 5H), 7.20-7.1 (m, 1H), 6.91 (d, J=7.4 Hz, 4H), 5.91-5.86 (AB, J=20.0 Hz, 1H), 4.30 (d, J=8.0 Hz, 1H), 3.87-3.78 (s, 1H), 3.78-3.70 (m, 6H), 3.62-3.51 (m, 1H), 3.28-3.2 (m, 1H), 2.15-2.05 (m, 3H), 0.73 (s, 9H), 0.00 (m, 6H).

Preparation of (7): To a solution of 6 (20.8 g, 26.7 mmol) in THF (210 mL) was added 1 M TBAF solution (32 mL). The reaction mixture was stirred at r.t. for 1.5 hrs. LCMS showed 6 was consumed completely. Water (600 mL) was added. The product was extracted with EA (400 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 7 (12.4 g, 18.6 mmol, 70%) as a white solid. ESI-LCMS: m/z 667 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.03 (m, 1H), 8.51-8.48 (m, 1H), 8.08-7.95 (m, 2H), 7.63-7.54 (m, 1H), 7.52-7.19 (m, 9H), 7.16-7.07 (m, 1H), 6.94-6.89 (m, 3H), 5.95-5.87 (m, 1H), 5.31-5.17 (m, 1H), 4.61-4.37 (m, 1H), 4.20-4.07 (m, 1H), 3.82-3.47 (m, 7H), 2.57-2.42 (m, 2H).

Preparation of Example 27 monomer: To a suspension of 7 (12.4 g, 18.6 mmol) in DCM (120 mL) was added DCI (1.7 g, 15.8 mmol) and CEP[N(iPr)₂]₂(7.3 g, 24.2 mmol). The mixture was stirred at r.t. for 2 hrs. LC-MS showed 7 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 27 monomer (13.6 g, 15.7 mmol, 84.0%) as a white solid. ESI-LCMS: m/z 867 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.03 (m, 1H), 8.51-8.48 (m, 1H), 8.08-7.95 (m, 2H), 7.63-7.54 (m, 1H), 7.52-7.19 (m, 9H), 7.16-7.07 (m, 1H), 6.94-6.89 (m, 3H), 5.95-5.87 (m, 1H), 5.31-5.17 (m, 1H), 4.61-4.37 (m, 1H), 4.20-4.07 (m, 1H), 3.82-3.47 (m, 10H), 2.74-2.59 (m, 1H), 2.57-2.43 (m, 1H), 1.27-1.10 (m, 9H), 1.09-0.95 (m, 3H). ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.59, 148.85.

Example 28. Synthesis of Monomer

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Preparation of (4): To a solution of 3 (13.1 g, 35.2 mmol, Scheme 3) in pyridine (130 mL) was added MsCl (4.8 g, 42.2 mmol) under −10˜0° C. The reaction mixture was stirred at r.t. for 2.5 h under N₂atmosphere. TLC (DCM/MeOH=15:1) showed the reaction was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. This resulted in to give the product 4 (14.2 g) which was used directly for the next step. ESI-LCMS: m/z 451 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 11.43 (m, 1H), 7.67-7.65 (m, 1H), 5.90-5.80 (m, 1H), 5.75-5.64 (m, 1H), 4.52-4.21 (m, 3H), 4.12-3.90 (m, 2H), 3.48-3.21 (m, 6H), 0.95-0.78 (s, 9H), 0.13-0.03 (s, 6H).

Preparation of (5): To a solution of 4 (14.2 g) in DMSO (200 mL) was added DMTrSH (19.6 g, 63.2 mmol) and tetramethylguanidine (5.1 g, 47.4 mmol) at r.t. The reaction mixture was stirred at r.t. for 3.5 h under N₂atmosphere. LCMS showed 4 the reaction was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by silica gel column (SiO₂, PE/EA=10:1˜1:1) to give 5 (14.2 g, 20.6 mmol, 58.5% yield over two steps) as a white solid. ESI-LCMS: m/z 689 [M+H]⁻; ¹H-NMR (400 MHz, DMSO-d₆) δ 11.39 (m, 1H), 7.63-7.61 (d, J=8.0 Hz, 1H), 7.45-7.1 (m, 9H), 6.91-6.81 (m, 4H), 5.80-5.70 (m, 2H), 4.01-3.91 (m, 1H), 3.85-3.78 (m, 1H), 3.78-3.65 (m, 6H), 3.60-3.51 (m, 1H), 3.43-3.2 (m, 3H), 2.50-2.32 (m, 2H), 0.95-0.77 (s, 9H), −0.00-0.02 (s, 6H).

Preparation of (6): To a solution of 5 (14.2 g, 20.6 mmol) in THF (140 mL) was added 1 M TBAF solution (20 mL). The reaction mixture was stirred at r.t. under N₂atmosphere for 2.5 h. LCMS showed 5 was consumed completely. Water was added. The product was extracted with EA and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 6 (10.5 g, 18.2 mmol, 88.5%) as a white solid. ESI-LCMS: m/z 576 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 11.38 (m, 1H), 7.56-7.54 (d, J=8.0 Hz, 1H), 7.45-7.1 (m, 9H), 6.91-6.81 (m, 4H), 5.80-5.70 (m, 2H), 4.05-4.00 (m, 1H), 3.81-3.79 (m, 1H), 3.74 (m, 2H), 3.78-3.65 (m, 6H), 3.60-3.51 (m, 1H), 3.43-3.2 (m, 3H), 2.40-2.32 (m, 1H).

Preparation of Example 28 monomer: To a suspension of 9 (10.5 g, 18.2 mmol) in DCM (100 mL) was added DCI (1.7 g, 15.5 mmol) and CEP[N(iPr)₂]₂(7.2 g, 23.7 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 9 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 28 monomer (12.5 g, 16.1 mmol, 88%) as a white solid. ESI-LCMS: m/z 776 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 11.41 (m, 1H), 7.64-7.59 (m, 1H), 7.40-7.25 (m, 4H), 7.25-7.10 (m, 5H), 6.89-6.86 (m, 4H), 5.72-5.67 (m, 2H), 4.02-4.00 (m, 2H), 3.76-3.74 (m, 8H), 3.74-3.73 (m, 3H), 3.51-3.49 (d, J=8 Hz, 1H), 3.33-3.29 (m, 1H), 2.77-2.73 (m, 1H), 2.63-2.60 (m, 1H), 2.50-2.47 (m, 1H), 1.12-0.99 (m, 12H). ³¹P-NMR (162 MHz, DMSO-d₆): δ 148.92, 148.84.

Example 29. Synthesis of Monomer

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Preparation of (7): To a solution of 6 (16 g, 24.1 mmol, Scheme 4) in ACN (160 mL) was added DMAP (5.9 g, 48.2 mmol) and TEA (4.8 g, 48.2 mmol), then added TPSCl (10.9 g, 36.1 mmol) at 0° C. under N₂atmosphere and the mixture was stirred at r.t. for 5 hrs under N₂atmosphere. Then con. NH₃.H₂O (30 mL) was added at r.t. and the mixture was stirred at r.t. for 16 h. The reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was concentrated to give the crude 7 (16.0 g) as a white solid which was used directly for next step.

Preparation of (8): To a stirred solution of 7 (16.0 g, 24.1 mmol) in pyridine (160 mL) were added BzCl (4.1 g, 28.9 mmol) 0° C. under N₂atmosphere. And the reaction mixture was stirred at r.t. for 2.5 h. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 8 (18.0 g, 23.4 mmol, 97.0%) as a white solid. ESI-LCMS: m/z 768 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.31 (s, 1H), 8.47 (d, J=7.2 Hz, 1H), 7.99 (d, J=7.6 Hz, 2H), 7.65-7.16 (m, 13H), 6.92 (d, J=8.8 Hz, 4H), 6.01 (d, J=18.4 Hz, 1H), 5.18-5.04 (dd, 1H), 4.58-4.52 (m, 1H), 4.07 (d, J=9.6 Hz, 1H), 3.75 (s, 6H), 0.73 (s, 9H), 0.05 (s, 3H), −0.06 (s, 3H).

Preparation of (9): To a solution of 8 (18.0 g, 23.4 mmol) in THF (180 mL) was added 1 M TBAF solution (23 mL). The reaction mixture was stirred at r.t. for 1.5 h. LC-MS showed 8 was consumed completely. Water (500 mL) was added. The product was extracted with EA (300 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 7 (13.7 g, 21.1 mmol, 90.5%) as a white solid. ESI-LCMS: m/z 654.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.31 (s, 1H), 8.35 (d, J=7.4 Hz, 1H), 8.01 (m, 2H), 7.65-7.16 (m, 13H), 6.92 (d, J=8.8 Hz, 4H), 5.94 (d, J=18.0 Hz, 1H), 5.71 (d, J=7.0 Hz, 1H), 5.12-4.98 (dd, 1H), 4.51-4.36 (m, 1H), 4.09 (d, J=9.6 Hz, 1H), 3.75 (s, 6H).

Preparation of Example 29 monomer: To a suspension of 9 (10.6 g, 16.2 mmol) in DCM (100 mL) was added DCI (1.6 g, 13.7 mmol) and CEP[N(iPr)₂]₂(5.8 g, 19.4 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 9 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 29 monomer (10.5 g, 14.5 mmol, 75.9%) as a white solid. ESI-LCMS: m/z 854.3 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.31 (s, 1H), 8.41-8.37 (m, 1H), 8.01 (d, J=7.7 Hz, 2H), 7.65-7.16 (m, 13H), 6.92-6.88 (m, 4H), 6.06-5.98 (m, 1H), 5.33-5.15 (m, 1H), 4.78-4.58 (m, 1H), 4.23-4.19 (m, 1H), 3.81-3.73 (m, 6H), 3.60-3.50 (m, 3H), 3.32 (s, 1H), 2.76 (t, J=6.0 Hz, 1H), 2.60 (t, J=5.8 Hz, 1H), 1.15-0.94 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 150.23, 150.18, 149.43, 149.38.

Example 30. Synthesis of Monomer

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Preparation of (9): To a solution of 8 (18.8 g, 26.4 mmol, Scheme 5) in ACN (200 mL) was added TPSCl (16.8 g, 55.3 mmol) and DMAP (5.6 g, 55.3 mmol) and TEA (6.8 g, 55.3 mmol). The reaction mixture was stirred at r.t. for 3.5 hrs. LCMS showed the reaction was consumed. The mixture was diluted with con. NH₄OH (28 mL). The mixture was diluted with water and EA. The product was extracted with EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude 9 (18.5 g) which was used directly for the next step.

Preparation of (10): To a solution of 9 (18.8 g, 27.69 mmol) in pyridine (200 mL) was added BzCl (5.8 g, 41.5 mmol) under ice bath. The reaction mixture was stirred at r.t. for 2.5 hrs. LCMS showed 9 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 10 (19.8 g, 25.3 mmol, 91% yield) as a white solid. ESI-LCMS: m/z 783 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.29 (d, J=2.0 Hz, 1H), 8.42 (d, J=8.0 Hz, 1H), 8.02-8.00 (m, 2H), 7.64-7.62 (m, 1H), 7.60-7.41 (m, 2H), 7.47.41-7.19 (m, 9H), 6.94-6.85 (m, 4H), 5.81 (d, J=4.0 Hz, 1H), 5.33-5.26 (m, 1H), 5.21 (d, J=7.2 Hz, 1H), 4.06-3.90 (m, 2H), 3.83-3.77 (m, 1H), 3.74 (s, 6H).

Preparation of (11): To a solution of 10 (18.8 g, 26.4 mmol) in THF (190 mL) was added 1 M TBAF solution (28 mL). The reaction mixture was stirred at r.t. for 1.5 hrs. LCMS showed 10 was consumed completely. Water (200 mL) was added. The product was extracted with EA (200 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 11 (17.1 g, 25.6 mmol, 96%) as a white solid. ESI-LCMS: m/z 669 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.29 (d, J=2.0 Hz, 1H), 8.42 (d, J=8.0 Hz, 1H), 8.02-8.00 (m, 2H), 7.64-7.62 (m, 1H), 7.60-7.41 (m, 2H), 7.47.41-7.19 (m, 9H), 6.94-6.85 (m, 4H), 5.81 (d, J=4.0 Hz, 1H), 5.33-5.26 (m, 1H), 5.21 (d, J=7.2 Hz, 1H), 4.06-3.90 (m, 2H), 3.83-3.77 (m, 1H), 3.74 (s, 6H).

Preparation of Example 30 monomer: To a suspension of 11 (10.8 g, 16.2 mmol) in DCM (100 mL) was added DCI (1.5 g, 13.7 mmol) and CEP[N(iPr)₂]₂(5.8 g, 19.3 mmol). The mixture was stirred at r.t. for 2 hrs. LC-MS showed 11 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 30 monomer (11.3 g, 13 mmol, 80%) as a white solid. ESI-LCMS: m/z 868 [M+H]⁺; H-NMR (400 MHz, DMSO-d₆): δ 11.03 (m, 1H), 8.51-8.48 (m, 1H), 8.08-7.95 (m, 2H), 7.63-7.54 (m, 1H), 7.52-7.19 (m, 9H), 7.16-7.07 (m, 1H), 6.94-6.89 (m, 3H), 5.95-5.87 (m, 1H), 5.31-5.17 (m, 1H), 4.61-4.37 (m, 1H), 4.20-4.07 (m, 1H), 3.82-3.47 (m, 10H), 2.74-2.59 (m, 1H), 2.57-2.43 (m, 1H), 1.27-1.10 (m, 9H), 1.09-0.95 (m, 3H). ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.52, 148.81.

Example 31. Synthesis of Monomer

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Preparation of (2): To a stirred solution of 1 (100.0 g, 406.5 mmol) in pyridine (1000 mL) were added DMTrCl (151.2 g, 447.1 mmol) at r.t. And the reaction mixture was stirred at r.t. for 2.5 hrs. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (3000 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by silica gel column chromatography (SiO₂, dichloromethane:methanol=100:1) to give 2 (210.0 g, 90%) as a white solid. ESI-LCMS: m/z 548.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.43 (d, J=1.8 Hz, 1H), 7.77 (d, J=8.0 Hz, 1H), 7.40-7.21 (m, 9H), 6.92-6.88 (m, 4H), 5.89 (d, J=20.0 Hz, 1H), 5.31-5.29 (m, 1H), 5.19-5.04 (dd, 1H), 4.38-4.31 (m, 1H), 4.02-3.98 (m, 1H), 3.74 (s, 6H), 3.30 (d, J=3.2 Hz, 2H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−199.51.

Preparation of (3): To a stirred solution of 2 (100.0 g, 182.8 mmol) in pyridine (1000 mL) were added MsCl (31.2 g, 274.2 mmol) at 0° C. under N₂atmosphere. And the reaction mixture was stirred at r.t for 2.5 h. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was evaporated to dryness under reduced pressure to give the crude (114.0 g) as a white solid which was used directly for next step. To the solution of the crude (114.0 g, 187.8 mmol) in DMF (2000 mL) was added K₂CO₃(71.5 g, 548.4 mmol), and the reaction mixture was stirred at 90° C. for 15 h under N₂atmosphere. After addition of water, the resulting mixture was extracted with EA (500 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by silica gel column chromatography (SiO₂, dichloromethane:methanol=30:1) to give 3 (100.0 g, 90%) as a white solid. ESI-LCMS: m/z 531.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.79 (d, J=8.0 Hz, 1H), 7.40-7.21 (m, 9H), 6.89-6.83 (m, 4H), 6.14 (d, J=5.4 Hz, 1H), 6.02-5.90 (dd, 1H), 5.87 (d, J=20.0 Hz, 1H), 5.45 (m, 1H), 4.61 (m, 1H), 3.73 (d, J=1.9 Hz, 6H), 3.30-3.15 (m, 2H), 1.24-1.16 (m, 1H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−204.23.

Preparation of (4): A solution of 3 (100 g, 187.8 mmol) in THF (1000 mL) was added 6N NaOH (34 mL, 206.5 mmol). The mixture was stirred at r.t. for 6 h. After completion of reaction, the resulting mixture was added H₂O, and then the mixture was extracted with EA, the organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by silica gel column chromatography (SiO₂, dichloromethane:methanol=30:1) to give 4 (90.4 g, 90%) as a white solid. ESI-LCMS: m/z 548.2 [M+H]⁺; ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−184.58.

Preparation of (5): To a stirred solution of 4 (90.4 g, 165.2 mmol) in pyridine (1000 mL) were added MsCl (61.5 g, 495.6 mmol) at 0° C. under N₂atmosphere. And the reaction mixture was stirred at r.t for 16 hrs. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA. the organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by silica gel column chromatography (SiO₂, PE:EA=1:1) to give 5 (75.0 g, 90%) as a white solid. ESI-LCMS: m/z 626.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.51 (d, J=1.6 Hz, 1H), 7.43-7.23 (m, 10H), 6.92-6.88 (m, 4H), 6.08 (d, J=20.0 Hz, 1H), 5.55-5.39 (m, 2H), 4.59 (m, 1H), 3.74 (s, 6H), 3.48-3.28 (m, 2H), 3.17 (s, 3H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−187.72.

Preparation of (6): To the solution of 5 (75.0 g, 120.4 mmol) in DMF (1500 mL) was added KSAc (71.5 g, 548.4 mmol) at 110° C. under N₂atmosphere, After the reaction mixture was stirred at 110° C. for 3 h were added KSAc (71.5 g, 548.4 mmol) under N₂atmosphere. And the reaction mixture was stirred at r.t for 16 h. After addition of water, the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by silica gel column chromatography (SiO₂, PE:EA=1:1) to give 6 (29.0 g, 90%) as a white solid. ESI-LCMS: m/z 605.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.45 (d, J=1.9 Hz, 1H), 7.95 (d, J=8.0 Hz, 1H), 7.38-7.21 (m, 9H), 6.92-6.87 (m, 4H), 5.93 (m, 1H), 5.50-5.36 (dd, 1H), 5.25-5.23 (dd, 1H), 4.54-4.42 (m, 1H), 4.17-4.12 (m, 1H), 3.74 (m, 7H), 3.35-3.22 (m, 2H), 2.39 (s, 1H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−181.97.

Preparation of (7): A solution of 6 (22 g, 36.3 mmol) in a mixture solvent of THF/MeOH (1:1, 200 mL) was added 1N NaOMe (70 mL, 72.6 mmol) was stirred at 20° C. for 4 h. After completion of reaction, the resulting mixture was added H₂O, and then the mixture was extracted with EA, the organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=4/3; Detector, UV 254 nm. This resulted in to give 7 (10.5 g, 14.5 mmol, 75.9%) as a white solid. ESI-LCMS: m/z 565.1 [M+]H⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.45 (s, 1H), 7.83 (d, J=8.0 Hz, 1H), 7.40-7.23 (m, 9H), 6.90 (d, J=8.8 Hz, 4H), 5.88 (m, 1H), 5.29-5.15 (m, 2H), 3.72 (m, 7H), 3.43 (m, 2H), 2.78 (d, J=10.6 Hz, 1H).

Preparation of Example 31 monomer: To a suspension of 7 (10.5 g, 18.6 mmol) in DCM (100 mL) was added DCI (1.8 g, 15.7 mmol) and CEP[N(iPr)₂]₂(6.7 g, 22.3 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 8 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 31 monomer (10.5 g, 14.5 mmol, 75.9%) as a white solid. ESI-LCMS: m/z 765.3 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.40 (d, J=12.2 Hz, 1H), 7.90-7.86 (m, 1H), 7.41-7.24 (m, 9H), 6.91-6.89 (m, 4H), 5.97 (m, 1H), 5.33-5.10 (m, 2H), 4.18-4.16 (m, 1H), 3.91-3.39 (m, 17H), 2.81 (t, J=5.6 Hz, 1H), 2.66 (t, J=6.0 Hz, 1H), 1.33-0.97 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 164.57, 160.13.

Example 32. Synthesis of Monomer

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Preparation of (2): To a stirred solution of 1 (100.0 g, 387.5 mmol) in pyridine (1000 mL) was added DMTrCl (151.2 g, 447.1 mmol) at r.t. And the reaction mixture was stirred at r.t. for 2.5 hrs. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (3000 mL). The organic phase was evaporated to dryness under reduced pressure to give a residue which was purified by silica gel column chromatography (SiO₂, dichloromethane:methanol=100:1) to give 2 (200.0 g, 90%) as a white solid. ESI-LCMS: m/z 561 [M+H]⁺.

Preparation of (3): To a stirred solution of 2 (730.0 g, 1307.3 mmol) in pyridine (730 mL) were added MsCl (19.5 g, 169.2 mmol) at 0° C. und N₂atmosphere. And the reaction mixture was stirred at r.t for 2.5 h. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA (200 mL). The organic phase was evaporated to dryness under reduced pressure to give the crude (80.0 g) as a white solid which was used directly for next step. To the solution of the crude (8.0 g, 130.3 mmol) in n DMF (1600 mL) was added K₂CO₃(71.5 g, 390.9 mmol), and the reaction mixture was stirred at 90° C. for 15 h under N₂atmosphere. After addition of water, the resulting mixture was extracted with EA (500 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by silica gel column chromatography (SiO₂, dichloromethane:methanol=30:1) to give 3 (55.0 g, 90%) as a white solid. ESI-LCMS: m/z 543. [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.68 (d, J=8.0 Hz, 1H), 7.40-7.21 (m, 9H), 6.89-6.83 (m, 4H), 5.96 (s, 1H), 5.83 (d, J=5.4 Hz, 1H), 5.26 (s, 1H), 4.59 (s, 1H), 4.46 (t, J=6.0 Hz, 1H), 3.72 (s, 6H), 3.44 (s, 3H), 3.18-3.12 (m, 2H).

Preparation of (4): A solution of 3 (55 g, 101.8 mmol) in THF (550 mL) was added 6N NaOH (34 mL, 206.5 mmol). The mixture was stirred at 20° C. for 6 hrs. After completion of reaction, the resulting mixture was added H₂O, and then the mixture was extracted with EA, the organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by silica gel column chromatography (SiO₂, dichloromethane:methanol=30:1) to give 4 (57.4 g, 87%) as a white solid. ESI-LCMS: m/z 561 [M+H]⁺.

Preparation of (5): To a stirred solution of 4 (57.4 g, 101.8 mmol) in pyridine (550 mL) were added MsCl (61.5 g, 495.6 mmol) at 0° C. under N₂atmosphere. And the reaction mixture was stirred at r.t for 16 h. With ice-bath cooling, the reaction was quenched with water and the product was extracted with EA. the organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by silica gel column chromatography (SiO₂, PE:EA=1:1) to give 5 (57.0 g, 90%) as a white solid. ESI-LCMS: m/z 639 [M+H]⁺.

Preparation of (6): To the solution of 5 (57.0 g, 89.2 mmol) in DMF (600 mL) was added KSAc (71.5 g, 448.4 mmol) at 110° C. under N₂atmosphere, After the reaction mixture was stirred at 110° C. for 3 h were added KSAc (71.5 g, 448.4 mmol) under N₂atmosphere. And the reaction mixture was stirred at r.t for 16 h. After addition of water, the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give a residue which was purified by silica gel column chromatography (SiO₂, PE:EA=1:1) to give 6 (29.0 g, 47%) as a white solid. ESI-LCMS: m/z 619.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.41 (s, 1H), 8.06 (s, 1H), 7.40-7.23 (m, 9H), 6.90 (d, J=8.8 Hz, 4H), 5.82 (s, 1H), 5.10-5.08 (dd, 1H), 4.38-4.34 (m, 1H), 4.08-4.02 (m, 3H), 3.74 (s, 6H), 3.45 (s, 3H), 3.25 (m, 2H), 2.37 (s, 3H); ESI-LCMS: m/z 619 [M+H]⁺.

Preparation of (7): A solution of 6 (22 g, 35.3 mmol) in a mixture solvent of THF/MeOH (1:1, 200 mL) was added 1N NaOMe (70 mL, 72.6 mmol) was stirred at 20° C. for 4 h. After completion of reaction, the resulting mixture was added H₂O, and then the mixture was extracted with EA, the organic layer was washed with brine, dried over sodium sulfate and removed to give the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=4/3; Detector, UV 254 nm. This resulted in to give 7 (14.0 g, 70.9%) as a white solid. ESI-LCMS: m/z 576.1 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.38 (s, 1H), 7.90 (d, J=8.0 Hz, 1H), 7.40-7.23 (m, 9H), 6.90 (d, J=8.8 Hz, 4H), 5.80 (s, 1H), 5.15-5.13 (dd, 1H), 3.93 (m, 1H), 3.87 (d, J=5.0 Hz, 1H), 3.74 (s, 6H), 3.59 (m, 2H), 3.49 (s, 3H), 3.39 (d, J=2.2 Hz, 2H), 2.40 (d, J=10.2 Hz, 1H).

Preparation of Example 32 monomer: To a suspension of 7 (10.5 g, 18.6 mmol) in DCM (100 mL) was added DCI (1.8 g, 15.7 mmol) and CEP[N(iPr)₂]₂(6.7 g, 22.3 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 7 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 32 monomer (10.5 g, 14.5 mmol, 75.9%) as a white solid. ESI-LCMS: m/z 776.3 [M+H]⁺, ¹H-NMR (400 MHz, DMSO-d₆): δ 11.40 (d, J=12.2 Hz, 1H), 8.04-7.96 (dd, 1H), 7.43-7.24 (m, 9H), 6.92-6.87 (m, 4H), 5.84 (m, 1H), 4.93 (m, 1H), 4.13 (m, 1H), 3.91-3.39 (m, 17H), 2.82 (t, J=5.6 Hz, 1H), 2.68 (t, J=6.0 Hz, 1H), 1.22-0.97 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 165.06, 157.59.

Example 33. Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (11.2 g, 24.7 mmol) in DCM (120 mL), imidazole (4.2 g, 61.9 mmol) and TBSCl (5.6 g, 37.1 mmol) were added at r.t., mixture was stirred at r.t. for 15 hrs, LCMS showed 1 was consumed completely. Mixture was added water (500 mL) and extracted with DCM (50 mL*2). The organic phase was dried over Na₂SO₄and concentrated to give 2 (16.0 g) as an oil for the next step.

Preparation of (3): To a solution of 2 (16.0 g, 28.4 mmol) was added 6% DCA in DCM (160 mL) and triethylsilane (40 mL) at r.t. The reaction mixture was stirred at r.t. for 2 hrs. TLC showed 2 was consumed completely. Water (300 mL) was added, mixture was extracted with DCM (50 mL*4), organic phase was dried by Na₂SO₄, concentrated by reduce pressure to give crude which was purified by column chromatography (SiO₂, PE/EA=10:1 to 1:1) to give 3 (4.9 g, 65.9% yield) as an oil. ESI-LCMS: m/z 263 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 4.84-4.50 (m, 1H), 4.3-4.09 (m, 1H), 3.90-3.80 (m, 1H), 3.75-3.67 (m, 1H), 3.65-3.57 (m, 2H), 3.50-3.44 (m, 1H), 3.37-3.28 (m, 4H), 0.95-0.78 (s, 9H), 0.13-0.03 (s, 6H).

Preparation of (4): To a solution of 3 (3.3 g, 12.6 mmol) in DMSO (33 mL) was added EDCI (7.2 g, 37.7 mmol). The mixture was added pyridine (1.1 g, 13.8 mmol) and TFA (788.6 mg, 6.9 mmol). The reaction mixture was stirred at r.t. for 3 hrs. TLC (PE/EA=4:1) showed 3 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. This resulted in to give 4 (3.23 g) as an oil for the next step.

Preparation of (5): To a solution of 4 (3.3 g, 12.6 mmol) in toluene (30 mL) was added POM ester 4a (reference for 4a Journal of Medicinal Chemistry, 2018, 61 (3), 734-744) (7.9 g, 12.6 mmol) and KOH (1.3 g, 22.6 mmol) at r.t. The reaction mixture was stirred at 40° C. for 8 hrs. LCMS showed 4 was consumed. The mixture was diluted with water and EA was added. The product was extracted with EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=91/9 Detector, UV 254 nm. This resulted in to give 5 (5.4 g, 9.5 mmol, 75.9% yield) as an oil. ESI-LCMS: m/z 567.2 [M+H]⁺; ¹H-NMR (400 MHz, CDCl₃) δ 6.89-6.77 (m, 1H), 6.07-5.96 (m, 1H), 5.86-5.55 (m, 4H), 4.85-4.73 (m, 1H), 4.36-4.27 (m, 1H), 4.05-3.96 (m, 1H), 3.95-3.85 (m, 1H), 3.73-3.65 (m, 1H), 3.44-3.35 (m, 3H), 1.30-1.25 (s, 18H), 0.94-0.84 (s, 9H), 0.14-0.05 (s, 6H). ³¹P-NMR (162 MHz, CDCl₃) δ 18.30, 15.11.

Preparation of (6): To a solution of 5 (5.4 g, 9.5 mmol) in HCOOH (30 mL)/H₂O (30 mL)=1:1 at r.t. The reaction mixture was stirred at r.t. for 15 hrs. LCMS showed the reaction was consumed. The mixture was diluted with con. NH₄OH till pH=7.5. The product was extracted with EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% HCOOH)=30/70 increasing to CH₃CN/H₂O (0.5% HCOOH)=70/30 within 45 min, the eluted product was collected at CH₃CN/H₂O (0.5% HCOOH)=59/41 Detector, UV 220 nm. This resulted in to give 6 (2.4 g, 5.7 mmol, 59.4% yield) as an oil. ESI-LCMS: m/z 453.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 6.84-6.68 (m, 1H), 6.07-5.90 (m, 1H), 5.64-5.55 (m, 4H), 5.32-5.24 (m, 1H), 4.23-4.15 (m, 1H), 4.00-3.90 (m, 1H), 3.89-3.80 (m, 1H), 3.78-3.69 (m, 2H), 3.37-3.30 (s, 3H), 1.30-1.10 (s, 18H). ³¹P-NMR (162 MHz, DMSO-d₆) δ 18.14.

Preparation of Example 33 monomer: To a solution of 6 (2.1 g, 4.5 mmol) in DCM (21 mL) were added DCI (452.5 mg, 3.8 mmol) and CEP[N(iPr)₂]₂(1.8 g, 5.9 mmol) at r.t. The reaction mixture was stirred at r.t. for 15 hrs under N₂atmosphere. LCMS showed 6 was consumed. The mixture was diluted with water. The product was extracted with DCM (30 mL). The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 28 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=80/20 Detector, UV 254 nm. This resulted in to give Example 33 monomer (2.8 g, 4.3 mmol, 95.2% yield) as an oil. ESI-LCMS: m/z 653.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 6.89-6.77 (m, 1H), 6.11-5.96 (m, 1H), 5.65-5.50 (m, 4H), 4.39-4.34 (d, J=20 Hz, 1H), 4.18-3.95 (m, 2H), 3.94-3.48 (s, 6H), 3.40-3.28 (m, 4H), 2.84-2.75 (m, 2H), 1.26-1.98 (s, 30H). ³¹P-NMR (162 MHz, DMSO-d₆) δ 149.018, 148.736, 17.775, 17.508.

Example 34. Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (ref for 1 Tetrahedron, 2013, 69, 600-606) (10.60 g, 47.32 mmol) in DMF (106 mL), imidazole (11.26 g, 165.59 mmol) and TBSCl (19.88 g, 132.53 mmol) were added. The mixture was stirred at r.t. for 3.5 hrs, LCMS showed 1 was consumed completely. Water was added and extracted with EA, dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give 2 (20.80 g, 45.94 mmol, 97.19% yield) for the next step.

Preparation of (3): To a solution of 2 (20.80 g, 45.94 mmol) in THF (248 mL), was added TFA (124 mL) and H₂O (124 mL) at 0° C., reaction mixture was stirred for 30 min. LCMS showed 2 was consumed completely. Then was extracted with EA, washed with sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 3 (10.00 g, 29.59 mmol, 64.31% yield). ¹H-NMR (400 MHz, DMSO-d₆): δ 7.33-7.18 (m, 5H), 4.83-4.80 (m, 1H), 4.61-4.59 (m, 1H), 4.21-4.19 (m, 1H), 3.75-3.74 (m, 1H), 3.23 (m, 3H), 3.13 (m, 3H), 2.41-2.40 (m, 1H), 0.81 (m, 9H), 0.00 (m, 6H).

Preparation of (4): To a solution of 3 (3.70 g, 10.95 mmol) in DMSO (37 mL) was added EDCI (6.30 g, 32.84 mmol). Then pyridine (0.95 g, 12.05 mmol) and TFA (0.69 g, 6.02 mmol) was added in N₂atmosphere. The mixture was stirred for 3 hrs at r.t. LCMS showed 3 was consumed completely. Water was poured into and extracted with EA, washed with sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was directly used for next step.

Preparation of (5): To a solution of 4 in toluene (100.00 mL), was added 4a (6.93 g, 10.97 mmol) and KOH (1.11 g, 19.78 mmol). It was stirred for 3.5 hrs at 40° C. in N₂atmosphere. TLC and LCMS showed 4 was consumed completely. Then was extracted with EA, washed with water and sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 5 (4.30 g, 6.70 mmol, 61.17% yield). ¹H-NMR (400 MHz, CDCl₃): δ 7.27-7.26 (m, 4H), 7.17 (m, 1H), 6.94-6.82 (m, 1H), 6.13-6.02 (m, 1H), 5.63-5.56 (m, 4H), 4.90-4.89 (m, 1H), 4.45-4.41 (m, 1H), 3.98-3.95 (m, 1H), 3.39-3.29 (m, 4H), 1.90 (m, 1H), 1.12-0.83 (m, 29H), 0.00 (m, 7H); ³¹P-NMR (162 MHz, CDCl₃): δ 18.021, 14.472.

Preparation of (6): To a solution of 5 (4.30 g, 6.70 mmol) in THF (43.00 mL) was added HCOOH (100 mL) and H₂O (100 mL). It was stirred overnight at r.t. LCMS showed 5 was consumed completely. NH₄OH was poured into it and was extracted with EA, washed with sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 6 (2.10 g, 3.98 mmol, 59.32% yield). ¹H-NMR (400 MHz, CDCl₃): δ 7.40-7.28 (m, 5H), 7.11-7.00 (m, 1H), 6.19-6.14 (m, 1H), 5.71-5.68 (m, 4H), 4.95-4.94 (m, 1H), 4.48-4.47 (m, 1H), 4.05-4.03 (m, 1H), 3.62-3.61 (m, 1H), 3.46 (m, 3H), 3.00-2.99 (m, 1H), 1.22 (m, 18H); ³¹P-NMR (162 MHz, CDCl₃): δ 18.134.

Preparation of Example 34 monomer: To a solution of 6 (2.10 g, 3.98 mmol) in DCM (21 mL) was added DCI (410 mg, 3.47 mmol). CEP (1.40 g, 4.65 mmol) was added in a N₂atmosphere. LCMS showed 6 was consumed completely. DCM and H₂O was poured, the organic phase was washed with water and sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure at 40° C. to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 34 monomer (2.10 g, 2.88 mmol). ¹H-NMR (400 MHz, DMSO-d₆): δ 7.39-7.32 (m, 6H), 6.21-6.11 (m, 1H), 5.64-5.61 (m, 4H), 4.91-4.85 (m, 1H), 4.59 (m, 1H), 4.28-4.25 (m, 1H), 3.84-3.60 (m, 5H), 3.36-3.36 (m, 2H), 2.83-2.79 (m, 2H), 1.18-1.14 (m, 29H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.588, 148.920, 17.355, 17.010.

Example 35. Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (5.90 g, 21.50 mmol) in DMF (60.00 mL), imidazole (4.39 g, 64.51 mmol) and TBSCl (7.63 g, 49.56 mmol) were added. The mixture was stirred at r.t. for 3.5 hrs, LCMS showed 1 was consumed completely. Water was added and extracted with EA, dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give 2 (11.00 g, 21.91 mmol, 98.19% yield) for the next step. ESI-LCMS: m/z 225.1 [M+H]⁺.

Preparation of (3): To a solution of 2 (11.00 g, 21.91 mmol) in THF (55.00 mL) was added TFA (110.00 mL) and H₂O (55.00 mL) at 0° C., reaction mixture was stirred for 30 min. LCMS showed 2 was consumed completely. Then was extracted with EA, washed with sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 3 (6.20 g, 16.32 mmol, 72.94% yield). ESI-LCMS: m/z 411.2 [M+H]⁺.

Preparation of (4): To a solution of 3 (3.50 g, 9.02 mmol) in DMSO (35.00 mL) was added EDCI (5.19 g, 27.06 mmol). Then pyridine (0.78 g, 9.92 mmol) and TFA (0.57 g, 4.96 mmol) was added in N₂atmosphere. The mixture was stirred for 3 h at r.t. Water was poured into it and was extracted with EA, washed with sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was directly used for next step. ESI-LCMS: m/z 406.2 [M+H]⁺.

Preparation of (5): To a solution of 4 in toluene (100.00 mL) was added 4a (5.73 g, 9.07 mmol) and KOH (916.3 g, 16.33 mmol). It was stirred for 3.5 h at 40° C. in N₂atmosphere. Then was extracted with EA, washed with water and sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 5 (5.02 g, 7.25 mmol, 80.44% yield). ESI-LCMS: m/z 693.2 [M+H]⁺; ³¹P-NMR (162 MHz, DMSO-d₆): δ 17.811

Preparation of (6): To a solution of 5 (4.59 g, 6.63 mmol) in THF (46.00 mL) was added HCOOH (92.00 mL) and H₂O (92.00 mL). It was stirred overnight at r.t. NH₄OH was poured into it and extracted with EA, washed with sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 6 (2.52 g, 4.36 mmol, 65.80% yield).

Preparation of Example 35 monomer: To a solution of 6 (2.00 g, 3.46 mmol) in DCM (21.00 mL) was added DCI (370.00 mg, 3.11 mmol) and CEP (1.12 g, 4.15 mmol) was added in N₂atmosphere. DCM and H₂O was poured, the organic phase was washed with water and sat. NaCl (aq.), dried over by Na₂SO₄. The filtrate was evaporated under reduced pressure at 38° C. to give the crude product which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 35 monomer (2.10 g, 2.70 mmol, 78.07% yield). ¹H-NMR (400 MHz, DMSO-d₆): δ 7.39-7.32 (m, 6H), 6.21-6.11 (m, 1H), 5.64-5.61 (m, 4H), 4.91-4.85 (m, 1H), 4.59 (m, 1H), 4.28-4.25 (m, 1H), 3.84-3.60 (m, 5H), 3.36-3.36 (m, 2H), 2.83-2.79 (m, 2H), 1.18-1.14 (m, 29H). ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.588, 148.920, 17.355, 17.010.

Example 36. Synthesis of Monomer

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Preparation of (2): To a solution of 1 (35.0 g, 53.2 mmol) in DMF (350 mL) was added imidazole (9.0 g, 133.0 mmol) then added TBSCl (12.0 g, 79.8 mmol) at 0° C. The mixture was stirred at r.t. for 14 hrs. TLC showed 1 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure the crude 2 (41.6 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 772 [M+H]⁺.

Preparation of (3): To a solution of 2 (41.0 g, 53.1 mmol) in 3% DCA (53.1 mmol, 350 mL) and Et₃SiH (53.1 mmol, 100 mL) at 0° C. The mixture was stirred at 0° C. for 0.5 h. TLC showed 2 was consumed completely. NaHCO₃was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure. The residue silica gel column chromatography (eluent, DCM/MeOH=100:1-20:1). This resulted in to give 3 (20.0 g, 41.7 mmol, 78.6% over two step) as a white solid. ESI-LCMS: m/z 470 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.12 (s, 1H), 11.67 (s, 1H), 8.28 (s, 1H), 6.12-6.07 (dd, J=15 Hz, 1H), 5.75 (d, J=5 Hz, 1H), 5.48-5.24 (m, 2H), 4.55-4.49 (m, 1H), 3.97 (s, 1H), 3.75-3.55 (m, 2H), 2.79-2.76 (m, 1H), 1.12 (d, J=6 Hz, 6H), 0.88 (s, 9H), 0.11 (d, J=6 Hz, 6H).

Preparation of (4): To the solution of 3 (20 g, 42.6 mmol) in dry DCM (100 mL) and DMF (60 mL) was added PDC (20. g, 85.1 mmol), tert-butyl alcohol (63.1 g, 851.8 mmol) and Ac₂O (43.4 g, 425.9 mmol) at r.t. under N₂atmosphere. And the reaction mixture was stirred at r.t. for 2 h. The solvent was removed to give a residue which was purified by silica gel column chromatography (eluent, PE:EA=4:1-2:1) to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 4 (16.0 g, 29.0 mmol, 68.2% yield) as a white solid. ESI-LCMS: m/z 540 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.12 (s, 1H), 11.69 (s, 1H), 8.28 (s, 1H), 6.21-6.17 (dd, J=15 Hz, 1H), 5.63-5.55 (m, 1H), 4.75-4.72 (m, 1H), 4.41 (d, J=5 Hz, 1H), 2.79-2.76 (m, 1H), 1.46 (s, 9H), 1.13-1.11 (m, 6H), 0.90 (s, 9H), 0.14 (d, J=2 Hz, 6H).

