Patent Application
20240124466
A number of fatal neurodegenerative diseases, including prion diseases such as Creutzfeldt-Jakob disease (CJD), Alzheimer's (AD), Parkinson's (PD), frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), are characterized by toxicity resulting from protein misfolding, and are called protein misfolding neurodegenerative diseases (PMNDs). Proteins involved in these diseases misfold and form aggregates of various sizes. Some of these aggregates are highly toxic for neurons, a phenomenon also referred to as proteotoxicity. Protein aggregates can also exhibit “prion-like” properties, in the sense that they propagate from cell to cell and act as seeds to amplify the misfolding and aggregation process within a cell. Such toxic misfolded proteins include the prion protein PrP in CJD, Aβ and tau in AD; α-synuclein and tau in PD; tau, TDP-43 and C90RF72 in FTD; SOD1, TDP43, FUS and C90RF72 in ALS. PD belongs to a broader group of diseases called synucleinopathies, characterized by the accumulation of misfolded α-synuclein aggregates. Lewy body dementia and Multiple System Atrophy are also synucleinopathies. FTD belongs to another group of PMNDs termed tauopathies, a group that also includes chronic traumatic encephalopathy (CTE) and progressive supranuclear palsy (PSP). There are also non-neurological diseases involving protein misfolding, such as diabetes mellitus where the proteins IAPP and proinsulin form protein aggregates that are toxic for pancreatic beta-cells, and cardiomyopathy caused by transthyretin (TTR) amyloidosis (ATTR). TTR amyloid deposits predominantly in peripheral nerves cause a polyneuropathy.
Poor knowledge of the mechanisms of neurotoxicity has hampered the development of effective therapies for PMNDs. To study such mechanisms, a model that uses misfolded and toxic prion protein (TPrP) has been developed, and in particular TPrP reproducibly induces neuronal death in cell culture and after intracerebral injection1. TPrP induces death of more than 60% of cultured neurons at nanomolar concentration, whereas the natively folded counterpart of the prion protein, NTPrP, does not. Therefore, this model provides a highly efficient system to study mechanisms of neuronal death linked to proteotoxicity that are broadly applicable to protein misfolding diseases. Thus, as demonstrated herein, TPrP-based studies spurred the development of new neuroprotective approaches for treating devastating neurodegenerative diseases and other diseases involving the death of particular cell types.
Provided herein, inter alia, are novel compounds that may inhibit NAD consumption and/or increase NAD synthesis.
In an aspect, provided is a compound having a structure of Formula (X),
or a pharmaceutically acceptable salt thereof.
Ring A is a substituted or unsubstituted heteroaryl.
W is —CR1═ or —N═.
L is a bond, substituted or unsubstituted alkylene, or substituted or unsubstituted heteroalkylene.
L2 is —S(O)2—, or —C(O)—.
R1 is hydrogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl.
R10 is independently halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl.
p is an integer of 0 to 3.
X1 is —F, —Br, —Cl, or —I.
R1A is hydrogen, or substituted or unsubstituted alkyl.
Each R2A and R2B is independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, or substituted or unsubstituted heterocycloalkyl; or R2A and R2B together with the nitrogen atom form a substituted or unsubstituted heterocycloalkyl, or substituted or unsubstituted heteroaryl.
In embodiments, the compound has a structure of Formula (XI) or (XI′),
wherein:
In embodiments, the compound has the structure of Formula (XII),
wherein:
Each R10A, R10B, and R10C is independently hydrogen, halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl.
In embodiments, the compound has the structure of Formula (XIII),
wherein:
Each R3, R4 and R5 is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; and
Each R10A, R10B, and R10C is independently hydrogen, halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl;
In embodiments, the compound has the structure of Formula (XIV) or (XV),
Each R10A, R10B, and R10C is independently hydrogen, halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl.
In embodiments, the Ring A is bi-cyclic heteroaryl. In embodiments, the Ring A is selected from
wherein R8 is hydrogen, or substituted or unsubstituted alkyl; the Ring A is unsubstituted or substituted with one or more R3, and R3 is independently halogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl. When Ring A is unsubstituted
—N(R2AR2B) is not a 4-substituted piperidinyl.
In an aspect, provided is a pharmaceutical composition including the compound described herein, a pharmaceutically acceptable salt form thereof, an isomer thereof, or a crystal form thereof.
In an aspect, provided is a method of inhibiting NAD consumption and/or increasing NAD synthesis in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of preventing or inhibiting NAD depletion in a patient, or a method of improving a condition linked to alterations of NAD metabolism in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of providing protection from toxicity of misfolded proteins in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of preventing or treating a protein misfolding neurodegenerative disease in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of preventing or treating retinal disease in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of preventing or treating diabetes, non alcoholic fatty liver disease or other metabolic disease in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of preventing or treating a kidney disease in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of mitigating health effects of aging. The method may include administering to the patient an effective dose of the compound as described herein.
In an aspect, provided is a method of preventing or treating neuronal degeneration associated with multiple sclerosis, an axonopathy, a cardiomyopathy, brain or cardiac ischemia, traumatic brain injury, hearing loss, retinal damage, a metabolic disease, diabetes, non alcoholic fatty liver disease, or kidney failure in a patient. The method may include administering to the patient an effective dose of the compound as described herein.
Other aspects of the inventions are disclosed infra.
The misfolded toxic prion protein TPrP induces a profound depletion of neuronal NAD that is responsible for cell death, since NAD replenishment leads to full recovery of cells exposed to TPrP injury in vitro and in vivo, despite continued exposure to TPrP2. Intranasal NAD treatment improved motor function and activity in murine prion disease. Further it was discovered that NAD depletion in neurons exposed to TPrP may be due, at least in part, to overconsumption of cellular NAD during metabolic reactions called mono-ADP ribosylations2. Inhibitors of poly-ADP-ribosylations, called PARP inhibitors, have previously been developed as anticancer agents. Available selective PARP inhibitors did not alleviate NAD depletion and neuronal death caused by TPrP, demonstrating the need to identify new compounds capable of interfering with the mechanisms at play in misfolded protein-induced toxicity or capable of preventing NAD depletion irrespective of the mechanism underlying NAD imbalance. Imbalance in NAD metabolism is a pathogenic mechanism of a number of human conditions, as described herein.
NAD, as used here, designates both the oxidized (NAD+) and the reduced (NADH) forms of the cofactor. NAD is critical, inter alia, as a co-enzyme for the regulation of energy metabolism pathways such as glycolysis, TCA cycle and oxidative phosphorylation leading to ATP production. In addition, NAD serves as a substrate for signal transduction and post-translational protein modifications called ADP-ribosylations.
Physiological cellular NAD levels result from the balance of activity of NAD synthesis enzymes and NAD consuming enzymes, which may be reasoned that the NAD imbalance induced by misfolded proteins (and that is assessed in our TPrP assay) could therefore result from either impaired NAD biosynthesis or from increased NAD consumption.
In mammalian cells, NAD is mainly synthesized via the salvage pathway using the precursor nicotinamide (NAM). The rate-limiting enzyme for NAD synthesis in the salvage pathway is nicotinamide phosphoribosyltransferase (NAMPT). Other NAD synthesis pathways are the de novo pathway utilizing the precursor tryptophan and the Preiss-Handler pathway utilizing the precursor nicotinic acid (NA).
On the other hand, NAD is consumed during the following cellular reactions: 1) the production of calcium-releasing second messengers cyclic ADP-ribose (cADPR) and ADP-ribose (ADPR) from NAD by enzymes called NAD hydrolases or ADP-ribosyl cyclases (CD38 and CD157); 2) sirtuin-mediated protein deacetylations, and 3) protein ADP-ribosylations, in which one or several ADP-ribose moiety of NAD is transferred unto proteins by mono/oligo-ADP-ribose transferases (mARTs) or poly-ADP ribose transferases (called PARPs).
NAD deficiency is a feature of prion diseases2 and other PMNDs such as PD3,4, AD5-8 and ALS9,10.
NAD dysregulation is now also recognized as being involved in aging11-13, neuronal degeneration associated with multiple sclerosis14, traumatic brain injury15, hearing loss16, axonopathy and axonal degeneration17,18. NAD augmentation such as NAD administration or increased NAD synthesis by enzyme overexpression has been shown to mitigate brain ischemia19 and cardiac ischemia/reperfusion injury20,21.
Age-related retinal/macular degeneration (AMD) is associated with the death of photoreceptors and retinal pigment epithelium (RPE) cells of the eye's retina, and causes progressive loss of vision. NAD levels are decreased in RPE cells isolated from patients with AMD22. Healthy NAD levels are required for vision in mice23. Increasing NAD levels by overexpression of cytoplasmic nicotinamide monomucleotide adenyl-transferase-1 (cytNMNAT1) in mice or NAM supplemented diet in rats showed less Zn2+ staining, NAD+ loss and cell death after light-induced retinal damage (LIRD)24. Similarly, treatment with nicotinamide riboside (NR), a precursor of NAD, maintained retinal NAD levels and protected retinal morphology and function in a mouse model of LIRD25.
NAD metabolism has also been shown to be altered in murine models of type 2 diabetes (T2D)26,27. Alterations of NAD metabolism in diabetes can be explained, at least in part, by our findings that misfolded proteins induce NAD dysregulation. Indeed, diabetes has been shown to be a protein misfolding disease, characterized by pancreatic beta-cell dysfunction and death, concomitant with the deposition of aggregated islet amyloid polypeptide (IAPP), a protein co-expressed and secreted with insulin by pancreatic beta-cells28,29. Similarly to proteins involved in other protein misfolding diseases, IAPP forms toxic oligomers28. Moreover, proinsulin, the precursor of insulin, is also prone to misfold in beta-cells. Misfolding of proinsulin has been linked to type 2, type 1 and some monogenic forms of diabetes progression28,30,31. NR supplementation mitigates type 2 diabetes in mice27.
Substantial decreases in NAD levels are found in degenerative renal conditions and NAD augmentation mitigates acute kidney injury triggered by ischaemia-reperfusion, toxic injury and systemic inflammation32.
Using TPrP as a prototypic amyloidogenic misfolded protein exhibiting high neurotoxicity, a high-throughput screening (HTS) assay has been developed to identify compounds effective at a) preventing cell death; and b) preventing NAD depletion induced by TPrP.
The HTS campaign was performed at Scripps Florida using a subset of the Scripps Drug Discovery Library (SDDL). Several potent, novel and chemically tractable small molecules are identified that can provide complete neuroprotection and preservation of NAD levels when used at doses ranging from low nanomolar to low micromolar levels, which is also detailed in international patent Publication WO 2020/232255. Its entire content is incorporated herein by reference for all purposes.
Members of each series of compounds described herein are highly potent in neuroprotection assays designed to reflect the potential for the successful treatment of several neurodegenerative diseases as described herein. Several compounds described herein activate the NAD synthetic enzyme NAMPT. Further, many have favorable drug-like properties (e.g., they are PAINS-free33 and compliant with Lipinski and Veber rules for drug-likenesss34,35) Since these compounds prevent depletion of cellular NAD levels or increase NAD levels, they have utility in preventing or treating diseases where there is an imbalance in NAD metabolism, such as protein misfolding neurodegenerative diseases, amyloidoses, aging, retinal degeneration, ischemic conditions, traumatic brain injury, kidney failure and metabolic diseases including diabetes and non alcoholic fatty liver disease.
The abbreviations used herein have their conventional meaning within the chemical and biological arts. The chemical structures and formulae set forth herein are constructed according to the standard rules of chemical valency known in the chemical arts.
Where substituent groups are specified by their conventional chemical formulae, written from left to right, they equally encompass the chemically identical substituents that would result from writing the structure from right to left, e.g., —CH2O— is equivalent to —OCH2—.
The term “alkyl,” by itself or as part of another substituent, means, unless otherwise stated, a straight (i.e., unbranched) or branched carbon chain (or carbon), or combination thereof, which may be fully saturated, mono- or polyunsaturated and can include mono-, di- and multivalent radicals. The alkyl may include a designated number of carbons (e.g., C1-C10 means one to ten carbons). Alkyl is an uncyclized chain. Examples of saturated hydrocarbon radicals include, but are not limited to, groups such as methyl (“Me”), ethyl (“Et”), n-propyl (“Pr”), isopropyl (“iPr”), n-butyl (“Bu”), t-butyl (“t-Bu”), isobutyl, sec-butyl, methyl, homologs and isomers of, for example, n-pentyl, n-hexyl, n-heptyl, n-octyl, and the like. An unsaturated alkyl group is one having one or more double bonds or triple bonds. Examples of unsaturated alkyl groups include, but are not limited to, vinyl, 2-propenyl, crotyl, 2-isopentenyl, 2-(butadienyl), 2,4-pentadienyl, 3-(1,4-pentadienyl), ethynyl, 1- and 3-propynyl, 3-butynyl, and the higher homologs and isomers. An alkoxy is an alkyl attached to the remainder of the molecule via an oxygen linker (—O—). An alkyl moiety may be an alkenyl moiety. An alkyl moiety may be an alkynyl moiety. An alkyl moiety may be fully saturated. An alkenyl may include more than one double bond and/or one or more triple bonds in addition to the one or more double bonds. An alkynyl may include more than one triple bond and/or one or more double bonds in addition to the one or more triple bonds.
The term “alkylene,” by itself or as part of another substituent, means, unless otherwise stated, a divalent radical derived from an alkyl, as exemplified, but not limited by, —CH2CH2CH2CH2—. Typically, an alkyl (or alkylene) group will have from 1 to 24 carbon atoms, with those groups having 10 or fewer carbon atoms being preferred herein. A “lower alkyl” or “lower alkylene” is a shorter chain alkyl or alkylene group, generally having eight or fewer carbon atoms. The term “alkenylene,” by itself or as part of another substituent, means, unless otherwise stated, a divalent radical derived from an alkene.
The term “heteroalkyl,” by itself or in combination with another term, means, unless otherwise stated, a stable straight or branched chain, or combinations thereof, including at least one carbon atom and at least one heteroatom (e.g., O, N, P, Si, and S), and wherein the nitrogen and sulfur atoms may optionally be oxidized, and the nitrogen heteroatom may optionally be quaternized. The heteroatom(s) (e.g., O, N, S, Si, or P) may be placed at any interior position of the heteroalkyl group or at the position at which the alkyl group is attached to the remainder of the molecule. Heteroalkyl is an uncyclized chain. Examples include, but are not limited to: —CH2—CH2—O—CH3, —CH2—CH2—NH—CH3, —CH2—CH2—N(CH3)—CH3, —CH2—S—CH2—CH3, —CH2—S—CH2, —S(O)—CH3, —CH2—CH2—S(O)2—CH3, —CH═CHO—CH3, —Si(CH3)3, —CH2—CH═N—OCH3, —CH═CH—N(CH3)—CH3, —O—CH3, —O—CH2—CH3, and —CN. Up to two or three heteroatoms may be consecutive, such as, for example, —CH2—NH—OCH3 and —CH2—O—Si(CH3)3. A heteroalkyl moiety may include one heteroatom (e.g., O, N, S, Si, or P). A heteroalkyl moiety may include two optionally different heteroatoms (e.g., O, N, S, Si, or P). A heteroalkyl moiety may include three optionally different heteroatoms (e.g., O, N, S, Si, or P). A heteroalkyl moiety may include four optionally different heteroatoms (e.g., O, N, S, Si, or P). A heteroalkyl moiety may include five optionally different heteroatoms (e.g., O, N, S, Si, or P). A heteroalkyl moiety may include up to 8 optionally different heteroatoms (e.g., O, N, S, Si, or P). The term “heteroalkenyl,” by itself or in combination with another term, means, unless otherwise stated, a heteroalkyl including at least one double bond. A heteroalkenyl may optionally include more than one double bond and/or one or more triple bonds in additional to the one or more double bonds. The term “heteroalkynyl,” by itself or in combination with another term, means, unless otherwise stated, a heteroalkyl including at least one triple bond. A heteroalkynyl may optionally include more than one triple bond and/or one or more double bonds in additional to the one or more triple bonds.
Similarly, the term “heteroalkylene,” by itself or as part of another substituent, means, unless otherwise stated, a divalent radical derived from heteroalkyl, as exemplified, but not limited by, —CH2—CH2—S—CH2—CH2— and —CH2—S—CH2—CH2—NH—CH2—. For heteroalkylene groups, heteroatoms can also occupy either or both of the chain termini (e.g., alkyleneoxy, alkylenedioxy, alkyleneamino, alkylenediamino, and the like). Still further, for alkylene and heteroalkylene linking groups, no orientation of the linking group is implied by the direction in which the formula of the linking group is written. For example, the formula —C(O)2R′— represents both —C(O)2R′— and —R′C(O)2—. As described above, heteroalkyl groups, as used herein, include those groups that are attached to the remainder of the molecule through a heteroatom, such as —C(O)R′, —C(O)NR′, —NR′R″, —OR′, —SR′, and/or —SO2R′. Where “heteroalkyl” is recited, followed by recitations of specific heteroalkyl groups, such as —NR′R″ or the like, it will be understood that the terms heteroalkyl and —NR′R″ are not redundant or mutually exclusive. Rather, the specific heteroalkyl groups are recited to add clarity. Thus, the term “heteroalkyl” should not be interpreted herein as excluding specific heteroalkyl groups, such as —NR′R″ or the like.
The terms “cycloalkyl” and “heterocycloalkyl,” by themselves or in combination with other terms, mean, unless otherwise stated, cyclic versions of “alkyl” and “heteroalkyl,” respectively. Cycloalkyl and heterocycloalkyl are not aromatic. Additionally, for heterocycloalkyl, a heteroatom can occupy the position at which the heterocycle is attached to the remainder of the molecule. Examples of cycloalkyl include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, 1-cyclohexenyl, 3-cyclohexenyl, cycloheptyl, and the like. Examples of heterocycloalkyl include, but are not limited to, 1-(1,2,5,6-tetrahydropyridyl), 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-morpholinyl, 3-morpholinyl, tetrahydrofuran-2-yl, tetrahydrofuran-3-yl, tetrahydrothien-2-yl, tetrahydrothien-3-yl, 1-piperazinyl, 2-piperazinyl, and the like. A “cycloalkylene” and a “heterocycloalkylene,” alone or as part of another substituent, means a divalent radical derived from a cycloalkyl and heterocycloalkyl, respectively.
In embodiments, a heterocycloalkyl is a heterocyclyl. The term “heterocyclyl” as used herein, means a monocyclic, bicyclic, or multicyclic heterocycle. The heterocyclyl monocyclic heterocycle is a 3, 4, 5, 6 or 7 membered ring containing at least one heteroatom independently selected from the group consisting of 0, N, and S where the ring is saturated or unsaturated, but not aromatic. The 3 or 4 membered ring contains 1 heteroatom selected from the group consisting of O, N and S. The 5 membered ring can contain zero or one double bond and one, two or three heteroatoms selected from the group consisting of O, N and S. The 6 or 7 membered ring contains zero, one or two double bonds and one, two or three heteroatoms selected from the group consisting of O, N and S. The heterocyclyl monocyclic heterocycle is connected to the parent molecular moiety through any carbon atom or any nitrogen atom contained within the heterocyclyl monocyclic heterocycle. Representative examples of heterocyclyl monocyclic heterocycles include, but are not limited to, azetidinyl, azepanyl, aziridinyl, diazepanyl, 1,3-dioxanyl, 1,3-dioxolanyl, 1,3-dithiolanyl, 1,3-dithianyl, imidazolinyl, imidazolidinyl, isothiazolinyl, isothiazolidinyl, isoxazolinyl, isoxazolidinyl, morpholinyl, oxadiazolinyl, oxadiazolidinyl, oxazolinyl, oxazolidinyl, piperazinyl, piperidinyl, pyranyl, pyrazolinyl, pyrazolidinyl, pyrrolinyl, pyrrolidinyl, tetrahydrofuranyl, tetrahydrothienyl, thiadiazolinyl, thiadiazolidinyl, thiazolinyl, thiazolidinyl, thiomorpholinyl, 1,1-dioxidothiomorpholinyl (thiomorpholine sulfone), thiopyranyl, and trithianyl. The heterocyclyl bicyclic heterocycle is a monocyclic heterocycle fused to either a phenyl, a monocyclic cycloalkyl, a monocyclic cycloalkenyl, a monocyclic heterocycle, or a monocyclic heteroaryl. The heterocyclyl bicyclic heterocycle is connected to the parent molecular moiety through any carbon atom or any nitrogen atom contained within the monocyclic heterocycle portion of the bicyclic ring system. Representative examples of bicyclic heterocyclyls include, but are not limited to, 2,3-dihydrobenzofuran-2-yl, 2,3-dihydrobenzofuran-3-yl, indolin-1-yl, indolin-2-yl, indolin-3-yl, 2,3-dihydrobenzothien-2-yl, decahydroquinolinyl, decahydroisoquinolinyl, octahydro-1H-indolyl, and octahydrobenzofuranyl. In embodiments, heterocyclyl groups are optionally substituted with one or two groups which are independently oxo or thia. In certain embodiments, the bicyclic heterocyclyl is a 5 or 6 membered monocyclic heterocyclyl ring fused to a phenyl ring, a 5 or 6 membered monocyclic cycloalkyl, a 5 or 6 membered monocyclic cycloalkenyl, a 5 or 6 membered monocyclic heterocyclyl, or a 5 or 6 membered monocyclic heteroaryl, wherein the bicyclic heterocyclyl is optionally substituted by one or two groups which are independently oxo or thia. Multicyclic heterocyclyl ring systems are a monocyclic heterocyclyl ring (base ring) fused to either (i) one ring system selected from the group consisting of a bicyclic aryl, a bicyclic heteroaryl, a bicyclic cycloalkyl, a bicyclic cycloalkenyl, and a bicyclic heterocyclyl; or (ii) two other ring systems independently selected from the group consisting of a phenyl, a bicyclic aryl, a monocyclic or bicyclic heteroaryl, a monocyclic or bicyclic cycloalkyl, a monocyclic or bicyclic cycloalkenyl, and a monocyclic or bicyclic heterocyclyl. The multicyclic heterocyclyl is attached to the parent molecular moiety through any carbon atom or nitrogen atom contained within the base ring. In embodiments, multicyclic heterocyclyl ring systems are a monocyclic heterocyclyl ring (base ring) fused to either (i) one ring system selected from the group consisting of a bicyclic aryl, a bicyclic heteroaryl, a bicyclic cycloalkyl, a bicyclic cycloalkenyl, and a bicyclic heterocyclyl; or (ii) two other ring systems independently selected from the group consisting of a phenyl, a monocyclic heteroaryl, a monocyclic cycloalkyl, a monocyclic cycloalkenyl, and a monocyclic heterocyclyl. Examples of multicyclic heterocyclyl groups include, but are not limited to 10H-phenothiazin-10-yl, 9,10-dihydroacridin-9-yl, 9,10-dihydroacridin-10-yl, 10H-phenoxazin-10-yl, 10,11-dihydro-5H-dibenzo[b,f]azepin-5-yl, 1,2,3,4-tetrahydropyrido[4,3-g]isoquinolin-2-yl, 12H-benzo[b]phenoxazin-12-yl, and dodecahydro-1H-carbazol-9-yl.