Preparation of (5): To the solution of 4 (16.0 g, 29.6 mmol) in dry THF/MeOD/D₂O=10/2/1 (195 mL) was added NaBD₄(3.4 g, 88.9 mmol) at r.t. and the reaction mixture was stirred at 50° C. for 2 h. After completion of reaction, adjusted pH value to 7 with CH₃COOD, after addition of water, the resulting mixture was extracted with EA (300 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, Then the solution was concentrated under reduced pressure the crude 5 (11.8 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 402 [M+H]⁺.

Preparation of (6): To a solution of 5 (5.0 g, 12.4 mmol) in pyridine (50 mL) was added iBuCl (2.6 g, 24.9 mmol) at 0° C. under N₂atmosphere. The mixture was stirred at r.t. for 14 h. TLC showed 5 was consumed completely. Then the solution diluted with EA. The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure to give the crude. To a solution of the crude in pyridine (50 mL) was added 2N NaOH (MeOH/H₂O=4:1, 15 mL) at 0° C. The mixture was stirred at 0° C. for 10 min. Then the solution diluted with EA. The organic layer was washed with NH₄Cl and brine. Then the solution was concentrated under reduced pressure the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2; Detector, UV 254 nm. This resulted in to give 6 (6 g, 10.86 mmol, 87.17% yield) as a white solid. ESI-LCMS: m/z 472.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.12 (s, 1H), 11.67 (s, 1H), 8.28 (s, 1H), 6.12-6.07 (dd, J=15 Hz, 1H), 5.48-5.24 (m, 2H), 5.22 (s, 1H), 4.55-4.49 (m, 1H), 3.97 (d, J=5 Hz, 1H), 2.79-2.76 (m, 1H), 1.12 (d, J=6 Hz, 6H), 0.88 (s, 9H), 0.11 (d, J=6 Hz, 6H).

Preparation of (7): To a solution of 6 (3.8 g, 8.1 mmol) in pyridine (40 mL) was added DMTrCl (4.1 g, 12.1 mmol) at 20° C. The mixture was stirred at 20° C. for 1 h. TLC showed 7 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure to give the crude product of 7 (6 g, 7.6 mmol, 94.3% yield) as a yellow solid. ESI-LCMS: m/z 775 [M+H]⁺.

Preparation of (8): To a solution of 7 (6.0 g, 7.75 mmol) in THF (60 mL) was added TBAF (2.4 g, 9.3 mmol). The mixture was stirred at r.t. for 1 h. TLC showed 7 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure, the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1; Detector, UV 254 nm. This resulted in to give 8 (4.0 g, 5.9 mmol, 76.6% yield) as a white solid. ESI-LCMS: m/z 660 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.12 (s, 1H), 11.67 (s, 1H), 8.12 (s, 1H), 7.34-7.17 (m, 9H), 6.83-6.78 (m, 4H), 6.23-6.18 (m, 1H), 5.66 (d, J=7 Hz, 1H), 5.48-5.35 (m, 1H), 4.65-4.54 (m, 1H), 3.72 (d, J=2 Hz, 6H), 2.79-2.73 (m, 1H), 1.19-1.06 (m, 6H).

Preparation of Example 36 monomer: To a solution of 9 (4.0 g, 6.1 mmol) in DCM (40 mL) was added DCI (608 mg, 5.1 mmol) and CEP (2.2 g, 7.3 mmol) under N₂pro. The mixture was stirred at 20° C. for 0.5 h. TLC showed 9 was consumed completely. The product was extracted with DCM, The organic layer was washed with H₂O and brine. Then the solution was concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 36 monomer (5.1 g, 5.81 mmol, 95.8% yield) as a white solid. ESI-LCMS: m/z 860 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.12 (s, 1H), 11.67 (s, 1H), 8.12 (s, 1H), 7.34-7.17 (m, 9H), 6.83-6.78 (m, 4H), 6.23-6.18 (m, 1H), 5.67-5.54 (m, 1H), 4.70-4.67 (m, 1H), 4.23-4.20 (m, 1H), 3.72 (m, 6H), 3.60-3.48 (m, 3H), 2.79-2.58 (m, 3H), 1.13-0.94 (m, 18H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 150.31, 150.26, 140.62, 149.57.

Example 37: Synthesis of Monomer

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Preparation of (2): To a solution of 1 (35 g, 130.2 mmol) in DMF (350 mL) was added imidazole (26.5 g, 390.0 mmol) then added TBSCl (48.7 g, 325.8 mmol) at 0° C. The mixture was stirred at r.t. for 14 h. TLC showed 1 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure the crude 2 (64.6 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 498 [M+H]⁺.

Preparation of (3): To a solution of 2 (64.6 g, 130.2 mmol) in THF (300 mL) and added TFA/H₂O (1:1, 300 mL) at 0° C. The mixture was stirred at 0° C. for 2 h. TLC showed 2 was consumed completely. NaHCO₃was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent, DCM:MEOH=100:1˜20:1). This resulted in to give 3 (31.3 g, 81.7 mmol, 62.6% over two step) as a white solid. ESI-LCMS: m/z 384 [M+H]⁺.

Preparation of (4): To a solution of 3 (31.3 g, 81.7 mmol) in ACN/H₂O (1:1, 350 mL) was added DAIB (78.0 g, 244.0 mmol) and Tempo (3.8 g, 24.4 mmol). The mixture was stirred at 40° C. for 2 h. TLC showed 3 was consumed completely. Then filtered to give 4 (22.5 g, 55.5 mmol, 70.9%) as a white solid. ESI-LCMS: m/z 398 [M+H]⁺.

Preparation of (5): To a solution of 4 (22.5 g, 55.5 mmol) in MeOH (225 mL) held at −15° C. with an ice/MeOH bath was added SOCl₂(7.6 mL, 94.5 mmol), dropwise at such a rate that the reaction temp did not exceed 7° C. After the addition was complete, cooling was removed, the reaction was allowed to stir at room temp. The mixture was stirred at r.t. for 14 h. TLC showed 4 was consumed completely. Then the solution was concentrated under reduced pressure to get crude 5 (23.0 g) as a white solid which was used directly for next step. ESI-LCMS: m/z 298 [M+H]⁺.

Preparation of (6): To a solution of 5 (23 g, 55.5 mmol) in DMF (220 mL) was added imidazole (11.6 g, 165.0 mmol) then added TBSCl (12.3 g, 82.3 mmol) at 0° C. The mixture was stirred at 20° C. for 14 h. TLC showed 1 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent, DCM:MEOH=100:1˜20:1). This resulted in to give 6 (21.3 g, 51.1 mmol, 90% over two step) as a white solid. ESI-LCMS: m/z 412 [M+H]⁺.

Preparation of (7): To the solution of 6 (21.0 g, 51.0 mmol) in dry THF/MeOD/D₂O=10/2/1 (260.5 mL) was added NaBD₄(6.4 g, 153.1 mmol) at r.t. and the reaction mixture was stirred at 50° C. for 2 h. After completion of reaction, the resulting mixture was added CH₃COOD to pH=7, after addition of water, the resulting mixture was extracted with EA (300 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄. Then the solution was concentrated under reduced pressure and the residue was used for next step without further purification. ESI-LCMS: m/z 386 [M+H]⁺.

Preparation of (8): To a stirred solution of 7 (14.0 g, 35 mmol) in pyridine (50 mL) were added BzCl (17.2 g, 122.5 mmol) at 0° C. under N₂atmosphere. The mixture was stirred at r.t. for 14 h. TLC showed 7 was consumed completely. Then the solution diluted with EA. The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure and the residue was used for next step without further purification. To a solution of the crude in pyridine (300 mL) then added 2 M NaOH (MeOH: H₂O=4:1, 60 mL) at 0° C. The mixture was stirred at 0° C. for 10 min. Then the solution diluted with EA. The organic layer was washed with NH₄Cl and brine. Then the solution was concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2; Detector, UV 254 nm. This resulted in to give 8 (14 g, 28.02 mmol, 69.21% yield) as a white solid. ESI-LCMS: m/z 490 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.24 (s, 1H), 8.76 (s, 1H), 8.71 (m, 1H), 8.04 (d, J=7 Hz, 2H), 7.66-7.10 (m, 5H), 6.40-6.35 (dd, 1H), 5.71-5.56 (m, 1H), 5.16 (s, 1H), 4.79-4.72 (m, 1H), 4.01 (m, 1H), 0.91 (s, 9H), 0.14 (m, 6H).

Preparation of (9): To a solution of 8 (5.1 g, 10.4 mmol) in pyridine (50 mL) was added DMTrCl (5.3 g, 15.6 mmol). The mixture was stirred at r.t. for 1 h. TLC showed 8 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure and the residue was used for next step without further purification. ESI-LCMS: m/z 792 [M+H]⁺.

Preparation of (10): To a solution of 9 (7.9 g, 10.0 mmol) in THF (80 mL) was added 1 M TBAF in THF (12 mL). The mixture was stirred at r.t. for 1 h. TLC showed 9 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1; Detector, UV 254 nm. This resulted in to give 10 as a white solid. ESI-LCMS: m/z 678 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.25 (s, 1H), 8.74 (s, 1H), 8.62 (s, 1H), 8.04 (d, J=7 Hz, 2H), 7.66-7.53 (m, 3H), 7.33-7.15 (m, 9H), 6.82-6.78 (m, 4H), 6.43 (d, J=20 Hz, 1H), 5.76-5.60 (m, 1H), 4.88-4.80 (m, 1H), 4.13 (d, J=8 Hz, 1H), 3.71 (m, 6H).

Preparation of Example 37 monomer: To a solution of 10 (6.2 g, 9.1 mmol) in DCM (60 mL) was added DCI (1.1 g, 9.4 mmol) and CEP (3.3 g, 10.9 mmol) under N₂pro. The mixture was stirred at 20° C. for 0.5 h. TLC showed 10 was consumed completely. The product was extracted with DCM, The organic layer was washed with H₂O and brine. Then the solution was concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 37 monomer (7.5 g, 8.3 mmol, 90.7%) as a white solid. ESI-LCMS: m/z 878 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.25 (s, 1H), 8.68-8.65 (dd, 2H), 8.04 (m, 2H), 7.66-7.53 (m, 3H), 7.33-7.15 (m, 9H), 6.82-6.78 (m, 4H), 6.53-6.43 (m, 1H), 5.96-5.81 (m, 1H), 5.36-5.15 (m, 1H), 4.21 (m, 1H), 3.86-3.52 (m, 10H), 2.79-2.61 (m, 2H), 1.21-0.99 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.60, 149.56, 149.48.

Example 38. Synthesis of End Cap Monomer

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Preparation of (2): To a solution of 1 (20.0 g, 71.2 mmol) in dry pyridine (200.0 mL) was added TBSCl (26.8 g, 177.9 mmol) and imidazole (15.6 g, 227.8 mmol). The mixture was stirred at r.t. for 15 h. TLC showed 1 was consumed completely. The reaction mixture was concentrated to give residue. The residue was quenched with DCM (300.0 mL). The DCM layer was washed with H₂O (100.0 mL*2) and brine. The DCM layer concentrated to give crude 2 (45.8 g) as a yellow oil. The crude used to next step directly. ESI-LCMS m/z 510.5 [M+H]⁺.

Preparation of (3): To a mixture solution of 2 (45.8 g) in THF (300.0 mL) was added mixture of H₂O (100.0 mL) and TFA (100.0 mL) at 0° C. over 30 min. Then the reaction mixture was stirred at 0° C. for 4 h. TLC showed the 2 was consumed completely. The reaction mixture pH was adjusted to 7-8 with NH₃.H₂O (100 mL). Then the mixture was extracted with EA (500.0 mL*2). The combined EA layer was washed with brine and concentrated to give crude which was purified by c.c. (PE:EA=5:1˜1:0) to give compound 3 (21.0 g, 53.2 mmol, 74.7% yield over 2 steps) as a white solid. ESI-LCMS m/z 396.2 [M+H]⁺.

Preparation of (4): To a solution of 3 (21.0 g, 53.2 mmol) in ACN (100.0 mL) and water (100.0 mL) were added (diacetoxyiodo)benzene (51.0 g, 159.5 mmol) and TEMPO (2.5 g, 15.9 mmol), The reaction mixture was stirred at 40° C. for 1 h. TLC showed the 3 was consumed completely. The reaction mixture was cooled down to r.t. and filtered, the filtrate was concentrated to give crude which was purified by crystallization (ACN) to give 4 (14.5 g, 35.4 mmol, 66.2% yield). ESI-LCMS m/z 410.1[M+H]⁺.

Preparation of (5): To a solution of 4 (14.5 g, 35.4 mmol) in toluene (90.0 mL) and MeOH (60.0 mL) was added trimethylsilyldiazomethane (62.5 mL, 2.0 M, 141.8 mmol) at 0° C., then stirred at r.t. for 2 h. TLC showed the 4 was consumed completely. The solvent was removed under reduce pressure, the residue was purified by crystallization (ACN) to give 5 (10.0 g, 23.6 mmol, 66.6% yield). ESI-LCMS m/z 424.2 [M+H]⁺

Preparation of (6): To the solution of 5 (10.0 g, 23.6 mmol) in dry THF/MeOD/D₂O=10/2/1 (100.0 mL) was added NaBD₄(2.98 g, 70.9 mmol) three times during an hour at 40° C., the reaction mixture was stirred at r.t. for 2.0 h. The resulting mixture was added CH₃COOD change pH=7.5, after addition of water, the resulting mixture was extracted with EA (50.0 mL*3). The combined organic layer was washed with water and brine, dried over Na₂SO₄, concentrated to give a residue which was purified by c.c. (PE/EA=1:1˜1:0). This resulted in to give 6 (6.1 g, 15.4 mmol, 65.3% yield) as a white solid. ESI-LCMS m/z 398.1 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 8.28 (s, 1H), 8.02 (s, 1H), 7.23 (s, 2H), 5.86 (d, J=6.4 Hz, 1H), 5.26 (s, 1H), 4.42-4.41 (m, 1H), 4.35-4.32 (m, 1H), 3.82 (d, J=2.6 Hz, 1H), 3.14 (s, 3H), 0.78 (s, 9H), 0.00 (d, J=0.9 Hz, 6H).

Preparation of (7): To a solution of 6 (6.1 g, 15.4 mmol) in pyridine (60.0 mL) was added the benzoyl chloride (6.5 g, 46.2 mmol) drop wise at 5° C. The reaction mixture was stirred at r.t. for 2 h. TLC showed the 6 was consumed completely. The reaction mixture was cooled down to 10° C. and quenched with H₂O (20.0 mL), extracted with EA (200.0 mL*2), combined the EA layer. The organic phase was washed with brine and dried over Na₂SO₄, concentrated to give the crude (12.0 g) which was dissolved in pyridine (60.0 mL), cooled to 0° C., 20.0 mL NaOH (2 M in methanol:H₂O=4:1) was added and stirred for 10 min. The reaction was quenched by saturated solution of ammonium chloride, the aqueous layer was extracted with EA (200.0 mL*2), combined the EA layer, washed with brine and dried over Na₂SO₄, concentrated. The residue was purified by c.c. (PE/EA=10:1˜1:1) to give 7 (7.0 g, 13.9 mmol, 90.2% yield). ESI-LCMS m/z 502.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆) δ 11.24 (s, 1H, exchanged with D₂O) 8.77 (s, 2H), 8.04-8.06 (m, 2H), 7.64-7.66 (m, 2H), 7.54-7.58 (m, 2H), 6.14-6.16 (d, J=5.9 Hz, 1H), 5.20-5.23 (m, 1H), 4.58-4.60 (m, 1H), 4.52-4.55 (m, 1H), 3.99-4.01 (m, 1H), 3.34 (s, 4H), 0.93 (s, 9H), 0.14-0.15 (d, J=1.44 Hz, 6H).

Preparation of (8): To a stirred solution of 7 (5.5 g, 10.9 mmol) in DMSO (55.0 mL) was added EDCI (6.3 g, 32.9 mmol), pyridine (0.9 g, 10.9 mmol) and TFA (0.6 g, 5.5 mmol), the reaction mixture was stirred at r.t. for 15 h. The reaction was quenched with water and extracted with EA (100.0 mL). The organic phase was washed by brine, dried over Na₂SO₄, The organic phase was evaporated to dryness under reduced pressure to give a residue 8 (4.8 g) which was used directly to next step. ESI-LCMS: m/z 517.1 [M+H₂O]⁺.

Preparation of (9b): A solution of 9a (35.0 g, 150.8 mmol) and NaI (90.5 g, 603.4 mmol) in dry ACN (180.0 mL) was added chloromethyl pivalate (113.6 g, 754.3 mmol) at r.t., the reaction was stirred at 80° C. for 4 h. The reaction was cooled to r.t. and quenched by water, then the mixture was extracted with EA (500.0 mL*3), combined the organic layer was washed with saturated solution of ammonium chloride, followed by with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by c.c., this resulted in to give 9b (38.0 g, 60.1 mmol, 39.8% yield) as a white solid. ESI-LCMS m/z 655.2 [M+Na]⁺; ¹H-NMR (400 MHz, CDCl₃): δ 5.74-5.67 (m, 8H), 2.67 (t, J=21.6 Hz, 2H), 1.23 (s, 36H).

Preparation of (9): 3.8 g 10% Pd/C was washed with dry THF (30.0 mL) three times. Then transferred into a round-bottom flask charged with 9b (38.0 g, 60.1 mmol) and solvent (dry THF:D₂O=5:1, 400.0 mL), the mixture was stirred at 80° C. under 1 L H₂balloon for 15 h. The reaction was cooled to r.t. and extracted with EA (500.0 mL*3), combined the organic layer was washed with brine and dried over Na₂SO₄. The residue 9 (3.0 g, 3.7 mmol, 38.8% yield) as a white solid was used directly to next step without further purification. ESI-LCMS m/z 657.2 [M+Na]⁺; ¹H-NMR (400 MHz, CDCl₃): δ 5.74-5.67 (m, 8H), 1.23 (s, 36H).

Preparation of (10): A solution of 8 (4.8 g, 9.6 mmol), 9 (7.3 g, 11.5 mmol) and K₂CO₃(4.0 g, 38.8 mmol) in dry THF (60.0 mL) and D20 (20.0 mL) was stirred at r.t. 18 h. LC-MS showed 8 was consumed completely. The product was extracted with EA (300.0 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by c.c. (PE/EA=5:1˜1:1) and MPLC. This resulted in to give 10 (3.0 g, 3.7 mmol, 38.8% yield) as a white solid. ESI-LCMS m/z 806.4[M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.25 (s, 1H, exchanged with D₂O) 8.75 (s, 2H), 8.07-8.05 (d, J=8.0 Hz, 2H), 7.67-7.54 (m, 3H), 6.05 (d, J=5.1 Hz, 1H), 5.65-5.58 (m, 4H), 4.80-4.70 (m, 2H), 4.59-4.57 (m, 1H), 3.36 (s, 3H), 1.11 (s, 9H), 1.10 (s, 9H), 0.94 (s, 9H), 0.17-0.16 (m, 6H); ³¹P NMR (162 MHz, DMSO-d₆) δ 17.02.

Preparation of (11): To a round-bottom flask was added 10 (3.0 g, 3.7 mmol) in a mixture of H₂O (30.0 mL), HCOOH (30.0 mL). The reaction mixture was stirred at 40° C. for 15 hrs. LC-MS showed the 10 was consumed completely. The reaction mixture was adjusted the pH=6-7 with con. NH₃.H₂O (100.0 mL). Then the mixture was extracted with DCM (100.0 mL*3). The combined DCM layer was dried over Na₂SO₄. Filtered and filtrate was concentrated to give crude which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/2 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2; Detector, UV 254 nm. To give product 11 (1.8 g, 2.6 mmol, 70.3% yield). ESI-LCMS m/z=692.2[M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.11 (s, 1H, exchanged with D₂O) 8.71-8.75 (d, J=14.4, 2H), 8.04-8.06 (m, 2H), 7.64-7.65 (m, 1H), 7.54-7.58 (m, 2H), 6.20-6.22 (d, J=5.4, 2H), 5.74-5.75 (d, J=5.72, 2H), 5.56-5.64 (m, 4H), 4.64-4.67 (m, 1H), 4.58-4.59 (m, 1H), 4.49-4.52 (m, 1H), 3.37 (s, 3H), 1.09-1.10 (d, J=1.96, 18H); ³¹P NMR (162 MHz, DMSO-d₆) δ 17.46.

Preparation of Example 38 monomer: To a solution of 11 (1.8 g, 2.6 mmol) in DCM (18.0 mL) was added the DCI (276.0 mg, 2.3 mmol), then CEP[N(ipr)₂]₂(939.5 mg, 3.1 mmol) was added. The mixture was stirred at r.t. for 1 h. TLC showed 11 consumed completely. The reaction mixture was washed with H₂O (50.0 mL*2) and brine (50.0 mL*2), dried over Na₂SO₄and concentrated to give crude which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=9/1; Detector, UV 254 nm. The product was concentrated to give Example 38 monomer (2.0 g, 2.2 mmol, 86.2% yield) as a white solid. ESI-LCMS m/z 892.3[M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.27 (s, 1H, exchanged with D₂O) 8.72-8.75 (m, 2H), 8.04-8.06 (m, 2H), 7.54-7.68 (m, 3H), 6.20-6.26 (m, 1H), 5.57-5.64 (m, 4H), 4.70-4.87 (m, 3H), 3.66-3.88 (m, 4H), 3.37-3.41 (m, 3H), 2.82-2.86 (m, 2H), 1.20-1.21 (m, 12H), 1.08-1.09 (m, 18H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 150.03, 149.19, 17.05, 16.81.

Example 39. Synthesis of 5′ End Cap Monomer

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Preparation of (6): To a stirred solution of 5 (8.0 g, 21.3 mmol, Scheme 3) in DMSO (80.0 mL) were added EDCI (12.2 g, 63.9 mmol), pyridine (1.7 g, 21.3 mmol), TFA (1.2 g, 10.6 mmol) at r.t. And the reaction mixture was stirred at r.t. for 1.5 h. The reaction was quenched with water and extracted with EA (200.0 mL). The organic phase was washed by brine, dried over Na₂SO₄, The organic phase was evaporated to dryness under reduced pressure to give a residue 6 which was used directly to next step. ESI-LCMS: m/z 372.3 [M+H]⁺.

Preparation of (8): To a solution of K₂CO₃(5.5 g, 8.3 mmol) in dry THF (60.0 mL) and D20 (20.0 mL) was added a solution of 6 (8.0 g, 21.5 mmol) in dry THF (10.0 mL). The reaction mixture was stirred at r.t. overnight. LC-MS showed 6 was consumed completely. The product was extracted with EA (300.0 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 8 (5.0 g, 7.3 mmol, 40.0%) as a white solid. ESI-LCMS: m/z 679.3 [M+H]⁺; ¹H-NMR (400 MHz, Chloroform-d): δ 9.91 (s, 1H), 7.29 (d, J=8.1 Hz, 1H), 5.82 (d, J=2.7 Hz, 1H), 5.72 (d, J=8.1 Hz, 1H), 5.65-5.54 (m, 4H), 4.43 (dd, J=7.2, 3.2 Hz, 1H), 3.92 (dd, J=7.2, 5.0 Hz, 1H), 3.65 (dd, J=5.1, 2.7 Hz, 1H), 3.44 (s, 3H), 1.13 (s, 18H), 0.82 (s, 9H), 0.01 (d, J=4.8 Hz, 6H); ³¹P NMR (162 MHz, Chloroform-d): δ 16.40.

Preparation of (9): To a solution of HCOOH (50.0 mL) and H₂O (50.0 mL) was added 8 (5.0 g, 7.3 mmol). The reaction mixture was stirred at 40° C. overnight. LC-MS showed 8 was consumed completely. A solution of NaHCO₃(500.0 mL) was added. The product was extracted with EA (300.0 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 9 (3.0 g, 5.4 mmol, 73.2%) as a white solid. ESI-LCMS: m/z 565.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.43 (s, 1H), 7.64 (d, J=8.1 Hz, 1H), 5.83 (d, J=4.3 Hz, 1H), 5.69-5.56 (m, 5H), 5.54 (d, J=6.7 Hz, 1H), 4.37 (dd, J=6.1, 2.9 Hz, 1H), 4.12 (q, J=6.1 Hz, 1H), 3.96 (dd, J=5.4, 4.3 Hz, 1H), 3.39 (s, 3H), 1.16 (s, 18H); ³¹P NMR (162 MHz, DMSO-d₆): δ 17.16.

Preparation of Example 39 monomer: To a suspension of 9 (2.6 g, 4.6 mmol) in DCM (40.0 mL) was added DCI (0.5 g, 5.6 mmol) and CEP[N(iPr)₂]₂(1.7 g, 5.6 mmol). The mixture was stirred at r.t. for 1.0 h. LC-MS showed 9 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 39 monomer (3.0 g, 3.9 mmol, 85.2%) as a white solid. ESI-LCMS: m/z 765.3 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.44 (s, 1H), 7.71 (dd, J=8.1, 3.8 Hz, 1H), 5.81 (dd, J=4.4, 2.5 Hz, 1H), 5.74-5.53 (m, 5H), 4.59-4.33 (m, 2H), 4.20-4.14 (m, 1H), 3.88-3.53 (m, 4H), 3.39 (d, J=16.2 Hz, 3H), 2.80 (td, J=5.9, 2.9 Hz, 2H), 1.16 (d, J=1.9 Hz, 30H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 147.68, 149.16, 16.84, 16.55.

Example 40. Synthesis of Monomer

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Preparation of (2): To a solution of 1 (26.7 g*2, 0.1 mol) in DMF (400 mL) was added sodium hydride (4.8 g, 0.1 mol) for 30 min, then was added CD₃I (16 g, 0.1 mol) at 0° C. for 2.5 hr (ref. for selective 2′-O-alkylation reaction conditions, J. Org. Chem. 1991, 56, 5846-5859). The mixture was stirring at r.t. for another 1 h. LCMS showed the reaction was consumed. The mixture was filtered and the clear solution was evaporated to dryness and was evaporated with CH₃OH. The crude was purified by silica gel column (SiO₂, DCM/MeOH=50:1˜15:1). This resulted in to give the product 2 (35.5 g, 124.6 mmol, 62% yield) as a solid. ESI-LCMS: m/z 285 [M+H].

Preparation of (3): To a solution of 2 (35.5 g, 124.6 mmol) in pyridine (360 mL) was added imidazole (29.7 g, 436.1 mmol) and TBSCl (46.9 g, 311.5 mmol). The mixture was stirred at r.t. over night. LCMS showed 2 was consumed completely. The reaction was quenched with water (500 mL). The product was extracted into ethyl acetate (1 L). The organic layer was washed with brine and dried over anhydrous Na₂SO₄. The crude was purified by silica gel column (SiO₂, PE/EA=4:1˜1:1). This resulted in to give the product 3 (20.3 g, 39.6 mmol, 31.8% yield) as a solid. ESI-LCMS: m/z 513 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 8.32 (m, 1H), 8.13 (m, 1H), 7.31 (m, 2H), 6.02-6.01 (d, J=4.0 Hz, 1H), 4.60-4.58 (m, 1H), 4.49-4.47 (m, 1H), 3.96-3.86 (m, 2H), 3.72-3.68 (m, 1H), 0.91-0.85 (m, 18H), 0.13-0.01 (m, 12H).

Preparation of (4): To a solution of 3 (20.3 g, 39.6 mmol) in THF (80 mL) was added TFA (20 mL) and water (20 mL) at 0° C. The reaction mixture was stirred at 0° C. for 5 h. LC-MS showed 3 was consumed completely. Con. NH₄OH was added to the mixture at 0° C. to quench the reaction until the pH=7.5. The product was extracted into ethyl acetate (200 mL). The organic layer was washed with brine and dried over anhydrous Na₂SO₄. The solution was then concentrated under reduced pressure and the residue was washed by PE/EA=5:1. This resulted in to give 4 (10.5 g, 26.4 mmol, 66.6% yield) as a white solid. ESI-LCMS: m/z 399 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 8.41 (m, 1H), 8.14 (m, 1H), 7.37 (m, 2H), 5.99-5.97 (d, J=8.0 Hz, 1H), 5.43 (m, 1H), 4.54-4.44 (m, 2H), 3.97-3.94 (m, 1H), 3.70-3.53 (m, 2H), 0.91 (m, 9H), 0.13-0.12 (m, 6H).

Preparation of (5): To a solution of 4 (10.5 g, 26.4 mmol) in ACN/H₂O=1:1 (100 mL) was added DAIB (25.4 g, 79.2 mmol) and TEMPO (1.7 g, 7.9 mmol). The reaction mixture was stirred at 40° C. for 2 h. LCMS showed 4 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The organic layer was washed with brine and dried over anhydrous Na₂SO₄. The solution was then concentrated under reduced pressure and the residue was washed by ACN. This resulted in to give 5 (6.3 g, 15.3 mmol, 57.9% yield) as a white solid. ESI-LCMS: m/z 413 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ=8.48 (m, 1H), 8.16 (m, 1H), 7.41 (m, 2H), 6.12-6.10 (d, J=8.0 Hz, 1H), 4.75-4.73 (m, 1H), 4.42-4.36 (m, 2H), 3.17 (m, 6H), 2.07 (m, 2H), 0.93 (m, 9H), 0.17-0.15 (m, 6H).

Preparation of (6): To a solution of 5 (6.3 g, 15.3 mmol) in toluene (36 mL) and methanol (24 mL) was added (trimethylsilyl)diazomethane (7.0 g, 61.2 mmol) till the yellow color not disappear at r.t. for 2 min. LCMS showed the reaction was consumed. The solvent was removed to give the cured 6 (6.0 g) as a solid which used for the next step. ESI-LCMS: m/z 427 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 8.45 (m, 1H), 8.15 (m, 1H), 7.35 (m, 2H), 6.12-6.10 (d, J=8.0 Hz, 1H), 4.83-4.81 (m, 1H), 4.50-4.46 (m, 1H), 3.73 (m, 3H), 3.31 (m, 1H), 0.93 (m, 9H), 0.15-0.14 (m, 6H).

Preparation of (7): To the solution of 6 (6 g) in dry THF/MeOD/D₂O=10/2/1 (78 mL) was added NaBD₄(2.3 g, 54.8 mmol) at r.t. And the reaction mixture was stirred at r.t for 2.5 hr. After completion of reaction, adjusted pH value to 7 with CH₃COOD, after addition of water, the resulting mixture was extracted with EA (100 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give 7 (5.7 g) which was used for the next step. ESI-LCMS: m/z 401 [M+H].

Preparation of (8): To a solution of 7 (5.7 g) in pyridine (60 mL) was added BzCl (10.0 g, 71.3 mmol) under ice bath. The reaction mixture was stirred at r.t. for 2.5 hrs. LCMS showed 7 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=7/3; Detector, UV 254 nm. This resulted in to give the crude 8 (6.2 g, 8.7 mmol, 57% yield, over two steps) as a white solid. ESI-LCMS: n/z 713 [M+H]⁺.

Preparation of (9): To a solution of 8 (6.2 g, 8.7 mmol) in pyridine (70 mL) and was added 1 M NaOH (MeOH/H₂O=4/1) (24 mL). LCMS showed 8 was consumed. The mixture was added saturated NH₄Cl till pH=7.5. The mixture was diluted with water and EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=67/33 Detector, UV 254 nm. This resulted in to give the product 10 (4.3 g, 8.5 mmol, 98% yield) as a white solid. ESI-LCMS: m/z 505 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.23 (m, 1H), 8.77 (m, 2H), 8.06-8.04 (m, 2H), 7.66-7.63 (m, 2H), 7.57-7.53 (m, 3H), 6.16-6.14 (d, J=8.0 Hz, 1H), 5.17 (m, 1H), 4.60-4.52 (m, 2H), 3.34 (m, 1H), 0.93 (m, 9H), 0.14 (m, 6H).

Preparation of (10): To a stirred solution of 9 (4.3 g, 8.5 mmol) in pyridine (45 mL) were added DMTrCl (3.3 g, 9.8 mmol) at r.t. And the reaction mixture was stirred at r.t for 2.5 hr. With ice-bath cooling, the reaction was quenched with water and the product was extracted into EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=97/3 Detector, UV 254 nm. This resulted in to give the product 10 (6.5 g, 8.1 mmol, 95% yield) as a white solid. ESI-LCMS: m/z 807 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.23 (m, 1H), 8.70-8.68 (m, 2H), 8.04-8.02 (m, 2H), 7.66-7.62 (m, 1H), 7.56-7.52 (m, 2H), 7.35-7.26 (m, 2H), 7.25-7.17 (m, 7H), 6.85-6.82 (m, 4H), 6.18-6.16 (d, J=8.0 Hz, 1H), 4.73-4.70 (m, 1H), 4.61-4.58 (m, 1H), 3.71 (m, 6H), 3.32 (m, 1H), 0.83 (m, 9H), 0.09-0.03 (m, 6H).

Preparation of (11): To a solution of 10 (3.5 g, 4.3 mmol) in THF (35 mL) was added 1 M TBAF solution (5 mL). The reaction mixture was stirred at r.t. for 1.5 h. LCMS showed 10 was consumed completely. Water (100 mL) was added. The product was extracted with EA (100 mL) and the organic layer was washed with brine and dried over Na2SO4. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=62/38; Detector, UV 254 nm. This resulted in to give 11 (2.7 g, 3.9 mmol, 90.7%) as a white solid. ESI-LCMS: m/z 693 [M+H]⁺.

Preparation of Example 40 monomer: To a suspension of 11 (2.7 g, 3.9 mmol) in DCM (30 mL) was added DCI (0.39 g, 3.3 mmol) and CEP[N(iPr)₂]₂(1.4 g, 4.7 mmol). The mixture was stirred at r.t. for 2 h. LC-MS showed 11 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=73/27; Detector, UV 254 nm. This resulted in to give Example 40 monomer (3.3 g, 3.7 mmol, 94.9%) as a white solid. ESI-LCMS: m/z 893 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ=11.24 (m, 1H), 8.66-8.64 (m, 2H), 8.06-8.03 (m, 2H), 7.65-7.53 (m, 3H), 7.42-7.38 (m, 2H), 7.37-7.34 (m, 2H), 7.25-7.19 (m, 7H), 6.86-6.80 (m, 4H), 6.20-6.19 (d, J=4.0 Hz, 1H), 4.78 (m, 2H), 4.22-4.21 (m, 1H), 3.92-3.83 (m, 1H), 3.72 (m, 6H), 3.62-3.57 (m, 3H), 2.81-2.78 (m, 1H), 2.64-2.61 (m, 1H), 1.17-1.04 (m, 12H); ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.51, 149.30.

Example 41. Synthesis of Monomer

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Preparation of (3): To the solution of 1 (70 g, 138.9 mmol) in dry acetonitrile (700 mL) was added 2 (27.0 g, 166.7 mmol), BSA (112.8 g, 555.5 mmol). The mixture was stirred at 50° C. for 1 h. Then the mixture was cooled to −5° C. and TMSOTf (46.2 g, 208.3 mmol) slowly added to the mixture. Then the reaction mixture was stirred at r.t for 48 h. Then the solution was cooled to 0° C. and saturated aq. NaHCO₃was added and the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure to give a residue which was purified by silica gel column chromatography (eluent, PE:EA=3:1˜1:1) to give 3 (70 g, 115.3 mmol, 81.6%) as a white solid. ESI-LCMS: m/z 605 [M−H]⁺.

Preparation of (4): To the solution of 3 (70.0 g, 115.3 mmol) in methylammonium solution (1 M, 700 mL), and the reaction mixture was stirred at 40° C. for 15 h. After completion of reaction, the resulting mixture was concentrated. The residue was crystallized from EA. Solid was isolated by filtration, washed with PE and dried overnight at 45° C. in vacuum to give 4 (31.0 g, 105.4 mmol, 91.1%) as a white solid. ESI-LCMS: m/z 295 [M+H]⁺; ¹H-NMR (400 MHz, DMSO): δ 11.63 (s, 1H), 8.07-7.99 (m, 1H), 7.81 (d, J=8.4 Hz, 1H), 7.72-7.63 (m, 1H), 7.34-7.26 (m, 1H), 6.18 (d, J=6.4 Hz, 1H), 5.24 (s, 1H), 5.00 (s, 2H), 4.58-4.47 (m, 1H), 4.19-4.10 (m, 1H), 3.85-3.77 (m, 1H), 3.75-3.66 (m, 1H), 3.66-3.57 (m, 1H).

Preparation of (5): To the solution of 4 (20.0 g, 68.0 mmol) in dry DMF (200 mL) was added DPC (18.9 g, 88.0 mmol) and NaHCO₃(343 mg, 4 mmol) at r.t, and the reaction mixture was stirred at 150° C. for 35 min. After completion of reaction, the resulting mixture was poured into tert-Butyl methyl ether (4 L). Solid was isolated by filtration, washed with PE and dried in vacuum to give crude 5 (21.0 g) as a brown solid which was used directly for next step (ref for 5, Journal of Organic Chemistry, 1989, vol. 33, p. 1219-1225). ESI-LCMS: m/z 275 [M−H]⁻.

Preparation of (6): To the solution of 5 (crude, 21.0 g) in Pyridine (200 mL) was added AgNO₃(31.0 g, 180.0 mmol) and collidine (88.0 g, 720 mmol) and TrtCl (41.5 g, 181 mmol) at r.t, and the reaction mixture was stirred at r.t for 15 h. After addition of water, the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give the crude. The crude was by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 6 (10.0 g, 13.1 mmol, 20% yield over 3 steps) as a white solid. ESI-LCMS: m/z 761 [M+H]⁺.

Preparation of (7): To the solution of 6 (10.0 g, 13.1 mmol) in THF (100 mL) was added 6N NaOH (30 mL) at r.t, and the reaction mixture was stirred at r.t for 1 hr. After addition of NH₄Cl, the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=9/1; Detector, UV 254 nm. This resulted in to give 7 (9.3 g, 11.9 mmol, 90%) as a white solid. ESI-LCMS: m/z 777 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.57 (s, 1H), 8.02 (d, J=8.7 Hz, 1H), 7.88-7.81 (m, 1H), 7.39-7.18 (m, 30H), 7.09-6.99 (m, 30H), 6.92-6.84 (m, 30H), 6.44 (d, J=4.0 Hz, 1H), 4.87 (d, J=4.0 Hz, 1H), 4.37-4.29 (m, 1H), 4.00-3.96 (m, 1H), 3.76-3.70 (m, 1H), 3.22-3.13 (m, 1H), 3.13-3.04 (m, 1H).

Preparation of (8): To the solution of 7 (8.3 g, 10.7 mmol) in dry DCM (80 mL) was added Pyridine (5.0 g, 64.2 mmol) and DAST (6.9 g, 42.8 mmol) at 0° C., and the reaction mixture was stirred at r.t for 15 hr. After addition of NH₄Cl, the resulting mixture was extracted with DCM. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 8 (6.8 g, 8.7 mmol, 81.2%) as a white solid. ESI-LCMS: m/z 779 [M−H]⁺; ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−183.05.

Preparation of (9): To the solution of 8 (5.8 g, 7.5 mmol) in dry ACN (60 mL) was added TEA (1.5 g, 15.1 mmol), DMAP (1.84 g, 15.1 mmol) and TPSCl (4.1 g, 13.6 mmol) at r.t, and the reaction mixture was stirred at room temperature for 3 h under N₂atmosphere. After completion of reaction, the mixture was added NH₃.H₂O (12 mL). After addition of water, the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 9 (5.5 g, 7 mmol, 90.2%) as a white solid. ESI-LCMS: m/z 780 [M+H]⁺.

Preparation of (10): To a solution of 9 (5.5 g, 7 mmol) in DCM (50 mL) with an inert atmosphere of nitrogen was added pyridine (5.6 g, 70.0 mmol) and BzCl (1.2 g, 8.5 mmol) in order at 0° C. The reaction solution was stirred for 30 minutes at room temperature. The solution was diluted with DCM (100 mL) and the combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure to give a residue which was purified by silica gel column chromatography (eluent, PE:EA=5:1˜2:1) to give 10 (5.4 g, 6.1 mmol, 90.6%) as a white solid. ESI-LCMS: m/z 884 [M+H]⁺; ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−183.64.

Preparation of (11): To the solution of 10 (5.4 g, 6.1 mmol) in the solution of DCA (6%) in DCM (60 mL) was added TES (15 mL) at r.t, and the reaction mixture was stirred at room temperature for 5-10 min. After completion of reaction, the resulting mixture was added NaHCO₃, the resulting mixture was extracted with DCM. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure and the residue was crystallized from EA. Solid was isolated by filtration, washed with PE and dried overnight at 450 in vacuum to give 11 (2.0 g, 5.0 mmol, 83.2%) as a white solid. ESI-LCMS: m/z 400 [M+H]⁺.