The terms “halo” or “halogen,” by themselves or as part of another substituent, mean, unless otherwise stated, a fluorine, chlorine, bromine, or iodine atom. Additionally, terms such as “haloalkyl” are meant to include monohaloalkyl and polyhaloalkyl. For example, the term “halo(C1-C4)alkyl” includes, but is not limited to, fluoromethyl, difluoromethyl, trifluoromethyl, 2,2,2-trifluoroethyl, 4-chlorobutyl, 3-bromopropyl, and the like.
The term “aryl” means, unless otherwise stated, a polyunsaturated, aromatic, hydrocarbon substituent, which can be a single ring or multiple rings (preferably from 1 to 3 rings) that are fused together (i.e., a fused ring aryl) or linked covalently. A fused ring aryl refers to multiple rings fused together wherein at least one of the fused rings is an aryl ring. The term “heteroaryl” refers to aryl groups (or rings) that contain at least one heteroatom such as N, O, or S, wherein the nitrogen and sulfur atoms are optionally oxidized, and the nitrogen atom(s) are optionally quaternized. Thus, the term “heteroaryl” includes fused ring heteroaryl groups (i.e., multiple rings fused together wherein at least one of the fused rings is a heteroaromatic ring). A 5,6-fused ring heteroarylene refers to two rings fused together, wherein one ring has 5 members and the other ring has 6 members, and wherein at least one ring is a heteroaryl ring. Likewise, a 6,6-fused ring heteroarylene refers to two rings fused together, wherein one ring has 6 members and the other ring has 6 members, and wherein at least one ring is a heteroaryl ring. And a 6,5-fused ring heteroarylene refers to two rings fused together, wherein one ring has 6 members and the other ring has 5 members, and wherein at least one ring is a heteroaryl ring. A heteroaryl group can be attached to the remainder of the molecule through a carbon or heteroatom. Non-limiting examples of aryl and heteroaryl groups include phenyl, naphthyl, pyrrolyl, pyrazolyl, pyridazinyl, triazinyl, pyrimidinyl, imidazolyl, pyrazinyl, purinyl, oxazolyl, isoxazolyl, thiazolyl, furyl, thienyl, pyridyl, pyrimidyl, benzothiazolyl, benzoxazoyl benzimidazolyl, benzofuran, isobenzofuranyl, indolyl, isoindolyl, benzothiophenyl, isoquinolyl, quinoxalinyl, quinolyl, 1-naphthyl, 2-naphthyl, 4-biphenyl, 1-pyrrolyl, 2-pyrrolyl, 3-pyrrolyl, 3-pyrazolyl, 2-imidazolyl, 4-imidazolyl, pyrazinyl, 2-oxazolyl, 4-oxazolyl, 2-phenyl-4-oxazolyl, 5-oxazolyl, 3-isoxazolyl, 4-isoxazolyl, 5-isoxazolyl, 2-thiazolyl, 4-thiazolyl, 5-thiazolyl, 2-furyl, 3-furyl, 2-thienyl, 3-thienyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrimidyl, 4-pyrimidyl, 5-benzothiazolyl, purinyl, 2-benzimidazolyl, 5-indolyl, 1-isoquinolyl, 5-isoquinolyl, 2-quinoxalinyl, 5-quinoxalinyl, 3-quinolyl, and 6-quinolyl. Substituents for each of the above noted aryl and heteroaryl ring systems are selected from the group of acceptable substituents described below. An “arylene” and a “heteroarylene,” alone or as part of another substituent, mean a divalent radical derived from an aryl and heteroaryl, respectively. A heteroaryl group substituent may be —O— bonded to a ring heteroatom nitrogen.
A fused ring heterocyloalkyl-aryl is an aryl fused to a heterocycloalkyl. A fused ring heterocycloalkyl-heteroaryl is a heteroaryl fused to a heterocycloalkyl. A fused ring heterocycloalkyl-cycloalkyl is a heterocycloalkyl fused to a cycloalkyl. A fused ring heterocycloalkyl-heterocycloalkyl is a heterocycloalkyl fused to another heterocycloalkyl. Fused ring heterocycloalkyl-aryl, fused ring heterocycloalkyl-heteroaryl, fused ring heterocycloalkyl-cycloalkyl, or fused ring heterocycloalkyl-heterocycloalkyl may each independently be unsubstituted or substituted with one or more of the substitutents described herein.
Spirocyclic rings are two or more rings wherein adjacent rings are attached through a single atom. The individual rings within spirocyclic rings may be identical or different. Individual rings in spirocyclic rings may be substituted or unsubstituted and may have different substituents from other individual rings within a set of spirocyclic rings. Possible substituents for individual rings within spirocyclic rings are the possible substituents for the same ring when not part of spirocyclic rings (e.g. substituents for cycloalkyl or heterocycloalkyl rings). Spirocylic rings may be substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkylene, substituted or unsubstituted heterocycloalkyl or substituted or unsubstituted heterocycloalkylene and individual rings within a spirocyclic ring group may be any of the immediately previous list, including having all rings of one type (e.g. all rings being substituted heterocycloalkylene wherein each ring may be the same or different substituted heterocycloalkylene). When referring to a spirocyclic ring system, heterocyclic spirocyclic rings means a spirocyclic rings wherein at least one ring is a heterocyclic ring and wherein each ring may be a different ring. When referring to a spirocyclic ring system, substituted spirocyclic rings means that at least one ring is substituted and each substituent may optionally be different.
The symbol “” denotes the point of attachment of a chemical moiety to the remainder of a molecule or chemical formula.
The term “oxo,” as used herein, means an oxygen that is double bonded to a carbon atom.
The term “alkylsulfonyl,” as used herein, means a moiety having the formula —S(O2)—R′, where R′ is a substituted or unsubstituted alkyl group as defined above. R′ may have a specified number of carbons (e.g., “C1-C4 alkylsulfonyl”).
Each of the above terms (e.g., “alkyl,” “heteroalkyl,” “cycloalkyl,” “heterocycloalkyl,” “aryl,” and “heteroaryl”) includes both substituted and unsubstituted forms of the indicated radical. Preferred substituents for each type of radical are provided below.
Substituents for the alkyl and heteroalkyl radicals (including those groups often referred to as alkylene, alkenyl, heteroalkylene, heteroalkenyl, alkynyl, cycloalkyl, heterocycloalkyl, cycloalkenyl, and heterocycloalkenyl) can be one or more of a variety of groups selected from, but not limited to, —OR′, ═O, ═NR′, ═N—OR′, —NR′R″, —SR′, -halogen, —SiR′R″R′″, —OC(O)R′, —C(O)R′, —CO2R′, —CONR′R″, —OC(O)NR′R″, —NR″C(O)R′, —NR′—C(O)NR″R′″, —NR″C(O)2R′, —NR—C(NR′R″R′″)═NR″″, —NR—C(NR′R″)═NR′″, —S(O)R′, —S(O)2R′, —S(O)2NR′R″, —NRSO2R′, —NR′NR″R′″, —ONR′R″, —NR′C(O)NR″NR′″R″″, —CN, —NO2, —NR′SO2R″, —NR′C(O)R″, —NR′C(O)—OR″, —NR′OR″, in a number ranging from zero to (2m′+1), where m′ is the total number of carbon atoms in such radical. R, R′, R″, R′″, and R″″ each preferably independently refer to hydrogen, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl (e.g., aryl substituted with 1-3 halogens), substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, alkoxy, or thioalkoxy groups, or arylalkyl groups. When a compound described herein includes more than one R group, for example, each of the R groups is independently selected as are each R′, R″, R′″, and R″″ group when more than one of these groups is present. When R′ and R″ are attached to the same nitrogen atom, they can be combined with the nitrogen atom to form a 4-, 5-, 6-, or 7-membered ring. For example, —NR′R″ includes, but is not limited to, 1-pyrrolidinyl and 4-morpholinyl. From the above discussion of substituents, one of skill in the art will understand that the term “alkyl” is meant to include groups including carbon atoms bound to groups other than hydrogen groups, such as haloalkyl (e.g., —CF3 and —CH2CF3) and acyl (e.g., —C(O)CH3, —C(O)CF3, —C(O)CH2OCH3, and the like).
Similar to the substituents described for the alkyl radical, substituents for the aryl and heteroaryl groups are varied and are selected from, for example: —OR′, —NR′R″, —SR′, -halogen, —SiR′R″R′″, —OC(O)R′, —C(O)R′, —CO2R′, —CONR′R″, —OC(O)NR′R″, —NR″C(O)R′, —NR′—C(O)NR″R′″, —NR″C(O)2R′, —NR—C(NR′R″R′″)═NR″″, —NR—C(NR′R″)═NR′″, —S(O)R′, —S(O)2R′, —S(O)2NR′R″, —NRSO2R′, —NR′NR″R′″, —ONR′R″, —NR′C(O)NR″NR′″R″″, —CN, —NO2, —R′, —N3, —CH(Ph)2, fluoro(C1-C4)alkoxy, and fluoro(C1-C4)alkyl, —NR′SO2R″, —NR′C(O)R″, —NR′C(O)—OR″, —NR′OR″, in a number ranging from zero to the total number of open valences on the aromatic ring system; and where R′, R″, R′″, and R″″ are preferably independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl. When a compound described herein includes more than one R group, for example, each of the R groups is independently selected as are each R′, R″, R′″, and R″″ groups when more than one of these groups is present.