Preparation of (12): To a solution of 11 (2.0 g, 5.0 mmol) in dry Pyridine (20 mL) was added DMTrCl (2.0 g, 6.0 mmol). The reaction mixture was stirred at r.t. for 2.5 h. LCMS showed 11 was consumed and water (200 mL) was added. The product was extracted with EA (200 mL) and the organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by c.c. (PE:EA=4:1˜1:1) to give crude 12. The crude was further purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give 12 (2.1 g, 3 mmol, 60%) as a white solid. ESI-LCMS: m/z 702 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.63 (s, 1H), 8.54 (d, J=7.8 Hz, 1H), 8.25 (d, J=7.2 Hz, 2H), 7.82 (d, J=3.6 Hz, 2H), 7.67-7.58 (m, 1H), 7.57-7.49 (m, 2H), 7.49-7.39 (m, 1H), 7.39-7.31 (m, 2H), 7.27-7.09 (m, 7H), 6.82-6.69 (m, 4H), 6.23 (d, J=26.1 Hz, 1H), 5.59-5.49 (m, 1H), 4.83-4.61 (m, 1H), 4.15-4.01 (m, 1H), 3.74-3.59 (m, 6H), 3.33-3.28 (m, 1H), 3.16-3.05 (m, 1H). ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−191.66.

Preparation of Example 41 monomer: To a suspension of 12 (2.1 g, 3.0 mmol) in DCM (20 mL) was added DCI (310 mg, 2.6 mmol) and CEP[N(iPr)₂]₂(1.1 g, 3.7 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 12 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give the crude. The crude was by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 41 monomer (2.1 g, 2.3 mmol, 80.0%) as a white solid. ESI-LCMS: m/z 902 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.64 (s, 1H), 8.54 (d, J=7.6 Hz, 1H), 8.24 (d, J=7.7 Hz, 2H), 7.93-7.88 (m, 2H), 7.67-7.58 (m, 1H), 7.56-7.42 (m, 3H), 7.41-7.29 (m, 2H), 7.27-7.08 (m, 7H), 6.82-6.64 (m, 4H), 6.37-6.18 (m, 1H), 6.03-5.72 (m, 1H), 5.26-4.83 (m, 1H), 4.28-4.12 (m, 1H), 3.88-3.72 (m, 1H), 3.71-3.37 (m, 9H), 3.15-3.00 (m, 1H), 2.83-2.75 (m, 1H), 2.66-2.57 (m, 1H), 1.21-0.88 (m, 12H). ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−189.71. ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.48, 149.50, 148.95, 148.88.

Example 42. Synthesis of Monomer

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Preparation of (2): To a solution of 1 (40.0 g, 79.3 mmol), 1a (7.6 g, 80.1 mmol) in ACN (100 mL). Then added BSA (35.2 g, 174.4 mmol) under N₂atmosphere. The mixture was stirred at 50° C. for 1 h until the solution was clear. Then cool down to 0° C. and dropped TMSOTf (18.5 g, 83.2 mmol). The mixture was stirred at 75° C. for 1 h, TLC showed 1 was consumed completely. Then the solution was diluted with EA, washed with H₂O twice. The solvent was concentrated under reduced pressure and the residue was used for next step. ESI-LCMS: m/z 540 [M+H]⁺.

Preparation of (3): To a solution of 2 (37.1 g, 68.7 mmol) in 30% CH₂NH₂/MeOH solution (200 mL). The mixture was stirred at 25° C. for 2 h. TLC showed 2 was consumed completely. The solvent was concentrated under reduced pressure and the residue was washed with EA twice to give 3 (12.5 g, 55.2 mmol) (ref. for intermediate 3 Bioorganic & Medicinal Chemistry Letters, 1996, Vol. 6, No. 4, pp. 373-378) which was used directly for the next step. ESI-LCMS: m/z 228 [M+H]⁺.

Preparation of (4): To a solution of 3 (12.5 g, 55.2 mmol) in pyridine (125 mL) and added DMAP (1.3 g, 11.0 mmol), TrtCl (30.7 g, 110.5 mmol). The mixture was stirred at r.t. for 24 h. TLC showed 3 was consumed completely. H₂O was added to the mixture. Then filtered and the solution diluted with EA. The organic layer was washed with NaHCO₃and brine. The solvent was concentrated under reduced pressure and then added ACN, filtered to give 4a (17.0 g, 35.4 mmol, 64% yield) as a white solid.

To a solution of 4a (17.0 g, 35.4 mmol) in DMF (200 mL), collidine (5.2 g, 43.5 mmol), TrCl (13.1 g, 47.1 mmol) were added after 2 h and then again after 3 h TrCl (13.1 g, 47.1 mmol), AgNO₃(8.0 g, 47.1 mmol). The mixture was stirred at 25° C. for 24 h. TLC showed 4a was consumed completely. Then filtered and the solution diluted with EA. The organic layer was washed with NaHCO₃and brine. The solvent was concentrated under reduced pressure and then added ACN, filtered to get 4 (14.2 g, 19.5 mmol, 54% yield) as a white solid. ESI-LCMS: m/z 712 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.83 (d, J=8 Hz, 2H), 7.42-7.20 (m, 30H), 6.18 (d, J=7 Hz, 1H), 6.09 (d, J=8 Hz, 2H), 5.60 (d, J=7 Hz, 1H), 4.22 (m, 1H), 3.90 (d, J=5 Hz, 1H), 2.85 (d, J=10 Hz, 1H), 2.76 (s, 1H), 2.55-2.50 (dd, 1H).

Preparation of (5): To a solution of 4 (14.2 g, 19.9 mmol) in DCM (150 mL), DMAP (2.4 g, 19.9 mmol), TEA (4.0 g, 39.9 mmol, 5.6 mL) were added. Then cool down to 0° C., TfCl (6.7 g, 39.9 mmol) dissolved in DCM (150 mL) were dropped. The mixture was stirred at 25° C. for 1 h. TLC showed 4 was consumed completely. Then filtered and the solution diluted with EA. The organic layer was washed with NaHCO₃and brine. The solvent was concentrated under reduced pressure to get 5 (16.8 g, 19.9 mmol) as a brown solid. ESI-LCMS: m/z 844 [M+H]⁺.

Preparation of (6): To a solution of 5 (16.8 g, 19.9 mmol) in DMF (200 mL), KOAc (9.7 g, 99.6 mmol) were added, The mixture was stirred at 25° C. for 14 h and 50° C. for 3 h, TLC showed 5 was consumed completely. Then filtered and the solution diluted with EA. The organic layer was washed with H₂O and brine. The solvent was concentrated under reduced pressure to get 6a (15.0 g, 18.9 mmol, 90% yield) as a brown solid. To a solution of 6a (15.0 g, 19.9 mmol) in 30% CH₃NH₂/MeOH solution (100 mL) were added. The mixture was stirred at 25° C. for 2 h, TLC showed 6a was consumed completely. Then the solvent was concentrated under reduced pressure and the residue was purified by cc (0-5% MeOH in DCM) to give 6 (11.6 g, 16.3 mmol, 82% yield) as a yellow solid. ESI-LCMS: m/z 712 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.59 (d, J=8 Hz, 2H), 7.37-7.22 (m, 30H), 6.01 (d, J=8 Hz, 2H), 5.84 (d, J=3 Hz, 1H), 5.42 (d, J=4 Hz, 1H), 3.78-3.70 (m, 3H), 3.10 (t, J=9 Hz, 1H), 2.53 (d, J=4 Hz, 6H), 1.77 (s, 6H).

Preparation of (7): To a solution of 6 (11.6 g, 16.32 mmol) in DCM (200 mL), DAST (7.9 g, 48.9 mmol) were added at 0° C., The mixture was stirred at 25° C. for 16 h, TLC showed 6 was consumed completely. Then the solution was diluted with EA, washed with NaHCO₃twice, The solvent was concentrated under reduced pressure the residue purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1; Detector, UV 254 nm. This resulted in to give 7 (11.6 g, 13.8 mmol, 84% yield) as a white solid. ESI-LCMS: m/z 714 [M+H].

Preparation of (8): To a solution of 7 (11.6 g, 16.2 mmol) in DCM (100 mL) was added TFA (10 mL). The mixture was stirred at 20° C. for 1 h. TLC showed 7 was consumed completely. Then the solution was concentrated under reduced pressure the residue was purified by silica gel column (0˜20% MeOH in DCM) and Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=0/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=0/1; Detector, UV 254 nm. This resulted in to give 9 (1.7 g, 7.2 mmol, 45% yield) as a white solid. ESI-LCMS: m/z 229.9 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.91 (d, J=8 Hz, 2H), 6.14 (d, J=8 Hz, 2H), 5.81-5.76 (m, 2H), 5.28 (t, J=5 Hz, 1H), 5.13-4.97 (t, J=4 Hz, 1H), 4.23 (m, 1H), 3.97 (m, 1H), 3.74-3.58 (m, 2H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−206.09.

Preparation of (9): To a solution of 8 (1.4 g, 6.1 mmol) in pyridine (14 mL) was added DMTrCl (2.5 g, 7.3 mmol) at 20° C. The mixture was stirred at 20° C. for 1 h. TLC showed 8 was consumed completely. Water was added to the reaction. The product was extracted with EA, The organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 9 (2.5 g, 4.6 mmol, 76 yield) as a white solid. ESI-LCMS: m/z 532.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.87-7.84 (m, 2H), 7.40-7.22 (m, 9H), 6.91-6.87 (m, 4H), 5.98-5.95 (m, 2H), 5.88-5.77 (m, 2H), 5.16-5.02 (m, 1H), 4.42 (m, 1H), 4.05 (m, 1H), 3.74 (s, 6H), 3.35 (m, 2H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−202.32.

Preparation of Example 42 monomer: To a solution of 9 (2.2 g, 4.1 mmol) in DCM (20 mL) was added DCI (415 mg, 3.5 mmol) and CEP (1.5 g, 4.9 mmol) under N₂pro. The mixture was stirred at 20° C. for 0.5 h. TLC showed 9 was consumed completely. The product was extracted with DCM, The organic layer was washed with H₂O and brine. Then the solution was concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 42 monomer (2.6 g, 3.5 mmol, 85% yield) as a white solid. ESI-LCMS: m/z 732.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.87-7.84 (m, 2H), 7.40-7.22 (m, 9H), 6.91-6.87 (m, 4H), 5.98-5.95 (m, 2H), 5.90-5.88 (m, 1H), 5.30-5.17 (m, 1H), 4.62 (m, 1H), 4.19 (m, 1H), 3.78-3.73 (m, 7H), 3.62-3.35 (m, 5H), 2.78 (t, J=5 Hz, 1H), 2.63 (t, J=6 Hz, 1H), 1.14-0.96 (m, 12H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−200.77, 200.80, 201.62, 201.64. ³¹P-NMR (162 MHz, DMSO-d₆): δ 150.31, 150.24, 149.66, 149.60.

Example 43. Synthesis of End Cap Monomer

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Preparation of (8): To a stirred solution of 7 (13.4 g, 35.5 mmol, Scheme 5) in DMSO (135 mL) were added EDCI (6.3 g, 32.9 mmol) and pyridine (0.9 g, 10.9 mmol), TFA (0.6 g, 5.5 mmol) at r.t. And the reaction mixture was stirred at r.t for 2 h. LCMS showed 7 consumed completely. The reaction was quenched with water and the product was extracted with EA (1800 mL). The organic phase was washed by brine, dried over Na₂SO₄, The organic phase was evaporated to dryness under reduced pressure to give a residue 8 (13.2 g, 35.3 mmol, 99.3% yield). Which was used directly to next step. ESI-LCMS: m/z=375 [M+H₂O]⁺

Preparation of (10): A solution of 8 (13.2 g, 35.3 mmol), 9 (26.8 g, 42.3 mmol, Scheme 18) and K₂CO₃(19.5 g, 141.0 mmol) in dry THF (160 mL) and D20 (53 mL) was stirred at r.t. 17 h. LCMS showed most of 8 was consumed. The product was extracted with EA (2500 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by c.c. (PE:EA=10:1˜1:2) to give product 10 (8.1 g, 11.8 mmol, 33.4% yield) as a white solid. ESI-LCMS m/z=682 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.42 (s, 1H), 7.69-7.71 (d, J=8.1 Hz, 1H), 5.78-5.79 (d, J=3.7 Hz, 1H), 5.65-5.67 (m, 1H), 5.59-5.63 (m, 4H), 4.29-4.35 (m, 2H), 3.97-3.99 (m, 1H), 1.15 (s, 18H), 0.87 (s, 9H), 0.07-0.08 (d, J=5.1 Hz, 6H). ³¹P-NMR (162 MHz, DMS O-d₆) δ 16.62.

Preparation of (11): To a round-bottom flask was added 10 (7.7 g, 11.1 mmol) in a mixture of HCOOH (80 mL) and H₂O (80 mL). The reaction mixture was stirred at 40° C. for 3 h. LCMS showed the 10 was consumed completely. The reaction mixture was adjusted the pH=7.0 with con.NH₃.H₂O (100 mL). Then the mixture was extracted with DCM (100 mL*3). The combined DCM layer was dried over Na₂SO₄. Filtered and filtrate was concentrated to give crude which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/2 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. To give product 11 (5.5 g, 9.6 mmol, 86.1% yield) as a white solid. ESI-LCMS m/z=568 [M+H]v; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.42 (s, 1H, exchanged with D₂O), 7.62-7.64 (d, J=8.1, 1H), 5.81-5.82 (d, J=4.3, 1H), 5.58-5.66 (m, 5H), 5.52-5.53 (d, J=6.6, 1H), 4.34-4.37 (m, 1H), 4.09-4.13 (m, 1H), 3.94-3.96 (t, J=9.7, 1H), 1.15 (s, 18H), 0 (s, 1H). ³¹P NMR (162 MHz, DMSO-d₆) δ 17.16.

Preparation of Example 43 monomer: To a solution of 11 (5.3 g, 9.3 mmol) in DCM (40 mL) was added the DCI (1.1 g, 7.9 mmol), then CEP[N(ipr)₂]₂(3.4 g, 11.2 mmol) was added. The mixture was stirred at r.t. for 1 h. LCMS showed 11 consumed completely. The reaction mixture was washed with H₂O (50 mL*2) and brine (50 mL*1). Dried over Na₂SO₄and concentrated to give crude which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. The product was concentrated to give Example 43 monomer (6.2 g, 8.0 mmol, 85.6% yield) as a white solid. ESI-LCMS m/z=768 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 11.43 (s, 1H), 7.68-7.71 (m, 1H), 5.79-5.81 (m, 1H), 5.58-5.67 (m, 5H), 4.34-4.56 (m, 2H), 4.14-4.17 (m, 1H), 3.54-3.85 (m, 4H), 2.78-2.81 (m, 2H), 1.13-1.17 (m, 30H). ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.66, 149.16, 16.84, 16.56.

Example 44. Synthesis of Monomer

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Preparation of (2): To a solution of 1 (20.0 g, 66.4 mmol) in dry DMF (400 mL) was added sodium hydride (1.9 g, 79.7 mmol) for 30 min, then was added CD₃I (9.1 g, 79.7 mmol) in dry DCM (40 mL) at −20° C. for 5.5 hr. LCMS showed the reaction was consumed. The mixture was filtered and the clear solution was evaporated to dryness and was evaporated with CH₃OH. The crude was purified by silica gel column (SiO₂, DCM/MeOH=50:1˜10:1). This resulted in to give the product 2 (7.5 g, 23.5 mmol, 35.5% yield) as a solid. ESI-LCMS: m/z 319 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₃): δ=8.38 (m, 1H), 6.97 (m, 2H), 5.93-5.81 (m, 1H), 5.27-5.26 (d, J=4 Hz, 1H), 5.13-5.11 (m, 1H), 4.39-4.31 (m, 1H), 4.31-4.25 (m, 1H), 3.96-3.94 (m, 1H), 3.66-3.63 (m, 1H), 3.63-3.56 (m, 1H).

Preparation of (3): To a solution of 2 (7.5 g, 23.5 mmol) in dry DMF (75 mL) was added Imidazole (5.6 g, 82.3 mmol) and TBSCl (8.9 g, 58.8 mmol). The mixture was stirred at r.t. over night. LCMS showed 2 was consumed completely. The reaction was quenched with water (300 mL). The product was extracted into ethyl acetate (100 mL). The organic layer was washed with brine and dried over anhydrous Na₂SO₄. The solvent was removed to give the cured 3 (9.8 g) as a solid which used for the next step. ESI-LCMS: m/z 547 [M+H]⁺.

Preparation of (4): To a solution of 3 (9.8 g) in THF (40 mL) was added TFA (10 mL) and water (10 mL) at 0° C. The reaction mixture was stirred at 0° C. for 5 h. LC-MS showed 3 was consumed completely. Con. NH₄OH was added to the mixture at 0° C. to quench the reaction until the pH=7.5. The product was extracted into ethyl acetate (200 mL). The organic layer was washed with brine and dried over anhydrous Na₂SO₄. The solvent was removed to give the cured 4 (8.4 g) as a solid which used for the next step. ESI-LCMS: m/z 433 [M+H]⁺.

Preparation of (5): To a solution of 4 (8.4 g) in DCM/H₂O=2:1 (84 mL) was added DAIB (18.8 g, 58.4 mmol) and TEMPO (0.87 g, 5.8 mmol). The reaction mixture was stirred at 40° C. for 2 h. LCMS showed 4 was consumed. The mixture was diluted with DCM and water was added. The product was extracted with DCM. The organic layer was washed with brine and dried over anhydrous Na₂SO₄. The solution was then concentrated under reduced pressure. This resulted in to give 5 (14.4 g) as a white solid. ESI-LCMS: m/z 447 [M+H]⁺.

Preparation of (6): To a solution of 5 (14.4 g) in toluene (90 mL) and methanol (60 mL) was added 2 M TMSCHN₂(8.9 g, 78.1 mmol) till the yellow color not disappear at r.t. for 10 min. LCMS showed 5 was consumed. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=65/35 Detector, UV 254 nm. This resulted in to give the product 6 (3.5 g, 7.6 mmol, 32.3% yield over three steps, 70% purity) as a white solid. ESI-LCMS: m/z 461 [M+H]⁺.

Preparation of (7): To the solution of 6 (3.5 g, 7.6 mmol) in dry THF/MeOD/D₂O=10/2/1 (45 mL) was added NaBD₄(0.96 g, 22.8 mmol). And the reaction mixture was stirred at r.t for 2.5 hr. After completion of reaction, the resulting mixture was added CH₃COOD to pH=7, after addition of water, the resulting mixture was extracted with EA (100 mL). The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give 7 (3.3 g) which was used for the next step. ESI-LCMS: m/z 435 [M+H]⁺.

Preparation of (8): To a solution of 7 (3.3 g) in dry DCM (30 mL) was added pyridine (5.9 g, 74.5 mmol) and iBuCl (2.4 g, 22.4 mmol) in DCM (6 mL) under ice bath. The reaction mixture was stirred at 0° C. for 2.5 hr. LCMS showed 7 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=87/13; Detector, UV 254 nm. This resulted in to give the crude 8 (1.6 g, 2.8 mmol, 36.8% yield over two steps) as a white solid. ESI-LCMS: m/z 575 [M+H]⁺.

Preparation of (9): To a solution of 8 (1.6 g, 2.8 mmol) in H₂O/dioxane=1:1 (30 ml) was added K₂CO₃(772.8 mg, 5.6 mmol) and DABCO (739.2 mg, 2.9 mmol). The reaction mixture was stirred at 50° C. for 3 hr. LCMS showed 8 was consumed. The mixture was diluted with EA and water was added. The product was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated to give 9 (1.8 g) which was used for the next step. ESI-LCMS: m/z 557 [M+H]⁺.

Preparation of (10): To a solution of 9 (1.8 g) in pyridine (20 mL) and was added 2 M NaOH (MeOH/H₂O=4/1) (5 mL) at 0° C. for 1 h. LCMS showed 9 was consumed. The mixture was added saturated NH₄Cl till pH=7.5. The mixture was diluted with water and EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. This resulted in to give the product 10 (1.5 g) as a white solid which was used for the next step. ESI-LCM S: m/z 487 [M+H]⁺.

Preparation of (11): To a stirred solution of 10 (1.5 g) in pyridine (20 mL) were added DMTrCl (1.1 g, 3 mmol) at r.t. And the reaction mixture was stirred at r.t for 2.5 hr. With ice-bath cooling, the reaction was quenched with water and the product was extracted into EA. The organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=7/3 Detector, UV 254 nm. This resulted in to give the product 11 (1.9 g, 2.4 mmol, 85.7% yield over two steps) as a white solid. ESI-LCMS: m/z 789.3 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.10 (m, 1H), 11.63 (m, 1H), 8.20 (m, 1H), 7.35-7.33 (m, 2H), 7.29-7.19 (m, 7H), 6.86-6.83 (m, 4H), 5.89-5.88 (d, J=4 Hz, 1H), 4.40-4.28 (m, 2H), 3.72 (m, 6H), 2.81-2.76 (m, 1H), 1.13-1.11 (m, 6H), 0.80 (m, 9H), 0.05-0.01 (m, 7H).

Preparation of (12): To a solution of 11 (1.9 g, 2.4 mmol) in THF (20 mL) was added 1 M TBAF solution (3 mL). The reaction mixture was stirred at r.t. for 1.5 h. LCMS showed 11 was consumed completely. Water (100 mL) was added. The product was extracted with EA (50 mL) and the organic layer was washed with brine and dried over Na₂SO₄. Then the organic layer was concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=58/42; Detector, UV 254 nm. This resulted in to give 12 (1.5 g, 2.2 mmol, 91.6% yield) as a white solid. ESI-LCMS: m/z 675.3 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.09 (m, 1H), 11.60 (m, 1H), 8.14 (m, 1H), 7.35-7.27 (m, 2H), 7.25-7.20 (m, 7H), 6.85-6.80 (m, 4H), 5.96-5.94 (d, J=8 Hz, 1H), 5.26-5.24 (m, 1H), 4.35-4.28 (m, 2H), 3.72 (m, 6H), 3.32 (m, 1H), 2.79-2.72 (m, 1H), 1.13-1.11 (m, 6H).

Preparation of Example 44 monomer: To a suspension of 11 (1.5 g, 2.2 mmol) in DCM (15 mL) was added DCI (220.8 mg, 1.9 mmol) and CEP[N(iPr)₂]₂(795.7 mg, 2.6 mmol) under N₂pro. The mixture was stirred at r.t. for 2 h. LCMS showed 11 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1; Detector, UV 254 nm. This resulted in to give Example 44 monomer (1.6 g, 1.8 mmol, 83% yield) as a white solid. ESI-LCMS: m/z 875 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 12.12 (m, 1H), 11.60 (m, 1H), 8.15 (m, 1H), 7.37-7.29 (m, 2H), 7.27-7.20 (m, 7H), 6.86-6.81 (m, 4H), 5.94-5.88 (m, 1H), 4.54-4.51 (m, 2H), 4.21-4.20 (m, 1H), 3.73-3.54 (m, 10H), 2.80-2.75 (m, 1H), 2.61-2.58 (m, 1H), 1.19-1.11 (m, 19H). ³¹P-NMR (162 MHz, DMSO-d₆): δ=149.77, 149.71.

Example 45. Synthesis of Monomer

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Preparation of (2): To a solution of 1 (50.0 g, 99.2 mmol) and 1a (11.3 g, 119.0 mmol) in ACN (500.0 mL). Then added BSA (53.2 g, 218.0 mmol) under N₂Pro. The mixture was stirred at 50° C. for 1 h until the solution was clear. Then cool down to 0° C. and dropped TMSOTf (26.4 g, 119.0 mmol). The mixture was stirred at 75° C. for 1 h, TLC showed 1 was consumed completely. The reaction was quenched by sodium bicarbonate solution at 0° C., then the solution was diluted with EA, washed with H₂O twice. The solvent was concentrated under reduced pressure and the crude 2 (60.1 g) was used for next step. ESI-LCMS: m/z 540.2 [M+H]⁺.

Preparation of (3): To a solution of 2 (60.1 g) in CH₃NH₂/ethanol (500.0 mL). The mixture was stirred at 25° C. for 2 h. TLC showed 2 was consumed completely. The solvent was concentrated under reduced pressure and the residue was purified by c.c. (MeOH:DCM=50:1˜10:1) to give 3 (22.0 g, 96.9 mmol, 97.3% yield over two steps). ESI-LCMS: m/z 228.0 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 8.01-7.98 (m, 1H), 7.43-7.38 (m, 1H), 6.37-6.35 (m, 1H), 6.27-6.23 (m, 1H), 6.03 (d, J=3.5 Hz, 1H), 5.39 (d, J=4.2 Hz, 1H), 5.11 (t, J=5.1 Hz, 1H), 5.03 (d, J=5.1 Hz, 1H), 3.98-3.95 (m, 2H), 3.91-3.88 (m, 1H), 3.74-3.57 (m, 2H).

Preparation of (4): To a solution of 3 (22.0 g, 96.9 mmol) in pyridine (250.0 mL), TrtCl (30.7 g, 110.5 mmol) was added. The mixture was stirred at 25° C. for 24 h. TLC showed 3 was consumed completely, H₂O was added to the mixture. Then filtered and the filtrate diluted with EA, the organic layer was washed with NaHCO₃and brine. The solvent was concentrated under reduced pressure and then purified by c.c. (PE/EA=5:1˜0:1) to give 4 (38.8 g, 82.5 mmol, 85.1% yield) as a white solid. ESI-LCMS: m/z 470.1 [M+H]⁺.

Preparation of (5): To a solution of 4 (38.8 g, 82.5 mmol) in DMF (500.0 mL), collidine (10.0 g, 107.3 mmol), TrtCl (27.6 g, 99.1 mmol) were added followed by AgNO₃(18.0 g, 105.1 mmol). The mixture was stirred at 25° C. for 4 h. TLC showed 4 was consumed completely. Then filtered and the filtrate diluted with EA. The organic layer was washed with NaHCO₃and brine. The solvent was concentrated under reduced pressure and then purified by c.c. (PE/EA=5:1˜1:1) to give a mixture of 5 (52.3 g, 73.5 mmol, 86.3% yield) as white solid. ESI-LCMS: m/z 711.1 [M+H]⁺.

Preparation of (6): To a solution of 5 (52.3 g, 73.5 mmol) in DCM (500.0 mL), DMAP (8.9 g, 73.5 mmol), TEA (14.9 g, 147.3 mmol, 20.6 mL) were added, cool down to 0° C., TfCl (16.1 g, 95.6 mmol) dissolved in DCM (100.0 mL) were dropped. The mixture was stirred at 25° C. for 1 h. TLC showed 5 was consumed completely. Then filtered and the solution diluted with EA. The organic layer was washed with NaHCO₃and brine. The solvent was concentrated under reduced pressure to get crude 6 (60.2 g) as a brown solid. ESI-LCMS: m/z 844.2 [M+H]⁺.

Preparation of (7): To a solution of 6 (60.2 g) in DMF (500.0 mL), KOAc (36.1 g, 367.8 mmol) were added, The mixture was stirred at 25° C. for 14 h and 50° C. for 3 h, TLC showed 6 was consumed completely. Then filtered and the solution diluted with EA. The organic layer was washed with H₂O and brine. The solvent was concentrated under reduced pressure, residue was purified by c.c. (PE/EA=5:1˜1:1) to give 7 (28.0 g, 39.3 mmol, 53.5% yield) as yellow solid. ESI-LCMS: m/z 710.2 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.37-7.25 (m, 33H), 6.34-6.31 (m, 2H), 6.13-6.10 (m, 1H), 5.08 (d, J=4.2 Hz, 1H), 3.99 (d, J=7.6 Hz, 1H), 3.74 (s, 1H), 3.12 (t, J=9.2 Hz, 1H), 2.72-2.69 (m, 1H).

Preparation of (8): To a solution of 7 (28.0 g, 39.3 mmol) in DCM (300.0 mL), DAST (31.6 g, 196.6 mmol) was added at 0° C., the mixture was stirred at 25° C. for 16 h, TLC showed 7 was consumed completely. Then the solution was diluted with EA, washed with NaHCO₃twice, the solvent was removed under reduced pressure, residue was purified by c.c. (PE/EA=5:1˜3:1) to give 8 (5.0 g, 7.0 mmol, 17.8% yield) as a white solid. ESI-LCMS: m/z 748.2 [M+2NH₄]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.57-7.18 (m, 35H), 6.30 (d, J=8.8 Hz, 1H), 6.00 (d, J=19.5 Hz, 1H), 5.92-5.88 (m, 1H), 4.22-4.17 (m, 2H), 3.94 (s, 0.5H), 3.80 (s, 0.5H), 3.35-3.31 (m, 1H), 3.14-3.10 (m, 1H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−193.54.

Preparation of (9): To a solution of 8 (5.0 g, 7.0 mmol) in DCM (60.0 mL) was added DCA (3.6 mL) and TES (15.0 mL). The mixture was stirred at 20° C. for 1 h, TLC showed 8 was consumed completely. Then the solution was concentrated under reduced pressure, the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=0/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=0/1; Detector, UV 254 nm. This resulted in to give 9 (1.6 g, 6.9 mmol, 98.5% yield) as a white solid. ESI-LCMS: m/z 229.9 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 8.06-8.04 (m, 1H), 7.48-7.43 (m, 1H), 6.39 (d, J=9.0 Hz, 1H), 6.31-6.27 (m, 1H), 6.16-6.11 (m, 1H), 5.63 (s, 1H), 5.26 (s, 1H), 4.95-4.81 (m, 1H), 4.20-411 (m, 1H), 3.95 (d, J=8.2 Hz, 1H), 3.84 (d, J=12.4 Hz, 1H), 3.64 (d, J=12.1 Hz, 1H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−201.00.

Preparation of (10): To a solution of 9 (1.6 g, 6.9 mmol) in pyridine (20.0 mL) was added DMTrCl (3.5 g, 10.5 mmol) at 20° C. and stirred for 1 h. TLC showed 9 was consumed completely. Water was added and extracted with EA, the organic layer was washed with NaHCO₃and brine. Then the solution was concentrated under reduced pressure and the residue was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1; Detector, UV 254 nm. This resulted in to give 10 (2.2 g, 4.2 mmol, 60.8% yield) as a white solid. ESI-LCMS: m/z 530.1 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.93-7.91 (m, 1H), 7.47-7.23 (m, 10H), 6.91-6.89 (m, 4H), 6.41 (d, J=8.8 Hz, 1H), 6.13 (d, J=18.8 Hz, 1H), 6.00-5.96 (m, 1H), 5.68 (d, J=6.6 Hz, 1H), 5.01 (d, J=4.2 Hz, 0.5H), 4.88 (d, J=4.2 Hz, 0.5H), 4.42-4.31 (m, 1H), 4.10-4.08 (m, 1H), 3.74 (s, 6H), 3.40-3.34 (m, 2H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−199.49.

Preparation of Example 45 monomer: To a solution of 10 (2.2 g, 4.2 mmol) in DCM (20.0 mL) was added DCI (415 mg, 3.5 mmol) and CEP (1.5 g, 4.9 mmol) under N₂pro. The mixture was stirred at 20° C. for 0.5 h. TLC showed 10 was consumed completely. The product was extracted with DCM, the organic layer was washed with H₂O and brine. Then the solution was concentrated under reduced pressure and the residue was purified by cc (PE/EA=5:1˜1:1) and Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 45 monomer (2.1 g, 3.0 mmol, 73.1% yield) as a white solid. ESI-ESI-LCMS: m/z 732.2 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.98-7.92 (m, 1H), 7.42-7.24 (m, 10H), 6.91-6.85 (m, 4H), 6.43-6.39 (m, 1H), 6.18-6.11 (m, 1H), 6.01-5.97 (m, 1H), 5.22-5.19 (m, 0.5H), 5.09-5.06 (m, 0.5H), 4.73-4.52 (m, 1H), 4.21-4.19 (m, 1H), 3.79-3.62 (m, 7H), 3.57-3.47 (m, 4H), 3.32-3.28 (m, 1H), 2.75-2.58 (m, 1H), 1.13-0.92 (m, 12H); ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−196.82, −196.84, −197.86, −197.88; ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.88, 149.83, 149.39, 149.35.

Example 46. Synthesis of Monomer

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Preparation of (2): To the solution of Bromobenzene (2.1 g, 13.6 mmol) in dry THF (15 mL) was added 1.6 M n-BuLi (7 mL, 11.8 mmol) drop wise at −78° C. The mixture was stirred at −78° C. for 0.5 h. Then the 1 (3.0 g, 9.1 mmol, Wang, Guangyi et al, Journal of Medicinal Chemistry, 2016, 59(10), 4611-4624) was dissolved in THF (15 mL) and added to the mixture drop wise with keeping at −78° C. Then the reaction mixture was stirred at −78° C. for 1 hr. LC-MS showed 1 was consumed completely. Then the solution was added to saturated aq. NH₄Cl and the resulting mixture was extracted with EA. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=3/2; Detector, UV 254 nm. This resulted in to give 2 (3.0 g, 7.3 mmol, 80.0%) as a white solid. ESI-LCMS: m/z 391 [M−OH]⁻.

Preparation of (3): To the solution of 2 (4.0 g, 9.8 mmol) in DCM (40 mL) was added TES (1.9 g, 11.7 mmol) at −78° C., and the mixture was added BF₃.OEt₂(2.1 g, 14.7 mmol) drop wise at −78° C. The mixture was stirred at −40° C. for 1 hr. LC-MS showed 2 was consumed completely. Then the solution was added to saturated aq. NaHCO₃and the resulting mixture was extracted with DCM. The combined organic layer was washed with water and brine, dried over Na₂SO₄, and concentrated under reduced pressure to give a residue which was purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=2/3 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=4/1 within 25 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=7/3; Detector, UV 254 nm. This resulted in to give 3 (3.1 g, 5.3 mmol, 54.0%) as a water clear oil. ESI-LCMS: m/z 410 [M+H₂O]⁺; ¹H-NMR (400 MHz, CDCl₃: δ 7.48-7.25 (m, 15H), 5.24-5.13 (m, 1H), 4.93-4.74 (m, 1H), 4.74-4.46 (m, 4H), 4.37-4.25 (m, 1H), 4.19-4.05 (m, 1H), 4.00-3.80 (m, 1H), 3.77-3.63 (m, 1H). ¹⁹F-NMR (376 MHz, CDCl₃): δ−196.84.

Preparation of (4): To the solution of 3 (2.1 g, 5.3 mmol) in dry DCM (20 mL) was added 1 M BCl₃(25 mL, 25.5 mmol) drop wise at −78° C., and the reaction mixture was stirred at −78° C. for 0.5 hr. LC-MS showed 3 was consumed completely. After completion of reaction, the resulting mixture was poured into water (50 mL). The solution was extracted with DCM and the combined organic layer was concentrated under reduced pressure to give a crude. The crude in MeOH (4 mL) was added 1 M NaOH (15 mL), and the mixture was stirred at r.t for 5˜10 min. The mixture was extracted with EA. The combined organic layer was washed with brine, dried over Na₂SO₄, and concentrated under reduced pressure to give a residue which was purified by silica gel column chromatography (eluent, DCM:MeOH=40:1˜15:1) to give 4 (1.0 g, 4.7 mmol, 88.6%) as a water clear oil. ESI-LCMS: m/z 211 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.58-7.19 (m, 5H), 5.41 (d, J=6.1 Hz, 1H), 5.09-5.95 (m, 1H), 5.95-4.84 (m, 1H), 4.82-4.59 (m, 1H), 4.14-3.94 (m, 1H), 3.89-3.80 (m, 1H), 3.78-3.67 (m, 1H), 3.65-3.53 (m, 1H). ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−196.46.

Preparation of (5): To a solution of 4 (1.0 g, 4.7 mmol) in Pyridine (10 mL) was added DMTrCl (2.0 g, 5.7 mmol). The reaction mixture was stirred at r.t. for 2 hr. LCMS showed 4 was consumed and water (100 mL) was added. The product was extracted with EA (100 mL) and the organic layer was washed with brine and dried over Na₂SO₄and concentrated to give the crude. The crude was further purified by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=9/1; Detector, UV 254 nm. This resulted in to give 5 (2.1 g, 4.1 mmol, 87.0%) as a red oil. ESI-LCMS: m/z 513 [M−H]⁻; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.56-7.16 (m, 14H), 6.94-9.80 (m, 4H), 5.45 (d, J=6.3 Hz, 1H), 5.21-5.09 (m, 1H), 4.89-4.68 (m, 1H), 4.18-4.03 (m, 2H), 3.74 (s, 6H), 3.33-3.29 (m, 1H), 3.26-3.17 (m, 1H). ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−194.08.

Preparation of Example 46 monomer: To a suspension of 5 (2.1 g, 4.1 mmol) in DCM (20 mL) was added DCI (410 mg, 3.4 mmol) and CEP[N(iPr)₂]₂(1.5 g, 4.9 mmol). The mixture was stirred at r.t. for 1 h. LC-MS showed 5 was consumed completely. The solution was washed with water twice and washed with brine and dried over Na₂SO₄. Then concentrated to give the crude. The crude was purification by Flash-Prep-HPLC with the following conditions (IntelFlash-1): Column, C18 silica gel; mobile phase, CH₃CN/H₂O (0.5% NH₄HCO₃)=1/1 increasing to CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0 within 20 min, the eluted product was collected at CH₃CN/H₂O (0.5% NH₄HCO₃)=1/0; Detector, UV 254 nm. This resulted in to give Example 46 monomer (2.1 g, 2.9 mmol, 70.0%) as a white solid. ESI-LCMS: m/z 715 [M+H]⁺; ¹H-NMR (400 MHz, DMSO-d₆): δ 7.59-7.16 (m, 14H), 6.94-9.80 (m, 4H), 5.26-5.12 (m, 1H), 5.06-4.77 (m, 1H), 4.50-4.20 (m, 1H), 4.20-4.10 (m, 1H), 3.83-3.63 (m, 7H), 3.59-3.37 (m, 4H), 3.25-3.13 (m, 1H), 2.80-2.66 (m, 1H), 2.63-2.53 (m, 1H), 1.18-0.78 (m, 12H). ¹⁹F-NMR (376 MHz, DMSO-d₆): δ−194.40, −194.42, −194.50, −194.53. ³¹P-NMR (162 MHz, DMSO-d₆): δ 149.38, 149.30, 149.02, 148.98.

Example 47. Deuterated Vinyl Phosphonate Improves Potency of siNA

This example investigates whether a deuterated vinyl phosphonate improves potency of siNA in an AAV-HBV mouse. AAV-HBV mice were subcutaneously injected with vehicle, ds-siNA-0165 (e.g., siNA without a deuterated vinyl phosphonate), or ds-siNA-0144 (e.g., siNA with a deuterated vinyl phosphonate). For siNA-treated AAV-HBV mice, AAV-HBV mice were subcutaneously injected with a single dose of 5 mg/kg of siNA. As shown in FIG. 11, siNA molecules having 2′-fluoro nucleotides at positions 3, 7-9, 12, and 17 from the 5′ end of the sense strand and 2′-fluoro nucleotides at positions 2 and 14 from the 5′ end of the antisense strand resulted in at least a 0.5-log reduction in HBsAg, with the greatest reduction in HBsAg found in mice treated with the deuterated vinylphosphonate siNA (ds-siNA-0165). Thus, FIG. 11 demonstrates that the presence of a deuterated vinyl phosphonate improves potency of the siNA.

Example 48. Deuterated Vinyl Phosphonate Results in a Greater Reduction in Serum HBsAg

AAV-HBV mice were subcutaneously injected with vehicle, ds-siNA-0163 (e.g., siNA without a vinyl phosphonate), ds-siNA-0122 (e.g., siNA with a vinyl phosphonate), or ds-siNA-0123 (e.g., siNA with a deuterated vinyl phosphonate). For siNA-treated AAV-HBV mice, AAV-HBV mice were subcutaneously injected with a single dose of 5 mg/kg of siNA. As shown in FIG. 12, siNA molecules having 2′-fluoro nucleotides at positions 7, 9-11 from the 5′ end of the sense strand and 2′-fluoro nucleotides at positions 2 and 14 from the 5′ end of the antisense strand resulted in at least a 0.5-log reduction in HBsAg, with the greatest reduction in HBsAg found in mice treated with the deuterated vinylphosphonate siNA (ds-siNA-0165). Thus, FIG. 12 demonstrates that the presence of a deuterated vinyl phosphonate improves potency of the siNA, as compared to the siNA without a vinyl phosphonate and the siNA with the vinyl phosphonate.

Example 49: Synthesis of 5′ End Cap Monomer

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Preparation of (2): 1 (15 g, 58.09 mmol) and tert-butyl N-methylsulfonylcarbamate (17.01 g, 87.13 mmol) were dissolved in THF (250 mL), and PPh₃(30.47 g, 116.18 mmol) was added followed by dropwise addition of DIAD (23.49 g, 116.18 mmol, 22.59 mL) at 0° C. The reaction mixture was stirred at 15° C. for 12 h. Upon completion as monitored by TLC (DCM/MeOH=10/1), the reaction mixture was evaporated to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 120 g SepaFlash® Silica Flash Column, Eluent of 0˜20% MeOH/DCM gradient @ 60 mL/min) to give 2 (6.9 g, 24.28% yield) as a white solid. ESI-LCMS: m/z 457.9 [M+Na]⁺; ¹H NMR (400 MHz, CDCl₃) δ=8.64 (br s, 1H), 7.64 (d, J=8.2 Hz, 1H), 5.88 (d, J=1.9 Hz, 1H), 5.80 (dd, J=2.2, 8.2 Hz, 1H), 4.19-4.01 (m, 3H), 3.90 (dt, J=5.5, 8.2 Hz, 1H), 3.82-3.78 (m, 1H), 3.64 (s, 3H), 3.32 (s, 3H), 2.75 (d, J=8.9 Hz, 1H), 1.56 (s, 9H).

Preparation of (3): 2 (6.9 g, 15.85 mmol) was dissolved in MeOH (40 mL), and a solution of HCl/MeOH (4 M, 7.92 mL) was added dropwise. The reaction mixture was stirred at 15° C. for 12 h, and then evaporated to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0-10% MeOH/DCM gradient @ 40 mL/min) to give 3 (2.7 g, 50.30% yield) as a white solid. ESI-LCMS: m/z 336.0 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=9.20 (br s, 1H), 7.52 (d, J=8.1 Hz, 1H), 5.75 (d, J=3.8 Hz, 1H), 5.64 (dd, J=2.0, 8.1 Hz, 1H), 5.60-5.52 (m, 1H), 4.15-3.99 (m, 1H), 3.96-3.81 (m, 2H), 3.46 (s, 3H), 3.44-3.35 (m, 1H), 3.34-3.26 (m, 1H), 2.92 (s, 3H).

Preparation of (Example 49 monomer): To a solution of 3 (2.14 g, 6.38 mmol) in DCM (20 mL) was added dropwise 3-bis(diisopropylamino)phosphanyloxypropanenitrile (2.50 g, 8.30 mmol, 2.63 mL) at 0° C., followed by 1H-imidazole-4, 5-dicarbonitrile (829 mg, 7.02 mmol), and the mixture was purged under Ar for 3 times. The reaction mixture was stirred at 15° C. for 2 h. Upon completion, the mixture was quenched with 5% NaHCO₃(20 mL), extracted with DCM (20 mL*2), washed with brine (15 mL), dried over Na₂SO₄, filtered, and evaporated to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0˜10% (Phase B: i-PrOH/DCM=1/2)/Phase A: DCM with 5% TEA gradient @ 40 mL/min) to give Example 49 monomer (1.73 g, 48.59% yield) as a white solid. ESI-LCMS: m/z 536.3 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=7.58-7.48 (m, 1H), 5.83-5.78 (m, 1H), 5.71-5.64 (m, 1H), 4.40-4.29 (m, 1H), 4.19-4.07 (m, 1H), 3.98 (td, J=5.3, 13.3 Hz, 1H), 3.90-3.78 (m, 2H), 3.73-3.59 (m, 3H), 3.41 (d, J=14.8 Hz, 4H), 2.92 (br d, J=7.0 Hz, 3H), 2.73-2.63 (m, 2H), 1.23-1.11 (m, 12H); ³¹P NMR (162 MHz, CD₃CN) δ=149.81, 150.37.

Example 50: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of t (10 g, 27.16 mmol) in DMF (23 mL) were added imidazole (3.70 g, 54.33 mmol) and TBSCl (8.19 g, 54.33 mmol) at 25° C. The mixture was stirred at 25° C. for 2 hr. Upon completion, the reaction mixture was diluted with H₂O (20 mL) and extracted with EA (30 mL*2). The combined organic layers were washed with brine (20 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give 2 (13 g, 99.2 yield) as a white solid. ES-LCMS: m/z 482.9 [M+H]⁺.

Preparation of (3): To a solution of 2 (35.00 g, 72.56 mmol) in DMF (200 mL) was added NaN₃(14.15 g, 217.67 mmol). The mixture was stirred at 60° C. for 17 h. Upon completion, the reaction mixture was diluted with H₂O (200 mL) and extracted with EA (200 mL*2). The combined organic layers were washed with brine (100 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give 3 (31.8 g, crude) as a yellow solid. ESI-LCMS: m/z 398.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.21 (d, J=1.3 Hz, 1H), 7.50 (d, J=8.1 Hz, 1H), 5.57 (d, J=4.5 Hz, 1H), 5.46 (dd, J=2.1, 8.0 Hz, 1H), 4.06 (t, J=5.2 Hz, 1H), 3.81-3.64 (m, 2H), 3.44-3.30 (m, 2H), 2.31-2.25 (m, 3H), 0.65 (s, 9H), −0.13 (s, 6H).

Preparation of (4): To a solution of 3 (7 g, 17.61 mmol) in THF (60 mL) was added Pd/C (2 g) at 25° C. The reaction mixture was stirred at 25° C. for 3 h under H₂atmosphere (15 PSI). The reaction mixture was filtered, and the filtrate was concentrated to give 4 (5.4 g, 75.11% yield) as a gray solid. ESI-LCMS: m/z 372.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=7.93 (d, J=8.0 Hz, 1H), 5.81 (d, J=5.5 Hz, 1H), 5.65 (d, J=8.3 Hz, 1H), 4.28 (t, J=4.6 Hz, 1H), 3.88 (t, J=5.3 Hz, 1H), 3.74 (q, J=4.6 Hz, 1H), 3.31 (s, 3H), 2.83-2.66 (m, 2H), 0.88 (s, 9H), 0.09 (s, 6H).

Preparation of (5): To a solution of 4 (3 g, 8.08 mmol) in DCM (30 mL) was added TEA (2.45 g, 24.23 mmol, 3.37 mL) followed by dropwise addition of 3-chloropropane-1-sulfonyl chloride (1.50 g, 8.48 mmol, 1.03 mL) at 25° C. The reaction mixture was stirred at 25° C. for 18 h under N₂atmosphere. Upon completion, the reaction mixture was diluted with H₂O (50 mL) and extracted with DCM (50 mL*2). The combined organic layers were washed with brine (50 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure. The residue was purified by flash silica gel chromatography (ISCO®; 24 g SepaFlash® Silica Flash Column, Eluent of 0˜30% MeOH/DCM @ 50 mL/min) to give 5 (3.6 g, 84.44% yield) as a white solid. ESI-LCMS: m/z 512.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.42 (s, 1H), 7.75 (d, J=8.1 Hz, 1H), 7.49 (t, J=6.2 Hz, 1H), 5.83 (d, J=5.8 Hz, 1H), 5.70-5.61 (m, 1H), 4.33-4.23 (m, 1H), 3.95 (t, J=5.5 Hz, 1H), 3.90-3.78 (m, 1H), 3.73 (t, J=6.5 Hz, 2H), 3.30 (s, 3H), 3.26-3.12 (m, 4H), 2.14-2.02 (m, 2H), 0.88 (s, 9H), 0.11 (d, J=3.3 Hz, 6H).

Preparation of (6): To a solution of 5 (5 g, 9.76 mmol) in DMF (45 mL) was added DBU (7.43 g, 48.82 mmol, 7.36 mL). The mixture was stirred at 25° C. for 16 h. The reaction mixture was concentrated to give a residue, diluted with H₂O (50 mL) and extracted with EA (50 mL*2). The combined organic layers were washed with brine (50 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure. The residue was purified by flash silica gel chromatography (ISCO®; 24 g SepaFlash® Silica Flash Column, Eluent of 0˜80% EA/PE @ 40 mL/min) to give 6 (4.4 g, 89.06% yield) as a white solid. ESI-LCMS: m/z 476.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.43 (d, J=1.7 Hz, 1H), 7.72 (d, J=8.1 Hz, 1H), 5.82 (d, J=4.8 Hz, 1H), 5.67 (dd, J=2.1, 8.1 Hz, 1H), 4.22 (t, J=5.1 Hz, 1H), 3.99-3.87 (m, 2H), 3.33-3.27 (m, 6H), 3.09 (dd, J=6.6, 14.7 Hz, 1H), 2.26-2.16 (m, 2H), 0.88 (s, 9H), 0.10 (d, J=3.8 Hz, 6H).

Preparation of (7): To a solution of 6 (200 mg, 420.49 umol) in MeOH (2 mL) was added NH₄F (311.48 mg, 8.41 mmol, 20 eq), and the mixture was stirred at 80° C. for 2 h. The mixture was filtered and concentrated to give a residue, which was purified by flash silica gel chromatography (ISCO®; 4 g SepaFlash® Silica Flash Column, Eluent of 0˜50% MeOH/DCM @ 20 mL/min) to give 7 (120 mg, 76.60% yield) as a white solid. ESI-LCMS: m/z 362.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.37 (br s, 1H), 7.68 (d, J=8.1 Hz, 1H), 5.81 (d, J=4.6 Hz, 1H), 5.65 (d, J=8.0 Hz, 1H), 4.02 (q, J=5.6 Hz, 1H), 3.95-3.83 (m, 2H), 3.34 (s, 9H), 3.09 (dd, J=6.9, 14.6 Hz, 1H), 2.26-2.14 (m, 2H).

Preparation of (Example 50 monomer): To a solution of 7 (1.5 g, 4.15 mmol) in CH₃CN (12 mL) were added 3-bis(diisopropylamino)phosphanyloxypropanenitrile (1.63 g, 5.40 mmol, 1.71 mL) and 1H-imidazole-4,5-dicarbonitrile (539.22 mg, 4.57 mmol) in one portion at 0° C. The reaction mixture was gradually warmed to 25° C. The reaction mixture was stirred at 25° C. for 2 h under N₂atmosphere. Upon completion, the reaction mixture was diluted with NaHCO₃(20 mL) and extracted with DCM (20 mL*2). The combined organic layers were washed with brine (20 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue, which was purified by flash silica gel chromatography (ISCO®; 12 g SepaFlash® Silica Flash Column, Eluent of 0˜85% EA/PE with 0.5% TEA @ 30 mL/min to give Example 50 monomer (800 mg, 33.6% yield) as a white solid. ESI-LCMS: m/z 562.3 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=9.28 (br s, 1H), 7.55 (br dd, J=8.3, 12.8 Hz, 1H), 5.86 (br d, J=3.9 Hz, 1H), 5.65 (br d, J=8.0 Hz, 1H), 4.33-4.06 (m, 2H), 4.00-3.89 (m, 1H), 4.08-3.86 (m, 1H), 3.89-3.72 (m, 4H), 3.43 (br d, J=15.1 Hz, 6H), 3.23-3.05 (m, 3H), 2.69 (br s, 2H), 2.36-2.24 (m, 2H), 1.26-1.10 (m, 12H); ³¹P NMR (162 MHz, CD₃CN) δ=149.94, 149.88.

Example 51: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (30 g, 101.07 mmol, 87% purity) in CH₃CN (1.2 L) and Py (60 mL) were added 12 (33.35 g, 131.40 mmol, 26.47 mL) and PPh₃(37.11 g, 141.50 mmol) in one portion at 10° C. The reaction was stirred at 25° C. for another 48 h. The mixture was diluted with aq.Na₂S₂O₃(300 mL) and aq.NaHCO₃(300 mL), concentrated to remove CH₃CN, and then extracted with EtOAc (300 mL*3). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 330 g SepaFlash® Silica Flash Column, Eluent of 0˜60% Methanol/Dichloromethane gradient @ 100 mL/min) to give 2 (28.2 g, 72.00% yield, 95% purity) as a brown solid. ESI-LCMS: m/z 369.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.43 (s, 1H), 7.68 (d, J=8.1 Hz, 1H), 5.86 (d, J=5.5 Hz, 1H), 5.69 (d, J=8.1 Hz, 1H), 5.46 (d, J=6.0 Hz, 1H), 4.08-3.96 (m, 2H), 3.90-3.81 (m, 1H), 3.60-3.51 (m, 1H), 3.40 (dd, J=6.9, 10.6 Hz, 1H), 3.34 (s, 3H).

Preparation of (3): To a solution of 2 in DMF (90 mL) were added imidazole (4.25 g, 62.48 mmol) and TBSCl (6.96 g, 46.18 mmol) in one portion at 15° C. The mixture was stirred at 15° C. for 6 h. The reaction mixture was quenched by addition of H₂O (300 mL) and extracted with EtOAc (300 mL*2). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give 3 (13.10 g, crude) as a white solid. ESI-LCMS: m/z 483.0 [M+H]⁺.

Preparation of (4): To a solution of 3 (10 g, 20.73 mmol) in MeOH (20 mL), H₂O (80 mL), and dioxane (20 mL) was added Na₂SO₃(15.68 g, 124.38 mmol), and the mixture was stirred at 80° C. for 24 h. The reaction mixture was concentrated under reduced pressure to remove MeOH. The aqueous layer was extracted with EtOAc (80 mL*2) and concentrated under reduced pressure to give a residue. The residue was triturated with MeOH (100*3 mL) to give 4 (9.5 g, 94.48% yield, 90% purity) as a white solid. ESI-LCMS: m/z 437.0 [M+H]⁺.

Preparation of (5): To a solution of 4 (11 g, 21.42 mmol, 85% purity) in DCM (120 mL) was added DMF (469.65 mg, 6.43 mmol, 494.37 uL) at 0° C., followed by dropwise addition of oxalyl dichloride (13.59 g, 107.10 mmol, 9.37 mL). The mixture was stirred at 20° C. for 2 h. The reaction mixture was quenched by addition of water (60 mL) and the organic layer 5 (0.1125 M, 240 mL DCM) was used directly for next step. (This reaction was set up for two batches and combined) ESI-LCMS: m/z 455.0 [M+H]⁺.

Preparation of (6): 5 (186.4 mL, 0.1125 M in DCM) was diluted with DCM (60 mL) and treated with methylamine (3.26 g, 41.93 mmol, 40% purity). The mixture was stirred at 20° C. for 2 h. The reaction mixture was concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0˜10%, MeOH/DCM gradient @ 40 mL/min) to give AGS-9-3-008 (1.82 g, 18.53% yield, 96% purity) as a yellow solid. ESI-LCMS: m/z 472.0 [M+Na]⁺; ¹H NMR (400 MHz, CDCl₃) δ=9.08 (s, 1H), 7.31 (d, J=8.1 Hz, 1H), 5.78 (d, J=8.1 Hz, 1H), 5.57 (d, J=3.8 Hz, 1H), 4.61-4.48 (m, 1H), 4.41-4.27 (m, 2H), 4.13-4.03 (m, 1H), 3.46 (s, 3H), 3.43-3.33 (m, 2H), 2.78 (d, J=5.2 Hz, 3H), 0.92 (s, 9H), 0.13 (s, 6H).

Preparation of (7): To a solution of 6 (2.3 g, 5.12 mmol) in MeOH (12 mL) was added HCl/MeOH (4 M, 6.39 mL). The mixture was stirred at 20° C. for 2 h. The reaction mixture was concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 24 g SepaFlash® Silica Flash Column, Eluent of 0˜15%, MeOH/DCM gradient @ 30 mL/min) to give 7 (1.4 g, 79.98% yield) as a pink solid. ESI-LCMS: m/z 336.1 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=9.12 (s, 1H), 7.39 (d, J=8.0 Hz, 1H), 5.79 (d, J=3.3 Hz, 1H), 5.66 (dd, J=2.1, 8.2 Hz, 1H), 5.13 (s, 1H), 4.13 (t, J=4.0, 7.4 Hz, 1H), 4.07-4.02 (m, 1H), 3.87 (dd, J=3.3, 5.5 Hz, 1H), 3.47 (s, 3H), 3.43-3.37 (m, 2H), 2.65 (d, J=4.5 Hz, 3H).

Preparation of (Example 51 monomer): To a mixture of 7 (1.7 g, 5.07 mmol) and 4A MS (1.4 g) in MeCN (18 mL) was added 3-bis(diisopropylamino)phosphanyloxypropanenitrile (1.99 g, 6.59 mmol, 2.09 mL) at 0° C., followed by addition of 1H-imidazole-4,5-dicarbonitrile (658.57 mg, 5.58 mmol) in one portion at 0° C. The mixture was stirred at 20° C. for 2 h. Upon completion, the reaction mixture was quenched by addition of sat. NaHCO₃solution (20 mL) and diluted with DCM (40 mL). The organic layer was washed with sat. NaHCO₃(20 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by a flash silica gel column (0% to 5% i-PrOH in DCM with 5% TEA) to give Example 51 monomer (1.30 g, 46.68% yield) as a white solid. ESI-LCMS: m/z 536.2 [M+H]⁺; ¹H NMR (400 MHz, CD₃CN) δ=9.00 (s, 1H), 7.40 (d, J=8.0 Hz, 1H), 5.85-5.76 (m, 1H), 5.64 (d, J=8.0 Hz, 1H), 5.08 (d, J=5.0 Hz, 1H), 4.42-4.21 (m, 2H), 4.00 (td, J=4.6, 9.3 Hz, 1H), 3.89-3.61 (m, 4H), 3.47-3.40 (m, 4H), 3.37-3.22 (m, 1H), 2.71-2.60 (m, 5H), 1.21-1.16 (m, 11H), 1.21-1.16 (m, 1H); ³¹P NMR (162 MHz, CD₃CN) δ=150.07, 149.97

Example 52: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution of 1 (13.10 g, 27.16 mmol) in THF (100 mL) was added DBU (20.67 g, 135.78 mmol, 20.47 mL). The mixture was stirred at 60° C. for 6 h. Upon completion, the reaction mixture was quenched by addition of sat.NH₄Cl solution (600 mL) and extracted with EA (600 mL*2). The combined organic layers were washed with brine (100 ml), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 120 g SepaFlash® Silica Flash Column, Eluent of 0˜50% (Phase B: ethyl acetate:dichloromethane=1:1)/Phase A: petroleum ethergradient@ 45 mL/min) to give 2 (5.9 g, 60.1% yield) as a white solid. ESI-LCMS: m/z 355.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.61-11.30 (m, 1H), 7.76-7.51 (m, 1H), 6.04 (d, J=5.4 Hz, 1H), 5.75 (s, 1H), 5.73-5.67 (m, 1H), 4.78 (d, J=4.9 Hz, 1H), 4.41 (d, J=1.1 Hz, 1H), 4.30 (t, J=4.8 Hz, 1H), 4.22 (d, J=1.4 Hz, 1H), 4.13 (t, J=5.1 Hz, 1H), 4.06-3.97 (m, 1H), 3.94-3.89 (m, 1H), 3.82-3.75 (m, 1H), 3.33 (s, 3H), 3.30 (s, 2H), 1.17 (t, J=7.2 Hz, 1H), 0.89 (s, 9H), 0.16-0.09 (m, 6H).

Preparation of (3): To a solution of 2 (4 g, 11.28 mmol) in DCM (40 mL) was added Ru(II)-Pheox (214.12 mg, 338.53 umol) in one portion followed by addition of diazo(dimethoxyphosphoryl)methane (2.54 g, 16.93 mmol) dropwise at 0° C. under N₂. The reaction was stirred at 20° C. for 16 h. Upon completion, the reaction mixture was filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0˜4% MeOH/DCM@ 60 mL/min) to give 3 (5 g, 86.47% yield) as a red liquid. ESI-LCMS: m/z 477.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.46 (s, 1H), 7.49 (d, J=8.0 Hz, 1H), 6.01-5.87 (m, 1H), 5.75 (dd, J=2.0, 8.0 Hz, 1H), 4.58 (d, J=3.8 Hz, 1H), 4.23 (dd, J=3.8, 7.8 Hz, 1H), 3.80-3.68 (m, 6H), 3.30 (s, 3H), 1.65-1.46 (m, 2H), 1.28-1.16 (m, 1H), 0.91 (s, 9H), 0.10 (d, J=4.3 Hz, 6H); ³¹P NMR (162 MHz, DMSO-d₆) δ=27.5

Preparation of (4): To a mixture of 3 (2.8 g, 5.88 mmol) and NaI (1.76 g, 11.75 mmol) in CH₃CN (30 mL) was added chloromethyl 2,2-dimethylpropanoate (2.21 g, 14.69 mmol, 2.13 mL) at 25° C. The mixture was stirred at 80° C. for 40 h under Ar. The reaction mixture was filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 0˜50% Ethylacetate/Petroleum ether gradient @ 40 mL/min) to give 4 (2.1 g, 51.23% yield, 97% purity) as a yellow solid. ESI-LCMS: 677.3 [M+H]⁺.

Preparation of (5): A mixture of 4 (2.09 g, 3.09 mmol) in H₂O (1.5 mL) and HCOOH (741.81 mg, 15.44 mmol, 6 mL) was stirred at 15° C. for 40 h. Upon completion, the reaction mixture was quenched by saturated aq.NaHCO₃(300 mL) and extracted with EA (300 mL*2). The combined organic layers were washed with brine (300 mL), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 20 g SepaFlash® Silica Flash Column, Eluent of 0˜5% Methanol/Dichloromethane@ 45 mL/min) to give 5 (1.51 g, 85.19% yield) as a yellow solid. ESI-LCMS: 585.1 [M+Na]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.45 (d, J=1.8 Hz, 1H), 7.44 (d, J=8.2 Hz, 1H), 6.04 (d, J=7.5 Hz, 1H), 5.78-5.51 (m, 6H), 4.39 (t, J=4.4 Hz, 1H), 4.15 (dd, J=4.3, 7.4 Hz, 1H), 4.03 (q, J=7.1 Hz, 1H), 1.99 (s, 1H), 1.66 (dd, J=8.6, 10.8 Hz, 1H), 1.55-1.29 (m, 2H), 1.18 (d, J=2.0 Hz, 18H).

Preparation of (Example 52 monomer): To a solution of 5 (2.5 g, 4.44 mmol) in MeCN (30 mL) was added 3-bis(diisopropylamino)phosphanyloxypropanenitrile (1.74 g, 5.78 mmol, 1.84 mL) at 0° C., followed by 1H-imidazole-4,5-dicarbonitrile (577.36 mg, 4.89 mmol) in one portion under Ar. The mixture was gradually warmed to 20° C. and stirred at 20° C. for 1 h. The reaction mixture was quenched by addition of sat.NaHCO₃solution (50 mL) and diluted with DCM (250 mL). The organic layer was washed with sat.NaHCO₃solution (50 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by a flash silica gel column (0% to 50% EA/PE with 0.5% TEA) to give Example 52 monomer (1.85 g, 54.1% yield) as a white solid. ESI-LCMS: 785.2 [M+Na]⁺; ¹H NMR (400 MHz, CD₃CN) δ=9.18 (s, 1H), 7.31 (d, J=8.3 Hz, 1H), 6.06 (d, J=7.8 Hz, 1H), 5.72-5.60 (m, 5H), 4.85-4.76 (m, 1H), 4.27 (m, 1H), 3.93-3.64 (m, 4H), 3.41 (d, J=16.6 Hz, 3H), 2.80-2.62 (m, 2H), 1.76-1.49 (m, 3H), 1.23-1.19 (m, 30H); ³¹P NMR (162 MHz, CD₃CN) δ=150.66 (s), 150.30, 24.77, 24.66.

Example 53: Synthesis of 5′ End Cap Monomer

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Preparation of (2): To a solution oft (15 g, 137.43 mmol) in DCM (75 mL) were added BOC₂O (31.49 g, 144.30 mmol, 33.15 mL) and DMAP (839.47 mg, 6.87 mmol, 0.05 eq) at 0° C. The mixture was stirred at 20° C. for 16 hr, and concentrated under reduced pressure to give 2 (29.9 g, crude) as a yellow oil. ¹H NMR (400 MHz, CDCl₃) δ=3.23 (s, 3H), 3.16 (s, 3H), 1.51 (s, 9H).

Preparation of (3): To a solution of 2 (24.9 g, 118.99 mmol) in THF (250 mL) was added n-BuLi (2.5 M, 47.60 mL) dropwise at −78° C. under Ar and stirred at −78° C. for 1 hr. P-3 (17.19 g, 118.99 mmol, 12.83 mL) was added at 0° C. and stirred for 1 hr. The reaction mixture was quenched by saturated aq. NH₄Cl (100 mL), and then extracted with EA (100 mL*2). The combined organic layers were washed with brine (100 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0˜50 Ethyl acetate/Petroleum ethergradient @ 65 mL/min) to give 3 (7.1 g, 18.62% yield) as a yellow oil. ESI-LCMS: 339.9 [M+Na]⁺; ¹H NMR (400 MHz, CDCl₃) δ=4.12 (s, 1H), 4.08 (s, 1H), 3.83 (s, 3H), 3.81 (s, 3H), 3.22 (s, 3H), 1.51 (s, 9H).

Preparation of (5): To a mixture of 4 (15 g, 40.27 mmol) and PPTS (10.12 g, 40.27 mmol) in DMSO (75 mL) was added EDCI (23.16 g, 120.81 mmol) at 20° C. The mixture was stirred at 20° C. for 4 hr. The reaction mixture was diluted with water (150 mL) and extracted with EA (150 mL*2). The combined organic layers were washed with brine (150 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give 5 (12 g, crude) as a white solid. ESI-LCMS: 371.2[M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ=9.77 (s, 1H), 7.62 (d, J=8.1 Hz, 1H), 5.83-5.76 (m, 2H), 4.53 (d, J=4.3 Hz, 1H), 4.43 (br t, J=4.4 Hz, 1H), 3.95 (br t, J=4.7 Hz, 1H), 3.47-3.35 (m, 5H), 0.92 (s, 9H), 0.13 (d, J=5.8 Hz, 6H).

Preparation of (6): To a solution of P4 (8.02 g, 25.27 mmol) in THF (40 mL) was added n-BuLi (2.5 M, 8.42 mL) dropwise under Ar at −78° C., and the mixture was stirred at −78° C. for 0.5 hr. A solution of 4 (7.8 g, 21.05 mmol) in THF (40 mL) was added dropwise. The mixture was allowed to warm to 0° C. and stirred for another 2 hr. The reaction mixture was quenched by saturated aq. NH₄Cl solution (80 mL) and extracted with EA (80 mL). The combined organic layers were washed with brine (80 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0˜38% ethylacetate/petroleum ether gradient @ 60 mL/min) to give 7 (7.7 g, 13.43 mmol, 63.8% yield) as a white solid. ESI-LCMS: 506.2 [M-tBu]⁺; ¹H NMR (400 MHz, CDCl₃) δ=8.97 (s, 1H), 7.25 (d, J=8.3 Hz, 1H), 6.95-6.88 (m, 1H), 6.87-6.81 (m, 1H), 5.83-5.77 (m, 2H), 4.58 (dd, J=4.4, 6.7 Hz, 1H), 4.05 (dd, J=5.0, 7.5 Hz, 1H), 3.82-3.77 (m, 1H), 3.53 (s, 3H), 3.20 (s, 3H), 1.50 (s, 9H), 0.91 (s, 9H), 0.11 (d, J=2.5 Hz, 6H).

Preparation of (7): To a solution of 6 (7.7 g, 13.71 mmol) in MeOH (10 mL) was added HCl/MeOH (4 M, 51.40 mL) at 20° C. The mixture was stirred at 20° C. for 16 hr. Upon completion, the reaction mixture was concentrated under reduced pressure to remove MeOH. The residue was purified by flash silica gel chromatography (ISCO®; 80 g SepaFlash® Silica Flash Column, Eluent of 0˜4% MeOH/DCM @ 60 mL/min) to give 7 (4.1 g, 86.11% yield) as a white solid. ESI-LCMS: 369.9 [M+Na]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.44 (s, 1H), 7.66 (d, J=8.3 Hz, 1H), 7.11 (q, J=4.9 Hz, 1H), 6.69 (dd, J=6.0, 15.1 Hz, 1H), 6.56-6.47 (m, 1H), 5.82 (d, J=4.0 Hz, 1H), 5.67 (dd, J=2.0, 8.0 Hz, 1H), 5.56 (br s, 1H), 4.42 (t, J=6.1 Hz, 1H), 4.13 (t, J=5.8 Hz, 1H), 3.97 (t, J=4.8 Hz, 1H), 3.39 (s, 3H), 2.48 (d, J=5.3 Hz, 3H)

Preparation of (8): To a solution of 7 (2.5 g, 7.20 mmol) in THF (25 mL) was added Pd/C (2.5 g, 10% purity) under H₂atmosphere, and the suspension was degassed and purged with H₂for 3 times. The mixture was stirred under H₂(15 Psi) at 20° C. for 1 hr. Upon completion, the reaction mixture was filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 25 g SepaFlash® Silica Flash Column, Eluent of 0˜5% Ethylacetate/Petroleum ethergradient @ 50 mL/min) to give 8 (2.2 g, 87.49% yield) as a white solid. ESI-LCMS: 372.1 [M+Na]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ=11.40 (s, 1H), 7.62 (d, J=8.0 Hz, 1H), 6.93 (q, J=4.9 Hz, 1H), 5.76 (d, J=4.5 Hz, 1H), 5.66 (d, J=8.0 Hz, 1H), 5.26 (d, J=6.3 Hz, 1H), 3.97 (q, J=5.9 Hz, 1H), 3.91-3.79 (m, 2H), 3.36 (s, 3H), 3.14-3.00 (m, 2H), 2.56 (d, J=5.0 Hz, 3H), 2.07-1.87 (m, 2H).

Preparation of (Example 53 monomer): To a solution of 8 (2.2 g, 6.30 mmol, 1 eq) in CH₃CN (25 mL) was added P-1 (2.47 g, 8.19 mmol, 2.60 mL, 1.3 eq) at 0° C., and then 1H-imidazole-4,5-dicarbonitrile (818.07 mg, 6.93 mmol, 1.1 eq) was added in one portion at 0° C. under Ar. The mixture was stirred at 20° C. for 2 hr. Upon completion, the reaction mixture was quenched by saturated aq. NaHCO₃(25 mL), and extracted with DCM (25 mL*2). The combined organic layers were washed with brine (25 mL*2), dried over Na₂SO₄, filtered and concentrated under reduced pressure to give a residue. The residue was purified by flash silica gel chromatography (ISCO®; 40 g SepaFlash® Silica Flash Column, Eluent of 40˜85% ethylacetate/petroleum ether gradient @ 40 mL/min) to give Example 53 monomer (2.15 g, 61.32% yield) as a white solid. ESI-LCMS: 572.2 [M+Na]⁺; ¹H NMR (400 MHz, CD₃CN) δ=9.32 (br s, 1H), 7.39 (d, J=8.1 Hz, 1H), 5.82-5.75 (m, 1H), 5.66 (dd, J=0.7, 8.1 Hz, 1H), 5.14 (qd, J=4.9, 9.4 Hz, 1H), 4.24-4.02 (m, 2H), 3.99-3.93 (m, 1H), 3.90-3.60 (m, 4H), 3.43 (d, J=17.5 Hz, 3H), 3.18-3.08 (m, 2H), 2.74-2.61 (m, 5H), 2.19-2.11 (m, 1H), 2.09-1.98 (m, 1H), 1.19 (ddd, J=2.4, 4.0, 6.6 Hz, 12H). ³¹P NMR (162 MHz, CD₃CN) δ=149.77 (s), 149.63 (br s).

Example 54. Long-Term Efficacy of siNA in an AAV-HBV Mouse Model

AAV/HBV is a recombinant AAV carrying replicable HBV genome. Taking advantage of the highly hepatotropic feature of genotype 8 AAV, the HBV genome can be efficiently delivered to the mouse liver cells. Infection of immune competent mouse with AAV/HBV can result in long term HBV viremia, which mimics chronic HBV infection in patients. The AAV/HBV model can be used to evaluate the in vivo activity of various types of anti-HBV agents. Mice were infected with AAV-HBV on day −28 of the study. AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0147 on day 0. Serial blood collections were usually taken every 5 days on day 0, 5, 10, and 15, etc. until the termination of the study. Serum HBV S antigen (HBsAg) was assayed through ELISA. FIG. 13 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 15) or ds-siNA-0147 (G 19). As shown in FIG. 13, ds-siNA-0147 was effective in reducing serum HBsAg levels and the reduction in serum HBsAg levels was observed for the duration of the study (i.e., 100 days). Thus, FIG. 13 demonstrates that ds-siNA-0147 is effective and durable after a single dose of 5 mg/kg.

ds-siNA

SEQ

ID
Strand
Sequence
ID NO:

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfCm
438

0147

UmUmCmUmCmUmCmAmAmU-p-ps2-

GalNAc4-3′

Antisense
3′-mApsmGpsmCmAmCfCmAfCmCm
501

UmGmAmAmGmAfGmAmGmUpsfUpsm

A-5′

Example 55. Deuterated Vinyl Phosphonate Improves Potency of siNA

As shown in FIG. 14, siNA molecules having 2′-fluoro nucleotides at positions 5 and 7-9 from the 5′ end of the sense strand and 2′-fluoro nucleotides at positions 2, 5, 8, 14, and 17 from the 5′ end of the antisense strand resulted in greater than a 0.5-log reduction in HBsAg, with the greatest reduction in HBsAg found in mice treated with the deuterated vinylphosphonate siNA (ds-siNA-0172). In addition, the duration of the reduction in serum HBsAg levels was significantly longer for the deuterated vinylphosphonate siNA (ds-siNA-0172). Thus, FIG. 14 demonstrates that the presence of a deuterated vinyl phosphonate improves potency and durability of the siNA.

ds-siNA

SEQ ID

ID
Strand
Sequence
NO:

ds-siNA-
Sense
5′-mCpsmCpsmGmUfGmUfGfCfAmCmUmUmCmGmC
424

0109

mUmUmCmAp-ps2-GalNAc4

Antisense
3′-mCpsmUpsmGmGfCmAmCfAmCmGmUmGmAfAmG
485

mCfGmAmApsfGpsmU-5′

ds-siNA-
Sense
5′-mCpsmCpsmGmUfGmUfGfCfAmCmUmUmCmGmC
424

0172

mUmUmCmA-p-ps2-GalNAc4-3′

Antisense
3′-mCpsmUpsmGmGfCmAmCfAmCmGmUmGmAfAmG
536

mCfGmAmApsfGpsd2vd3U-5′

d2vd3U =

embedded image

Example 56. Comparison of siNAs

AAV/HBV is a recombinant AAV carrying replicable HBV genome. Taking advantage of the highly hepatotropic feature of genotype 8 AAV, the HBV genome can be efficiently delivered to the mouse liver cells. Infection of immune competent mouse with AAV/HBV can result in long term HBV viremia, which mimics chronic HBV infection in patients. The AAV/HBV model can be used to evaluate the in vivo activity of various types of anti-HBV agents. Mice were infected with AAV-HBV on day −28 of the study. AAV-HBV mice were subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0109, ds-siNA-0119, or ds-siNA-0153 on day 0. Serial blood collections were usually taken every 5 days on day 0, 5, 10, and 15, etc. until the termination of the study. Serum HBV S antigen (HBsAg) was assayed through ELISA. FIG. 15 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 01, circle), ds-siNA-0109 (G 07, square), ds-siNA-0119 (G11, triangle), or ds-siNA-0153 (G13, diamond). As shown in FIG. 14, all three ds-siNAs were effective in reducing serum HBsAg levels and the reduction in serum HBsAg levels was observed for the duration of the study (i.e., 100 days), with the best potency and durability observed for ds-siNA-0153. Thus, FIG. 15 demonstrates that ds-siNA-0109, ds-siNA-0119, and ds-siNA-0153 were effective and durable after a single dose of 5 mg/kg.

ds-siNA

SEQ

ID
Strand
Sequence
ID NO:

ds-siNA-
Sense
5′-mCpsmCpsmGmUfGmUfGfCfAm
424

0109

CmUmUmCmGmCmUmUmCmAp-ps2-

GalNAc4

Antisense
3′-mCpsmUpsmGmGfCmAmCfAmCm
485

GmUmGmAfAmGmCfGmAmApsfGpsm

U-5′

ds-siNA-
Sense
5′-mGpsmCpsmUmGfCmUmAmUfGf
430

0119

CfCmUmCfAmUmCmUmUfCmUmU-

p-ps2-GalNAc4

Antisense
3′-mGpsmApsmCmGmAmCmGmAmUf
595

AmCmGmGmAmGmUmAmGmAmAmGpsf

ApsmA-5′

ds-siNA-
Sense
5′-mUpsmGpsfUmGmCmAfCfUfUm
441

0153

CmGfCmUmUmCmAfCmCmU-p-ps2-

GalNAc4-3′

Antisense
3′-mGpsmCpsmAfCmAmCmGfUmGm
526

AmAfGmCmGmAfAmGmUmGpsfGpsm

A-5

Example 57. Efficacy of a Combination Therapy in AAV-HBV Mouse Model

AAV-HBV mice were subcutaneously injected with (a) 5 mL/kg of vehicle, three times a week, on days 0, 7, and 14 (G 01); (b) 5 mg/kg of ASO 1 on a weekly basis, on days 0, 7, and 14 (G 20); (c) a single dose of 5 mg/kg of ds-siNA-0147 on day 0 (G 24); or (d) a combination of ASO 1 and ds-siNA-0147, wherein ASO 1 was administered at a dose of 5 mg/kg on a weekly basis, on days 0, 7, and 14; and ds-siNA-0160 was administered as a single dose of 5 mg/kg at day 0 (G25). Serial blood collections were usually taken every 5 days on day 0, 5, 10, and 15, etc. until the termination of the study. Serum HBV S antigen (HBsAg) was assayed through ELISA. FIG. 16 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 01, circle), ASO 1 (G 20, square), ds-siNA-0147 (G 24, diamond), or a combination of ds-siNA-0147 and ASO 1 (G 25, triangle). As shown in FIG. 16, treatment with ASO 1, ds-siNA-0147, or a combination of ASO 1 and ds-siNA-0147 resulted in a reduction in serum, with the greatest reduction observed in mice treated with the combination of ASO 1 and ds-siNA-0147.

ds-siNA

SEQ

ID
Strand
Sequence
ID NO:

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAf
438

0147

CmUmUmCmUmCmUmCmAmAmU-p-

ps2-GalNAc4-3′
501

Antisense
3′-mApsmGpsmCmAmCfCmAfCm

CmUmGmAmAmGmAfGmAmGmUpsf

UpsmA-5′

Example 58. Efficacy of a Combination Therapy in AAV-HBV Mouse Model

AAV-HBV mice were subcutaneously injected with (a) 5 mL/kg of vehicle, three times a week, on days 0, 7, and 14 (G 01); (b) 5 mg/kg of ASO 1 on a weekly basis, on days 0, 7, and 14 (G 20); (c) a single dose of 5 mg/kg of ds-siNA-0109 on day 0 (G 26); or (d) a combination of ASO 1 and ds-siNA-0109, wherein ASO 1 was administered at a dose of 5 mg/kg on a weekly basis, on days 0, 7, and 14; and ds-siNA-0160 was administered as a single dose of 5 mg/kg at day 0 (G27). Serial blood collections were usually taken every 5 days on day 0, 5, 10, and 15, etc. until the termination of the study. Serum HBV S antigen (HBsAg) was assayed through ELISA. FIG. 17 shows a graph of the change in serum HBsAg from AAV-HBV mice treated with vehicle (G 01, circle), ASO 1 (G 20, square), ds-siNA-0109 (G 26, diamond), or a combination of ds-siNA-0109 and ASO 1 (G 27, triangle). As shown in FIG. 17, treatment with ASO 1, ds-siNA-0109, or a combination of ASO 1 and ds-siNA-0109 resulted in a reduction in serum, with the greatest reduction observed in mice treated with the combination of ASO 1 and ds-siNA-0109.

ds-siNA

SEQ

ID
Strand
Sequence
ID NO:

ds-siNA-
Sense
5′-mCpsmCpsmGmUfGmUfGfCf
424

0109

AmCmUmUmCmGmCmUmUmCmAp-

ps2-GalNAc4

Antisense
3′-mCpsmUpsmGmGfCmAmCfAm
485

CmGmUmGmAfAmGmCfGmAmApsf

GpsmU-5′

Example 59. Role of 2′-Fluoro Mimics on siNA Activity

This example investigates the role of 2′-fluoro mimics, f4P and f2P monomers, on siNA activity. The f4P monomer was produced as described in Example 42. The f2P monomer was produced as described in Example 45.