Substituents for rings (e.g. cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkylene, heterocycloalkylene, arylene, or heteroarylene) may be depicted as substituents on the ring rather than on a specific atom of a ring (commonly referred to as a floating substituent). In such a case, the substituent may be attached to any of the ring atoms (obeying the rules of chemical valency) and in the case of fused rings or spirocyclic rings, a substituent depicted as associated with one member of the fused rings or spirocyclic rings (a floating substituent on a single ring), may be a substituent on any of the fused rings or spirocyclic rings (a floating substituent on multiple rings). When a substituent is attached to a ring, but not a specific atom (a floating substituent), and a subscript for the substituent is an integer greater than one, the multiple substituents may be on the same atom, same ring, different atoms, different fused rings, different spirocyclic rings, and each substituent may optionally be different. Where a point of attachment of a ring to the remainder of a molecule is not limited to a single atom (a floating substituent), the attachment point may be any atom of the ring and in the case of a fused ring or spirocyclic ring, any atom of any of the fused rings or spirocyclic rings while obeying the rules of chemical valency. Where a ring, fused rings, or spirocyclic rings contain one or more ring heteroatoms and the ring, fused rings, or spirocyclic rings are shown with one more floating substituents (including, but not limited to, points of attachment to the remainder of the molecule), the floating substituents may be bonded to the heteroatoms. Where the ring heteroatoms are shown bound to one or more hydrogens (e.g. a ring nitrogen with two bonds to ring atoms and a third bond to a hydrogen) in the structure or formula with the floating substituent, when the heteroatom is bonded to the floating substituent, the substituent will be understood to replace the hydrogen, while obeying the rules of chemical valency.
Two or more substituents may optionally be joined to form aryl, heteroaryl, cycloalkyl, or heterocycloalkyl groups. Such so-called ring-forming substituents are typically, though not necessarily, found attached to a cyclic base structure. In one embodiment, the ring-forming substituents are attached to adjacent members of the base structure. For example, two ring-forming substituents attached to adjacent members of a cyclic base structure create a fused ring structure. In another embodiment, the ring-forming substituents are attached to a single member of the base structure. For example, two ring-forming substituents attached to a single member of a cyclic base structure create a spirocyclic structure. In yet another embodiment, the ring-forming substituents are attached to non-adjacent members of the base structure.
Two of the substituents on adjacent atoms of the aryl or heteroaryl ring may optionally form a ring of the formula -T-C(O)—(CRR′)q—U—, wherein T and U are independently —NR—, —O—, —CRR′—, or a single bond, and q is an integer of from 0 to 3. Alternatively, two of the substituents on adjacent atoms of the aryl or heteroaryl ring may optionally be replaced with a substituent of the formula -A-(CH2)r—B—, wherein A and B are independently —CRR′—, —O—, —NR—, —S—, —S(O)—, —S(O)2—, —S(O)2NR′—, or a single bond, and r is an integer of from 1 to 4. One of the single bonds of the new ring so formed may optionally be replaced with a double bond. Alternatively, two of the substituents on adjacent atoms of the aryl or heteroaryl ring may optionally be replaced with a substituent of the formula —(CRR′)s—X′— (C″R″R′″)d—, where s and d are independently integers of from 0 to 3, and X is —O—, —NR′—, —S—, —S(O)—, —S(O)2—, or —S(O)2NR′—. The substituents R, R′, R″, and R′″ are preferably independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl.
As used herein, the terms “heteroatom” or “ring heteroatom” are meant to include oxygen (O), nitrogen (N), sulfur (S), phosphorus (P), and silicon (Si).
A “substituent group,” as used herein, means a group selected from the following moieties:
In embodiments, a substituted moiety (e.g., substituted alkyl, substituted heteroalkyl, substituted cycloalkyl, substituted heterocycloalkyl, substituted aryl, substituted heteroaryl, substituted alkylene, substituted heteroalkylene, substituted cycloalkylene, substituted heterocycloalkylene, substituted arylene, and/or substituted heteroarylene) is substituted with at least one substituent group, wherein if the substituted moiety is substituted with a plurality of substituent groups, each substituent group may optionally be different. In embodiments, if the substituted moiety is substituted with a plurality of substituent groups, each substituent group is different.
Certain compounds of the present disclosure possess asymmetric carbon atoms (optical or chiral centers) or double bonds; the enantiomers, racemates, diastereomers, tautomers, geometric isomers, stereoisomeric forms that may be defined, in terms of absolute stereochemistry, as (R)- or (S)- or, as (D)- or (L)- for amino acids, and individual isomers are encompassed within the scope of the present disclosure. The compounds of the present disclosure do not include those that are known in art to be too unstable to synthesize and/or isolate. The present disclosure is meant to include compounds in racemic and optically pure forms. Optically active (R)- and (S)-, or (D)- and (L)-isomers may be prepared using chiral synthons or chiral reagents, or resolved using conventional techniques. When the compounds described herein contain olefinic bonds or other centers of geometric asymmetry, and unless specified otherwise, it is intended that the compounds include both E and Z geometric isomers.
As used herein, the term “isomers” refers to compounds having the same number and kind of atoms, and hence the same molecular weight, but differing in respect to the structural arrangement or configuration of the atoms.
The term “tautomer,” as used herein, refers to one of two or more structural isomers which exist in equilibrium and which are readily converted from one isomeric form to another.
It will be apparent to one skilled in the art that certain compounds of this disclosure may exist in tautomeric forms, all such tautomeric forms of the compounds being within the scope of the disclosure.
Unless otherwise stated, structures depicted herein are also meant to include all stereochemical forms of the structure; i.e., the R and S configurations for each asymmetric center. Therefore, single stereochemical isomers as well as enantiomeric and diastereomeric mixtures of the present compounds are within the scope of the disclosure.
It should be noted that throughout the application that alternatives are written in Markush groups, for example, each amino acid position that contains more than one possible amino acid. It is specifically contemplated that each member of the Markush group should be considered separately, thereby comprising another embodiment, and the Markush group is not to be read as a single unit.
The terms “a” or “an,” as used in herein means one or more. In addition, the phrase “substituted with a[n],” as used herein, means the specified group may be substituted with one or more of any or all of the named substituents. For example, where a group, such as an alkyl or heteroaryl group, is “substituted with an unsubstituted C1-C20 alkyl, or unsubstituted 2 to 20 membered heteroalkyl,” the group may contain one or more unsubstituted C1-C20 alkyls, and/or one or more unsubstituted 2 to 20 membered heteroalkyls.
Descriptions of compounds of the present disclosure are limited by principles of chemical bonding known to those skilled in the art. Accordingly, where a group may be substituted by one or more of a number of substituents, such substitutions are selected so as to comply with principles of chemical bonding and to give compounds which are not inherently unstable and/or would be known to one of ordinary skill in the art as likely to be unstable under ambient conditions, such as aqueous, neutral, and several known physiological conditions. For example, a heterocycloalkyl or heteroaryl is attached to the remainder of the molecule via a ring heteroatom in compliance with principles of chemical bonding known to those skilled in the art thereby avoiding inherently unstable compounds.
A person of ordinary skill in the art will understand when a variable (e.g., moiety or linker) of a compound or of a compound genus (e.g., a genus described herein) is described by a name or formula of a standalone compound with all valencies filled, the unfilled valence(s) of the variable will be dictated by the context in which the variable is used. For example, when a variable of a compound as described herein is connected (e.g., bonded) to the remainder of the compound through a single bond, that variable is understood to represent a monovalent form (i.e., capable of forming a single bond due to an unfilled valence) of a standalone compound (e.g., if the variable is named “methane” in an embodiment but the variable is known to be attached by a single bond to the remainder of the compound, a person of ordinary skill in the art would understand that the variable is actually a monovalent form of methane, i.e., methyl or —CH3). Likewise, for a linker variable (e.g., L1, L2, or L3 as described herein), a person of ordinary skill in the art will understand that the variable is the divalent form of a standalone compound (e.g., if the variable is assigned to “PEG” or “polyethylene glycol” in an embodiment but the variable is connected by two separate bonds to the remainder of the compound, a person of ordinary skill in the art would understand that the variable is a divalent (i.e., capable of forming two bonds through two unfilled valences) form of PEG instead of the standalone compound PEG).
As used herein, the term “salt” refers to acid or base salts of the compounds used in the methods of the present invention. Illustrative examples of acceptable salts are mineral acid (hydrochloric acid, hydrobromic acid, phosphoric acid, and the like) salts, organic acid (acetic acid, propionic acid, glutamic acid, citric acid and the like) salts, quaternary ammonium (methyl iodide, ethyl iodide, and the like) salts.
The term “pharmaceutically acceptable salts” is meant to include salts of the active compounds that are prepared with relatively nontoxic acids or bases, depending on the particular substituents found on the compounds described herein. When compounds of the present disclosure contain relatively acidic functionalities, base addition salts can be obtained by contacting the neutral form of such compounds with a sufficient amount of the desired base, either neat or in a suitable inert solvent. Examples of pharmaceutically acceptable base addition salts include sodium, potassium, calcium, ammonium, organic amino, or magnesium salt, or a similar salt. When compounds of the present disclosure contain relatively basic functionalities, acid addition salts can be obtained by contacting the neutral form of such compounds with a sufficient amount of the desired acid, either neat or in a suitable inert solvent. Examples of pharmaceutically acceptable acid addition salts include those derived from inorganic acids like hydrochloric, hydrobromic, nitric, carbonic, monohydrogencarbonic, phosphoric, monohydrogenphosphoric, dihydrogenphosphoric, sulfuric, monohydrogensulfuric, hydriodic, or phosphorous acids and the like, as well as the salts derived from relatively nontoxic organic acids like acetic, propionic, isobutyric, maleic, malonic, benzoic, succinic, suberic, fumaric, lactic, mandelic, phthalic, benzenesulfonic, p-tolylsulfonic, citric, tartaric, oxalic, methanesulfonic, and the like. Also included are salts of amino acids such as arginate and the like, and salts of organic acids like glucuronic or galactunoric acids and the like (see, for example, Berge et al., “Pharmaceutical Salts”, Journal of Pharmaceutical Science, 1977, 66, 1-19). Certain specific compounds of the present disclosure contain both basic and acidic functionalities that allow the compounds to be converted into either base or acid addition salts.