The activity of ds-siNA-0173, ds-siNA-0174, and ds-siNA-0175 was assayed using an in vitro HBsAg secretion assay with HepG2.2.15 cells. Generally, HepG2.2.15 cells were maintained in DMEM medium with 10% fetal bovine serum (FBS) and 1% penicillin/streptomycin, 1% Glutamine, 1% non-essential amino acids, 1% Sodium Pyruvate and 250 ug/ml G418. Cells were maintained at 37° C. in a 5% CO²atmosphere. For HBsAg release assay, an assay medium was made that DMEM with 5% FBS, 1% penicillin/streptomycin, 1% Glutamine and 1% DMSO. The day before the assay, HepG2.2.15 cells were trypsinized and washed with Assay Medium once, then spun at 250 g×5 min, resuspended with Assay Medium. The resuspended cells were seeded at 50,000/well in assay medium in collagen coated 96 well plates. On the next day, siRNA was diluted with Opti-MEM, 9-pt, 3-fold dilution and dilute Lipofectamine RNAiMAX (Invitrogen) according manufacturer's manual. siRNA dilution and RNAiMAX dilution were mixed and incubated at room temperature for 5 minutes. 15 μl of the siRNA/RNAiMax mixture was added each well of the collagen coated 96 well plate. The plates were placed in a 37° C., 5% CO²incubator for 4 days. After incubation, the supernatant was harvested and measured for HBsAg with ELISA kit (Diasino). The cell viability was measured with CellTiter-Glo (Promega). The EC50, the concentration of the drug required for reducing HBsAg secretion by 50% in relation to the untreated cell control, was calculated using the Prism Graphpad. The CC50, the concentration of the drug required for reducing cell viability by 50% in relation to the untreated cell control, was calculated with the same software. The EC50 and CC50 values are shown in Table 11.

TABLE 11

siNA Activity

ds-siNA

SEQ ID
EC50
CC50

ID
Strand
Sequence
NO:
(nM)*
(nM)

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfC
438
C
>1

0173

mUmUmCmUmCmUmCmAmAmU

Antisense
3′-mApsmGpsmCmAmCfCmA
537

fCmCmUmGmAmAmGmAfGmAmG

mUpsf4PpsmA-5′

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfC
438
A
>1

0174

mUmUmCmUmCmUmCmAmAmU

Antisense
3′-mApsmGpsmCmAmCfCmAf2P
538

mCmUmGmAmAmGmAfGmAmGm

UpsfUpsmA-5′

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfC
438
B
>1

0175

mUmUmCmUmCmUmCmAmAmU

(control)
Antisense
5′-mApsfUpsmUmGmAfGmAmG
501

mAmAmGmUmCfCmAfCmCmAmC

psmGpsmA-3′

*A = EC50 < 0.2 nM; B = 0.2 nM < EC50 < 0.1 nm; C = EC50 > 0.1 nm

f4P =

embedded image

f2P =

Example 60. Role of 2′-Fluoro Mimics on siNA Activity

This example investigates the role of 2′-fluoro mimics, f4P, f2P, and fx monomers, on siNA activity of GalNAc4 conjugated siNAs. The f4P monomer was produced as described in Example 42. The f2P monomer was produced as described in Example 45. The fx monomer was produced as described in Example 41.

ds-siNA

SEQ ID

ID
Strand
Sequence
NO:

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfCmUmUmCmUmCmU
438

0176

mCmAmAmU-p-(PS)2-GalNAc4

Antisense
3′-mApsmGpsmCmAmCfCmAfCmCmUmGmAmAmGmA
537

fGmAmGmUpsf4PpsmA-5′

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfCmUmUmCmUmCmU
438

0177

mCmAmAmU-p-(PS)2-GalNAc4

Antisense
3′-mApsmGpsmCmAmCfCmAf2PmCmUmGmAmAmGm
538

AfGmAmGmUpsfUpsmA-5′

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfCmUmUmCmUmCmU
438

0178

mCmAmAmU-p-(PS)2-GalNAc4

Antisense
3′-mApsmGpsmCmAmCfCmAfXmCmUmGmAmAmG
539

mAfGmAmGmUpsfUpsmA-5′

ds-siNA-
Sense
5′-mGpsmUpsmGmGfUmGfGfAfCmUmUmCmUmCmU
438

0147

mCmAmAmU-p-ps2-GalNAc4

Antisense
3′-mApsmGpsmCmAmCfCmAfCmCmUmGmAmAmG
501

mAfGmAmGmUpsfUpsmA-5′

f4P =

embedded image

f2P =

fX =

The activity of ds-siNA-017, ds-siNA-017, ds-siNA-017, and ds-siNA-0147 can be assayed using in vitro or in vivo methods. An exemplary in vitro assay can be performed as follows:

Homo sapiens HepG2.2.15 cells are cultured in Dulbecco's Modified Eagle's Medium (DMEM) (ATCC 30-2002) supplemented to also contain 10% fetal calf serum (FCS). Cells were incubated at 37° C. in an atmosphere with 5% CO2 in a humidified incubator. For transfection of HepG2.2.15 cells with HBV targeting siRNAs, cells are seeded at a density of 15000 cells/well in 96-well regular tissue culture plates. Transfection of cells is carried out using RNAiMAX (Invitrogen/Life Technologies) according to the manufacturer's instructions. Dose-response experiments are done with oligo concentrations of 40, 20, 10, 5, 2.5, 1.25, 0.625, 0.3125, 0.15625 and 0.07813 nM. For each HBV targeting siRNA treatment (e.g., ds-siNA-0176, ds-siNA-0177, ds-siNA-0178, or ds-siNA-0147), four wells are transfected in parallel, and individual data points were collected from each well. After 24 h of incubation with siRNA, media is removed, and cells are lysed and analyzed with a QuantiGene2.0 branched DNA (bDNA) probe set specific for HBV genotype D (also called Hepatitis B virus subtype ayw, complete genome of 3182 base-pairs) as present in cell line HepG2.2.15.

For each well, the HBV on-target mRNA levels is normalized to the GAPDH mRNA level. The activity of the HBV targeting ds-siNAs can be expressed as EC50, 50% reduction of normalized HBV RNA level from no drug control. The cytotoxicity of the HBV targeting ds-siRNAs can be expressed by CC50 of 50% reduction of GAPDH mRNA from no drug control.

The AAV/HBV model can be used to evaluate the in vivo activity of the siRNA treatment (e.g., ds-siNA-0173, ds-siNA-0174, ds-siNA-0175, and ds-siNA-0147). Mice are infected with AAV-HBV on day −28 of the study. AAV-HBV mice are subcutaneously injected with a single dose of 5 mL/kg of vehicle or 5 mg/kg of ds-siNA-0173, ds-siNA-0174, ds-siNA-0175, or ds-siNA-0147 on day 0. Serial blood collections can be taken every 5 days on day 0, 5, 10, and 15, etc. until the termination of the study. Serum HBV S antigen (HBsAg) can be assayed through ELISA.

EXEMPLARY EMBODIMENTS

Exemplary Embodiments are Provided Below:

1. A short interfering nucleic acid (siNA) molecule comprising:

- (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length; and
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 3, 5, 7, 8, 9, 10, 11, 12, 14, 17, and/or 19 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide; and
- (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length; and
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide.
    
    2. A short interfering nucleic acid (siNA) molecule comprising:
- (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length; and
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and
- (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length; and
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and the nucleotide at position 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
    
    3. The siNA of embodiment 1 or 2, wherein the first nucleotide sequence comprises 16, 17, 18, 19, 20, 21, 22, 23, or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide.
    
    4. The siNA of embodiment 1 or 2, wherein 70%, 75%, 80%, 85%, 90%, 95% or 100% of the nucleotides in the first nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide.
    
    5. The siNA of any one of embodiments 1-4, wherein at least 2, 3, 4, 5, or 6 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides.
    
    6. The siNA of any one of embodiments 1-5, wherein no more than 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the first nucleotide sequence are 2′-fluoro nucleotides.
    
    7. The siNA of any one of embodiments 1-6, wherein at least 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides.
    
    8. The siNA of any one of embodiments 1-7, wherein no more than 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the first nucleotide sequence are 2′-O-methyl nucleotides.
    
    9. The siRNA of any one of embodiments 1-8, wherein the second nucleotide sequence comprises 16, 17, 18, 19, 20, 21, 22, 23, or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide.
    
    10. The siNA of any one of embodiments 1-9, wherein 70%, 75%, 80%, 85%, 90%, 95% or 100% of the nucleotides in the second nucleotide sequence are modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide.
    
    11. The siNA of any one of embodiments 1-10, wherein at least 2, 3, 4, 5, or 6 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides.
    
    12. The siNA of any one of embodiments 1-11, wherein less than or equal to 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the second nucleotide sequence are 2′-fluoro nucleotides.
    
    13. The siNA of any one of embodiments 1-12, wherein at least 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides.
    
    14. The siNA of any one of embodiments 1-12, wherein less than or equal to 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, or 2 modified nucleotides of the second nucleotide sequence are 2′-O-methyl nucleotides.
    
    15. A short interfering nucleic acid (siNA) molecule comprising:
- (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length;
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and
  - (iii) comprises 1 or more phosphorothioate internucleoside linkage; and
- (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length;
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and
  - (iii) comprises 1 or more phosphorothioate internucleoside linkage.
    
    16. A short interfering nucleic acid (siNA) molecule comprising:
- (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length; and
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide; and
- (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence:
  - (i) is 15 to 30 nucleotides in length; and
  - (ii) comprises 15 or more modified nucleotides independently selected from a 2′-O-methyl nucleotide and a 2′-fluoro nucleotide, wherein at least one modified nucleotide is a 2′-O-methyl nucleotide and at least one modified nucleotide is a 2′-fluoro nucleotide,
- wherein the siNA further comprises a phosphorylation blocker, a galactosamine, or 5′-stabilized end cap.
  
  17. The siNA according to any preceding embodiment, wherein at least 1, 2, 3, 4, 5, 6, or 7 nucleotides at position 3, 5, 7, 8, 9, 10, 11, 12, and/or 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  18. The siNA according to any preceding embodiment, wherein the nucleotide at position 3 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  19. The siNA according to any preceding embodiment, wherein the nucleotide at position 5 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  20. The siNA according to any preceding embodiment, wherein the nucleotide at position 7 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  21. The siNA according to any preceding embodiment, wherein the nucleotide at position 8 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  22. The siNA according to any preceding embodiment, wherein the nucleotide at position 9 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  23. The siNA according to any preceding embodiment, wherein the nucleotide at position 12 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  24. The siNA according to any preceding embodiment, wherein the nucleotide at position 17 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  25. The siNA according to any preceding embodiment, wherein the nucleotide at position 10 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  26. The siNA according to any preceding embodiment, wherein the nucleotide at position 11 from the 5′ end of the first nucleotide sequence is a 2′-fluoro nucleotide.
  
  27. The siNA according to any preceding embodiment, wherein at least 1, 2, 3, 4, 5, 6, 7, 8, or 9 nucleotides at position 2, 5, 6, 8, 10, 14, 16, 17, and/or 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  28. The siNA according to any preceding embodiment, wherein the nucleotide at position 2 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  29. The siNA according to any preceding embodiment, wherein the nucleotide at position 5 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  30. The siNA according to any preceding embodiment, wherein the nucleotide at position 6 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  31. The siNA according to any preceding embodiment, wherein the nucleotide at position 8 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  32. The siNA according to any preceding embodiment, wherein the nucleotide at position 10 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  33. The siNA according to any preceding embodiment, wherein the nucleotide at position 14 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  34. The siNA according to any preceding embodiment, wherein the nucleotides at position 16 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  35. The siNA according to any preceding embodiment, wherein the nucleotide at position 17 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  36. The siNA according to any preceding embodiment, wherein the nucleotide at position 18 from the 5′ end of the second nucleotide sequence is a 2′-fluoro nucleotide.
  
  37. The siNA according to any preceding embodiment, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides.
  
  38. The siNA of embodiment 37, wherein the alternating 1:3 modification pattern occurs 2-5 times.
  
  39. The siNA according to embodiment 37 or 38, wherein at least two of the alternating 1:3 modification pattern occur consecutively.
  
  40. The siNA according to any of embodiments 37-39, wherein at least two of the alternating 1:3 modification pattern occurs nonconsecutively.
  
  41. The siNA according to any of claims 37-40, wherein at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand.
  
  42. The siNA according to any of claims 37-41, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand.
  
  43. The siNA according to any of claims 37-42, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand.
  
  44. The siNA according to any of claims 37-43, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand.
  
  45. The siNA according to any of claims 37-44, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand.
  
  46. The siNA according to any of claims 37-45, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand.
  
  47. The siNA according to any one of embodiments 1-37, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:2 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides.
  
  48. The siNA of embodiment 47, wherein the alternating 1:2 modification pattern occurs 2-5 times.
  
  49. The siNA according to embodiment 47 or 48, wherein at least two of the alternating 1:2 modification pattern occurs consecutively.
  
  50. The siNA according to any of embodiments 47-49, wherein at least two of the alternating 1:2 modification pattern occurs nonconsecutively.
  
  51. The siNA according to any of claims 47-50, wherein at least 1, 2, 3, 4, or 5 alternating 1:2 modification pattern begins at nucleotide position 2, 5, 8, 14, and/or 17 from the 5′ end of the antisense strand.
  
  52. The siNA according to any of claims 47-51, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand.
  
  53. The siNA according to any of claims 47-52, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 5 from the 5′ end of the antisense strand.
  
  54. The siNA according to any of claims 47-53, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 8 from the 5′ end of the antisense strand.
  
  55. The siNA according to any of claims 47-54, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand.
  
  56. The siNA according to any of claims 47-55, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 17 from the 5′ end of the antisense strand.
  
  57. A short interfering nucleic acid (siNA) molecule represented by Formula (VIII):
  
  5′-A_n¹B_n²A_n³B_n⁴A_n⁵B_n⁶A_n⁷B_n⁸A_n⁹-3′
  3′-C_q¹A_q²B_q³A_q⁴B_q⁵A_q⁶B_q⁷A_q⁸B_q⁹A_q¹⁰B_q¹¹A_q¹²-5′
  
  wherein:
- the top strand is a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises 15 to 30 nucleotides;
- the bottom strand is an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises 15 to 30 nucleotides;
- each A is independently a 2′-O-methyl nucleotide or a nucleotide comprising a 5′-stabilized end cap or a phosphorylation blocker;
- B is a 2′-fluoro nucleotide;
- C represents overhanging nucleotides and is a 2′-O-methyl nucleotide;
- n¹=1-4 nucleotides in length;
- each n², n⁶, n⁸, q³, q⁵, q⁷, q⁹, q¹¹, and q¹²is independently 0-1 nucleotides in length;
- each n³and n⁴is independently 1-3 nucleotides in length;
- n⁵is 1-10 nucleotides in length;
- n⁷is 0-4 nucleotides in length;
- each n⁹, q¹, and q²is independently 0-2 nucleotides in length;
- q⁴is 0-3 nucleotides in length;
- q⁶is 0-5 nucleotides in length;
- q⁸is 2-7 nucleotides in length; and
- q¹⁰is 2-11 nucleotides in length.
  
  58. A short interfering nucleic acid (siNA) molecule represented by Formula (IX):
  
  5′-A_2-4B₁A_1-3B_2-3A_2-10B_0-1A_0-4B_0-1A_0-2-3′
  3′-C₂A_0-2B_0-1A_0-3B_0-1A_0-5B_0-1A_2-7B₁A_2-11B₁A₁-5′
  
  wherein:
- the top strand is a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises 15 to 30 nucleotides;
- the bottom strand is an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises 15 to 30 nucleotides;
- each A is independently a 2′-O-methyl nucleotide or a nucleotide comprising a 5′-stabilized end cap or a phosphorylation blocker;
- B is a 2′-fluoro nucleotide;
- C represents overhanging nucleotides and is a 2′-O-methyl nucleotide.
  
  59. A short interfering nucleic acid (siNA) molecule comprising
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7-9, 12, and 17 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, 10, 11, and 13-16 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 2 and 14 from the 5′ end of the second nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 3-13, and 15-17 from the 5′ end of the second nucleotide sequence.
  
  60. The siNA molecule of embodiment 59, wherein the first nucleotide sequence consists of 19 nucleotides.
  
  61. The siNA molecule of embodiment 60, wherein 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence.
  
  62. The siNA molecule according to any one of embodiments 59-61, wherein the second nucleotide sequence consists of 21 nucleotides.
  
  63. The siNA molecule of embodiment 62, wherein 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the second nucleotide sequence.
  
  64. A short interfering nucleic acid (siNA) molecule comprising
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7, 8, and 17 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, and 9-16 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 2 and 14 from the 5′ end of the first nucleotide sequence; and wherein 2′-O-methyl nucleotides are at positions 1, 3-13, and 15-17 from the 5′ end of the first nucleotide sequence.
  
  65. The siNA molecule of embodiment 64, wherein the first nucleotide sequence consists of 19 nucleotides.
  
  66. The siNA molecule of embodiment 65, wherein 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence.
  
  67. The siNA molecule according to any one of embodiments 64-66, wherein the second nucleotide sequence consists of 21 nucleotides.
  
  68. The siNA molecule of embodiment 67, wherein 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the second nucleotide sequence.
  
  69. A short interfering nucleic acid (siNA) molecule comprising
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 3, 7-9, 12 and 17 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 2, 4-6, 10, 11, and 13-16 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides.
  
  70. The siNA molecule of embodiment 69, wherein the first nucleotide sequence consists of 19 nucleotides.
  
  71. The siNA molecule of embodiment 70, wherein 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence.
  
  72. The siNA molecule according to any one of embodiments 69-71, wherein the second nucleotide sequence consists of 21 nucleotides.
  
  73. The siNA molecule of embodiment 72, wherein 2′-O-methyl nucleotides are at positions 19-21 from the 5′ end of the second nucleotide sequence.
  
  74. The siRNA molecule according to any one of embodiments 69-73, wherein the alternating 1:3 modification pattern occurs 2-5 times.
  
  75. The siRNA molecule according to any one of embodiments 69-74, wherein at least two of the alternating 1:3 modification pattern occur consecutively.
  
  76. The siRNA molecule according to any one of embodiments 69-75, wherein at least two of the alternating 1:3 modification pattern occurs nonconsecutively.
  
  77. The siNA according to any one of embodiments 69-76, wherein at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand.
  
  78. The siNA according to any one of embodiments 69-77, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand.
  
  79. The siNA according to any one of embodiments 69-78, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand.
  
  80. The siNA according to any one of embodiments 69-79, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand.
  
  81. The siNA according to any one of embodiments 69-80, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand.
  
  82. The siNA according to any one of embodiments 69-81, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand.
  
  83. A short interfering nucleic acid (siNA) molecule comprising
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-17 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:3 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 3 nucleotides are 2′-O-methyl nucleotides.
  
  84. The siNA molecule of embodiment 83, wherein the first nucleotide sequence consists of 19 nucleotides.
  
  85. The siNA molecule of embodiment 84, wherein 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence.
  
  86. The siNA molecule according to any one of embodiments 83-85, wherein the second nucleotide sequence consists of 21 nucleotides.
  
  87. The siNA molecule of embodiment 86, wherein 2′-O-methyl nucleotides are at positions 19-21 from the 5′ end of the second nucleotide sequence.
  
  88. The siRNA molecule according to any one of embodiments 83-87, wherein the alternating 1:3 modification pattern occurs 2-5 times.
  
  89. The siRNA molecule according to any one of embodiments 83-88, wherein at least two of the alternating 1:3 modification pattern occur consecutively.
  
  90. The siRNA molecule according to any one of embodiments 83-89, wherein at least two of the alternating 1:3 modification pattern occurs nonconsecutively.
  
  91. The siNA according to any one of embodiments 83-90, wherein at least 1, 2, 3, 4, or 5 alternating 1:3 modification pattern begins at nucleotide position 2, 6, 10, 14, and/or 18 from the 5′ end of the antisense strand.
  
  92. The siNA according to any one of embodiments 83-91, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand.
  
  93. The siNA according to any one of embodiments 83-92, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 6 from the 5′ end of the antisense strand.
  
  94. The siNA according to any one of embodiments 83-93, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 10 from the 5′ end of the antisense strand.
  
  95. The siNA according to any one of embodiments 83-94, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand.
  
  96. The siNA according to any one of embodiments 83-95, wherein at least one alternating 1:3 modification pattern begins at nucleotide position 18 from the 5′ end of the antisense strand.
  
  97. A short interfering nucleic acid (siNA) molecule comprising
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-17 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein the nucleotides in the second nucleotide sequence are arranged in an alternating 1:2 modification pattern, and wherein 1 nucleotide is a 2′-fluoro nucleotide and 2 nucleotides are 2′-O-methyl nucleotides.
  
  98. The siNA molecule of embodiment 97, wherein the first nucleotide sequence consists of 19 nucleotides.
  
  99. The siNA molecule of embodiment 98, wherein 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence.
  
  100. The siNA molecule according to any one of embodiments 97-99, wherein the second nucleotide sequence consists of 21 nucleotides.
  
  101. The siNA molecule of embodiment 100, wherein 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the second nucleotide sequence.
  
  102. The siRNA molecule according to any one of embodiments 97-101, wherein the alternating 1:2 modification pattern occurs 2-5 times.
  
  103. The siRNA molecule according to any one of embodiments 97-102, wherein at least two of the alternating 1:2 modification pattern occur consecutively.
  
  104. The siRNA molecule according to any one of embodiments 97-103, wherein at least two of the alternating 1:2 modification pattern occurs nonconsecutively.
  
  105. The siNA according to any one of embodiments 97-104, wherein at least 1, 2, 3, 4, or 5 alternating 1:2 modification pattern begins at nucleotide position 2, 5, 8, 14, and/or 17 from the 5′ end of the antisense strand.
  
  106. The siNA according to any one of embodiments 97-105, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 2 from the 5′ end of the antisense strand.
  
  107. The siNA according to any one of embodiments 97-106, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 5 from the 5′ end of the antisense strand.
  
  108. The siNA according to any one of embodiments 97-107, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 8 from the 5′ end of the antisense strand.
  
  109. The siNA according to any one of embodiments 74-85, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 14 from the 5′ end of the antisense strand.
  
  110. The siNA according to any one of embodiments 97-109, wherein at least one alternating 1:2 modification pattern begins at nucleotide position 17 from the 5′ end of the antisense strand.
  
  111. A short interfering nucleic acid (siNA) molecule comprising
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5 and 7-9 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6, and 10-17 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 2, 6, 14, and 16 from the 5′ end of the second nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 3-5, 7-13, 15, and 17 from the 5′ end the second nucleotide sequence.
  
  112. The siNA molecule of embodiment 111, wherein the first nucleotide sequence consists of 19 nucleotides.
  
  113. The siNA molecule of embodiment 112, wherein 2′-O-methyl nucleotides are at positions 18 and 19 from the 5′ end of the first nucleotide sequence.
  
  114. The siNA molecule according to any one of embodiments 111-113, wherein the second nucleotide sequence consists of 21 nucleotides.
  
  115. The siNA molecule of embodiment 114, wherein 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the second nucleotide sequence.
  
  116. A short interfering nucleic acid (siNA) molecule comprising:
- (a) a sense strand comprising a first nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 5, 9-11, and 14 from the 5′ end of the first nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1-4, 6-8, and 12-17 from the 5′ end of the first nucleotide sequence; and
- (b) an antisense strand comprising a second nucleotide sequence consisting of 17 to 23 nucleotides, wherein 2′-fluoro nucleotides are at positions 2 and 14 from the 5′ end of the second nucleotide sequence, and wherein 2′-O-methyl nucleotides are at positions 1, 3-13, and 15-17 from the 5′ end the second nucleotide sequence.
  
  117. The siNA molecule of embodiment 116, wherein the first nucleotide sequence consists of 21 nucleotides.
  
  118. The siNA molecule of embodiment 117, wherein 2′-O-methyl nucleotides are at positions 18-21 from the 5′ end of the first nucleotide sequence.
  
  119. The siNA molecule according to any one of embodiments 116-118, wherein the second nucleotide sequence consists of 23 nucleotides.
  
  120. The siNA molecule of embodiment 119, wherein 2′-O-methyl nucleotides are at positions 18-23 from the 5′ end of the second nucleotide sequence.
  
  121. The siNA according to any preceding embodiment, wherein the sense strand further comprises TT sequence adjacent to the first nucleotide sequence.
  
  122. The siNA according to any preceding embodiment, wherein the sense strand further comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or more phosphorothioate internucleoside linkages.
  
  123. The siNA of embodiment 122, wherein at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 5′ end of the first nucleotide sequence.
  
  124. The siNA of embodiment 122 or 123, wherein at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 5′ end of the first nucleotide sequence.
  
  125. The siNA according to any preceding embodiment, wherein the antisense strand further comprises TT sequence adjacent to the second nucleotide sequence.
  
  126. The siNA according to any preceding embodiment, wherein the antisense strand further comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or more phosphorothioate internucleoside linkages.
  
  127. The siNA of embodiment 126, wherein at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 5′ end of the second nucleotide sequence.
  
  128. The siNA of embodiment 126 or 127, wherein at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 5′ end of the second nucleotide sequence.
  
  129. The siNA of any one of embodiments 126-128, wherein at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 1 and 2 from the 3′ end of the second nucleotide sequence.
  
  130. The siNA of any one of embodiments 126-129, wherein at least one phosphorothioate internucleoside linkage is between the nucleotides at positions 2 and 3 from the 3′ end of the second nucleotide sequence.
  
  131. The siNA according to any preceding embodiment, wherein the first nucleotide from the 5′ end of the first nucleotide sequence comprises a 5′ stabilizing end cap.
  
  132. The siNA according to any preceding embodiment, wherein the first nucleotide from the 5′ end of the second nucleotide sequence comprises a 5′ stabilizing end cap.
  
  133. The siNA according to any preceding embodiment, wherein the first nucleotide from the 5′ end of the first nucleotide sequence comprises a phosphorylation blocker.
  
  134. The siNA according to any preceding embodiment, wherein the first nucleotide from the 5′ end of the second nucleotide sequence comprises a phosphorylation blocker.
  
  135. The siNA according to any preceding embodiment, wherein the first nucleotide sequence or second nucleotide sequence comprises at least one modified nucleotide selected from

embedded image

where R is H or alkyl (or AmNA(N-Me)) when R is alkyl);

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wherein B is a nucleobase.

136. A short-interfering nucleic acid (siNA) molecule comprising:

- (a) a phosphorylation blocker of Formula (IV):

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- wherein
- R¹is a nucleobase,
- R⁴is —O—R³⁰or —NR³¹R³²,
- R³⁰is C₁-C₈substituted or unsubstituted alkyl; and
- R³¹and R³²together with the nitrogen to which they are attached form a substituted
- or unsubstituted heterocyclic ring; and
- (b) a short interfering nucleic acid (siNA).
  
  137. A short-interfering nucleic acid (siNA) molecule comprising:
- (a) a 5′-stabilized end cap of Formula (Ia):

embedded image

- wherein
- R¹is a nucleobase, aryl, heteroaryl, or H,
- R²is

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—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is hydrogen; or

- R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z;
- n is 1, 2, 3, or 4;
- Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴,
- R²¹and R²²are independently hydrogen or C₁-C₆alkyl; R²¹and R²²together form an oxo group;
- R²³is hydrogen or C₁-C₆alkyl;
- R²⁴is —SO₂R²⁵or —C(O)R²⁵; or
- R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring;
- R²⁵is C₁-C₆alkyl; and
- m is 1, 2, 3, or 4; and
- (b) a short interfering nucleic acid (siNA).
  
  138. A short-interfering nucleic acid (siNA) molecule comprising:
- (a) a 5′-stabilized end cap of Formula (Ib):

embedded image

- wherein
- R¹is a nucleobase, aryl, heteroaryl, or H,
- R²is

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—CH═CD-Z, —CD═CH—Z, —CD=CD-Z, —(CR²¹R²²)_n—Z, or —(C₂-C₆alkenylene)-Z and R²⁰is hydrogen; or

- R²and R²⁰together form a 3- to 7-membered carbocyclic ring substituted with —(CR²¹R²²)_n—Z or —(C₂-C₆alkenylene)-Z;
- n is 1, 2, 3, or 4;
- Z is —ONR²³R²⁴, —OP(O)OH(CH₂)_mCO₂R²³, —OP(S)OH(CH₂)_mCO₂R²³, —P(O)(OH)₂, —P(O)(OH)(OCH₃), —P(O)(OH)(OCD₃), —SO₂(CH₂)_mP(O)(OH)₂, —SO₂NR²³R²⁵, —NR²³R²⁴,
- R²¹and R²²are independently hydrogen or C₁-C₆alkyl; R²¹and R²²together form an oxo group;
- R²³is hydrogen or C₁-C₆alkyl;
- R²⁴is —SO₂R²⁵or —C(O)R²⁵; or
- R²³and R²⁴together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring;
- R²⁵is C₁-C₆alkyl; and
- m is 1, 2, 3, or 4; and
- (b) a short interfering nucleic acid (siNA).
  
  139. A short-interfering nucleic acid (siNA) molecule comprising:
- (a) a 5′-stabilized end cap selected from the group consisting of Formula (1) to Formula (15), Formula (9X) to Formula (12X), and Formula (9Y) to Formula (12Y):

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wherein R¹is a nucleobase, aryl, heteroaryl, or H; and

- (b) a short interfering nucleic acid (siNA).
  
  140. A short-interfering nucleic acid (siNA) molecule comprising:
- (a) a 5′-stabilized end cap selected from the group consisting of Formulas (1A)-(15A), Formulas (9B)-(12B), Formulas (9AX)-(12AX), Formulas (9AY)-(12AY), Formulas (9BX)-(12BX), and Formulas (9BY)-(12BY):

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and

- (b) a short interfering nucleic acid (siNA).
  
  141. The siNA molecule according to any one of embodiments 136-140, wherein the siNA comprises the sense strand of any one of embodiments 1-135.
  
  142. The siNA molecule according to any one of embodiments 136-141, wherein the siNA comprises the antisense strand of any one of embodiments 1-135.
  
  143. A short interfering nucleic acid (siNA) molecule comprising:
- (a) a sense strand comprising a first nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to an RNA corresponding to a target gene, wherein the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260; and
- (b) an antisense strand comprising a second nucleotide sequence that is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to the RNA corresponding to the target gene, wherein the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306.
  
  144. A interfering nucleic acid (siNA) molecule comprising:
- (a) a sense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444; and
- (b) an antisense strand comprising a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539.
  
  145. The siNA according to any one of embodiments 1-132, 135, and 137-144, wherein the siNA further comprises a phosphorylation blocker.
  
  146. The siNA according to any one of embodiments 16, 133, 134, and 145, wherein the phosphorylation blocker has the structure of Formula (IV):

embedded image

wherein

- R¹is a nucleobase,
- R⁴is —O—R³⁰or —NR³¹R³², R³⁰is C₁-C₈substituted or unsubstituted alkyl; and
- R³¹and R³²together with the nitrogen to which they are attached form a substituted or unsubstituted heterocyclic ring.
  
  147. The siNA of embodiment 136 or 146, wherein R⁴is —OCH₃or —N(CH₂CH₂)₂O.
  
  148. The siNA according to any one of embodiments 16, 133, 134, 136, and 145-147, wherein the phosphorylation blocker is attached to the 5′ end of the sense strand.
  
  149. The siNA of embodiment 148, wherein the phosphorylation blocker is attached to the 5′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.
  
  150. The siNA according to any one of embodiments 16, 133, 134, 136, and 145-147, wherein the phosphorylation blocker is attached to the 3′ end of the sense strand.
  
  151. The siNA of embodiment 150, wherein the phosphorylation blocker is attached to the 3′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.
  
  152. The siNA according to any one of embodiments 16, 133, 134, 136, and 145-147, wherein the phosphorylation blocker is attached to the 5′ end of the antisense strand.
  
  153. The siNA of embodiment 152, wherein the phosphorylation blocker is attached to the 5′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.
  
  154. The siNA according to any one of embodiments 16, 133, 134, 136, and 144-147, wherein the phosphorylation blocker is attached to the 3′ end of the antisense strand.
  
  155. The siNA of embodiment 154, wherein the phosphorylation blocker is attached to the 3′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, and phosphorodithioate linker.
  
  156. The siNA according to any preceding embodiment, wherein the siNA further comprises a galactosamine.
  
  157. The siNA of embodiment 16 or 156, wherein the galactosamine is N-acetylgalactosamine (GalNAc) of Formula (VII):

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wherein each n is independently 1 or 2.

158. The siNA of embodiment 16 or 156, wherein the galactosamine is N-acetylgalactosamine (GalNAc) of Formula (VI):

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wherein

m is 1, 2, 3, 4, or 5;

each n is independently 1 or 2;

p is 0 or 1;

each R is independently H;

each Y is independently selected from —O—P(═O)(SH)—, —O—P(═O)(O)—, —O—P(═O)(OH)—, and —O—P(S)S—;

Z is H or a second protecting group;

either L is a linker or L and Y in combination are a linker; and

A is H, OH, a third protecting group, an activated group, or an oligonucleotide.

159. The siNA of embodiment 158, wherein A is an oligonucleotide.

160. The siNA of embodiment 158, wherein A is 1-2 oligonucleotides.

161. The siNA of any one of embodiments 158-160, wherein the oligonucleotide is dTdT.

162. The siNA according to any one of embodiments 16 and 156-161, wherein the galactosamine is attached to the 3′ end of the sense strand.

163. The siNA of embodiment 162, wherein the galactosamine is attached to the 3′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

164. The siNA according to any one of embodiments 16 and 156-161, wherein the galactosamine is attached to the 5′ end of the sense strand.

165. The siNA of embodiment 164, wherein the galactosamine is attached to the 5′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

166. The siNA according to any one of embodiments 16 and 156-161, wherein the galactosamine is attached to the 3′ end of the antisense strand.

167. The siNA of embodiment 166, wherein the galactosamine is attached to the 3′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

168. The siNA according to any one of embodiments 16 and 156-161, wherein the galactosamine is attached to the 5′ end of the antisense strand.

169. The siNA of embodiment 168, wherein the galactosamine is attached to the 5′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

170. The siNA according to any one of embodiments 1-130, 133-136, and 139-169, wherein the siNA further comprises a 5′-stabilized end cap.

171. The siNA according to any one of embodiments 16, 131, 132, and 170, wherein the 5′-stabilized end cap is a 5′ vinyl phosphonate or deuterated 5′ vinyl phosphonate.

172. The siNA according to any one of embodiments 16, 131, 132, and 170, wherein the 5′-stabilized end cap has the structure of Formula (Ia):

embedded image

wherein

R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

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wherein R¹is a nucleobase, aryl, heteroaryl, or H.

177. The siNA according to any one of embodiments 16, 131, 132, and 170, wherein the 5′-stabilized end cap is selected from the group consisting of Formulas (1A)-(15A), Formulas (9B)-(12B), Formulas (9AX)-(12AX), Formulas (9AY)-(12AY), Formulas (9BX)-(12BX), and Formulas (9BY)-(12BY):

embedded image

178. The siNA according to any one of embodiments 131, 132, and 170, wherein the 5′-stabilized end cap has the structure of Formula (Ic):

embedded image

wherein

R¹is a nucleobase, aryl, heteroaryl, or H,

R²is

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wherein R¹is a nucleobase, aryl, heteroaryl, or H.

182. The siNA according to any one of embodiments 16, 131, 132, and 170, wherein the 5′-stabilized end cap is selected from the group consisting of Formulas (21A)-(35A), Formulas (29B)-(32B), Formulas (29AX)-(32AX), Formulas (29AY)-(32AY), Formulas (29BX)-(32BX), and Formulas (29BY)-(32BY):

embedded image

183. The siNA according to any one of embodiments 1-182, wherein the antisense strand comprises at least one thermally destabilizing nucleotide selected from:

184. The siNA according to any one of embodiments 1-182, wherein the sense strand comprises at least one thermally destabilizing nucleotide selected from:

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185. The siNA according to any one of embodiments 1-182, wherein the first nucleotide sequence comprises at least one thermally destabilizing nucleotide selected from:

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186. The siNA according to any one of embodiments 1-182, wherein the second nucleotide sequence comprises at least one thermally destabilizing nucleotide selected from:

embedded image

187. The siNA according to any one of embodiments 16, 131, 132, and 170-186, wherein the 5′-stabilized end cap is attached to the 5′ end of the antisense strand.

188. The siNA of embodiment 187, wherein the 5′-stabilized end cap is attached to the 5′ end of the antisense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

189. The siNA according to any one of embodiments 16, 131, 132, and 170-186, wherein the 5′-stabilized end cap is attached to the 5′ end of the sense strand.

190. The siNA of embodiment 189, wherein the 5′-stabilized end cap is attached to the 5′ end of the sense strand via one or more linkers independently selected from a phosphodiester linker, phosphorothioate linker, or phosphorodithioate linker.

191. The siNA according to any preceding embodiment, wherein the target gene is a viral gene.

192. The siNA of embodiment 191, wherein the viral gene is from a DNA virus.

193. The siNA of embodiment 192, wherein the DNA virus is a double-stranded DNA (dsDNA) virus.

194. The siNA of embodiment 193, wherein the dsDNA virus is a hepadnavirus.

195. The siNA of embodiment 194, wherein the hepadnavirus is a hepatitis B virus (HBV).

196. The siNA of embodiment 195, wherein the HBV is selected from HBV genotypes A-J.

197. The siNA of embodiment 195 or 196, wherein the target gene is selected from the S gene or X gene of the HBV.

198. The siNA according to any one of embodiments 1-197, wherein the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides within positions 200-720 or 1100-1700 of SEQ ID NO: 410.

199. The siNA according to any one of embodiments 1-197, wherein the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides within positions 200-280, 300-445, 460-510, 650-720, 1170-1220, 1250-1300, or 1550-1630 of SEQ ID NO: 410.

200. The siNA according to any one of embodiments 1-197, wherein the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides within positions 200-230, 250-280, 300-330, 370-400, 405-445, 460-500, 670-700, 1180-1210, 1260-1295, 1520-1550, or 1570-1610 of SEQ ID NO: 410.

201. The siNA according to any one of embodiments 1-197, wherein the second nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% complementary to 15 to 30 nucleotides starting at position 203, 206, 254, 305, 375, 409, 412, 415, 416, 419, 462, 466, 467, 674, 676, 1182, 1262, 1263, 1268, 1526, 1577, 1578, 1580, 1581, 1583, or 1584 of SEQ ID NO: 410.

202. The siNA according to any one of embodiments 1-201, wherein the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides within positions 200-720 or 1100-1700 of SEQ ID NO: 410.

203. The siNA according to any one of embodiments 1-201, wherein the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides within positions 200-280, 300-445, 460-510, 650-720, 1170-1220, 1250-1300, or 1550-1630 of SEQ ID NO: 410.

204. The siNA according to any one of embodiments 1-201, wherein the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides within positions 200-230, 250-280, 300-330, 370-400, 405-445, 460-500, 670-700, 1180-1210, 1260-1295, 1520-1550, or 1570-1610 of SEQ ID NO: 410.

205. The siNA according to any one of embodiments 1-201, wherein the first nucleotide sequence is at least about 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% identical to 15 to 30 nucleotides starting at position 203, 206, 254, 305, 375, 409, 412, 415, 416, 419, 462, 466, 467, 674, 676, 1182, 1262, 1263, 1268, 1526, 1577, 1578, 1580, 1581, 1583, or 1584 of SEQ ID NO: 410.

206. The siNA according to any preceding embodiment, wherein the first nucleotide sequence comprises a nucleotide sequence of any one SEQ ID NOs: 1-56, 103-158, and 205-260.

207. The siNA according to any preceding embodiment, wherein the second nucleotide sequence comprises a nucleotide sequence of any one of SEQ ID NOs: 57-102, 159-204, and 261-306.

208. The siNA according to any preceding embodiment, wherein the sense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 307-362 and 415-444.

209. The siNA according to any preceding embodiment, wherein the antisense strand comprises a nucleotide sequence of any one of SEQ ID NOs: 363-409, 445-533, and 536-539.

210. The siNA according to any preceding embodiment, wherein at least one end of the siNA is a blunt end.

211. The siNA according to any preceding embodiment, wherein at least one end of the siNA comprises an overhang, wherein the overhang comprises at least one nucleotide.

212. The siNA according to any one of embodiments 1-209, wherein both ends of the siNA comprise an overhang, wherein the overhang comprises at least one nucleotide.

213. The siNA according to any preceding embodiment, wherein the siNA is selected from ds-siNA-001 to ds-siNA-0178.

214. The siNA according to any preceding embodiment, wherein at least one 2′-fluoro nucleotide or 2′-O-methyl nucleotide is a 2′-fluoro or 2-O-methyl nucleotide mimic of Formula (V):

embedded image

wherein

- R¹is independently a nucleobase, aryl, heteroaryl, or H, Q¹and Q²are independently S or O,
- R⁵is independently —OCD₃, —F, or —OCH₃, and
- R⁶and R⁷are independently H, D, or CD₃.
  
  215. The siNA of embodiment 214, wherein the 2′-fluoro or 2′-O-methyl nucleotide mimic is a nucleotide mimic of Formula (16)-Formula (20):

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wherein R¹is a nucleobase and R²is independently F or —OCH₃.

216. The siNA according to any preceding embodiment, wherein at least one 2′-fluoro nucleotide is a 2′-fluoro nucleotide mimic.

217. The siNA according to embodiment 216, wherein at least one 2′-fluoro nucleotide on the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

218. The siNA according to embodiment 216 or 217, wherein the nucleotide at position 2 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

219. The siNA according to any one of embodiments 216-218, wherein the nucleotide at position 5 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

220. The siNA according to any one of embodiments 216-219, wherein the nucleotide at position 6 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

221. The siNA according any one of embodiments 216-220, wherein the nucleotide at position 8 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

222. The siNA according to any one of embodiments 216-221, wherein the nucleotide at position 10 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

223. The siNA according to any one of embodiments 216-222, wherein the nucleotide at position 14 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

224. The siNA according to any one of embodiments 216-223, wherein the nucleotide at position 16 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

225. The siNA according to any one of embodiments 216-224, wherein the nucleotide at position 17 from the 5′ end of the antisense strand or the second nucleotide sequence is a 2′-fluoro nucleotide mimic.

226. The siNA according to any one of embodiments 216-225, wherein at least one 2′-fluoro nucleotide on the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

227. The siNA according to any one of embodiments 216-226, wherein the nucleotide at position 3 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

228. The siNA according to any one of embodiments 216-227, wherein the nucleotide at position 5 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

229. The siNA according to any one of embodiments 216-228, wherein the nucleotide at position 7 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

230. The siNA according to any one of embodiments 216-229, wherein the nucleotide at position 8 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

231. The siNA according to any one of embodiments 216-230, wherein the nucleotide at position 9 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

232. The siNA according to any one of embodiments 216-231, wherein the nucleotide at position 10 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

233. The siNA according to any one of embodiments 216-232, wherein the nucleotide at position 11 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

234. The siNA according to any one of embodiments 216-233, wherein the nucleotide at position 12 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

235. The siNA according to any one of embodiments 216-234, wherein the nucleotide at position 14 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

236. The siNA according to any one of embodiments 216-235, wherein the nucleotide at position 17 from the 5′ end of the sense strand or the first nucleotide sequence is a 2′-fluoro nucleotide mimic.

237. The siNA according to any one of embodiments 216-236, wherein at least 1, 2, 3, 4, 5, 6, or more 2′-fluoro nucleotide mimics is a f4P nucleotide

embedded image

238. The siNA according to any one of embodiments 216-237, wherein less than or equal to 10, 9, 8, 7, 6, 5, 4, 3, or 2 2′-fluoro nucleotide mimics is a f4P nucleotide

embedded image

239. The siNA according to any one of embodiments 216-238, wherein 1, 2, 3, 4, 5, 6, or more 2′-fluoro nucleotide mimics is a f2P nucleotide

embedded image

240. The siNA according to any one of embodiments 216-239, wherein less than or equal to 10, 9, 8, 7, 6, 5, 4, 3, or 2 2′-fluoro nucleotide mimics is a f2P nucleotide

embedded image

241. The siNA according to any one of embodiments 216-240, wherein 1, 2, 3, 4, 5, 6, or more 2′-fluoro nucleotide mimics is a fX nucleotide

embedded image

242. The siNA according to any one of embodiments 216-241, wherein less than or equal to 10, 9, 8, 7, 6, 5, 4, 3, or 2 2′-fluoro nucleotide mimics is a fX nucleotide

embedded image

243. The siNA according to any preceding embodiment, wherein the first nucleotide from the 5′ end of the sense strand or first nucleotide sequence is a d2vd3 nucleotide

embedded image

244. The siNA according to any preceding embodiment, wherein the first nucleotide from the 3′ end of the sense strand or first nucleotide sequence is a d2vd3 nucleotide

embedded image

245. The siNA according to any preceding embodiment, wherein the first nucleotide from the 5′ end of the antisense strand or second nucleotide sequence is a d2vd3 nucleotide

embedded image

246. The siNA according to any preceding embodiment, wherein the first nucleotide from the 3′ end of the antisense strand or second nucleotide sequence is a d2vd3 nucleotide

embedded image

247. A composition comprising the siNA according to any one of embodiments 1-246.

248. A composition comprising 2, 3, 4, 5, 6, 7, 8, 9, 10 or more siNAs according to any one of embodiments 1-246.

249. The composition of embodiment 248, wherein at least 1, 2, 3, 4, 5, or more siNAs target an S gene of HBV.

250. The composition of embodiment 248 or 249, wherein at least 1, 2, 3, 4, 5, or more siNAs target an X gene of HBV.

251. The composition according to any one of embodiments 247-250, further comprising an additional HBV treatment agent.

252. The composition of embodiment 251, wherein the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy.

253. The composition of embodiment 252, wherein the oligonucleotide therapy is an additional siNA.

254. The composition of embodiment 253, wherein the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178.

255. The composition of embodiment 252, wherein the oligonucleotide therapy is an antisense oligonucleotide (ASO), NAPs, or STOPS™

256. The composition of embodiment 255, wherein the ASO is ASO 1 or ASO 2.

257. The composition of embodiment 251 or 252, wherein the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158.

258. A method of treating a disease in a subject in need thereof, comprising administering to the subject the siNA according to any one of embodiments 1-246.

259. A method of treating a disease in a subject in need thereof, comprising administering to the subject the composition according to any one of embodiments 247-257.

260. The method of embodiment 258 or 259, wherein the disease is a viral disease.

261. The method of embodiment 260, wherein the viral disease is caused by a DNA virus.

262. The method of embodiment 261, wherein the DNA virus is a double stranded DNA (dsDNA) virus.

263. The method of embodiment 262, wherein the dsDNA virus is a hepadnavirus.

264. The method of embodiment 263, wherein the hepadnavirus is a hepatitis B virus (HBV).

265. The method of embodiment 264, wherein the HBV is selected from HBV genotypes A-J.

266. The method of any of embodiments 258-265, further comprising administering an additional HBV treatment agent.

267. The method of embodiment 266, wherein the siNA or the composition and the additional HBV treatment agent are administered concurrently.

268. The method of embodiment 266, wherein the siNA or the composition and the additional HBV treatment agent are administered sequentially.

269. The method of embodiment 266, wherein the siNA or the composition is administered prior to administering the additional HBV treatment agent.

270. The method of embodiment 266, wherein the siNA or the composition is administered after administering the additional HBV treatment agent.

271. The method of any one of embodiments 266-270, wherein the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy.

272. The method of embodiment 271, wherein the oligonucleotide therapy is an additional siNA.

273. The method of embodiment 272, wherein the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178.

274. The method of embodiment 271, wherein the oligonucleotide therapy is an antisense oligonucleotide (ASO), NAPs, or STOPs.

275. The method of embodiment 274, wherein the ASO is ASO 1 or ASO 2.

276. The method of embodiment 270 or 271, wherein the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158.

277. The method of embodiment 258 or 259, wherein the disease is a liver disease.

278. The method of embodiment 277, wherein the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC).

279. The method of embodiment 278, wherein the NAFLD is nonalcoholic steatohepatitis (NASH).

280. The method of any of embodiments 277-279 further comprising administering to the subject a liver disease treatment agent.

281. The method of embodiment 280, wherein the liver disease treatment agent is selected from a peroxisome proliferator-activator receptor (PPAR) agonist, farnesoid X receptor (FXR) agonist, lipid-altering agent, and incretin-based therapy.

282. The method of embodiment 281, wherein the PPAR agonist is selected from a PPARα agonist, dual PPARα/δ agonist, PPARγ agonist, and dual PPARα/γ agonist.

283. The method of embodiment 282, wherein the dual PPARα agonist is a fibrate.

284. The method of embodiment 282, wherein the PPARα/δ agonist is elafibranor.

285. The method of embodiment 282, wherein the PPARγ agonist is a thiazolidinedione (TZD).

286. The method of embodiment 282, wherein TZD is pioglitazone.

287. The method of embodiment 282, wherein the dual PPARα/γ agonist is saroglitazar.

288. The method of embodiment 281, wherein the FXR agonist is obeticholic acis (OCA).

289. The method of embodiment 281, wherein the lipid-altering agent is aramchol.

290. The method of embodiment 281, wherein the incretin-based therapy is a glucagon-like peptide 1 (GLP-1) receptor agonist or dipeptidyl peptidase 4 (DPP-4) inhibitor.

291. The method of embodiment 290, wherein the GLP-1 receptor agonist is exenatide or liraglutide.

292. The method of embodiment 290, wherein the DPP-4 inhibitor is sitagliptin or vildagliptin.

293. The method of any one of embodiments 280-292, wherein the siNA or composition and the liver disease treatment agent are administered concurrently.

294. The method of any one of embodiments 280-292, wherein the siNA or composition and the liver disease treatment agent are administered sequentially.

295. The method of any one of embodiments 280-292, wherein the siNA or composition is administered prior to administering the liver disease treatment agent.

296. The method of any one of embodiments 280-292, wherein the siNA or composition is administered after administering the liver disease treatment agent.

297. The method of any of one embodiments 258-296, wherein the siNA or the composition is administered at a dose of at least 1 mg/kg, 2 mg/kg, 3 mg/kg, 4 mg/kg, 5 mg/kg, 6 mg/kg, 7 mg/kg, 8 mg/kg, 9 mg/kg, 10 mg/kg, 11 mg/kg, 12 mg/kg, 13 mg/kg 14 mg/kg, or 15 mg/kg.

298. The method of any of one embodiments 258-296, wherein the siNA or the composition is administered at a dose of between 0.5 mg/kg to 50 mg/kg, 0.5 mg/kg to 40 mg/kg 0.5 mg/kg to 30 mg/kg, 1 mg/kg to 50 mg/kg, 1 mg/kg to 40 mg/kg, 1 mg/kg to 30 mg/kg, 1 mg/kg to 20 mg/kg, 3 mg/kg to 50 mg/kg, 3 mg/kg to 40 mg/kg, 3 mg/kg to 30 mg/kg, 3 mg/kg to 20 mg/kg, 3 mg/kg to 15 mg/kg, 3 mg/kg to 10 mg/kg, 4 mg/kg to 50 mg/kg, 4 mg/kg to 40 mg/kg, 4 mg/kg to 30 mg/kg, 4 mg/kg to 20 mg/kg, 4 mg/kg to 15 mg/kg, 4 mg/kg to 10 mg/kg, 5 mg/kg to 50 mg/kg, 5 mg/kg to 40 mg/kg, 5 mg/kg to 30 mg/kg, 5 mg/kg to 20 mg/kg, 5 mg/kg to 15 mg/kg, or 5 mg/kg to 10 mg/kg.

299. The method of any of one embodiments 258-298, wherein the siNA or the composition is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times.

300. The method of any of one embodiments 258-298, wherein the siNA or the composition is administered at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times a day, at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times a week, or at least 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times a month.

301. The method of any of one embodiments 258-300, wherein the siNA or the composition are administered at least once every 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 days.

302. The method of any of one embodiments 258-301, wherein the siNA or the composition is administered for a period of at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21 days, or at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 40, 45, 50, 51, 52, 53, 54, or 55 weeks.

303. The method of any of one embodiments 258-302, wherein the siNA or the composition is administered at a single dose of 5 mg/kg.

304. The method of any of one embodiments 258-302, wherein the siNA or the composition is administered at a single dose of 10 mg/kg.

305. The method of any of one embodiments 258-302, wherein the siNA or the composition is administered at three doses of 10 mg/kg once a week.

306. The method of any of one embodiments 258-302, wherein the siNA or the composition is administered at three doses of 10 mg/kg once every three days.

307. The method of any of one embodiments 258-302, wherein the siNA or the composition is administered at five doses of 10 mg/kg once every three days.

308. The method of any of one embodiments 258-302, wherein the siNA or the composition is administered at six doses of ranging from 1 mg/kg to 15 mg/kg, 1 mg/kg to 10 mg/kg, 2 mg/kg to 15 mg/kg, 2 mg/kg to 10 mg/kg, 3 mg/kg to 15 mg/kg, or 3 mg/kg to 10 mg/kg.

309. The method of embodiment 308, wherein the first dose and second dose are administered at least 3 days apart.

310. The method of embodiment 308 or 309, wherein the second dose and third dose are administered at least 4 days apart.

311. The method of any one of embodiments 308-310, wherein the third dose and fourth dose, fourth dose and fifth dose, or fifth dose and sixth dose are administered at least 7 days apart.

312. The method of any one of embodiments 258-311, wherein the siNA or the composition are administered in a particle or viral vector.

313. The method of embodiment 312, wherein the viral vector is a vector of adenovirus, adeno-associated virus (AAV), alphavirus, flavivirus, herpes simplex virus, lentivirus, measles virus, picornavirus, poxvirus, retrovirus, or rhabdovirus.

314. The method of embodiment 312, wherein the viral vector is a recombinant viral vector.

315. The method according to any one of embodiments 312-314, wherein the viral vector is selected from AAVrh.74, AAVrh.10, AAVrh.20, AAV-1, AAV-2, AAV-3, AAV-4, AAV-5, AAV-6, AAV-7, AAV-8, AAV-9, AAV-10, AAV-11, AAV-12 and AAV-13.

316. The method according to any one of embodiments 258-315, wherein the siNA or the composition is administered systemically.

317. The method according to any one of embodiments 258-315, wherein the siNA or the composition is administered locally.

318. The method according to any one of embodiments 258-317, wherein the siNA or the composition is administered intravenously, subcutaneously, or intramuscularly.

319. Use of the siNA according to any one of embodiments 1-246 or the composition according to any one of embodiments 247-257 in the manufacture of a medicament for treating a disease.

320. The use of embodiment 319, wherein the disease is a viral disease.

321. The use of embodiment 320, wherein the viral disease is caused by a DNA virus.

322. The use of embodiment 321, wherein the DNA virus is a double stranded DNA (dsDNA virus).

323. The use of embodiment 321, wherein the dsDNA virus is a hepadnavirus.

324. The use of embodiment 323, wherein the hepadnavirus is a hepatitis B virus (HBV).

325. The use of embodiment 324, wherein the HBV is selected from HBV genotypes A-J.

326. The use of any of one of embodiments 319-325, further comprising an additional HBV treatment agent in the manufacture of the medicament.

327. The use of embodiment 326, wherein the additional HBV treatment agent is selected from a nucleotide analog, nucleoside analog, a capsid assembly modulator (CAM), a recombinant interferon, an entry inhibitor, a small molecule immunomodulator and oligonucleotide therapy.

328. The use of embodiment 327, wherein the oligonucleotide therapy is an additional siNA.

329. The use of embodiment 328, wherein the additional siNA is selected from any of ds-siNA-001 to ds-siNA-0178.

330. The use of embodiment 327, wherein the oligonucleotide therapy is an antisense oligonucleotide (ASO), NAPs, or STOPs.

331. The use of embodiment 330, wherein the ASO is ASO 1 or ASO2.

332. The use of embodiment 326 or 327, wherein the additional HBV treatment agent is selected from HBV STOPS™ ALG-010133, HBV CAM ALG-000184, ASO 1, recombinant interferon alpha 2b, IFN-a, PEG-IFN-a-2a, lamivudine, telbivudine, adefovir dipivoxil, clevudine, entecavir, tenofovir alafenamide, tenofovir disoproxil, NVR3-778, BAY41-4109, JNJ-632, JNJ-3989 (ARO-HBV), RG6004, GSK3228836, REP-2139, REP-2165, AB-729, VIR-2218, RG6346 (DCR-HBVS), JNJ-6379, GLS4, ABI-HO731, JNJ-440, NZ-4, RG7907, EDP-514, AB-423, AB-506, ABI-H03733 and ABI-H2158.

333. The use of embodiment 319, wherein the disease is a liver disease.

334. The use of embodiment 333, wherein the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC).

335. The use of embodiment 334, wherein the NAFLD is nonalcoholic steatohepatitis (NASH).

336. The use of any of embodiments 333-335, further comprising a liver disease treatment agent in the manufacture of the medicament.

337. The use of embodiment 336, wherein the liver disease treatment agent is selected from a peroxisome proliferator-activator receptor (PPAR) agonist, farnesoid X receptor (FXR) agonist, lipid-altering agent, and incretin-based therapy.

338. The use of embodiment 337, wherein the PPAR agonist is selected from a PPARα agonist, dual PPARα/δ agonist, PPARγ agonist, and dual PPARα/γ agonist.

339. The use of embodiment 338, wherein the dual PPARα agonist is a fibrate.

340. The use of embodiment 338, wherein the PPARα/δ agonist is elafibranor.

341. The use of embodiment 338, wherein the PPARγ agonist is a thiazolidinedione (TZD).

342. The use of embodiment 341, wherein TZD is pioglitazone.

343. The use of embodiment 338, wherein the dual PPARα/γ agonist is saroglitazar.

344. The use of embodiment 337, wherein the FXR agonist is obeticholic acis (OCA).

345. The use of embodiment 337, wherein the lipid-altering agent is aramchol.

346. The use of embodiment 337, wherein the incretin-based therapy is a glucagon-like peptide 1 (GLP-1) receptor agonist or dipeptidyl peptidase 4 (DPP-4) inhibitor.

347. The use of embodiment 346, wherein the GLP-1 receptor agonist is exenatide or liraglutide.

348. The use of embodiment 346, wherein the DPP-4 inhibitor is sitagliptin or vildagliptin.

349. The siNA according to any one of embodiments 1-246 for use as a medicament.

350. The composition according to any one of embodiments 247-257 for use as a medicament.

351. The siNA according to any one of embodiments 1-246 for use in the treatment of a disease.

352. The siNA of embodiment 351, wherein the disease is a viral disease.

353. The siNA of embodiment 352, wherein the viral disease is caused by a DNA virus.

354. The siNA of embodiment 353, wherein the DNA virus is a double stranded DNA (dsDNA virus).

355. The siNA of embodiment 354, wherein the dsDNA virus is a hepadnavirus.

356. The siNA of embodiment 355, wherein the hepadnavirus is a hepatitis B virus (HBV).

357. The siNA of embodiment 356, wherein the HBV is selected from HBV genotypes A-J.

358. The siNA of embodiment 351, wherein the disease is a liver disease.

359. The siNA of embodiment 358, wherein the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC).

360. The siNA of embodiment 359, wherein the NAFLD is nonalcoholic steatohepatitis (NASH).

361. The composition according to any one of embodiments 247-257, for use in the treatment of a disease.

362. The composition of embodiment 361, wherein the disease is a viral disease.

363. The composition of embodiment 362, wherein the viral disease is caused by a DNA virus.

364. The composition of embodiment 363, wherein the DNA virus is a double stranded DNA (dsDNA virus).

365. The composition of embodiment 364, wherein the dsDNA virus is a hepadnavirus.

366. The composition of embodiment 365, wherein the hepadnavirus is a hepatitis B virus (HBV).

367. The composition of embodiment 366, wherein the disease is a liver disease.

368. The composition of embodiment 367, wherein the liver disease is a nonalcoholic fatty liver disease (NAFLD) or hepatocellular carcinoma (HCC).

369. The composition of embodiment 368, wherein the NAFLD is nonalcoholic steatohepatitis (NASH).

Tables

TABLE 1

Non-modified Nucleotide Sequences

First Nucleotide

Second Nucleotide

SEQ ID NO.
Sequence (5′-3′)
SEQ ID NO.
Sequence (5′-3′

1
ACCGUGUGCACUUCGCUUC
57
GAAGCGAAGUGCACACGGUCC

2
ACCGUGUGCACUUCGCUUC
58
GAAGCGAAGUGCACACGGU

3
ACUUCGCUUCACCUCUGCA
59
UGCAGAGGUGAAGCGAAGUGC

4
AGUGUUUGCUGACGCAACC
60
GGUUGCGUCAGCAAACACUUG

5
CAGGCGGGGUUUUUCUUGU
61
ACAAGAAAAACCCCGCCUGUA

6
CAGGCGGGGUUUUUCUUGU
62
ACAAGAAAAAACCCCGCCUG

7
CAGUUUACUAGUGCCAUUU
63
AAAUGGCACUAGUAAACUGAG

8
CAGUUUACUAGUGCCAUUU
64
AAAUGGCACUAGUAAACUG

9
CAUCCUGCUGCUAUGCCUC
65
GAGGCAUAGCAGCAGGAUGAA

10
CAUCCUGCUGCUAUGCCUCAU
66
AUGAGGCAUAGCAGCAGGAUGAA

11
CAUCCUGCUGCUAUGCCUC
67
GAGGCAUAGCAGCAGGAUG

12
CCGUGUGCACUUCGCUUCA
68
UGAAGCGAAGUGCACACGGUC

13
CCGUGUGCACUUCGCUUCA
69
UGAAGCGAAGUGCACACGG

14
CCUGCUGCUAUGCCUCAUCUU
70
AAGAUGAGGCAUAGCAGCAGGAU

15
CUCAGUUUACUAGUGCCAU
71
AUGGCACUAGUAAACUGAGCC

16
CUCAGUUUACUAGUGCCAU
71
AUGGCACUAGUAAACUGAGCC

17
CUCAGUUUACUAGUGCCAU
71
AUGGCACUAGUAAACUGAGCC

18
CUCAGUUUACUAGUGCCAU
72
AUGGCACUAGUAAACUGAG

19
CUCAGUUUACUAGUGCCAU
72
AUGGCACUAGUAAACUGAG

20
CUGCUAUGCCUCAUCUUCU
73
AGAAGAUGAGGCAUAGCAGCA

21
CUGCUAUGCCUCAUCUUCU
73
AGAAGAUGAGGCAUAGCAGCA

22
CUGCUAUGCCUCAUCUUCU
74
AGAAGAUGAGGCAUAGCAG

23
CUGCUAUGCCUCAUCUUCU
74
AGAAGAUGAGGCAUAGCAG

24
CUGCUGCUAUGCCUCAUCU
75
AGAUGAGGCAUAGCAGCAGGA

25
CUGCUGCUAUGCCUCAUCU
76
AGAUGAGGCAUAGCAGCAG

26
CUGCUGCUAUGCCUCAUCU
76
AGAUGAGGCAUAGCAGCAG

27
CUUCGCUUCACCUCUGCACGU
77
ACGUGCAGAGGUGAAGCGAAGUG

28
GCACUUCGCUUCACCUCUGCA
78
UGCAGAGGUGAAGCGAAGUGCAC

29
GCCGAUCCAUACUGCGGAA
79
UUCCGCAGUAUGGAUCGGCAG

30
GCCGGGUUUUUCUUGUUGA
80
UUCCGCAGUAUGGAUCGGC

31
GCGGGGUUUUUCUUGUUGA
81
UCAACAAGAAAAACCCCGCCU

32
GCGGGGUUUUUCUUGUUGA
81
UCAACAAGAAAAACCCCGCCU

33
GCGGGGUUUUUCUUGUUGA
82
UCAACAAGAAAAACCCCGC

34
GCGGGGUUUUUCUUGUUGA
82
UCAACAAGAAAAACCCCGC

35
GCUGCUAUGCCUCAUCUUCUU
83
AAGAAGAUGAGGCAUAGCAGCAG

36
GGAUGUGUCUGCGGCGUUUUA
84
UAAAACGCCGCAGACACAUCCAG

37
GGCCAAAAUUCGCAGUCCC
85
GGGACUGCGAAUUUUGGCCAA

38
GGCGCACCUCUCUUUACGC
86
GCGUAAAGAGAGGUGCGCCCC

39
GUAUGUUGCCCGUUUGUCC
87
GGACAAACGGGCAACAUACCU

40
GUGGUGGACUUCUCUCAAU
88
AUUGAGAGAAGUCCACCACGA

41
GUGUGCACUUCGCUUCACC
89
GGUGAAGCGAAGUGCACACGG

42
GUUGCCCGUUUGUCCUCUA
90
UAGAGGACAAACGGGCAACAU

43
GUUGCCCGUUUGUCCUCUA
91
UAGAGGACAAACGGGCAAC

44
UCCAUACUGCGGAACUCCU
92
AGGAGUUCCGCAGUAUGGAUC

45
UCCAUACUGCGGAACUCCU
93
AGGAGUUCCGCAGUAUGGA

46
UCGUGGUGGACUUCUCUCAAU
94
AUUGAGAGAAGUCCACCACGAGU

47
UGCACUUCGCUUCACCUCU
95
AGAGGUGAAGCGAAGUGCACA

48
UGCCGAUCCAUACUGCGGA
96
UCCGCAGUAUGGAUCGGCAGA

49
UGCCGAUCCAUACUGCGGA
97
UCCGCAGUAUGGAUCGGCA

50
UGCUAUGCCUCAUCUUCUU
98
AAGAAGAUGAGGCAUAGCAGC

51
UGUGCACUUCGCUUCACCU
99
AGGUGAAGCGAAGUGCACACG

52
UGUGCACUUCGCUUCACCU
99
AGGUGAAGCGAAGUGCACACG

53
UGUGCACUUCGCUUCACCU
100
AGGUGAAGCGAAGUGCACA

54
UGUGCACUUCGCUUCACCU
100
AGGUGAAGCGAAGUGCACA

55
UUGCCCGUUUGUCCUCUAA
101
UUAGAGGACAAACGGGCAACA

56
UUGCCCGUUUGUCCUCUAA
102
UUAGAGGACAAACGGGCAA

TABLE 2

2′-OMe and 2′-F Modified Nucleotide Sequences

First Nucleotide

Second Nucleotide

SEQ ID NO.
Sequence (5′-3′)
SEQ ID NO.
Sequence (5′-3′)