Thus, the compounds of the present disclosure may exist as salts, such as with pharmaceutically acceptable acids. The present disclosure includes such salts. Non-limiting examples of such salts include hydrochlorides, hydrobromides, phosphates, sulfates, methanesulfonates, nitrates, maleates, acetates, citrates, fumarates, proprionates, tartrates (e.g., (+)-tartrates, (−)-tartrates, or mixtures thereof including racemic mixtures), succinates, benzoates, and salts with amino acids such as glutamic acid, and quaternary ammonium salts (e.g. methyl iodide, ethyl iodide, and the like). These salts may be prepared by methods known to those skilled in the art.
The neutral forms of the compounds are preferably regenerated by contacting the salt with a base or acid and isolating the parent compound in the conventional manner. The parent form of the compound may differ from the various salt forms in certain physical properties, such as solubility in polar solvents.
In addition to salt forms, the present disclosure provides compounds, which are in a prodrug form. Prodrugs of the compounds described herein are those compounds that readily undergo chemical changes under physiological conditions to provide the compounds of the present disclosure. Prodrugs of the compounds described herein may be converted in vivo after administration. Additionally, prodrugs can be converted to the compounds of the present disclosure by chemical or biochemical methods in an ex vivo environment, such as, for example, when contacted with a suitable enzyme or chemical reagent.
Certain compounds of the present disclosure can exist in unsolvated forms as well as solvated forms, including hydrated forms. In general, the solvated forms are equivalent to unsolvated forms and are encompassed within the scope of the present disclosure. Certain compounds of the present disclosure may exist in multiple crystalline or amorphous forms. In general, all physical forms are equivalent for the uses contemplated by the present disclosure and are intended to be within the scope of the present disclosure.
“Pharmaceutically acceptable excipient” and “pharmaceutically acceptable carrier” refer to a substance that aids the administration of an active agent to and absorption by a subject and can be included in the compositions of the present disclosure without causing a significant adverse toxicological effect on the patient. Non-limiting examples of pharmaceutically acceptable excipients include water, NaCl, normal saline solutions, lactated Ringer's, normal sucrose, normal glucose, binders, fillers, disintegrants, lubricants, coatings, sweeteners, flavors, salt solutions (such as Ringer's solution), alcohols, oils, gelatins, carbohydrates such as lactose, amylose or starch, fatty acid esters, hydroxymethycellulose, polyvinyl pyrrolidine, and colors, and the like. Such preparations can be sterilized and, if desired, mixed with auxiliary agents such as lubricants, preservatives, stabilizers, wetting agents, emulsifiers, salts for influencing osmotic pressure, buffers, coloring, and/or aromatic substances and the like that do not deleteriously react with the compounds of the disclosure. One of skill in the art will recognize that other pharmaceutical excipients are useful in the present disclosure.
The term “preparation” is intended to include the formulation of the active compound with encapsulating material as a carrier providing a capsule in which the active component with or without other carriers, is surrounded by a carrier, which is thus in association with it. Similarly, cachets and lozenges are included. Tablets, powders, capsules, pills, cachets, and lozenges can be used as solid dosage forms suitable for oral administration.
As used herein, the term “about” means a range of values including the specified value, which a person of ordinary skill in the art would consider reasonably similar to the specified value. In embodiments, about means within a standard deviation using measurements generally acceptable in the art. In embodiments, about means a range extending to +/−10% of the specified value. In embodiments, about includes the specified value.
The term “EC50” or “half maximal effective concentration” as used herein refers to the concentration of a molecule (e.g., small molecule, drug, antibody, chimeric antigen receptor or bispecific antibody) capable of inducing a response which is halfway between the baseline response and the maximum response after a specified exposure time. In embodiments, the EC50 is the concentration of a molecule (e.g., small molecule, drug, antibody, chimeric antigen receptor or bispecific antibody) that produces 50% of the maximal possible effect of that molecule.
As used herein, the term “neurodegenerative disorder” refers to a disease or condition in which the function of a subject's nervous system becomes impaired. Examples of neurodegenerative diseases that may be treated with a compound, pharmaceutical composition, or method described herein include Alexander's disease, Alper's disease, Alzheimer's disease, Amyotrophic lateral sclerosis, Ataxia telangiectasia, Batten disease (also known as Spielmeyer-Vogt-Sjogren-Batten disease), Bovine spongiform encephalopathy (BSE), Canavan disease, chronic fatigue syndrome, Chronic Traumatic Encephalopathy, Cockayne syndrome, Corticobasal degeneration, Creutzfeldt-Jakob disease, frontotemporal dementia, Gerstmann-Straussler-Scheinker syndrome, Huntington's disease, HIV-associated dementia, Kennedy's disease, Krabbe's disease, Kuru, Lewy body dementia, Machado-Joseph disease (Spinocerebellar ataxia type 3), Multiple sclerosis, Multiple System Atrophy, myalgic encephalomyelitis, Narcolepsy, Neuroborreliosis, Parkinson's disease, Pelizaeus-Merzbacher Disease, Pick's disease, Primary lateral sclerosis, Prion diseases, Refsum's disease, Sandhoffs disease, Schilder's disease, Subacute combined degeneration of spinal cord secondary to Pernicious Anaemia, Schizophrenia, Spinocerebellar ataxia (multiple types with varying characteristics), Spinal muscular atrophy, Steele-Richardson-Olszewski disease, progressive supranuclear palsy, or Tabes dorsalis.
As used herein, the term “retinal degeneration” refers to a disease or condition in which the vision of a subject becomes impaired due to dysfunction and/or damage of the eye's retina. Examples of retinal degeneration include age-related macular degeneration (AMD). Early stage AMD includes abnormalities of the retinal pigment epithelium and drusen. Late-stage AMD can include dry (non-neovascular, atrophic) macular degeneration, wet (neovascular) macular degeneration, proliferative diabetic retinopathy (PDR), diabetic macular edema (DME).
As used herein, the term “axonopathy” refers to functional or structural damage to a neuron or pheripheral nerve.
As used herein, the term “peripheral” refers to the part of the body anatomy located outside of the central nervous system.
As used herein, the term “amyloidosis” refers to a condition linked to the deposition of protein amyloid. An amyloidosis can occur in the central nervous system and is also referred to as a protein misfolding neurodegenerative disease (e.g. prion diseases, AD, PD and other synucleinopathies, ALS, tauopathies). An amyloidosis can occur outside of the central nervous system and can be widespread, i.e. systemic, or located in different organ systems. When amyloid deposits occurs in several organs, it is referred to as “multisystem”. Examples of amyloidoses are cardiomyopathy or polyneuropathy caused by the deposition of the protein TTR in the heart or peripheral nerves, respectively. Other examples of peripheral amyloidoses are AL (Primary) Amyloidosis or AA (Secondary) Amyloidosis.
As used herein, the term “metabolic disorder” refers to a disease or condition in which body metabolism, i.e. the process in which the body gets, makes and stores energy from food, is disrupted. Some metabolic disorders affect the breakdown of amino acids, carbohydrates, or lipids. Other metabolic disorders are known as mitochondrial diseases and affect mitochondria, the cellular organelles that produce energy. Examples of metabolic disorders are diabetes mellitus (sugar metabolism), hypercholesterolemia, Gaucher disease (lipid metabolism), non alcoholic fatty liver disease (NAFLD), metabolic syndrome (dyslipidemia, abdominal obesity, insulin resistance, proinflammatory state).
As used herein, the terms “kidney disease”, “kidney failure”, “renal disease” or “renal failure” refer to a disease or condition in which a subject loses kidney function. The condition can have various etiologies such as infectious, inflammatory, ischemic or traumatic. Kidney failure can be acute, leading to rapid loss of kidney function, or chronic, leading to gradual loss of kidney function. The condition ultimately leads to the accumulation of dangerous levels of fluid, electrolytes and waste products in the body. End-stage kidney failure is fatal without artificial filtering of the blood (dialysis) or kidney transplant.
As used herein, the term “ischemic condition” or “ischemia” refers to a condition in which the blood flow is restricted or reduced in a part of the body, such as the heart or the brain.
The terms “treating”, or “treatment” refers to any indicia of success in the therapy or amelioration of an injury, disease, pathology or condition, including any objective or subjective parameter such as abatement; remission; diminishing of symptoms or making the injury, pathology or condition more tolerable to the patient; slowing in the rate of degeneration or decline; making the final point of degeneration less debilitating; improving a patient's physical or mental well-being. The treatment or amelioration of symptoms can be based on objective or subjective parameters; including the results of a physical examination, neuropsychiatric exams, and/or a psychiatric evaluation. The term “treating” and conjugations thereof, may include prevention of an injury, pathology, condition, or disease. In embodiments, treating is preventing. In embodiments, treating does not include preventing.
“Treating” or “treatment” as used herein (and as well-understood in the art) also broadly includes any approach for obtaining beneficial or desired results in a subject's condition, including clinical results. Beneficial or desired clinical results can include, but are not limited to, alleviation or amelioration of one or more symptoms or conditions, diminishment of the extent of a disease, stabilizing (i.e., not worsening) the state of disease, prevention of a disease's transmission or spread, delay or slowing of disease progression, amelioration or palliation of the disease state, diminishment of the reoccurrence of disease, and remission, whether partial or total and whether detectable or undetectable. In other words, “treatment” as used herein includes any cure, amelioration, or prevention of a disease. Treatment may prevent the disease from occurring; inhibit the disease's spread; relieve the disease's symptoms, fully or partially remove the disease's underlying cause, shorten a disease's duration, or do a combination of these things.
The term “prevent” refers to a decrease in the occurrence of disease symptoms in a patient. As indicated above, the prevention may be complete (no detectable symptoms) or partial, such that fewer symptoms are observed than would likely occur absent treatment.
“Patient” or “subject in need thereof” refers to a living organism suffering from or prone to a disease or condition that can be treated by administration of a pharmaceutical composition as provided herein. Non-limiting examples include humans, other mammals, bovines, rats, mice, dogs, monkeys, goat, sheep, cows, deer, and other non-mammalian animals. In some embodiments, a patient is human.
A “effective amount” is an amount sufficient for a compound to accomplish a stated purpose relative to the absence of the compound (e.g. achieve the effect for which it is administered, treat a disease, reduce enzyme activity, increase enzyme activity, reduce a signaling pathway, or reduce one or more symptoms of a disease or condition). An example of an “effective amount” is an amount sufficient to contribute to the treatment, prevention, or reduction of a symptom or symptoms of a disease, which could also be referred to as a “therapeutically effective amount.” A “reduction” of a symptom or symptoms (and grammatical equivalents of this phrase) means decreasing of the severity or frequency of the symptom(s), or elimination of the symptom(s). A “prophylactically effective amount” of a drug is an amount of a drug that, when administered to a subject, will have the intended prophylactic effect, e.g., preventing or delaying the onset (or reoccurrence) of an injury, disease, pathology or condition, or reducing the likelihood of the onset (or reoccurrence) of an injury, disease, pathology, or condition, or their symptoms. The full prophylactic effect does not necessarily occur by administration of one dose, and may occur only after administration of a series of doses. Thus, a prophylactically effective amount may be administered in one or more administrations. An “activity decreasing amount,” as used herein, refers to an amount of antagonist required to decrease the activity of an enzyme relative to the absence of the antagonist. A “function disrupting amount,” as used herein, refers to the amount of antagonist required to disrupt the function of an enzyme or protein relative to the absence of the antagonist. The exact amounts will depend on the purpose of the treatment, and will be ascertainable by one skilled in the art using known techniques (see, e.g., Lieberman, Pharmaceutical Dosage Forms (vols. 1-3, 1992); Lloyd, The Art, Science and Technology of Pharmaceutical Compounding (1999); Pickar, Dosage Calculations (1999); and Remington: The Science and Practice of Pharmacy, 20th Edition, 2003, Gennaro, Ed., Lippincott, Williams & Wilkins).