103
mAmCfCmGmUmGfUfGfCmAm
159
mGfAmAmGmCmGmAmAmGmUmGm

CfUmUmCmGmCfUmUmC

CmAfCmAmCmGmGmUmCmC

104
mAmCfCmGmUmGfUfGfCmAm
160
mGfAmAmGmCmGmAmAmGmUmGm

CfUmUmCmGmCfUmUmC

CmAfCmAmCmGmGmU

105
mAmCfUmUmCmGfCfUfUmCm
161
mUfGmCmAmGmAmGmGmUmGmAm

AfCmCmUmCmUfGmCmA

AmGfCmGmAmAmGmUmGmC

106
mAmGfUmGmUmUfUfGfCmUm
162
mGfGmUmUmGmCmGmUmCmAmGm

GfAmCmGmCmAfAmCmC

CmAfAmAmCmAmCmUmUmG

107
mCmAfGmGmCmGfGfGfGmUm
163
mAfCmAmAmGmAmAmAmAmAmCm

UfUmUmUmCmUfUmGmU

CmCfCmGmCmCmUmGmUmA

108
mCmAfGmGmCmGfGfGfGmUm
164
mAfCmAmAmGmAmAmAmAmAmAm

UfUmUmUmCmUfUmGmU

CmCmCfCmGmCmCmUmG

109
mCmAfGmUmUmUfAfCfUmAm
165
mAfAmAmUmGmGmCmAmCmUmAm

GfUmGmCmCmAfUmUmU

GmUfAmAmAmCmUmGmAmG

110
mCmAfGmUmUmUfAfCfUmAm
166
mAfAmAmUmGmGmCmAmCmUmAm

GfUmGmCmCmAfUmUmU

GmUfAmAmAmCmUmG

111
mCmAfUmCmCmUfGfCfUmGm
167
mGfAmGmGmCmAmUmAmGmCmAm

CfUmAmUmGmCfCmUmC

GmCfAmGmGmAmUmGmAmA

112
mCmAmUmCmCmUfGmCfUfGf
168
mAfUmGmAmGfGmCmAmUmAmGm

CmUmAmUmGmCmCmUmCmAmU

CmAfGmCfAmGmGmAmUmGmAmA

113
mCmAfUmCmCmUfGfCfUmGm
169
mGfAmGmGmCmAmUmAmGmCmAm

CfUmAmUmGmCfCmUmC

GmCfAmGmGmAmUmG

114
mCmCfGmUmGmUfGfCfAmC
170
mUfGmAmAmGmCmGmAmAmGmUm

mUfUmCmGmCmUfUmCmA

GmCfAmCmAmCmGmGmUmC

115
mCmCfGmUmGmUfGfCfAmCm
171
mUfGmAmAmGmCmGmAmAmGmUm

UfUmCmGmCmUfUmCmA

GmCfAmCmAmCmGmG

116
mCmCmUmGmCmUfGmCfUfAf
172
mAfAmGmAmUfGmAmGmGmCmAm

UmGmCmCmUmCmAmUmCmUmU

UmAfGmCfAmGmCmAmGmGmAmU

117
mCmUfCmAmGmUfUfUfAmCm
173
mAfUmGmGmCmAmCmUmAmGmUm

UfAmGmUmGmCfCmAmU

AmAfAmCmUmGmAmGmCmC

118
mCmUmCmAmGmUfUmUmAmCm
173
mAfUmGmGmCmAmCmUmAmGmUm

UmAmGmUmGmCmCmAmU

AmAfAmCmUmGmAmGmCmC

119
mCmUfCmAmGmUfUfUmAmCm
173
mAfUmGmGmCmAmCmUmAmGmUm

UmAmGmUmGmCfCmAmU

AmAfAmCmUmGmAmGmCmC

120
mCmUfCmAmGmUfUfUfAmCm
174
mAfUmGmGmCmAmCmUmAmGmUm

UfAmGmUmGmCfCmAmU

AmAfAmCmUmGmAmG

121
mCmUfCmAmGmUfUfUmAmCm
174
mAfUmGmGmCmAmCmUmAmGmUm

UmAmGmUmGmCfCmAmU

AmAfAmCmUmGmAmG

122
mCmUfGmCmUmAfUfGfCmCm
175
mAfGmAmAmGmAmUmGmAmGmGm

UfCmAmUmCmUfUmCmU

CmAfUmAmGmCmAmGmCmA

123
mCmUfGmCmUmAfUfGmCmCm
175
mAfGmAmAmGmAmUmGmAmGmGm

UmCmAmUmCmUfUmCmU

CmAfUmAmGmCmAmGmCmA

124
mCmUfGmCmUmAfUfGfCmCm
176
mAfGmAmAmGmAmUmGmAmGmGm

UfCmAmUmCmUfUmCmU

CmAfUmAmGmCmAmG

125
mCmUfGmCmUmAfUfGmCmCm
176
mAfGmAmAmGmAmUmGmAmGmGm

UmCmAmUmCmUfUmCmU

CmAfUmAmGmCmAmG

126
mCmUfGmCmUmGfCfUfAmUm
177
mAfGmAmUmGmAmGmGmCmAmUm

GfCmCmUmCmAfUmCmU

AmGfCmAmGmCmAmGmGmA

127
mCmUfGmCmUmGfCfUfAmUm
178
mAfGmAmUmGmAmGmGmCmAmUm

GfCmCmUmCmAfUmCmU

AmGfCmAmGmCmAmG

128
mCmUfGmCmUmGfCfUmAmUm
178
mAfGmAmUmGmAmGmGmCmAmUm

GmCmCmUmCmAfUmCmU

AmGfCmAmGmCmAmG

129
mCmUmUmCmGmCfUmUfCfAf
179
mAfCmGmUmGfCmAmGmAmGmGm

CmCmUmCmUmGmCmAmCmGmU

UmGfAmAfGmCmGmAmAmGmUmG

130
mGmCmAmCmUmUfCmGfCfUf
180
mUfGmCmAmGfAmGmGmUmGmAm

UmCmAmCmCmUmCmUmGmCmA

AmGfCmGfAmAmGmUmGmCmAmC

131
mGmCfCmGmAmUfCfCfAmU
181
mUfUmCmCmGmCmAmGmUmAmUm

mAfCmUmGmCmGfGmAmA

GmGfAmUmCmGmGmCmAmG

132
mGmCfCmGmGmGfUfUfUmUm
182
mUfUmCmCmGmCmAmGmUmAmUm

UfCmUmUmGmUfUmGmA

GmGfAmUmCmGmGmC

133
mGmCfGmGmGmGfUfUfUmUm
183
mUfCmAmAmCmAmAmGmAmAmAm

UfCmUmUmGmUfUmGmA

AmAfCmCmCmCmGmCmCmU

134
mGmCfGmGmGmGfUfUmUmUm
183
mUfCmAmAmCmAmAmGmAmAmAm

UmCmUmUmGmUfUmGmA

AmAfCmCmCmCmGmCmCmU

135
mGmCfGmGmGmGfUfUfUmUm
184
mUfCmAmAmCmAmAmGmAmAmAm

UfCmUmUmGmUfUmGmA

AmAfCmCmCmCmGmC

136
mGmCfGmGmGmGfUfUmUmUm
184
mUfCmAmAmCmAmAmGmAmAmAm

UmCmUmUmGmUfUmGmA

AmAfCmCmCmCmGmC

137
mGmCmUmGmCmUfAmUfGfCf
185
mAfAmGmAmAfGmAmUmGmAmGm

CmUmCmAmUmCmUmUmCmUmU

GmCfAmUfAmGmCmAmGmCmAmG

138
mGmGmAmUmGmUfGmUfCfUf
186
mUfAmAmAmAfCmGmCmCmGmCm

GmCmGmGmCmGmUmUmUmUmA

AmGfAmCfAmCmAmUmCmCmAmG

139
mGmGfCmCmAmAfAfAfUmUm
187
mGfGmGmAmCmUmGmCmGmAmAm

CfGmCmAmGmUfCmCmC

UmUfUmUmGmGmCmCmAmA

140
mGmGfCmGmCmAfCfCfUmCm
188
mGfCmGmUmAmAmAmGmAmGmAm

UfCmUmUmUmAfCmGmC

GmGfUmGmCmGmCmCmCmC

141
mGmUfAmUmGmUfUfGfCmCm
189
mGfGmAmCmAmAmAmCmGmGmGm

CfGmUmUmUmGfUmCmC

CmAfAmCmAmUmAmCmCmU

142
mGmUfGmGmUmGfGfAfCmUm
190
mAfUmUmGmAmGmAmGmAmAmGm

UfCmUmCmUmCfAmAmU

UmCfCmAmCmCmAmCmGmA

143
mGmUfGmUmGmCfAfCfUmU
191
mGfGmUmGmAmAmGmCmGmAmAm

mCfGmCmUmUmCfAmCmC

GmUfGmCmAmCmAmCmGmG

144
mGmUfUmGmCmCfCfGfUmU
192
mUfAmGmAmGmGmAmCmAmAmAm

mUfGmUmCmCmUfCmUmA

CmGfGmGmCmAmAmCmAmU

145
mGmUfUmGmCmCfCfGfUmUm
193
mUfAmGmAmGmGmAmCmAmAmAm

UfGmUmCmCmUfCmUmA

CmGfGmGmCmAmAmC

146
mUmCfCmAmUmAfCfUfGmCm
194
mAfGmGmAmGmUmUmCmCmGmCm

GfGmAmAmCmUfCmCmU

AmGfUmAmUmGmGmAmUmC

147
mUmCfCmAmUmAfCfUfGmCm
195
mAfGmGmAmGmUmUmCmCmGmCm

GfGmAmAmCmUfCmCmU

AmGfUmAmUmGmGmA

148
mUmCmGmUmGmGfUmGfGfAf
196
mAfUmUmGmAfGmAmGmAmAmGm

CmUmUmCmUmCmUmCmAmAmU

UmCfCmAfCmCmAmCmGmAmGmU

149
mUmGfCmAmCmUfUfCfGmCm
197
mAfGmAmGmGmUmGmAmAmGmCm

UfUmCmAmCmCfUmCmU

GmAfAmGmUmGmCmAmCmA

150
mUmGfCmCmGmAfUfCfCmAm
198
mUfCmCmGmCmAmGmUmAmUmGm

UfAmCmUmGmCfGmGmA

GmAfUmCmGmGmCmAmGmA

151
mUmGfCmCmGmAfUfCfCmAm
199
mUfCmCmGmCmAmGmUmAmUmGm

UfAmCmUmGmCfGmGmA

GmAfUmCmGmGmCmA

152
mUmGfCmUmAmUfGfCfCmUm
200
mAfAmGmAmAmGmAmUmGmAmGm

CfAmUmCmUmUfCmUmU

GmCfAmUmAmGmCmAmGmC

153
mUmGfUmGmCmAfCfUfUmCm
201
mAfGmGmUmGmAmAmGmCmGmAm

GfCmUmUmCmAfCmCmU

AmGfUmGmCmAmCmAmCmG

154
mUmGfUmGmCmAfCfUmUmCm
201
mAfGmGmUmGmAmAmGmCmGmAm

GmCmUmUmCmAfCmCmU

AmGfUmGmCmAmCmAmCmG

155
mUmGfUmGmCmAfCfUfUmCm
202
mAfGmGmUmGmAmAmGmCmGmAm

GfCmUmUmCmAfCmCmU

AmGfUmGmCmAmCmA

156
mUmGfUmGmCmAfCfUmUmCm
202
mAfGmGmUmGmAmAmGmCmGmAm

GmCmUmUmCmAfCmCmU

AmGfUmGmCmAmCmA

157
mUmUfGmCmCmCfGfUmUmUm
203
mUfUmAmGmAmGmGmAmCmAmAm

GmUmCmCmUmCfUmAmA

AmCfGmGmGmCmAmAmCmA

158
mUmUfGmCmCmCfGfUfUmUm
204
mUfUmAmGmAmGmGmAmCmAmAm

GfUmCmCmUmCfUmAmA

AmCfGmGmGmCmAmA

mX = 2′-O-methyl nucleotide; fX = 2′-fluoro nucleotide

TABLE 3

2′-O-methyl and 2′-fluoro Modified Nucleotide

Sequences with Phosphorothioate Linkages

First Nucleotide

Second Nucleotide

SEQ ID NO.
Sequence (5′-3′)
SEQ ID NO.
Sequence (5′-3′

205
mApsmCpsfCmGmUmGfUfGfC
261
mGpsfApsmAmGmCmGmAmAmGm

mAmCfUmUmCmGmCfUmUmC

UmGmCmAfCmAmCmGmGmUpsmC

psmC

206
mApsmCpsfCmGmUmGfUfGfC
262
mGpsfApsmAmGmCmGmAmAmGm

mAmCfUmUmCmGmCfUmUmC

UmGmCmAfCmAmCmGmGmU

207
mApsmCpsfUmUmCmGfCfUfU
263
mUpsfGpsmCmAmGmAmGmGmUm

mCmAfCmCmUmCmUfGmCmA

GmAmAmGfCmGmAmAmGmUpsmG

psmC

208
mApsmGpsfUmGmUmUfUfGfC
264
mGpsfGpsmUmUmGmCmGmUmCm

mUmGfAmCmGmCmAfAmCmC

AmGmCmAfAmAmCmAmCmUpsmU

psmG

209
mCpsmApsfGmGmCmGfGfGfG
265
mApsfCpsmAmAmGmAmAmAmAm

mUmUfUmUmUmCmUfUmGmU

AmCmCmCfCmGmCmCmUmGpsmU

psmA

210
mCpsmApsfGmGmCmGfGfGfG
266
mApsfCpsmAmAmGmAmAmAmAm

mUmUfUmUmUmCmUfUmGmU

AmAmCmCmCfCmGmCmCmUmG

211
mCpsmApsfGmUmUmUfAfCfU
267
mApsfApsmAmUmGmGmCmAmCm

mAmGfUmGmCmCmAfUmUmU

UmAmGmUfAmAmAmCmUmGpsmA

psmG

212
mCpsmApsfGmUmUmUfAfCfU
268
mApsfApsmAmUmGmGmCmAmCm

mAmGfUmGmCmCmAfUmUmU

UmAmGmUfAmAmAmCmUmG

213
mCpsmApsfUmCmCmUfGfCfU
269
mGpsfApsmGmGmCmAmUmAmGm

mGmCfUmAmUmGmCfCmUmC

CmAmGmCfAmGmGmAmUmGpsmA

psmA

214
mCpsmApsmUmCmCmUfGmCf
270
mApsfUpsmGmAmGfGmCmAmUm

UfGfCmUmAmUmGmCmCmUmCm

AmGmCmAfGmCfAmGmGmAmUmG

AmU

psmApsmA

215
mCpsmApsfUmCmCmUfGfCfU
271
mGpsfApsmGmGmCmAmUmAmGm

mGmCfUmAmUmGmCfCmUmC

CmAmGmCfAmGmGmAmUmG

216
mCpsmCpsfGmUmGmUfGfCfA
272
mUpsfGpsmAmAmGmCmGmAmAm

mCmUfUmCmGmCmUfUmCmA

GmUmGmCfAmCmAmCmGmGpsmU

psmC

217
mCpsmCpsfGmUmGmUfGfCfA
273
mUpsfGpsmAmAmGmCmGmAmAm

mCmUfUmCmGmCmUfUmCmA

GmUmGmCfAmCmAmCmGmG

218
mCpsmCpsmUmGmCmUfGmCf
274
mApsfApsmGmAmUfGmAmGmGm

UfAfUmGmCmCmUmCmAmUmCm

CmAmUmAfGmCfAmGmCmAmGmG

UmU

psmApsmU

219
mCpsmUpsfCmAmGmUfUfUfA
275
mApsfUpsmGmGmCmAmCmUmAm

mCmUfAmGmUmGmCfCmAmU

GmUmAmAfAmCmUmGmAmGpsmC

psmC

220
mCpsmUpsmCmAmGmUfUmU
275
mApsfUpsmGmGmCmAmCmUmAm

mAmCmUmAmGmUmGmCmCmAmU

GmUmAmAfAmCmUmGmAmGpsmC

psmC

221
mCpsmUpsfCmAmGmUfUfUmA
275
mApsfUpsmGmGmCmAmCmUmAm

mCmUmAmGmUmGmCfCmAmU

GmUmAmAfAmCmUmGmAmGpsmC

psmC

222
mCpsmUpsfCmAmGmUfUfUfA
276
mApsfUpsmGmGmCmAmCmUmAm

mCmUfAmGmUmGmCfCmAmU

GmUmAmAfAmCmUmGmAmG

223
mCpsmUpsfCmAmGmUfUfUmA
276
mApsfUpsmGmGmCmAmCmUmAm

mCmUmAmGmUmGmCfCmAmU

GmUmAmAfAmCmUmGmAmG

224
mCpsmUpsfGmCmUmAfUfGfC
277
mApsfGpsmAmAmGmAmUmGmAm

mCmUfCmAmUmCmUfUmCmU

GmGmCmAfUmAmGmCmAmGpsmC

psmA

225
mCpsmUpsfGmCmUmAfUfGmC
277
mApsfGpsmAmAmGmAmUmGmAm

mCmUmCmAmUmCmUfUmCmU

GmGmCmAfUmAmGmCmAmGpsmC

psmA

226
mCpsmUpsfGmCmUmAfUfGfC
278
mApsfGpsmAmAmGmAmUmGmAm

mCmUfCmAmUmCmUfUmCmU

GmGmCmAfUmAmGmCmAmG

227
mCpsmUpsfGmCmUmAfUfGmC
278
mApsfGpsmAmAmGmAmUmGmAm

mCmUmCmAmUmCmUfUmCmU

GmGmCmAfUmAmGmCmAmG

228
mCpsmUpsfGmCmUmGfCfUfA
279
mApsfGpsmAmUmGmAmGmGmCm

mUmGfCmCmUmCmAfUmCmU

AmUmAmGfCmAmGmCmAmGpsmG

psmA

229
mCpsmUpsfGmCmUmGfCfUfA
280
mApsfGpsmAmUmGmAmGmGmCm

mUmGfCmCmUmCmAfUmCmU

AmUmAmGfCmAmGmCmAmG

230
mCpsmUpsfGmCmUmGfCfUmA
280
mApsfGpsmAmUmGmAmGmGmCm

mUmGmCmCmUmCmAfUmCmU

AmUmAmGfCmAmGmCmAmG

231
mCpsmUpsmUmCmGmCfUmUf
281
mApsfCpsmGmUmGfCmAmGmAm

CfAfCmCmUmCmUmGmCmAmCm

GmGmUmGfAmAfGmCmGmAmAmG

GmU

psmUpsmG

232
mGpsmCpsmAmCmUmUfCmGf
282
mUpsfGpsmCmAmGfAmGmGmUm

CfUfUmCmAmCmCmUmCmUmGm

GmAmAmGfCmGfAmAmGmUmGmC

CmA

psmApsmC

233
mGpsmCpsfCmGmAmUfCfCfA
283
mUpsfUpsmCmCmGmCmAmGmUm

mUmAfCmUmGmCmGfGmAmA

AmUmGmGfAmUmCmGmGmCpsmA

psmG

234
mGpsmCpsfCmGmGmGfUfUfU
284
mUpsfUpsmCmCmGmCmAmGmUm

mUmUfCmUmUmGmUfUmGmA

AmUmGmGfAmUmCmGmGmC

235
mGpsmCpsfGmGmGmGfUfUfU
285
mUpsfCpsmAmAmCmAmAmGmAm

mUmUfCmUmUmGmUfUmGmA

AmAmAmAfCmCmCmCmGmCpsmC

psmU

236
mGpsmCpsfGmGmGmGfUfUmU
285
mUpsfCpsmAmAmCmAmAmGmAm

mUmUmCmUmUmGmUfUmGmA

AmAmAmAfCmCmCmCmGmCpsmC

psmU

237
mGpsmCpsfGmGmGmGfUfUfU
286
mUpsfCpsmAmAmCmAmAmGmAm

mUmUfCmUmUmGmUfUmGmA

AmAmAmAfCmCmCmCmGmC

238
mGpsmCpsfGmGmGmGfUfUmU
286
mUpsfCmAmAmCmAmAmGmAmA

mUmUmCmUmUmGmUfUmGmA

mAmAmAfCmCmCmCmGmC

239
mGpsmCpsmUmGmCmUfAmUf
287
mApsfApsmGmAmAfGmAmUmGm

GfCfCmUmCmAmUmCmUmUmCm

AmGmGmCfAmUfAmGmCmAmGmC

UmU

psmApsmG

240
mGpsmGpsmAmUmGmUfGmUf
288
mUpsfApsmAmAmAfCmGmCmCm

CfUfGmCmGmGmCmGmUmUmUm

GmCmAmGfAmCfAmCmAmUmCmC

UmA

psmApsmG

241
mGpsmGpsfCmCmAmAfAfAfU
289
mGpsfGpsmGmAmCmUmGmCmGm

mUmCfGmCmAmGmUfCmCmC

AmAmUmUfUmUmGmGmCmCpsmA

psmA

242
mGpsmGpsfCmGmCmAfCfCfU
290
mGpsfCpsmGmUmAmAmAmGmAm

mCmUfCmUmUmUmAfCmGmC

GmAmGmGfUmGmCmGmCmCpsmC

psmC

243
mGpsmUpsfAmUmGmUfUfGfC
291
mGpsfGpsmAmCmAmAmAmCmGm

mCmCfGmUmUmUmGfUmCmC

GmGmCmAfAmCmAmUmAmCpsmC

psmU

244
mGpsmUpsfGmGmUmGfGfAfC
292
mApsfUpsmUmGmAmGmAmGmAm

mUmUfCmUmCmUmCfAmAmU

AmGmUmCfCmAmCmCmAmCpsmG

psmA

245
mGpsmUpsfGmUmGmCfAfCfU
293
mGpsfGpsmUmGmAmAmGmCmGm

mUmCfGmCmUmUmCfAmCmC

AmAmGmUfGmCmAmCmAmCpsmG

psmG

246
mGpsmUpsfUmGmCmCfCfGfU
294
mUpsfApsmGmAmGmGmAmCmAm

mUmUfGmUmCmCmUfCmUmA

AmAmCmGfGmGmCmAmAmCpsmA

psmU

247
mGpsmUpsfUmGmCmCfCfGfU
295
mUpsfApsmGmAmGmGmAmCmAm

mUmUfGmUmCmCmUfCmUmA

AmAmCmGfGmGmCmAmAmC

248
mUpsmCpsfCmAmUmAfCfUfG
296
mApsfGpsmGmAmGmUmUmCmCm

mCmGfGmAmAmCmUfCmCmU

GmCmAmGfUmAmUmGmGmApsmU

psmC

249
mUpsmCpsfCmAmUmAfCfUfG
297
mApsfGpsmGmAmGmUmUmCmCm

mCmGfGmAmAmCmUfCmCmU

GmCmAmGfUmAmUmGmGmA

250
mUpsmCpsmGmUmGmGfUmGf
298
mApsfUpsmUmGmAfGmAmGmAm

GfAfCmUmUmCmUmCmUmCmAm

AmGmUmCfCmAfCmCmAmCmGmA

AmU

psmGpsmU

251
mUpsmGpsfCmAmCmUfUfCfG
299
mApsfGpsmAmGmGmUmGmAmAm

mCmUfUmCmAmCmCfUmCmU

GmCmGmAfAmGmUmGmCmApsmC

psmA

252
mUpsmGpsfCmCmGmAfUfCfC
300
mUpsfCpsmCmGmCmAmGmUmAm

mAmUfAmCmUmGmCfGmGmA

UmGmGmAfUmCmGmGmCmApsmG

psmA

253
mUpsmGpsfCmCmGmAfUfCfC
301
mUpsfCpsmCmGmCmAmGmUmAm

mAmUfAmCmUmGmCfGmGmA

UmGmGmAfUmCmGmGmCmA

254
mUpsmGpsfCmUmAmUfGfCfC
302
mApsfApsmGmAmAmGmAmUmGm

mUmCfAmUmCmUmUfCmUmU

AmGmGmCfAmUmAmGmCmApsmG

psmC

255
mUpsmGpsfUmGmCmAfCfUfU
303
mApsfGpsmGmUmGmAmAmGmCm

mCmGfCmUmUmCmAfCmCmU

GmAmAmGfUmGmCmAmCmApsmC

psmG

256
mUpsmGpsfUmGmCmAfCfUmU
303
mApsfGpsmGmUmGmAmAmGmCm

mCmGmCmUmUmCmAfCmCmU

GmAmAmGfUmGmCmAmCmApsmC

psmG

257
mUpsmGpsfUmGmCmAfCfUfU
304
mApsfGpsmGmUmGmAmAmGmCm

mCmGfCmUmUmCmAfCmCmU

GmAmAmGfUmGmCmAmCmA

258
mUpsmGpsfUmGmCmAfCfUmU
304
mApsfGpsmGmUmGmAmAmGmCm

mCmGmCmUmUmCmAfCmCmU

GmAmAmGfUmGmCmAmCmA

259
mUpsmUpsfGmCmCmCfGfUmU
305
mUpsfUpsmAmGmAmGmGmAmCm

mUmGmUmCmCmUmCfUmAmA

AmAmAmCfGmGmGmCmAmApsmC

psmA

260
mUpsmUpsfGmCmCmCfGfUfU
306
mUpsfUpsmAmGmAmGmGmAmCm

mUmGfUmCmCmUmCfUmAmA

AmAmAmCfGmGmGmCmAmA

mX = 2′-O-methyl nucleotide; fX = 2′-fluoro nucleotide; ps = phosphorothioate linkage

TABLE 4

siNA Sequences

SEQ ID

SEQ

NO.
Sense Sequence (5′-3′)
ID NO.
Antisense Sequence (5′-3′)

307
mApsmCpsfCmGmUmGfUfGfC
363
mGpsfApsmAmGmCmGmAmAmGmU

mAmCfUmUmCmGmCfUmUmC

mGmCmAfCmAmCmGmGmUpsmCps

mC

308
mApsmCpsfCmGmUmGfUfGfC
364
mGpsfApsmAmGmCmGmAmAmGmU

mAmCfUmUmCmGmCfUmUmC

mGmCmAfCmAmCmGmGmUpsTpsT

TT

309
mApsmCpsfUmUmCmGfCfUfU
365
mUpsfGpsmCmAmGmAmGmGmUmG

mCmAfCmCmUmCmUfGmCmA

mAmAmGfCmGmAmAmGmUpsmGps

mC

310
mApsmGpsfUmGmUmUfUfGfC
366
mGpsfGpsmUmUmGmCmGmUmCmA

mUmGfAmCmGmCmAfAmCmC

mGmCmAfAmAmCmAmCmUpsmUps

mG

311
mCpsmApsfGmGmCmGfGfGfG
367
mApsfCpsmAmAmGmAmAmAmAmA

mUmUfUmUmUmCmUfUmGm

mCmCmCfCmGmCmCmUmGpsmUps

U

mA

312
mCpsmApsfGmGmCmGfGfGfG
368
mApsfCpsmAmAmGmAmAmAmAmA

mUmUfUmUmUmCmUfUmGm

mAmCmCmCfCmGmCmCmUmGpsTp

UTT

sT

313
mCpsmApsfGmUmUmUfAfCfU
369
mApsfApsmAmUmGmGmCmAmCmU

mAmGfUmGmCmCmAfUmUm

mAmGmUfAmAmAmCmUmGpsmAps

U

mG

314
mCpsmApsfGmUmUmUfAfCfU
370
mApsfApsmAmUmGmGmCmAmCmU

mAmGfUmGmCmCmAfUmUm

mAmGmUfAmAmAmCmUmGpsTpsT

UTT

315
mCpsmApsfUmCmCmUfGfCfU
371
mGpsfApsmGmGmCmAmUmAmGmC

mGmCfUmAmUmGmCfCmUmC

mAmGmCfAmGmGmAmUmGpsmAps

mA

316
mCpsmApsmUmCmCmUfGmCf
372
mApsfUpsmGmAmGfGmCmAmUmA

UfGfCmUmAmUmGmCmCmUm

mGmCmAfGmCfAmGmGmAmUmGps

CmAmU

mApsmA

317
mCpsmApsfUmCmCmUfGfCfU
373
mGpsfApsmGmGmCmAmUmAmGmC

mGmCfUmAmUmGmCfCmUmC

mAmGmCfAmGmGmAmUmGpsTpsT

TT

318
mCpsmCpsfGmUmGmUfGfCfA
374
mUpsfGpsmAmAmGmCmGmAmAmG

mCmUfUmCmGmCmUfUmCmA

mUmGmCfAmCmAmCmGmGpsmUps

mC

319
mCpsmCpsfGmUmGmUfGfCfA
375
mUpsfGpsmAmAmGmCmGmAmAmG

mCmUfUmCmGmCmUfUmCmA

mUmGmCfAmCmAmCmGmGpsTpsT

TT

320
mCpsmCpsmUmGmCmUfGmCf
376
mApsfApsmGmAmUfGmAmGmGmC

UfAfUmGmCmCmUmCmAmUm

mAmUmAfGmCfAmGmCmAmGmGps

CmUmU

mApsmU

321
mCpsmUpsfCmAmGmUfUfUfA
377
mApsfUpsmGmGmCmAmCmUmAmG

mCmUfAmGmUmGmCfCmAmU

mUmAmAfAmCmUmGmAmGpsmCps

mC

322
mCpsmUpsmCmAmGmUfUmU
377
mApsfUpsmGmGmCmAmCmUmAmG

mAmCmUmAmGmUmGmCmC

mUmAmAfAmCmUmGmAmGpsmCps

mAmU

mC

323
mCpsmUpsfCmAmGmUfUfUmA
377
mApsfUpsmGmGmCmAmCmUmAmG

mCmUmAmGmUmGmCfCmAm

mUmAmAfAmCmUmGmAmGpsmCps

U

mC

324
mCpsmUpsfCmAmGmUfUfUfA
378
mApsfUpsmGmGmCmAmCmUmAmG

mCmUfAmGmUmGmCfCmAmU

mUmAmAfAmCmUmGmAmGpsTpsT

TT

325
mCpsmUpsfCmAmGmUfUfUmA
378
mApsfUpsmGmGmCmAmCmUmAmG

mCmUmAmGmUmGmCfCmAm

mUmAmAfAmCmUmGmAmGpsTpsT

UTT

326
mCpsmUpsfGmCmUmAfUfGfC
379
mApsfGpsmAmAmGmAmUmGmAmG

mCmUfCmAmUmCmUfUmCmU

mGmCmAfUmAmGmCmAmGpsmCps

mA

327
mCpsmUpsfGmCmUmAfUfGmC
379
mApsfGpsmAmAmGmAmUmGmAmG

mCmUmCmAmUmCmUfUmCm

mGmCmAfUmAmGmCmAmGpsmCps

U

mA

328
mCpsmUpsfGmCmUmAfUfGfC
380
mApsfGpsmAmAmGmAmUmGmAmG

mCmUfCmAmUmCmUfUmCmU

mGmCmAfUmAmGmCmAmGpsTpsT

TT

329
mCpsmUpsfGmCmUmAfUfGmC
380
mApsfGpsmAmAmGmAmUmGmAmG

mCmUmCmAmUmCmUfUmCm

mGmCmAfUmAmGmCmAmGpsTpsT

UTT

330
mCpsmUpsfGmCmUmGfCfUfA
381
mApsfGpsmAmUmGmAmGmGmCmA

mUmGfCmCmUmCmAfUmCmU

mUmAmGfCmAmGmCmAmGpsmGps

mA

331
mCpsmUpsfGmCmUmGfCfUfA
382
mApsfGpsmAmUmGmAmGmGmCmA

mUmGfCmCmUmCmAfUmCmU

mUmAmGfCmAmGmCmAmGpsTpsT

TT

332
mCpsmUpsfGmCmUmGfCfUmA
383
mApsfGpsmAmUmGmAmGmGmCmA

mUmGmCmCmUmCmAfUmCm

mUmAmGfCmAmGmCmAmGpsTpsT

UTT

333
mCpsmUpsmUmCmGmCfUmUf
384
mApsfCpsmGmUmGfCmAmGmAmG

CfAfCmCmUmCmUmGmCmAm

mGmUmGfAmAfGmCmGmAmAmGp

CmGmU

smUpsmG

334
mGpsmCpsmAmCmUmUfCmGf
385
mUpsfGpsmCmAmGfAmGmGmUmG

CfUfUmCmAmCmCmUmCmUm

mAmAmGfCmGfAmAmGmUmGmCps

GmCmA

mApsmC

335
mGpsmCpsfCmGmAmUfCfCfA
386
mUpsfUpsmCmCmGmCmAmGmUmA

mUmAfCmUmGmCmGfGmAm

mUmGmGfAmUmCmGmGmCpsmAps

A

mG

336
mGpsmCpsfCmGmGmGfUfUfU
387
mUpsfUpsmCmCmGmCmAmGmUmA

mUmUfC mUmUmGmUfUmGm

mUmGmGfAmUmCmGmGmCpsTpsT

ATT

337
mGpsmCpsfGmGmGmGfUfUfU
388
mUpsfCpsmAmAmCmAmAmGmAmA

mUmUfC mUmUmGmUfUmGm

mAmAmAfCmCmCmCmGmCpsmCps

A

mU

338
mGpsmCpsfGmGmGmGfUfUmU
388
mUpsfCpsmAmAmCmAmAmGmAmA

mUmUmCmUmUmGmUfUmGm

mAmAmAfCmCmCmCmGmCpsmCps

A

mU

339
mGpsmCpsfGmGmGmGfUfUfU
389
mUpsfCpsmAmAmCmAmAmGmAmA

mUmUfCmUmUmGmUfUmGm

mAmAmAfCmCmCmCmGmCpsTpsT

ATT

340
mGpsmCpsfGmGmGmGfUfUmU
389
mUpsfCmAmAmCmAmAmGmAmAm

mUmUmCmUmUmGmUfUmGm

AmAmAfCmCmCmCmGmCpsTpsT

ATT

341
mGpsmCpsmUmGmCmUfAmUf
390
mApsfApsmGmAmAfGmAmUmGmA

GfCfCmUmCmAmUmCmUmUm

mGmGmCfAmUfAmGmCmAmGmCps

CmUmU

mApsmG

342
mGpsmGpsmAmUmGmUfGmUf
391
mUpsfApsmAmAmAfCmGmCmCmG

CfUfGmCmGmGmCmGmUmUm

mCmAmGfAmCfAmCmAmUmCmCps

UmUmA

mApsmG

343
mGpsmGpsfCmCmAmAfAfAfU
392
mGpsfGpsmGmAmCmUmGmCmGmA

mUmCfGmCmAmGmUfCmCmC

mAmUmUfUmUmGmGmCmCpsmAps

mA

344
mGpsmGpsfCmGmCmAfCfCfU
393
mGpsfCpsmGmUmAmAmAmGmAmG

mCmUfCmUmUmUmAfCmGmC

mAmGmGfUmGmCmGmCmCpsmCps

mC

345
mGpsmUpsfAmUmGmUfUfGfC
394
mGpsfGpsmAmCmAmAmAmCmGmG

mCmCfGmUmUmUmGfUmCmC

mGmCmAfAmCmAmUmAmCpsmCps

mU

346
mGpsmUpsfGmGmUmGfGfAfC
395
mApsfUpsmUmGmAmGmAmGmAmA

mUmUfCmUmCmUmCfAmAmU

mGmUmCfCmAmCmCmAmCpsmGps

mA

347
mGpsmUpsfGmUmGmCfAfCfU
396
mGpsfGpsmUmGmAmAmGmCmGmA

mUmCfGmCmUmUmCfAmCmC

mAmGmUfGmCmAmCmAmCpsmGps

mG

348
mGpsmUpsfUmGmCmCfCfGfU
397
mUpsfApsmGmAmGmGmAmCmAmA

mUmUfGmUmCmCmUfCmUmA

mAmCmGfGmGmCmAmAmCpsmAps

mU

349
mGpsmUpsfUmGmCmCfCfGfU
398
mUpsfApsmGmAmGmGmAmCmAmA

mUmUfGmUmCmCmUfCmUmA

mAmCmGfGmGmCmAmAmCpsTpsT

TT

350
mUpsmCpsfCmAmUmAfCfUfG
399
mApsfGpsmGmAmGmUmUmCmCmG

mCmGfGmAmAmCmUfCmCmU

mCmAmGfUmAmUmGmGmApsmUps

mC

351
mUpsmCpsfCmAmUmAfCfUfG
400
mApsfGpsmGmAmGmUmUmCmCmG

mCmGfGmAmAmCmUfCmCmU

mCmAmGfUmAmUmGmGmApsTpsT

TT

352
mUpsmCpsmGmUmGmGfUmGf
401
mApsfUpsmUmGmAfGmAmGmAmA

GfAfCmUmUmCmUmCmUmCm

mGmUmCfCmAfCmCmAmCmGmAps

AmAmU

mGpsmU

353
mUpsmGpsfCmAmCmUfUfCfG
402
mApsfGpsmAmGmGmUmGmAmAmG

mCmUfUmCmAmCmCfUmCmU

mCmGmAfAmGmUmGmCmApsmCps

mA

354
mUpsmGpsfCmCmGmAfUfCfC
403
mUpsfCpsmCmGmCmAmGmUmAmU

mAmUfAmCmUmGmCfGmGm

mGmGmAfUmCmGmGmCmApsmGps

A

mA

355
mUpsmGpsfCmCmGmAfUfCfC
404
mUpsfCpsmCmGmCmAmGmUmAmU

mAmUfAmCmUmGmCfGmGm

mGmGmAfUmCmGmGmCmApsTpsT

ATT

356
mUpsmGpsfCmUmAmUfGfCfC
405
mApsfApsmGmAmAmGmAmUmGmA

mUmCfAmUmCmUmUfCmUmU

mGmGmCfAmUmAmGmCmApsmGps

mC

357
mUpsmGpsfUmGmCmAfCfUfU
406
mApsfGpsmGmUmGmAmAmGmCmG

mCmGfCmUmUmCmAfCmCmU

mAmAmGfUmGmCmAmCmApsmCps

mG

358
mUpsmGpsfUmGmCmAfCfUmU
406
mApsfGpsmGmUmGmAmAmGmCmG

mCmGmCmUmUmCmAfCmCm

mAmAmGfUmGmCmAmCmApsmCps

U

mG

359
mUpsmGpsfUmGmCmAfCfUfU
407
mApsfGpsmGmUmGmAmAmGmCmG

mCmGfCmUmUmCmAfCmCmU

mAmAmGfUmGmCmAmCmApsTpsT

TT

360
mUpsmGpsfUmGmCmAfCfUmU
407
mApsfGpsmGmUmGmAmAmGmCmG

mCmGmCmUmUmCmAfCmCm

mAmAmGfUmGmCmAmCmApsTpsT

UTT

361
mUpsmUpsfGmCmCmCfGfUmU
408
mUpsfUpsmAmGmAmGmGmAmCmA

mUmGmUmCmCmUmCfUmAm

mAmAmCfGmGmGmCmAmApsmCps

A

mA

362
mUpsmUpsfGmCmCmCfGfUfU
409
mUpsfUpsmAmGmAmGmGmAmCmA

mUmGfUmCmCmUmCfUmAmA

mAmAmCfGmGmGmCmAmApsTpsT

TT

415
5dcd3Cps5dcd3CpsfG5dcd3UmG
445
5dcd3UpsfGpsmAmAmG5dcd3CmGm

5dcd3UfG5dfCfA5dcd3C5dcd3U

AmAmG5dcd3UmG5dcd3CfA5dcd3C

5dfU5dcd3CmG5dcd3C5dcd3U5d

mA5dcd3CmGmGps5dcd3Ups5dcd3U

fU5dcd3CmA

415
5dcd3Cps5dcd3CpsfG5dcd3UmG
446
5dcd3UpsfGpsmAmAmGmCmGmAm

5dcd3UfG5dfCfA5dcd3C5dcd3U

AmGmUmGmCfAmCmAmCmGmGps

5dfU5dcd3CmG5dcd3C5dcd3U5d

5dcd3Ups5dcd3U

fU5dcd3CmA

415
5dcd3Cps5dcd3CpsfG5dcd3UmG
447
mUpsfGpsmAmAmGmCmGmAmAmG

5dcd3UfG5dfCfA5dcd3C5dcd3U

mUmGmCfAmCmAmCmGmGpsmUps

5dfU5dcd3CmG5dcd3C5dcd3U5d

mU

fU5dcd3CmA

416
fCpsmCpsfGmUfGmUfGfCfAmC
448
mUpsfGpsmAfAmGfCmGfAmAfGmU

fUmUfCmGfCmUfUmCfA

mGmCfAmCfAmCfGmGpsmUpsmC

416
fCpsmCpsfGmUfGmUfGfCfAmC
449
vmUpsfGpsmAfAmGfCmGfAmAfGm

fUmUfCmGfCmUfUmCfA

UmGmCfAmCfAmCfGmGpsmUpsmC

416
fCpsmCpsfGmUfGmUfGmCfAm
450
mUpsfGpsmAfAmGfCmGfAmAfGmUf

CfUmUfCmGfCmUfUmCfA

GmCfAmCfAmCfGmGpsmUpsmC

416
fCpsmCpsfGmUfGmUfGmCfAm
451
vmUpsfGpsmAfAmGfCmGfAmAfGm

CfUmUfCmGfCmUfUmCfA

UfGmCfAmCfAmCfGmGpsmUpsmC

417
fCpsmUpsfGmCfUmAfUmGfCm
452
mApsfGpsmAfAmGfAmUfGmAfGmGf

CfUmCfAmUfCmUfUmCfU

CmAfUmAfGmCfAmGpsmUpsmU

417
fCpsmUpsfGmCfUmAfUmGfCm
452
mApsfGpsmAfAmGfAmUfGmAfGmGf

CfUmCfAmUfCmUfUmCfU

CmAfUmAfGmCfAmGpsmUpsmU

417
fCpsmUpsfGmCfUmAfUmGfCm
452
mApsfGpsmAfAmGfAmUfGmAfGmGf

CfUmCfAmUfCmUfUmCfU

CmAfUmAfGmCfAmGpsmUpsmU

417
fCpsmUpsfGmCfUmAfUmGfCm
452
mApsfGpsmAfAmGfAmUfGmAfGmGf

CfUmCfAmUfCmUfUmCfU

CmAfUmAfGmCfAmGpsmUpsmU

418
fGpsmUpsfGmGfUmGfGfAfCm
453
mApsfUpsmUfGmAfGmAfGmAfAmG

UfUmCfUmCfUmCfAmAfU

mUmCfCmAfCmCfAmCpsmGpsmA

418
fGpsmUpsfGmGfUmGfGfAfCm
454
vmApsfUpsmUfGmAfGmAfGmAfAm

UfUmCfUmCfUmCfAmAfU

GmUmCfCmAfCmCfAmCpsmGpsmA

419
fGpsmUpsfGmGfUmGfGmAfCm
455
mApsfUpsmUfGmAfGmAfGmAfAmGf

UfUmCfUmCfUmCfAmAfU

UmCfCmAfCmCfAmCpsmGpsmA

419
fGpsmUpsfGmGfUmGfGmAfCm
456
vmApsfUpsmUfGmAfGmAfGmAfAm

UfUmCfUmCfUmCfAmAfU

GfUmCfCmAfCmCfAmCpsmGpsmA

420
mCpsmCpsfGmUfGmUfGfCfAm
457
mUpsfGpsmAmAmGfCmGmAmAmG

CmUmUmCmGmCmUmUmCm

mUmGmCfAmCfAmCmGmGpsmUps

A

mC

421
mCpsmCpsfGmUmGmUfGfCfA
458
mUpsfGpsmAmAmGmCmGmAmAmG

mAmUfUmCmGmCmUfUmCmA

mUmGmCfAmCmAmCmGmGpsmUps

mC

422
mCpsmCpsfGmUmGmUfGfCfA
459
mUpsfGpsmAmAmGmCmGmAmAmG

mCmUfUmCmGmCmUfUmCmA

mUmGmCfAmCmAmCmGmGpsmU3s

mU

423
mCpsmCpsfGmUmGmUfGfCfA
460
mUpsfGpsmAmAmGmCmGmAmAmG

mCmUfUmCmGmCmUfUmCmA

mUmGmCfAmCmAmCmGmG5smU5s

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mApsfGpsmGmUmGmAmAmGmCmG

mCmGmCmUmUmCmAfCmCm

mAmAmGfUmGmCmAmCmApsmCps

U

mG

439
mUpsmCpsmGmUmGmGfUmGf
531
mApsfUpsmUmGmAfGmAmGmAmA

GfAfCmUmUmCmUmCmUmCm

mGmUmCfCmAfCmCmAmCmGmAps

AmAmU

mGpsmU

423
mCpsmCpsfGmUmGmUfGfCfA
532
mUpsfGpsmAmAmGmCmGmAmAmG

mCmUfUmCmGmCmUfUmCmA

mUmGmCfAmCmAmCmGmGpsTpsT

441
mUpsmGpsfUmGmCmAfCfUfU
530
mApsfGpsmGmUmGmAmAmGmCmG

mCmGfCmUmUmCmAfCmCmU

mAmAmGfUmGmCmAmCmApsmCps

mG

442
mUpsmGpsfUmGmCmAfCfUmU
533
mApsfGpsmGmUmGmAmAmGmCmG

mCmGmCmUmUmCmAfCmCm

mAmAmGfUmGmCmAmCmApsTpsT

U

424
mCpsmCpsmGmUfGmUfGfCfA
536
d2vd3UpsfGpsmAmAfGmCmGfAmAm

mCmUmUmCmGmCmUmUmC

GmUmGmCfAmCmAfCmGmGpsmUp

mA

smC

438
mGpsmUpsmGmGfUmGfGfAfC
537
mApsf4PpsmUmGmAfGmAmGmAmA

mUmUmCmUmCmUmCmAmA

mGmUmCfCmAfCmCmAmCpsmGpsm

mU

A

438
mGpsmUpsmGmGfUmGfGfAfC
538
mApsfUpsmUmGmAfGmAmGmAmA

mUmUmCmUmCmUmCmAmA

mGmUmCf2PmAfCmCmAmCpsmGps

mU

mA

438
mGpsmUpsmGmGfUmGfGfAfC
599
mApsfUpsmUmGmAfGmAmGmAmA

mUmUmCmUmCmUmCmAmA

mGmUmCfCmAfXmCmAmCpsmGps

mU

mA

mX = 2′-O-methyl nucleotide;

fX = 2′-fluoro nucleotide;

5dcd3X = nucleotide of Formula 17;

5dfX = nucleotide of Formula 16;

vX = 5′ vinyl phosphonate nucleotide;

d2vX = deuterated 5′ vinyl phosphonate nucleotide;

vmX = 5′ vinyl phosphonate, 2′-O-methylnucleotide;

vmB =

embedded image

vmN =

VmU =

cmU =

mesnmU =

mesnomU =

d2vmU =

d2vmA =

d2vd3U =

f4P =

f2P =

fX =

ps = phosphorothioate linkage

TABLE 5

SEQ ID

NO:
Description
Sequence⁺

410
Hepatitis B
aattccacaacctttcaccaaactctgcaagatcccagagtgagaggcctgtatttccctgctggtgg

virus
ctccagttcaggagcagtaaaccctgttccgactactgcctctcccttatcgtcaatcttctcgaggatt

(Genbank
ggggaccctgcgctgaacatggagaacatcacatcaggattcctaggaccccttctcgtgttacagg

Accession
cggggtttttcttgttgacaagaatcctcacaataccgcagagtctagactcgtggtggacttctctca

No.
attttctagggggaactaccgtgtgtcttggccaaaattcgcagtccccaacctccaatcactcacca

U95551.1)
acctcctgtcctccaacttgtcctggttatcgctggatgtgtctgcggcgttttatcatcttcctcttcatc

ctgctgctatgcctcatcttcttgttggttcttctggactatcaaggtatgttgcccgtttgtcctctaattc

caggatcctcaaccaccagcacgggaccatgccgaacctgcatgactactgctcaaggaacctcta

tgtatccctcctgttgctgtaccaaaccttcggacggaaattgcacctgtattcccatcccatcatcctg

ggctttcggaaaattcctatgggagtgggcctcagcccgtttctcctggctcagtttactagtgccattt

gttcagtggttcgtagggctttcccccactgtttggctttcagttatatggatgatgtggtattgggggc

caagtctgtacagcatcttgagtccctttttaccgctgttaccaattttcttttgtctttgggtatacatttaa

accctaacaaaacaaagagatggggttactctctgaattttatgggttatgtcattggaagttatgggtc

cttgccacaagaacacatcatacaaaaaatcaaagaatgttttagaaaacttcctattaacaggcctat

tgattggaaagtatgtcaacgaattgtgggtcttttgggttttgctgccccatttacacaatgtggttatc

ctgcgttaatgcccttgtatgcatgtattcaatctaagcaggctttcactttctcgccaacttacaaggcc

tttctgtgtaaacaatacctgaacctttaccccgttgcccggcaacggccaggtctgtgccaagtgttt

gctgacgcaacccccactggctggggcttggtcatgggccatcagcgcgtgcgtggaaccttttcg

gctcctctgccgatccatactgcggaactcctagccgcttgttttgctcgcagcaggtctggagcaaa

cattatcgggactgataactctgttgtcctctcccgcaaatatacatcgtatccatggctgctaggctgt

gctgccaactggatcctgcgcgggacgtcctttgtttacgtcccgtcggcgctgaatcctgcggacg

accatcteggggtcgcttgggactctctcgtccccttctccgtctgccgttccgaccgaccacgggg

cgcacctctattacgcggactccccgtctgtgccttctcatctgccggaccgtgtgcacttcgcttca

cctctgcacgtcgcatggagaccaccgtgaacgcccaccgaatgttgcccaaggtcttacataaga

ggactatggactctctgcaatgtcaacgaccgaccttgaggcatacttcaaagactgtttgtttaaag

actgggaggagttgggggaggagattagattaaaggtetttgtactaggaggctgtaggcataaatt

ggtctgcgcaccagcaccatgcaactttttcacctctgcctaatcatctcttgttcatgtcctactgttca

agcctccaagctgtgccttgggtggctttggggcatggacatcgacccttataaagaatttggagcta

ctgtggagttactctcgttfttgccttctgacttctttccttcagtacgagatcttctagataccgcctcag

ctctgtatcgggaagccttagagtctcctgagcattgttcacctcaccatactgcactcaggcaagca

attctttgctggggggaactaatgactctagctacctgggtgggtgttaatttggaagatccagcatct

agagacctagtagtcagttatgtcaacactaatatgggcctaaagttcaggcaactcttgtggtttcac

atttcttgtctcacttttggaagagaaaccgttatagagtatttggtgtctttcggagtgtggattcgcact

cctccagatatagaccaccaaatgcccctatcctatcaacacttccggaaactactgttgttagacga

cgaggcaggtcccctagaagaagaactccctcgcctcgcagacgaaggtctcaatcgccgcgtcg

cagaagatctcaatctcgggaacctcaatgttagtattccttggactcataaggtggggaactttactg

gtctttattcttctactgtacctgtctttaatcctcattggaaaacaccatcttttcctaatatacatttacacc

aagacattatcaaaaaatgtgaacagtttgtaggcccacttacagttaatgagaaaagaagattgcaa

ttgattatgcctgctaggttttatccaaaggttaccaaatatttaccattggataagggtattaaaccttat

tatccagaacatctagttaatcattacttccaaactagacactatttacacactctatggaaggcgggta

tattatataagagagaaacaacacatagcgcctcattttgtgggtcaccatattcttgggaacaagatc

tacagcatggggcagaatctttccaccagcaatcctctgggattctttcccgaccaccagttggatcc

agccttcagagcaaacacagcaaatccagattgggacttcaatcccaacaaggacacctggccag

acgccaacaaggtaggagctggagcattcgggctgggtttcaccccaccgcacggaggccttttg

gggtggagccctcaggctcagggcatactacaaactttgccagcaaatccgcctcctgcctccacc

aatcgccagacaggaaggcagcctaccccgctgtctccacctttgagaaacactcatcctcaggcc

atgcagtgg

411
MCJ mRNA
agtcactgccgcggcgccttgagtctccgggccgccttgccatggctgcccgtggtgtcatcgctc

(GenBank
cagttggcgagagtttgcgctacgctgagtacttgcagccctcggccaaacggccagacgccgac

Accession
gtcgaccagcagagactggtaagaagtttgatagctgtaggactgggtgttgcagctcttgcatttgc

No.
aggtcgctacgcatttcggatctggaaacctctagaacaagttatcacagaaactgcaaagaagattt

NM_013238.3)
caactcctagcttttcatcctactataaaggaggatttgaacagaaaatgagtaggcgagaagctggt