For any compound described herein, the therapeutically effective amount can be initially determined from cell culture assays. Target concentrations will be those concentrations of active compound(s) that are capable of achieving the methods described herein, as measured using the methods described herein or known in the art.
As is well known in the art, therapeutically effective amounts for use in humans can also be determined from animal models. For example, a dose for humans can be formulated to achieve a concentration that has been found to be effective in animals. The dosage in humans can be adjusted by monitoring compounds effectiveness and adjusting the dosage upwards or downwards, as described above. Adjusting the dose to achieve maximal efficacy in humans based on the methods described above and other methods is well within the capabilities of the ordinarily skilled artisan.
The term “therapeutically effective amount,” as used herein, refers to that amount of the therapeutic agent sufficient to ameliorate the disorder, as described above. For example, for the given parameter, a therapeutically effective amount will show an increase or decrease of at least 5%, 10%, 15%, 20%, 25%, 40%, 50%, 60%, 75%, 80%, 90%, or at least 100%. Therapeutic efficacy can also be expressed as “-fold” increase or decrease. For example, a therapeutically effective amount can have at least a 1.2-fold, 1.5-fold, 2-fold, 5-fold, or more effect over a control.
Dosages may be varied depending upon the requirements of the patient and the compound being employed. The dose administered to a patient, in the context of the present disclosure, should be sufficient to effect a beneficial therapeutic response in the patient over time. The size of the dose also will be determined by the existence, nature, and extent of any adverse side-effects. Determination of the proper dosage for a particular situation is within the skill of the practitioner. Generally, treatment is initiated with smaller dosages which are less than the optimum dose of the compound. Thereafter, the dosage is increased by small increments until the optimum effect under circumstances is reached. Dosage amounts and intervals can be adjusted individually to provide levels of the administered compound effective for the particular clinical indication being treated. This will provide a therapeutic regimen that is commensurate with the severity of the individual's disease state.
As used herein, the term “administering” means oral administration, administration as a suppository, topical contact, intravenous, parenteral, intraperitoneal, intramuscular, intralesional, intrathecal, intranasal or subcutaneous administration, or the implantation of a slow-release device, e.g., a mini-osmotic pump, to a subject. Administration is by any route, including parenteral and transmucosal (e.g., buccal, sublingual, palatal, gingival, nasal, vaginal, rectal, or transdermal). Parenteral administration includes, e.g., intravenous, intramuscular, intra-arteriole, intradermal, subcutaneous, intraperitoneal, intraventricular, and intracranial. Other modes of delivery include, but are not limited to, the use of liposomal formulations, intravenous infusion, transdermal patches, etc. In embodiments, the administering does not include administration of any active agent other than the recited active agent.
A “cell” as used herein, refers to a cell carrying out metabolic or other function sufficient to preserve or replicate its genomic DNA. A cell can be identified by well-known methods in the art including, for example, presence of an intact membrane, staining by a particular dye, ability to produce progeny or, in the case of a gamete, ability to combine with a second gamete to produce a viable offspring. Cells may include prokaryotic and eukaroytic cells. Prokaryotic cells include but are not limited to bacteria. Eukaryotic cells include but are not limited to yeast cells and cells derived from plants and animals, for example mammalian, insect (e.g., spodoptera) and human cells. Cells may be useful when they are naturally nonadherent or have been treated not to adhere to surfaces, for example by trypsinization.
In an aspect, provided herein are compounds that may provide complete neuroprotection and protection of cell types other than neurons, and preservation of NAD levels. The compounds may be highly potent in a) preventing neuronal and/or cellular death; and b) preventing NAD depletion induced by TPrP, for example, as identified by neuroprotection assays when used at doses ranging from low nanomolar to low micromolar levels.
In an aspect, a compound has a Formula (I),
or a pharmaceutically acceptable salt thereof,
In an aspect, also provided is a compound having a structure of Formula (X),
or a pharmaceutically acceptable salt thereof,
Each R2A and R2B is independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, or substituted or unsubstituted heterocycloalkyl; or R2A and R2B together with the nitrogen atom form a substituted or unsubstituted heterocycloalkyl, or substituted or unsubstituted heteroaryl.
In embodiments, each R2A and R2B is independently selected from hydrogen, substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted C6-C12 cycloalkyl, or substituted or unsubstituted 4 to 12 membered heterocycloalkyl. In embodiments, R2A is selected from hydrogen, substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted C6-C12 cycloalkyl, or substituted or unsubstituted 4 to 12 membered heterocycloalkyl (e.g., monocyclic, bicyclic, or multicyclic heterocyclic ring). In embodiments, R2A is hydrogen. In embodiments, R2A is substituted or unsubstituted C1-C4 alkyl. In embodiments, R2A is substituted or unsubstituted C6-C12 cycloalkyl. In embodiments, R2A is substituted or unsubstituted 4 to 12 membered heterocycloalkyl. In embodiments, R2B is independently selected from hydrogen, substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted C6-C12 cycloalkyl, or substituted or unsubstituted 4 to 12 membered heterocycloalkyl. In embodiments, R2B is hydrogen. In embodiments, R2B is substituted or unsubstituted C1-C4 alkyl. In embodiments, R2B is substituted or unsubstituted C6-C12 cycloalkyl. In embodiments, R2B is substituted or unsubstituted 4 to 12 membered heterocycloalkyl.
In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 4 to 12 membered heterocycloalkyl (e.g., monocyclic, bicyclic, or multicyclic heterocyclic ring), or a substituted or unsubstituted 5 to 12 membered heteroaryl (e.g., monocyclic, bicyclic, or multicyclic heterocyclic ring). In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 4 to 12 membered heterocycloalkyl (e.g., monocyclic, bicyclic, or multicyclic heterocyclic ring). In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 4 to 8 membered heterocycloalkyl (e.g., monocyclic, bicyclic, or multicyclic heterocyclic ring). In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 4 to 6 membered heterocycloalkyl. In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 4 to 5 membered heterocycloalkyl. In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 5 to 6 membered heterocycloalkyl. In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 5 to 12 membered heteroaryl. In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 5 to 8 membered heteroaryl. In embodiments, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted 5 to 6 membered heteroaryl.
In embodiments, L1 is a bond, unsubstituted C1-C4 alkylene, or unsubstituted 2 to 4 membered heteroalkylene. In embodiments, L1 is a bond. In embodiments, L1 is unsubstituted C1-C4 alkylene. In embodiments, L1 is unsubstituted methylene. In embodiments, L1 is unsubstituted ethylene. In embodiments, L1 is unsubstituted 2 to 4 membered heteroalkylene. In embodiments, L1 is unsubstituted 2 to 4 membered heteroalkylene.
In embodiments, L1 is —NH—(CH2)n— and n is an integer of 1 to 3. In embodiments, n is 1. In embodiments, n is 2. In embodiments, n is 3. In embodiments, L1 is —NH—CH2—.
In embodiments, the compound has a structure of Formula (II),
wherein:
Each R3A, R3B, and R3C is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl. W, L2, R2A, and R2B are as described herein.
In embodiments, the compound has a structure of Formula (XI),
wherein:
Each R3A, R3B, and R3C is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; and
In embodiments, W1A is —N═. In embodiments, W1A is —CR3C═. In embodiments, the Ring A is
In embodiments, R3B is hydrogen, or unsubstituted C1-C4 alkyl. In embodiments, R3B is hydrogen. In embodiments, R3B is —CH3. In embodiments, Ring A is
In embodiments, when R3C is hydrogen, R2A and R2B together with the nitrogen atom form a substituted or unsubstituted morpholinyl.
In embodiments, the compound has a structure of Formula (II′),
wherein:
In embodiments, the compound has a structure of Formula (XI′),
W, W1B, L2, R2A, R2B, R3A, R10 and p are as described above.
In embodiments, W1B is —NH—. In embodiments, W1B is —CH2—. In embodiments, the Ring A is
which may be substituted or unsubstituted.
In embodiments, R3A is a substituted or unsubstituted C5-C6 cycloalkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted pyridyl. In embodiments, R3A is hydrogen.
In embodiments, R3A is a substituted or unsubstituted C5-C6 cycloalkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted pyridyl. In embodiments, R3A is
z is an integer of 0 to 5. In embodiments, z is 0. In embodiments, z is 2. In embodiments, z is 3. In embodiments, z is 4. In embodiments, z is 5.
Each R4 is independently halogen, —OR4A, —NR4BR4C, —NO2, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl; and each R4A, R4B and R4C is independently hydrogen, or substituted or unsubstituted alkyl.
In embodiments, W is —CR1═. In embodiments, W1 is —N═.
In embodiments, the compound has the structure of Formula (II-a),
R1, R2A, R2B, R3B, R4 and z are as described herein.
In embodiments, the compound has the structure of Formula (XI-a).
wherein:
Each R10A, R10B, and R10C is independently hydrogen, halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl. R1, R2A, R2B, R3B, R4, and z are as described above.
In embodiments, Formula in (II-a) or (XI-a), R4 is —F, —Br, —OH, —OCH3, —NH2, —N(CH3)2, or NO2. In embodiments, R4 is —F. In embodiments, R4 is —Br. In embodiments, R4 is —OH. In embodiments, R4 is —OCH3. In embodiments, R4 is —NH2. In embodiments, R4 is —N(CH3)2. In embodiments, R4 is —NO2. In embodiments, z is 2 and both R4 are —F.
In embodiments, the compound has the structure of Formula (II′-a),
R1, R2A, R2B, R4 and z are as described herein.
In embodiments, the compound has the structure of Formula (XI′-a)
R1, R2A, R2B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, the compound has the structure of Formula (II-b),
R1, R2A, R2B, R3B, R4 and z are as described herein.
In embodiments, Formula in (II-b), z is 0.
In embodiments, the compound has the structure of Formula (XI-b),
R1, R2A, R2B, R3B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, the compound has the structure of Formula (II-c),
R1, R2A, R2B, R3B, R4 and z are as described herein.