cttattttaggtgtaagcccatctgctggcaaggctaagattagaacagctcataggagagtcatgatt

ttgaatcacccagataaaggtggatctccttacgtagcagccaaaataaatgaagcaaaagacttgct

agaaacaaccaccaaacattgatgcttaaggaccacactgaaggaaaaaaaaagaggggacttcg

aaaaaaaaaaaagccctgcaaaatattctaaaacatggtcttcttaattttctatatggattgaccacag

tcttatcttccaccattaagctgtataacaataaaatgttaatagtcttgctttttattatcttttaaagatctc

cttaaattctataactgatcttttttcttattttgtttgtgacattcatacatttttaagatttttgttatgttctgaa

ttcccccctacacacacacacacacacacacacacacacacgtgcaaaaaatatgatcaagaatgc

aattgggatttgtgagcaatgagtagacctcttattgtttatatttgtaccctcattgtcaatttttttttagg

gaatttgggactctgcctatataaggtgttttaaatgtcttgagaacaagcactggctgatacctcttgg

agatatgatctgaaatgtaatggaatttattaaatggtgtttagtaaagtaggggttaaggacttgttaaa

gaaccccactatctctgagaccctatagccaaagcatgaggacttggagagctactaaaatgattca

ggtttacaaaatgagccctgtgaggaaaggttgagagaagtctgaggagtttgtatttaattatagtctt

ccagtactgtatattcattcattactcattctacaaatatttattgaccccttttgatgtgcaaggcactatc

gtgcgtcccctgagagttgcaagtatgaagcagtcatggatcatgaaccaaaggaacttatatgtag

aggaaggataaatcacaaatagtgaatactgttagatacagatgatatattttaaaagttcaaaggaag

aaaagaatgtgttaaacactgcatgagaggaggaataagtggcatagagctaggctttagaaaaga

aaaatattccgataccatatgattggtgaggtaagtgttattctgagatgagaattagcagaaatagat

atatcaatcggagtgattagagtgcagggtttctggaaagcaaggtttggacagagtggtcatcaaa

ggccagccctgtgacttacactgcattaaattaatttcttagaacatagtccctgatcattatcactttact

attccaaaggtgagagaacagattcagatagagtgccagcattgtttcccagtattcctttacaaatctt

gggttcattccaggtaaactgaactactgcattgtttctatcttaaaatactttttagatatcctagatgcat

cttcaacttctaacattctgtagtttaggagttctcaaccttggcattattgacatgttaggccaaataatt

ttttttgtgggaggtctcttgtgcgttttagatgattagcaataatccctgacctgttatctactaaagact

agtcgtttctcatcagttgtgacaacaaaaatggttccagatattgccaaatgccctttagaggacagt

aatcgcccccagttgagaaccatttcagtaaaactttaattactattttttcttttggtttataaaataatgat

cctgaattaaattgatggaaccttgaagtcgataaaatatatttcttgctttaaagtccccatacgtgtcct

actaattttctcatgctttagtgttttcacttttctcctgttatccttgtacctaagaatgccatcccaatccc

cagatgtccacctgcccaaagtctaggcatagctgaaggccaagctaaaatgtatccctctttttctgg

tacatgcagcaaaagtaatatgaattatcagctttctgagagcaggcattgtatctgtcttgtttggtgtt

acattggcacccaataaatatttgttgagtgaatgaataaattcccatagcactttattcttcacatggta

cataactataggggctatagcttggtaccttgtgaagcaactcttggtgtaacataccttatttctcatac

taaaatgcaagaacctttagagcaaggatcttgccattcatctttgtaacctctttactctggagcacttg

catttagcaggcatcataaagttttacgtaccaagaaaatgttgctgttttctgaatactatgcatcaaaa

aatgttaccactaatttttaaagctctgctaaggaatattggggcaccctcagatgcaccttttaattgat

gtcatattttcctaatccatactttattcatgagaatttgagtcaccccagcattagcttggaatttccttatt

tcccatttgctttgcaggtgccttggagtcagatctggttttgaatactatcttcctgttatgtgatcttgg

gcagttacttaattttctagtcaataacccgtatctataaaatagagaaaataatcctacacaccgggg

cctgttgtggggcggggagaggggggagggatcgcatttggagatatactaatgtaaatgacaagt

taattggtgcagcacaccaacatggctcatgtctacatatgtaacaaacctgcacgttgtgcacatgtg

ccctagaacttaaagtataataaaaagaaattttaaaaaatcctgtcaaataaggttatagtagagaata

aggatgtgtaaagcatttagtcacgtaaatgcttaaaaaaatgtaatttttacttctttcactgcctcattta

attagttttatctttaataataccttggattcagggtaaagtttcagttatgtcccagtaatcatttattttacc

ctcgaatctgcaatttggatagaacatggtggggacagctcgtctctattccttgcagcattaacagg

ctggaggcaccacttctctggccagcaagttgggcctggttgttggctgagagcctcagttcctttct

gcacaggttcctctttacataggcttctcaacagggctactagagcatcgtcaccatagcagctgtctt

ataacagagagtggtcggtctgagagacaaaaaatggaagctgccaaattgttctgggtctggaaa

ctgtcagggcatcacttgtgccatattcagttggcctaagaattacagagcctgcctcgattcaaagg

gagaggatagagaggactgaaggaatcagtgctcatctttaatatgcagcaggacaggtttgggatt

ttttttcccccttgagtctgtgaaggcattacttaagaacaaagtcaggcatgtataattgaactacagtt

acttgaaatataagcccagaaagtttcagataataaatacaactatttttctgctgttacccttgtacctaa

agatgccatcctaatccccagatctccacaactatacctacatagtagaaggttaaaatgtatccctctt

tttctggtgcatccagcaaaagtaatatcatgaattatgagctctctgagagcaaggatcatatcagtct

tgtttattgttgcagtgaacaagtacagttgcagatattcaggagtaattatctaaatggcagtaggctt

ataaaactgaattttcaccagccacaccctccccccaactccttatctgtaaaaagcttatttgagtggt

tacctgtcttcagtaaagattgcgcttgcatatttgctgtcattgcatattctgcttaattaagctctgttga

tattgcagtttctgtgcatacttacatcttagatgcaatctgagggcctaggaaggccttttaaaaataa

aacaattccgattgcagagaaagtgtaagtcaaggacagttaattcaaggggaacatagaaagctat

ttagattttagttgatggtgccagtcttcagcgtaaagtcaaaagtggagggaagtttagtaaggaaa

aaatgttgggcttggaatacattgtttagtcttcaaagcactttactttttatgaaatatattttagacattca

gcaaatattgaatacttactatatcaggcagtaaagatataaattcattcttaaaatgtgcaacatgttca

aactgaaaaaaatacattcttaaacaggaaactttttccttcatactttttaattaacaagacatataaga

gttgcattaatgggcgtgcttatgattgatcacccagcagcatcattagaaataatatattttattcatgt

gcagaaatcttttggttgtcctggggaaccttgaacacagaaaagagcttttattgataaggtaattga

acacacttgacaattagcttaatatggtttaataccatttgtgggagaagatgaatcagccaggctcttt

acgtcaagaatatgaagtttctcttgagtcaaccaacttaagatgagctacggagactgcagtgaaaa

gttaaatatccaagtacaccagccaatttcacacagtggaaccatgctgtcctcgggcacctgcac

ctcgcccaacagtcatcaactagatggaggctcctggctgcaaggaggatttgatgggaatgagta

aatgtgtcagcatagtccgtcccttctaatggaaaagcaacccaaagagcaaatcctattaatggctg

gatcagtatcatctacttgtcaaaaacattccatgaattatgagtcaaaattttatttatggtggcattaca

cacattaagagatgaggacttctgttagcataatttattagctggaaaagttgagaaggttctctggact

catttttataggtggaacctaagtgatctggataattgcccaccagcaaaattgctgggcatggtgga

caaagaaaatgttccttctaatgattttttatgagctgagtagctattgttcccagctgagtgctcttttcct

ctttttattgttgctgagcaaaagaatttataaaaagctctttcttttgtattaaaaaccctgctcaattgaa

atgcaagttcattaagtaatcttcatttctcttcctgccataataaccctttccctctctgttcgattcaaca

gtatctagcagcactgctccaaattttaagtctgaacagactatattacatagatgtagagaaatactca

atcttcagcattaagagggagcttaatttcacacgggtggaatatgatcactcaggctagatgttggc

cataaatttcaaattagtatctcaacttagcaggggggatcaacagtggcaaacttcaattatgacagg

ataaaaatcacatagagatattggttcaatatggacatctaaactataatgctaaaagccaataattaga

ataagttcattttaagaaaagcattaataatattagctaacgtttagtacctgtgccaaacattctacctat

gttaccttgattttcatagccagcctaagaggtactattatgtatccccattttacaggttaagaaacagg

ctcagaggagtttaggatcttttccaagattacatagccagtaagtggtggcactaggaaccaaattc

agactctgaatcgcatgctgtttatattatattgcactcattctaaatatgtgggaatcagaatgaaggg

gcttgtatgacttttggctcattttttgatgcatgtgacctgggattataaatgtgaaattaggtttacgaa

aggatccagtgtcattgtgcatcatgggcaaggagtacctaatctctttaattcttccctggaagcttac

gatgtccatccaagtgcacatagcaaaagttctgttgtaaagtttagcagagtgactttctttgactcag

agtgatgacggaggaagctttgataagattttatctgaaatgttcatggacaagagctttcaaggaga

acatccagagcaaggttctgaagacagctcatgaaggtgaagcagcagacctggcacaagaaatg

aagagagagctcagtgtattaaagatgaaaacaagaaaaccgaatatattgaaaggagcagagag

gcaatgaaaacaagacaactgaaatgaggtaacttgcagcaattgaaagggaatttcagtacttttat

agaattcttaaaaattgtttcctgctgtttattttcaattttgaacagggttatttgtccatgccatacttttttt

gccaaattccaaaattgtgtatagttctatagttgtctggtggagtcaatggaactttagttaccagtcta

agaatgtgtctttgagattgtccagttaattctctatttccagtagctgtaataaatggtgaaaaggtttct

gactcctggagaaagtttctaactccttatgactaatattcataacagacttgtgagttccttgaacatgg

atacacctatatgcaagagtgtattccaaagctaactcagtgatctttccatttatctattcttggattagt

ggtgcctttgctctttccttctgtaaatgtgaatagttaagagttgactgcagaagtgtttacactttggct

tccatgcctctggaatgtttgtgctttggtggtgagatgtgagactatatttgtatagtctgcatctctcag

gctgccccagaatgttgtacagtgcagtgctgaagaaagcagcaggtacacacagaaatgcagcc

tttcctggttaaccctgcttggatctgagttacactttgtttcctgacttcttgggacttaggtaatcagttt

gccttctactctatctcattttgtactcgcttacatactacattcttgtttgggctttcgtttcttcttgtaagc

agagattttttaaaatccaatatgtgaaaatacggatgcactacaattaaataaataaaatgctgttgtgt

ttgttttgctttaaaattgtaaaggataaacaataagatagttttatctatgtggttttcccgatgcagttaa

aataaaacctaatctgctaaaattgaa

412
TAZ
gctttccggcggttgcaccgggccggggtgccagcgcccgccttcccgtttcctcccgttccgcag

(GenBank
cgcgcccacggcctgtgaccccggcgaccgctccccagtgacgagagagcggggccgggcgc

Accession
tgctccggcctgacctgcgaagggacctcggtccagtcccctgttgcgccgcgcccccgtccgtcc

No.
gtgcgcgggccagtcaggggccagtgtctcgagcggtcgaggtcgcagacctagaggcgcccc

NM_000116.5)
acaggccggcccggggcgctgggagcgccggccgcgggccgggtggggatgcctctgcacgt

gaagtggccgttccccgcggtgccgccgctcacctggaccctggccagcagcgtcgtcatgggct

tggtgggcacctacagctgcttctggaccaagtacatgaaccacctgaccgtgcacaacagggag

gtgctgtacgagctcatcgagaagcgaggcccggccacgcccctcatcaccgtgtccaatcacca

gtcctgcatggacgaccctcatctctgggggatcctgaaactccgccacatctggaacctgaagttg

atgcgttggacccctgcagctgcagacatctgcttcaccaaggagctacactcccacttcttcagctt

gggcaagtgtgtgcctgtgtgccgaggagcagaatttttccaagcagagaatgaggggaaaggtg

ttctagacacaggcaggcacatgccaggtgctggaaaaagaagagagaaaggagatggcgtcta

ccagaaggggatggacttcattttggagaagctcaaccatggggactgggtgcatatcttcccagaa

gggaaagtgaacatgagttccgaattcctgcgtttcaagtggggaatcgggcgcctgattgctgagt

gtcatctcaaccccatcatcctgcccctgtggcatgtcggaatgaatgacgtccttcctaacagtccg

ccctacttcccccgctttggacagaaaatcactgtgctgatcgggaagcccttcagtgccctgcctgt

actcgagcggctccgggcggagaacaagtcggctgtggagatgcggaaagccctgacggacttc

attcaagaggaattccagcatctgaagactcaggcagagcagctccacaaccacctccagcctgg

gagataggccttgcttgctgccttctggattcttggcccgcacagagctggggctgagggatggact

gatgcttttagctcaaacgtggcttttagacagatttgttcatagaccctctcaagtgccctctccgagc

tggtaggcattccagctcctccgtgcttcctcagttacacaaaggacctcagctgcttctcccacttgg

ccaagcagggaggaagaagcttaggcagggctctctttccttcttgccttcagatgttctctcccagg

ggctggcttcaggagggagcatagaaggcaggtgagcaaccagttggctaggggagcaggggg

cccaccagagctgtggagaggggaccctaagactcctcggcctggctcctacccaccgcccttgc

cgaaccaggagctgctcactacctcctcagggatggccgttggccacgtcttccttctgcctgagctt

cccccccaccacaggccctttcctcaggcaaggtctggcctcaggtgggccgcaggcgggaaaa

gcagcccttggccagaagtcaagcccagccacgtggagcctagagtgagggcctgaggtctggc

tgcttgcccccatgctggcgccaacaacttctccatcctttctgcctctcaacatcacttgaatcctagg

gcctgggttttcatgtttttgaaacagaaccataaagcatatgtgttggcttgttgtaaaa

413
ANGPTL3
agaagaaaacagttccacgttgcttgaaattgaaaatcaagataaaaatgttcacaattaagctccttc

(GenBank
tttttattgttcctctagttatttcctccagaattgatcaagacaattcatcatttgattctctatctccagag

Accession
ccaaaatcaagatttgctatgttagacgatgtaaaaattttagccaatggcctccttcagttgggacatg

No.
gtcttaaagactttgtccataagacgaagggccaaattaatgacatatttcaaaaactcaacatatttga

NM_014495.4)
tcagtctttttatgatctatcgctgcaaaccagtgaaatcaaagaagaagaaaaggaactgagaaga

actacatataaactacaagtcaaaaatgaagaggtaaagaatatgtcacttgaactcaactcaaaactt

gaaagcctcctagaagaaaaaattctacttcaacaaaaagtgaaatatttagaagagcaactaactaa

cttaattcaaaatcaacctgaaactccagaacacccagaagtaacttcacttaaaacttttgtagaaaa

acaagataatagcatcaaagaccttctccagaccgtggaagaccaatataaacaattaaaccaacag

catagtcaaataaaagaaatagaaaatcagctcagaaggactagtattcaagaacccacagaaattt

ctctatcttccaagccaagagcaccaagaactactccctttcttcagttgaatgaaataagaaatgtaa

aacatgatggcattcctgctgaatgtaccaccatttataacagaggtgaacatacaagtggcatgtat

gccatcagacccagcaactctcaagtttttcatgtctactgtgatgttatatcaggtagtccatggacatt

aattcaacatcgaatagatggatcacaaaacttcaatgaaacgtgggagaactacaaatatggttttg

ggaggcttgatggagaattttggttgggcctagagaagatatactccatagtgaagcaatctaattat

gttttacgaattgagttggaagactggaaagacaacaaacattatattgaatattctttttacttgggaaa

tcacgaaaccaactatacgctacatctagttgcgattactggcaatgtccccaatgcaatcccggaaa

acaaagatttggtgttttctacttgggatcacaaagcaaaaggacacttcaactgtccagagggttatt

caggaggctggtggtggcatgatgagtgtggagaaaacaacctaaatggtaaatataacaaaccaa

gagcaaaatctaagccagagaggagaagaggattatcttggaagtctcaaaatggaaggttatactc

tataaaatcaaccaaaatgttgatccatccaacagattcagaaagctttgaatgaactgaggcaaattt

aaaaggcaataatttaaacattaacctcattccaagttaatgtggtctaataatctggtattaaatccttaa

gagaaagcttgagaaatagattttttttatcttaaagtcactgtctatttaagattaaacatacaatcacat

aaccttaaagaataccgtttacatttctcaatcaaaattcttataatactatttgttttaaattttgtgatgtg

ggaatcaattttagatggtcacaatctagattataatcaataggtgaacttattaaataacttttctaaata

aaaaatttagagacttttattttaaaaggcatcatatgagctaatatcacaactttcccagtttaaaaaact

agtactcttgttaaaactctaaacttgactaaatacagaggactggtaattgtacagttcttaaatgttgt

agtattaatttcaaaactaaaaatcgtcagcacagagtatgtgtaaaaatctgtaatacaaatttttaaac

tgatgcttcattttgctacaaaataatttggagtaaatgtttgatatgatttatttatgaaacctaatgaagc

agaattaaatactgtattaaaataagttcgctgtctttaaacaaatggagatgactactaagtcacattg

actttaacatgaggtatcactataccttatttgttaaaatatatactgtatacattttatatattttaacactta

atactatgaaaacaaataattgtaaaggaatcttgtcagattacagtaagaatgaacatatttgtggcat

cgagttaaagtttatatttcccctaaatatgctgtgattctaatacattcgtgtaggttttcaagtagaaat

aaacctcgtaacaagttactgaacgtttaaacagcctgacaagcatgtatatatgtttaaaattcaataa

acaaagacccagtccctaaattatagaaatttaaattattcttgcatgtttatcgacatcacaacagatcc

ctaaatccctaaatccctaaagattagatacaaattttttaccacagtatcacttgtcagaatttatttttaa

atatgattttttaaaactgccagtaagaaattttaaattaaacccatttgttaaaggatatagtgcccaagt

tatatggtgacctacctttgtcaatacttagcattatgtatttcaaattatccaatatacatgtcatatatattt

ttatatgtcacatatataaaagatatgtatgatctatgtgaatcctaagtaaatattttgttccagaaaagt

acaaaataataaaggtaaaaataatctataattttcaggaccacagactaagctgtcgaaattaacgct

gatttttttagggccagaataccaaaatggctcctctcttcccccaaaattggacaatttcaaatgcaaa

ataattcattatttaatatatgagttgcttcctctatttggtttcc

414
DGAT2
tgccccgttgtgaggtgataaagtgttgcgctccgggacgccagcgccgcggctgccgcctctgct

(GenBank
ggggtctaggctgtttctctcgcgccaccactggccgccggccgcagctccaggtgtcctagccgc

Accession
ccagcctcgacgccgtcccgggacccctgtgctctgcgcgaagccctggccccgggggccggg

No.
gcatgggccaggggcgcggggtgaagcggcttcccgcggggccgtgactgggcgggcttcagc

NM_001253891.1)
catgaagaccctcatagccgcctactccggggtcctgcgcggcgagcgtcaggccgaggctgac

cggagccagcgctctcacggaggacctgcgctgtcgcgcgaggggtctgggagatggggagtg

gcctgcagtgccatcctcatgtacatattctgcactgattgctggctcatcgctgtgctctacttcacttg

gctggtgtttgactggaacacacccaagaaaggtggcaggaggtcacagtgggtccgaaactggg

ctgtgtggcgctactttcgagactactttcccatccagctggtgaagacacacaacctgctgaccacc

aggaactatatctttggataccacccccatggtatcatgggcctgggtgccttctgcaacttcagcac

agaggccacagaagtgagcaagaagttcccaggcatacggccttacctggctacactggcaggca

acttccgaatgcctgtgttgagggagtacctgatgtctggaggtatctgccctgtcagccgggacac

catagactatttgctttcaaagaatgggagtggcaatgctatcatcatcgtggtcgggggtgcggctg

agtctctgagctccatgcctggcaagaatgcagtcaccctgcggaaccgcaagggctttgtgaaact

ggccctgcgtcatggagctgacctggttcccatctactcctttggagagaatgaagtgtacaagcag

gtgatcttcgaggagggctcctggggccgatgggtccagaagaagttccagaaatacattggtttcg

ccccatgcatcttccatggtcgaggcctcttctcctccgacacctgggggctggtgccctactccaag

cccatcaccactgttgtgggagagcccatcaccatccccaagctggagcacccaacccagcaaga

catcgacctgtaccacaccatgtacatggaggccctggtgaagctcttcgacaagcacaagaccaa

gttcggcctcccggagactgaggtcctggaggtgaactgagccagccttcggggccaattccctg

gaggaaccagctgcaaatcacttttttgctctgtaaatttggaagtgtcatgggtgtctgtgggttattta

aaagaaattataacaattttgctaaaccattacaatgttaggtcttttttaagaaggaaaaagtcagtattt

caagttctttcacttccagcttgccctgttctaggtggtggctaaatctgggcctaatctgggtggctca

gctaacctctcttcttcccttcctgaagtgacaaaggaaactcagtcttcttggggaagaaggattgcc

attagtgacttggaccagttagatgattcactttttgcccctagggatgagaggcgaaagccacttctc

atacaagcccctttattgccactaccccacgctcgtctagtcctgaaactgcaggaccagtttctctgc

caaggggaggagttggagagcacagttgccccgttgtgtgagggcagtagtaggcatctggaatg

ctccagtttgatctcccttctgccacccctacctcacccctagtcactcatatcggagcctggactggc

ctccaggatgaggatgggggtggcaatgacaccctgcaggggaaaggactgccccccatgcacc

attgcagggaggatgccgccaccatgagctaggtggagtaactggtttttcttgggtggctgatgac

atggatgcagcacagactcagccttggcctggagcacatgcttactggtggcctcagtttaccttccc

cagatcctagattctggatgtgaggaagagatccctcttcagaaggggcctggccttctgagcagca

gattagttccaaagcaggtggcccccgaacccaagcctcacttttctgtgccttcctgagggggttg

ggccggggaggaaacccaaccctctcctgtgtgttctgttatctcttgatgagatcattgcaccatgtc

agacttttgtatatgccttgaaaataaatgaaagtgagaatcctctaaaaaaaaaaaa

596
HBV
ctccaccactttccaccaaactcttcaagatcccagagtcagggccctgtactttcctgctggtggctc

Genbank
aagttccggaacagtaaaccctgctccgactactgcctctcccatatcgtcaatcttctcgaggactg

Accession
gggaccctgtaccgaatatggagagcaccacatcaggattcctaggacccctgctcgtgttacagg

No.
cggggtttttcttgttgacaagaatcctcacaataccacagagtctagactcgtggtggacttctctca

KC315400.1
attttctagggggagcacccacgtgtcctggccaaaatttgcagtccccaacctccaatcactcacca

acctcttgtcctccaatttgtcctggttatcgctggatgtgtctgcggcgttttatcatcttcctcttcatcc

tgctgctatgcctcatcttcttgttggttcttctggactaccaaggtatgttgcccgtttgtcctctacttcc

aggaacatcaactaccagcaccggaccatgcaaaacctgcacaactactgctcaagggacctctat

gtttccctcatgttgctgtacaaaacctacggacggaaactgcacctgtattcccatcccatcatcttgg

gctttcgcaaaatacctatgggagtgggcctcagtccgtttctcttggctcagtttactagtgccatttgt

tcagtggttcgtagggattcccccactgtctggctttcagttatatggatgatgtggttttgggggcca

agtctgtacaacatcttgagtccctttataccgctgttaccaattttcttttatctttgggtatacatttaaac

cctcacaaaacaaaaagatggggatattcccttaacttcatgggatatgtaattgggagttggggcac

tttgcctcaggaacatattgtacaaaaaatcaagcaatgttttaggaaacttcctgtaaacaggcctatt

gattggaaagtatgtcaacraattgtgggtcttttggggtttgccgcccctttcacgcaatgtggatatc

ctgctttaatgcctttatatgcatgtatacaagctaagcaggcttttactttctcgccaacttacaaggcct

ttctgtgtaaacaatatctgaacctttaccccgttgctcggcaacggtcaggtctttgccaagtgtttgct

gacgcaacccccactggttggggcttggccataggccatcagcgcatgcgtggaacctttgtggct

cctctgccgatccatactgcggaactcctagcagcttgttttgctcgcagccggtctggagcaaaact

tatcggcaccgacaactctgttgtcctctctcggaaatacacctcctttccatggctgctaggatgtgct

gccaactggatcctgcgcgggacgtcctttgtctacgtcccgtcggcgctgaatcccgcggacgac

ccatctcggggccgtttgggactctaccgtccccttctgcgtctgccgttccgcccgaccacggggc

gcacctctctttacgcggtctccccgtctgtgccttctcatctgccggaccgtgtgcacttcgcttcacc

tctgcacgtcgcatggagaccaccgtgaacgcccacgggaacctgcccaaggtcttgcataagag

gactcttggactttcagcaatgtcaacgaccgaccttgaggcatacttcaaagactgtgtgtttactga

gtgggaggagttgggggaggaggttaggttaaaggtctttgtactaggaggctgtaggcataaattg

gtgtgttcaccagcaccatgcaactttttcacctctgcctaatcatctcatgttcatgtcctactgttcaag

cctccaagctgtgccttgggtggctttggggcatggacattgacccgtataaagaatttggagcttct

gtggagttactctattttttgccttctgacttctttccttctattcgagatctcctcgacaccgcctctgctct

gtatcgggaggccttagagtctccggaacattgttcacctcaccatacggcactcaggcaagcaatt

ctgtgttggggtgagttaatgaatctagccacctgggtgggaagtaatttggaagatccagcatcca

gggaattagtagtcagctatgtcaacgttaatatgggcctaaaaatcagacaactattgtggtttcaca

tttcctgtcttacttttgggagagaaactgttcttgaatatttggtgtcttttggagtgtggattcgcactcc

tcctgcatatagaccacaaaatgcccctatcttatcaacacttccggaaactactgttgttagacgaag

aggcaggtcccctagaagaagaactccctcgcctcgcagacgaaggtctcaatcgccgcgtcgca

gaagatctcaatctcgggaatctcaatgttagtattccttggacacataaggtgggaaactttacggg

gctttattcttctacggtaccttgctttaatcctaaatggcaaactccttcttttcctgacattcatttgcag

gaggacattgttgatagatgtaagcaatttgtggggccccttacagtaaatgaaaacaggagacttaa

attaattatgcctgctaggttttatcccaatgttactaaatatttgcccttagataaagggatcaaaccgta

ttatccagagtatgtagttaatcattacttccagacgcgacattatttacacactctttggaaggcgggg

atcttatataaaagagagtccacacgtagcgcctcattttgcgggtcaccatattcttgggaacaagat

ctacagcatgggaggttggtcttccaaacctcgaaaaggcatggggacaaatctttctgtccccaatc

ccctgggattcttccccgatcatcagttggaccctgcattcaaagccaactcagaaaatccagattgg

gacctcaacccacacaaggacaactggccggacgccaacaaggtgggagtgggagcattcggg

ccagggttcacccctcctcatgggggactgttggggtggagccctcaggctcagggcatattcaca

acagtgccagcagctcctcctcctgcctccaccaatcggcagtcaggaaggcagcctactcccttct

ctccacctctaagagacactcatcctcaggccatgcagtggaa

534
ASO 1
GalNAc4-ps-GalNAc4-ps-GalNAc4-po-mA-po-

lnGpslnApslnTpslnApslnApsApsAps(5OH)CpsGps(5m)Cps(5m)Cps

Gps(5m)CpslnApslnGpslnApscp(5m)C

535
ASO 2
mA-po-

lnGpslnApslnTpslnApslnApsApsAps(5OH)CpsGps(5m)Cps(5m)Cps

Gps(5m)CpslnApslnGpslnApscp(5m)C

⁺ln = Locked nucleic acid (LNA) =

embedded image

lnA = Locked nucleic acid (LNA) A;

ln(5m)C = ln(5m)C = Locked nucleic acid (LNA)-5 methyl C;

lnG = Locked nucleic acid (LNA) G;

lnT = Locked nucleic acid (LNA) T;

(5m)C = 5 methyl C;

cp = scp = cyclopropyl;

cpC = scpC = cyclopropyl C;

scp(5m)C = cyclopropyl-5 methyl C;

(5OH)C =

embedded image

po = phosphodiester linkage;

ps = phosphorothioate linkage

TABLE 6

siNA Activity

HepG2.2.15
HepG2.2.15

Sense Strand
Antisense Strand
in vitro
in vitro

ds-siNA ID
SEQ ID NO.
SEQ ID NO.
EC50*
CC50 (nM)

ds-siNA-001
307
363
A
>40

ds-siNA-002
308
364
A
>40

ds-siNA-003
309
365
B
>40

ds-siNA-004
310
366
B
>40

ds-siNA-005
311
367
B
>40

ds-siNA-006
312
368
C
>40

ds-siNA-007
313
369
A
>40

ds-siNA-008
314
370
A
>40

ds-siNA-009
315
371
B
>40

ds-siNA-010
316
372
A
>40

ds-siNA-011
317
373
B
>40

ds-siNA-012
318
374
A
>40

ds-siNA-013
319
375
A
>40

ds-siNA-014
320
376
B
>40

ds-siNA-015
321
377
A
>40

ds-siNA-016
322
377
C
>40

ds-siNA-017
323
377
A
>40

ds-siNA-018
324
378
A
>40

ds-siNA-019
325
378
A
>40

ds-siNA-020
326
379
A
>40

ds-siNA-021
327
379
B
>40

ds-siNA-022
328
380
A
>40

ds-siNA-023
329
380
B
>40

ds-siNA-024
330
381
A
>40

ds-siNA-025
331
382
A
>40

ds-siNA-026
332
383
C
>40

ds-siNA-027
333
384
A
>40

ds-siNA-028
334
385
B
>40

ds-siNA-029
335
386
A
>40

ds-siNA-030
336
387
C
>40

ds-siNA-031
337
388
A
>40

ds-siNA-032
338
388
C
>40

ds-siNA-033
339
389
B
>40

ds-siNA-034
340
389
C
>40

ds-siNA-035
341
390
A
>40

ds-siNA-036
342
391
A
>40

ds-siNA-037
343
392
B
>40

ds-siNA-038
344
393
A
>40

ds-siNA-039
345
394
A
>40

ds-siNA-040
346
395
A
>40

ds-siNA-041
347
396
C
>40

ds-siNA-042
348
397
A
>40

ds-siNA-043
349
398
B
>40

ds-siNA-044
350
399
A
>40

ds-siNA-045
351
400
A
>40

ds-siNA-046
352
401
A
>40

ds-siNA-047
353
402
A
>40

ds-siNA-048
354
403
A
>40

ds-siNA-049
355
404
B
>40

ds-siNA-050
356
405
A
>40

ds-siNA-051
357
406
A
>40

ds-siNA-052
358
406
A
>40

ds-siNA-053
359
407
A
>40

ds-siNA-054
360
407
A
>40

ds-siNA-055
361
408
A
>40

ds-siNA-056
362
409
A
>40

ds-siNA-0164
423
482

*A = EC50 < 0.5 nM; B = 0.5 nM < EC50 < 1; C = EC50 > 1 nm

TABLE 10

siNA Activity

Sense

Antisense

Strand

Strand

Max HBsAg

SEQ
3′ Ligand
SEQ
HepG2.2.15
HepG2.2.15
Knock Down

ds-siNA ID
ID NO
Monomer⁺
ID NO
EC50*
CC50 (nM)
(Log₁₀)**

ds-siNA-057
415
p-(PS)2-GalNac4
445
ND
ND
X

ds-siNA-058
415
p-(PS)2-GalNac4
446
ND
ND
X

ds-siNA-059
415
p-(PS)2-GalNac4
447
ND
ND
Y

ds-siNA-060
416
p-(PS)2-GalNac4
448
ND
ND
Y

ds-siNA-061
416
p-(PS)2-GalNac4
449
ND
ND
Y

ds-siNA-062
416
p-(PS)2-GalNac4
450
ND
ND
Y

ds-siNA-063
416
p-(PS)2-GalNac4
451
ND
ND
X

ds-siNA-064
417
5′-GalNAc4-
452
ND
ND
Y

(PS)2-p-TEG-p

ds-siNA-065
417
5′-GalNAc4-
452
ND
ND
Y

(PS)2-p-HEG-p

ds-siNA-066
417
5′-GalNAc4-
452
ND
ND
Y

(PS)2-p-(HEG-p)2

ds-siNA-067
417
5′-GalNAc4-
452
ND
ND
Z

(PS)2-p-(HEG-p)2

ds-siNA-068
418
p-(PS)2-GalNac4
453
ND
ND
Y

ds-siNA-069
418
p-(PS)2-GalNac4
454
ND
ND
Y

ds-siNA-070
419
p-(PS)2-GalNac4
455
ND
ND
Y

ds-siNA-071
419
p-(PS)2-GalNac4
456
ND
ND
Y

ds-siNA-072
420
p-(PS)2-GalNac4
457
ND
ND
X

ds-siNA-073
421
p-(PS)2-GalNac4
458
ND
ND
X

ds-siNA-074
422
p-(PS)2-GalNac4
459
ND
ND
Y

ds-siNA-075
423
p-(PS)2-GalNac4
460
ND
ND
Y

ds-siNA-076
423
p-(PS)2-GalNac4
461
ND
ND
Y

ds-siNA-077
423
5′-GalNAc4-
458
ND
ND
Y

(PS)2-p-TEG-p

ds-siNA-078
423
5′-GalNAc4-
458
ND
ND
X

(PS)2-p-HEG-p

ds-siNA-079
423
5′-GalNAc4-
458
ND
ND
Y

(PS)2-p-(HEG-p)2

ds-siNA-080
423
p-(PS)2-GalNac4
462
ND
ND
X

ds-siNA-081
423
p-(PS)2-GalNac4
463
ND
ND
X

ds-siNA-082
423
p-(PS)2-GalNac4
447
ND
ND
X

ds-siNA-083
423
5′-GalNAc4-
458
ND
ND
Z

(PS)2-p-(HEG-p)2

ds-siNA-084
423
p-(PS)2-GalNac4
457
ND
ND
X

ds-siNA-085
423
p-(PS)2-GalNac4
464
ND
ND
X

ds-siNA-086
423
p-(PS)2-GalNac4
465
ND
ND
X

ds-siNA-087
423
p-(PS)2-GalNac4
466
ND
ND
Y

ds-siNA-088
423
p-(PS)2-GalNac4
467
ND
ND
Z

ds-siNA-089
423
p-(PS)2-GalNac4
468
ND
ND
Z

ds-siNA-090
423
p-(PS)2-GalNac4
469
B
>1000
X

ds-siNA-091
423
p-(PS)2-GalNac4
470
C
>1000
ND

ds-siNA-092
423
p-(PS)2-GalNac4
471
B
>1000
ND

ds-siNA-093
423
p-(PS)2-GalNac4
472
B
>1000
ND

ds-siNA-094
423
p-(PS)2-GalNac4
473
B
>1000
ND

ds-siNA-095
423
p-(PS)2-GalNac4
474
C
>1000
ND

ds-siNA-096
423
p-(PS)2-GalNac4
475
B
>1000
ND

ds-siNA-097
423
p-(PS)2-GalNac4
476
B
>1000
ND

ds-siNA-098
423
p-(PS)2-GalNac4
477
A
>1000
ND

ds-siNA-099
423
p-(PS)2-GalNac4
478
B
>1000
ND

ds-siNA-0100
423
p-(PS)2-GalNac4
479
B
>1000
ND

ds-siNA-0101
423
p-(PS)2-GalNac4
480
B
>1000
ND

ds-siNA-0102
423
p-(PS)2-GalNac4
481
A
>1000
ND

ds-siNA-0103
423
p-(PS)2-GalNac4
482
ND
ND
ND

ds-siNA-0104
423
p-(PS)2-GalNac4
483
ND
ND
ND

ds-siNA-0105
423
p-(PS)2-GalNac4
458
ND
ND
Z

ds-siNA-0106
423
p-(PS)2-GalNac4
458
ND
ND
Y

ds-siNA-0107
424
p-(PS)2-GalNac4
457
ND
ND
X

ds-siNA-0108
424
p-(PS)2-GalNac4
484
ND
ND
X

ds-siNA-0109
424
p-(PS)2-GalNac4
485
ND
ND
X

ds-siNA-0110
425
p-(PS)2-GalNac4
486
ND
ND
ND

ds-siNA-0111
425
p-(PS)2-GalNac4
487
ND
ND
ND

ds-siNA-0112
425
p-(PS)2-GalNac4
488
ND
ND
ND

ds-siNA-0113
426
p-(PS)2-GalNac4
489
ND
ND
ND

ds-siNA-0114
427
p-(PS)2-GalNac4
490
ND
ND
X

ds-siNA-0115
428
p-(PS)2-GalNac4
491
ND
ND
Y

ds-siNA-0116
429
p-(PS)2-GalNac4
492
ND
ND
ND

ds-siNA-0117
429
p-(PS)2-GalNac4
493
ND
ND
ND

ds-siNA-0118
429
p-(PS)2-GalNac4
494
ND
ND
ND

ds-siNA-0119
430
p-(PS)2-GalNac4
495
ND
ND
X

ds-siNA-0120
430
p-(PS)2-GalNac4
496
ND
ND
ND

ds-siNA-0121
431
p-(PS)2-GalNac4
497
ND
ND
Y

ds-siNA-0122
432
p-(PS)2-GalNac4
498
ND
ND
ND

ds-siNA-0123
432
p-(PS)2-GalNac4
500
ND
ND
ND

ds-siNA-0124
433
p-(PS)2-GalNac4
501
ND
ND
ND

ds-siNA-0125
434
p-(PS)2-GalNac4
502
ND
ND
Y

ds-siNA-0126
435
p-(PS)2-GalNac4
502
ND
ND
Y

ds-siNA-0127
435
p-(PS)2-GalNac4
503
ND
ND
X

ds-siNA-0128
435
p-(PS)2-GalNac4
501
ND
ND
X

ds-siNA-0129
435
p-(PS)2-GalNac4
504
ND
ND
Y

ds-siNA-0130
435
p-(PS)2-GalNac4
505
ND
ND
Z

ds-siNA-0131
435
p-(PS)2-GalNac4
506
ND
ND
Y

ds-siNA-0132
435
p-(PS)2-GalNac4
507
ND
ND
Z

ds-siNA-0133
435
p-(PS)2-GalNac4
508
ND
ND
Z

ds-siNA-0134
435
p-(PS)2-GalNac4
509
ND
ND
Z

ds-siNA-0135
435
p-(PS)2-GalNac4
510
ND
ND
Y

ds-siNA-0136
435
p-(PS)2-GalNac4
511
B
>1000
ND

ds-siNA-0137
435
p-(PS)2-GalNac4
512
B
>1000
ND

ds-siNA-0138
435
p-(PS)2-GalNac4
513
A
>1000
ND

ds-siNA-0139
435
p-(PS)2-GalNac4
514
B
>1000
ND

ds-siNA-0140
435
p-(PS)2-GalNac4
515
C
>1000
ND

ds-siNA-0141
435
p-(PS)2-GalNac4
516
A
>1000
ND

ds-siNA-0142
435
p-(PS)2-GalNac4
517
C
>1000
ND

ds-siNA-0143
435
p-(PS)2-GalNac4
518
C
>1000
ND

ds-siNA-0144
435
p-(PS)2-GalNac4
519
ND
ND
ND

ds-siNA-0145
436
p-(PS)2-GalNac4
520
ND
ND
ND

ds-siNA-0146
437
p-(PS)2-GalNac4
502
ND
ND
Y

ds-siNA-0147
438
p-(PS)2-GalNac4
501
ND
ND
X

ds-siNA-0148
438
p-(PS)2-GalNac4
521
ND
ND
X

ds-siNA-0149
438
p-(PS)2-GalNac4
522
ND
ND
X

ds-siNA-0150
439
p-(PS)2-GalNac4
523
ND
ND
X

ds-siNA-0151
440
p-(PS)2-GalNac4
524
ND
ND
Y

ds-siNA-0152
441
p-(PS)2-GalNac4
525
ND
ND
Y

ds-siNA-0153
441
p-(PS)2-GalNac4
526
ND
ND
X

ds-siNA-0154
441
p-(PS)2-GalNac4
527
ND
ND
ND

ds-siNA-0155
442
p-(PS)2-GalNac4
525
ND
ND
X

ds-siNA-0156
442
p-(PS)2-GalNac4
528
ND
ND
Y

ds-siNA-0157
442
p-(PS)2-GalNac4
529
ND
ND
ND

ds-siNA-0158
443
p-(PS)2-GalNac4
458
ND
ND
Y

ds-siNA-0159
444
p-(PS)2-GalNac4
502
ND
ND
Y

ds-siNA-0160
423
p-(PS)2-GalNac4
458
ND
ND
ND

ds-siNA-0161
533
p-(PS)2-GalNac4
489
ND
ND
ND

ds-siNA-0162
534
p-(PS)2-GalNac4
491
ND
ND
ND

ds-siNA-0163
432
p-(PS)2-GalNac4
496
ND
ND
ND

ds-siNA-0165
435
p-(PS)2-GalNac4
502
ND
ND
ND

ds-siNA-0166
442
p-(PS)2-GalNac4
530
ND
ND
ND

ds-siNA-0167
427
p-(PS)2-GalNAc4
491
ND
ND
ND

ds-siNA-0168
439
p-(PS)2-GalNac4
531
ND
ND
ND

ds-siNA-0169
423
p-(PS)2-GalNac4
532
ND
ND
ND

ds-siNA-0170
441
p-(PS)2-GalNAc4
530
ND
ND
ND

ds-siNA-0171
442
p-(PS)2-GalNac4
533
ND
ND
ND

ds-siNA-0172
424
p-(PS)2-GalNac4
536
A
>1
ND

ds-siNA-0173
438
None
537

ds-siNA-0174
438
None
538

ds-siNA-0175
438
None
501

ds-siNA-0176
438
p-(PS)2-GalNAc4
537

ds-siNA-0177
438
p-(PS)2-GalNAc4
538

ds-siNA-0178
438
p-(PS)2-GalNAc4
539

⁺Ligand monomers are attached to the 3′ end of the sense strand, unless the ligand monomer is annotated with 5′, in which the ligand monomer is attached to the 5′ end of the sense strand.

Linkers are represented as p-(PS)2, (PS)2-p-TEG-p, (PS)2-p-HEG-p, or (PS)2-p-(HEG-p)2.

*For EC50, A = EC50 ≤5 nM; B = 5 nM < EC50 <10; C = EC50 ≥10.

**For Max HBsAg knock down, X ≥1 log₁₀reduction in HBsAg, Y is 0.5 −1 log₁₀reduction in HBsAg, and Z is <0.5 log₁₀reduction in HBsAg.

Number	Date	Country
3083968	Jun 2019	CA
3 109 254	Dec 2016	EP
WO-2009002944	Dec 2008	WO
WO-2013003520	Jan 2013	WO
WO-2013074974	May 2013	WO
WO-2018185241	Oct 2018	WO
WO-2019217397	Nov 2019	WO

	Number	Date	Country
	63109196	Nov 2020	US
	62986150	Mar 2020	US

	Number	Date	Country
Parent	17194079	Mar 2021	US
Child	17672268		US

Modified short interfering nucleic acid (siNA) molecules and uses thereof

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Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

Agents

CPC

Field of Search

CPC

International Classifications

Disclaimer

Abstract

Description

Claims

CROSS-REFERENCE TO RELATED APPLICATIONS

US Referenced Citations (1)

Foreign Referenced Citations (7)

Non-Patent Literature Citations (23)

Related Publications (1)

Provisional Applications (2)

Continuations (1)

Entry
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