In embodiments, the compound has the structure of Formula (XI-c),
R1, R2A, R2B, R3B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, the compound has the structure of Formula (II-d),
R1, R2A, R2B, R3B, R4 and z are as described herein.
In embodiments, the compound has the structure of Formula (XI-d),
R1, R2A, R2B, R3B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, the compound has the structure of Formula (II-e),
In embodiments, the compound has the structure of Formula (XI-e),
R1, R2A, R2B, R3B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, the compound has the structure of Formula (II-f),
R1, R2A, R2B, R3B, R4 and z are as described herein.
In embodiments, the compound has the structure of Formula (XI-f),
R1, R2A, R2B, R3B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, the compound has the structure of Formula (II-g),
R1, R2A, R2B, R3B, R4 and z are as described herein.
In embodiments, the compound has the structure of Formula (XI-g),
R1, R2A, R2B, R3B, R4, R10A, R10B, R10C, and z are as described herein.
In embodiments, in Formula (II-a), (II′-a), (II-b), (II-c), (II-d), (II-e), (II-f), (II-g), (XI-a), (XI′-a), (XI-b), (XI-c), (XI-d), (XI-e), (XI-f), or (XI-g), z is an integer of 0 to 2. In embodiments, z is 0. In embodiments, z is 1. In embodiments, z is 2. In embodiments, in Formula (II′-a), (II-b), (II-c), (II-d), (II-e), (II-f), (II-g), (XI′-a), (XI-b), (XI-c), (XI-d), (XI-e), (XI-f), or (XI-g), z is 0. In embodiments, in Formula (II-a) or (XI-a), z is 0, 1, or 2.
In embodiments, in Formula (II-a), (II′-a), (II-b), (II-c), (II-d), (II-e), (II-f), (II-g), (XI-a), (XI′-a), (XI-b), (XI-c), (XI-d), (XI-e), (XI-f), or (XI-g), R3B is hydrogen or —CH3. In embodiments, R3B is hydrogen. In embodiments, R3B is —CH3.
In embodiments, R2A and R2B together with the nitrogen attached thereto form a
which is substituted or unsubstituted.
In embodiments, R2A and R2B together with the nitrogen attached thereto form a
In embodiments, R2A and R2B together with the nitrogen attached thereto form
Each R6A, R7A, R7B, R7C and R7D is independently hydrogen, or substituted or unsubstituted alkyl.
In embodiments, R6 is —H,
In embodiments, one of R2A and R2B is hydrogen and the other one of R2A and R2B is
In embodiments, R1 is —CH3, —OCF3, —CF3, —OCH3, —CN or
In embodiments, R1 is —CH3, —OCF3, —CF3, —OCH3, —CN or
In embodiments, R1 is —CH3. In embodiments, R1 is —OCF3. In embodiments, R1 is —CF3. In embodiments, R1 is —OCH3. In embodiments, R1 is —CN. In embodiments, R1 is
In embodiments, R1 is not halogen. In embodiments, R1 is not —Cl. In embodiments, R1 is not —F.
In embodiments, each R10A, R10B and R10C is independently hydrogen, halogen, or —CH3. In embodiments, R10A is hydrogen, halogen, or —CH3. In embodiments, R10B is hydrogen, halogen, or —CH3. In embodiments, R10C is hydrogen, halogen, or —CH3.
In embodiments, R10A is hydrogen. In embodiments, R10B is hydrogen, —F, or —CH3. In embodiments, R10C is hydrogen, —F, or —CH3.
In embodiment, in Formula (II-a) or (XI-a), R1 is —CH3, —OCF3, —CF3, —OCH3, —CN or
In embodiments, in Formula (II′-a), (II-c), (II-d), (II-e), (II-f), (XI′-a), (XI-c), (XI-d), (XI-e), or (XI-f), R1 is —CH3. In embodiment, in Formula (II-g) or (XI-g), R1 is or —CF3.
Exemplary compounds of Formula (II) or (XI) are shown in Table 1.
In embodiments, the compound has the structure of Formula (III),
wherein:
In embodiments, the compound has the structure of Formula (XII),
wherein:
Each R10A, R10B, and R10C is independently hydrogen, halogen, —CX13, —CHX12, —CH2X1, —OCX13, —OCH2X1, —OCHX12, —CN, —OR1A, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl. W, R2A, and R2B are as described herein.
In embodiments, R2A and R2B together with the nitrogen attached thereto form
R6, R7A, R7B, R7C and R7D are as described herein.
In embodiments, R2A and R2B together with the nitrogen attached thereto form
In embodiments, the compound has the structure of Formula (III-a),
R1 and R3 are as described herein.
In embodiments, the compound has the structure of Formula (III-b),
R1 and R3 are as described herein.
In embodiments, the compound has the structure of Formula (XII-a),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, the compound has the structure of Formula (XII-b),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, the compound has the structure of Formula (XII-c),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, R6 is —H,
In embodiments, each R6A, R7A, R7B, R7C and R7D is independently hydrogen, or —CH3.
In embodiments, two of R7A, R7B, R7C and R7D are independently hydrogen and the other two are —CH3. In embodiments, R7A and R7C are hydrogen, and R7B and R7D are —CH3. In embodiments, R7A and R7C are —CH3, and R7B and R7D are hydrogen. In embodiments, R7A and R7D are hydrogen, and R7B and R7C are —CH3. In embodiments, R7A and R7D are —CH3, and R7B and R7C are hydrogen.
In embodiments, in Formula (III-a), (III-b), (XII-a) or (XII-b), R1 is —CH3.
In embodiments, R3 is hydrogen, halogen, substituted unsubstituted pyridyl, substituted or unsubstituted morphorinyl, substituted or unsubstituted phenyl, substituted or unsubstituted 2-6 membered heteroalkyl. In embodiments, R3 is hydrogen. In embodiments, R3 is a substituted unsubstituted pyridyl. In embodiments, R3 is a substituted or unsubstituted morphorinyl. In embodiments, R3 is a substituted or unsubstituted phenyl. In embodiments, R3 is a substituted or unsubstituted 2-6 membered heteroalkyl.
In embodiments, R3 is hydrogen, halogen,
In embodiments, each R10A, R10B and R10C is independently hydrogen, halogen, or —CH3. In embodiments, R10A is hydrogen, halogen, or —CH3. In embodiments, R10B is hydrogen, halogen, or —CH3. In embodiments, R10C is hydrogen, halogen, or —CH3.
In embodiments, R10A is hydrogen. In embodiments, R10B is hydrogen, —F, or —CH3. In embodiments, R10C is hydrogen, —F, or —CH3.
Exemplary compounds of Formula (III) or (XII) are shown in Table 2.
In embodiments, the compound has the structure of Formula (IV),
wherein:
Each R3, R4, and R5 is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl. R1, R2A, and R2B are as described herein.
In embodiments, the compound has the structure of Formula (XIII),
wherein:
In embodiments, when R1 is hydrogen, then R2A and R2B together with the nitrogen atom form a substituted or unsubstituted morphorinyl.
In embodiment, R3 is independently hydrogen, halogen, substituted or unsubstituted alkyl, substituted or unsubstituted phenyl. In embodiment, R4 is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted phenyl. In embodiment, R5 is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted phenyl.
In embodiments, in Formula (IV) or (XIII), R2A and R2B together with the nitrogen attached thereto form a
In embodiments, in Formula (IV) or (XIII), R2A and R2B together with the nitrogen attached thereto form a
R6, R7A, R7B, R7C, and R7D are as described herein.
In embodiments, W1 is a —N═. In embodiments, W1 is —CH═. In embodiments, W2 is a —N═. In embodiments, W2 is —CR4═. In embodiments, R4 is hydrogen.
In embodiments, the compound has the Formula (IV-a),
R1, R3, R4, and R5 are as described herein.
In embodiments, the compound has the Formula (XIII-a)
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, in Formula (IV-a), R4 and R8 are hydrogen, and R3 is —CH3,
In embodiments, in Formula (IV-a), R3, R4 and R8 are hydrogen or —CH3.
In embodiments, the compound has the Formula (IV-b),
R1, R3, R4, and R5 are as described herein.
In embodiments, the compound has the Formula (XIII-b),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, in Formula (IV-b) or (XIII-b), R3 and R8 are hydrogen, and R4 is hydrogen, and R4 is
In embodiments, the compound has the Formula (IV-c),
R1, and R3 are as described herein.
In embodiments, the compound has the Formula (XIII-c),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, the compound has the Formula (XIII-d), (XIII-e), or (XIII-f),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, in formula (IV-c) or (XIII-c), R4 and R5 are hydrogen, and R3 is
In embodiments, in formula (XIII-d), R4 and R5 are hydrogen, and R3 is
In embodiments, R4 and R5 are hydrogen, and R3 is —CH3,
In embodiments, R3, R4 and R5 are hydrogen. In embodiments, R3 is independently hydrogen, halogen, substituted or unsubstituted alkyl, or substituted or unsubstituted phenyl. In embodiments, R3 is —CH3.
In embodiments, R6 is —H,
In embodiments, R1 is —CH3.
In embodiments, each R10A, R10B and R10C is independently hydrogen, halogen, or —CH3. In embodiments, R10A is hydrogen, halogen, or —CH3. In embodiments, R10B is hydrogen, halogen, or —CH3. In embodiments, R10C is hydrogen, halogen, or —CH3.
In embodiments, R10A is hydrogen. In embodiments, R10B is hydrogen, —F, or —CH3. In embodiments, R10C is hydrogen, —F, or —CH3.
Exemplary compound of Formula (IV) or (XIII) are shown in Table 3.
In embodiments, the compound has the structure of Formula (V) or (VI),
wherein:
In embodiments, the compound has the structure of Formula (XIV) or (XV),
W3, R1, R3, R2A, R2B, R10A, R10B, and R10C are as described herein.
In embodiments, R3 is hydrogen. In embodiments, R3 is a substituted or unsubstituted C1-C4 alkyl. In embodiments, R3 is substituted or unsubstituted phenyl.
In embodiments, R2A and R2B together with the nitrogen attached thereto form a
In embodiments, R2A and R2B together with the nitrogen attached thereto form
R6, R7A, R7B, R7C, and R7D are as described herein.
In embodiments, the compound has the structure of Formula (V-a),
R1 and R3 are as described herein.
In embodiments, the compound has the structure of Formula (V-b),
R1 and R3 are as described herein.
In embodiments, the compound has the structure of Formula (VI-a),
R1 and R3 are as described herein.
In embodiments, the compound has the structure of Formula (VI-b),
R1 and R3 are as described herein.
In embodiments, the compound has the structure of Formula (XIV-a),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B, and R10C are as described herein.
In embodiments, the compound has the structure of Formula (XIV-b),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B and R10C are as described herein.
In embodiments, the compound has the structure of Formula (XV-a),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B and R10C are as described herein.
In embodiments, the compound has the structure of Formula (XV-b),
R1, R3, R7A, R7B, R7C, R7D, R10A, R10B and R10C are as described herein.
In embodiments, R3 is
In embodiments, R1 is —CH3.
In embodiments, each R10A, R10B and R10C is independently hydrogen, halogen, or —CH3. In embodiments, R10A is hydrogen, halogen, or —CH3. In embodiments, R10B is hydrogen, halogen, or —CH3. In embodiments, R10C is hydrogen, halogen, or —CH3.
Exemplary compounds of Formulae (V), (VI), (XIV) and (XV) are shown in Table 4.
In embodiments, the Ring A is bi-cyclic heteroaryl. In embodiments, the Ring A is selected from
wherein R8 is hydrogen, or substituted or unsubstituted alkyl; the Ring A is unsubstituted or substituted with one or more R3, and R3 is independently halogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl.
In embodiments, R8 is hydrogen. In embodiments, R8 is substituted or unsubstituted C1-3 alkyl. In embodiments, R8 is unsubstituted C1-3 alkyl. In embodiments, R8 is —CH3. In embodiments, R8 is —CF3. In embodiments, R8 is substituted or unsubstituted C1-3 alkyl.
In embodiments, when Ring A is unsubstituted
—N(R2AR2B) is not a substituted piperidinyl. In embodiments, when Ring A is unsubstituted
N(R2AR2B) is not a 4-substituted piperidinyl.
In embodiments, R2A and R2B together with the nitrogen attached thereto form
R6, R7A, R7B, R7C, and R7D are as described herein.
In embodiments, R6, R7A, R7B, R7C, and R7D are hydrogen.
In embodiments, R2A and R2B together with the nitrogen attached thereto form a
In embodiments, R2A and R2B together with the nitrogen attached thereto form
R6, R7A, R7B, R7C, and R7D are as described herein.
In embodiments, R3 is
In embodiments, R1 is —CH3.
In embodiments, each R10A, R10B and R10C is independently hydrogen, halogen, or —CH3. In embodiments, R10A is hydrogen, halogen, or —CH3. In embodiments, R10B is hydrogen, halogen, or —CH3. In embodiments, R10C is hydrogen, halogen, or —CH3.
Exemplary compounds having Ring A of bicyclic heteroaryl are shown in Table 5.
In an aspect, provided is a pharmaceutical composition including the compound described herein, a pharmaceutically acceptable salt form thereof, an isomer thereof, or a crystal form thereof. Also provided herein are pharmaceutical formulations. In embodiments, the pharmaceutical formulation includes a compound (e.g. formulae (I), (II), (III), (IV), (V), (X), (XI), (XII), (XIII), (XIV), (XV) and subordinate formulae thereof) including all embodiments thereof, or compounds in Tables 1-5 described above) and a pharmaceutically acceptable excipient.
The pharmaceutical composition may contain a dosage of the compound in a therapeutically effective amount.
In embodiments, the pharmaceutical composition includes any compound described above.
1. Formulations
The pharmaceutical composition may be prepared and administered in a wide variety of dosage formulations. Compounds described may be administered orally, rectally, or by injection (e.g. intravenously, intramuscularly, intracutaneously, subcutaneously, intraduodenally, or intraperitoneally).
For preparing pharmaceutical compositions from compounds described herein, pharmaceutically acceptable carriers can be either solid or liquid. Solid form preparations include powders, tablets, pills, capsules, cachets, suppositories, and dispersible granules. A solid carrier may be one or more substance that may also act as diluents, flavoring agents, binders, preservatives, tablet disintegrating agents, or an encapsulating material.
In powders, the carrier may be a finely divided solid in a mixture with the finely divided active component. In tablets, the active component may be mixed with the carrier having the necessary binding properties in suitable proportions and compacted in the shape and size desired.
The powders and tablets preferably contain from 5% to 70% of the active compound. Suitable carriers are magnesium carbonate, magnesium stearate, talc, sugar, lactose, pectin, dextrin, starch, gelatin, tragacanth, methylcellulose, sodium carboxymethylcellulose, a low melting wax, cocoa butter, and the like. The term “preparation” is intended to include the formulation of the active compound with encapsulating material as a carrier providing a capsule in which the active component with or without other carriers, is surrounded by a carrier, which is thus in association with it. Similarly, cachets and lozenges are included. Tablets, powders, capsules, pills, cachets, and lozenges can be used as solid dosage forms suitable for oral administration.
For preparing suppositories, a low melting wax, such as a mixture of fatty acid glycerides or cocoa butter, is first melted and the active component is dispersed homogeneously therein, as by stirring. The molten homogeneous mixture is then poured into convenient sized molds, allowed to cool, and thereby to solidify.
Liquid form preparations include solutions, suspensions, and emulsions, for example, water or water/propylene glycol solutions. For parenteral injection, liquid preparations can be formulated in solution in aqueous polyethylene glycol solution.
Aqueous solutions suitable for oral use can be prepared by dissolving the active component in water and adding suitable colorants, flavors, stabilizers, and thickening agents as desired. Aqueous suspensions suitable for oral use can be made by dispersing the finely divided active component in water with viscous material, such as natural or synthetic gums, resins, methylcellulose, sodium carboxymethylcellulose, and other well-known suspending agents.
Also included are solid form preparations that are intended to be converted, shortly before use, to liquid form preparations for oral administration. Such liquid forms include solutions, suspensions, and emulsions. These preparations may contain, in addition to the active component, colorants, flavors, stabilizers, buffers, artificial and natural sweeteners, dispersants, thickeners, solubilizing agents, and the like.
The pharmaceutical preparation is preferably in unit dosage form. In such form the preparation is subdivided into unit doses containing appropriate quantities of the active component. The unit dosage form can be a packaged preparation, the package containing discrete quantities of preparation, such as packeted tablets, capsules, and powders in vials or ampoules. Also, the unit dosage form can be a capsule, tablet, cachet, or lozenge itself, or it can be the appropriate number of any of these in packaged form.
The quantity of active component in a unit dose preparation may be varied or adjusted from 0.1 mg to 10000 mg according to the particular application and the potency of the active component. The composition can, if desired, also contain other compatible therapeutic agents.
Some compounds may have limited solubility in water and therefore may require a surfactant or other appropriate co-solvent in the composition. Such co-solvents include: Polysorbate 20, 60, and 80; Pluronic F-68, F-84, and P-103; cyclodextrin; and polyoxyl 35 castor oil. Such co-solvents are typically employed at a level between about 0.01% and about 2% by weight. Viscosity greater than that of simple aqueous solutions may be desirable to decrease variability in dispensing the formulations, to decrease physical separation of components of a suspension or emulsion of formulation, and/or otherwise to improve the formulation. Such viscosity building agents include, for example, polyvinyl alcohol, polyvinyl pyrrolidone, methyl cellulose, hydroxy propyl methylcellulose, hydroxyethyl cellulose, carboxymethyl cellulose, hydroxy propyl cellulose, chondroitin sulfate and salts thereof, hyaluronic acid and salts thereof, and combinations of the foregoing. Such agents are typically employed at a level between about 0.01% and about 2% by weight.
The pharmaceutical compositions may additionally include components to provide sustained release and/or comfort. Such components include high molecular weight, anionic mucomimetic polymers, gelling polysaccharides, and finely-divided drug carrier substrates. These components are discussed in greater detail in U.S. Pat. Nos. 4,911,920; 5,403,841; 5,212,162; and 4,861,760. The entire contents of these patents are incorporated herein by reference in their entirety for all purposes.
The pharmaceutical composition may be intended for intravenous use. The pharmaceutically acceptable excipient can include buffers to adjust the pH to a desirable range for intravenous use. Many buffers including salts of inorganic acids such as phosphate, borate, and sulfate are known.
2. Effective Dosages
The pharmaceutical composition may include compositions wherein the active ingredient is contained in a therapeutically effective amount, i.e., in an amount effective to achieve its intended purpose. The actual amount effective for a particular application will depend, inter alia, on the condition being treated.
The dosage and frequency (single or multiple doses) of compounds administered can vary depending upon a variety of factors, including route of administration; size, age, sex, health, body weight, body mass index, and diet of the recipient; nature and extent of symptoms of the disease being treated; presence of other diseases or other health-related problems; kind of concurrent treatment; and complications from any disease or treatment regimen. Other therapeutic regimens or agents can be used in conjunction with the methods and compounds disclosed herein.
Therapeutically effective amounts for use in humans may be determined from animal models. For example, a dose for humans can be formulated to achieve a concentration that has been found to be effective in animals. The dosage in humans can be adjusted by monitoring response of the constipation or dry eye to the treatment and adjusting the dosage upwards or downwards, as described above.
Dosages may be varied depending upon the requirements of the subject and the compound being employed. The dose administered to a subject, in the context of the pharmaceutical compositions presented herein, should be sufficient to effect a beneficial therapeutic response in the subject over time. The size of the dose also will be determined by the existence, nature, and extent of any adverse side effects. Generally, treatment is initiated with smaller dosages, which are less than the optimum dose of the compound. Thereafter, the dosage is increased by small increments until the optimum effect under circumstances is reached.
Dosage amounts and intervals can be adjusted individually to provide levels of the administered compounds effective for the particular clinical indication being treated. This will provide a therapeutic regimen that is commensurate with the severity of the individual's disease state.
Utilizing the teachings provided herein, an effective prophylactic or therapeutic treatment regimen can be planned that does not cause substantial toxicity and yet is entirely effective to treat the clinical symptoms demonstrated by the particular patient. This planning should involve the careful choice of active compound by considering factors such as compound potency, relative bioavailability, patient body weight, presence and severity of adverse side effects, preferred mode of administration, and the toxicity profile of the selected agent.
3. Toxicity
The ratio between toxicity and therapeutic effect for a particular compound is its therapeutic index and can be expressed as the ratio between LD50 (the amount of compound lethal in 50% of the population) and ED50 (the amount of compound effective in 50% of the population). Compounds that exhibit high therapeutic indices are preferred. Therapeutic index data obtained from cell culture assays and/or animal studies can be used in formulating a range of dosages for use in humans. The dosage of such compounds preferably lies within a range of plasma concentrations that include the ED50 with little or no toxicity. The dosage may vary within this range depending upon the dosage form employed and the route of administration utilized. See, e.g. Fingl et al., In: THE PHARMACOLOGICAL BASIS OF THERAPEUTICS, Ch. 1, p. 1, 1975. The exact formulation, route of administration, and dosage can be chosen by the individual physician in view of the patient's condition and the particular method in which the compound is used.
When parenteral application is needed or desired, particularly suitable admixtures for the compounds included in the pharmaceutical composition may be injectable, sterile solutions, oily or aqueous solutions, as well as suspensions, emulsions, or implants, including suppositories. In particular, carriers for parenteral administration include aqueous solutions of dextrose, saline, pure water, ethanol, glycerol, propylene glycol, peanut oil, sesame oil, polyoxyethylene-block polymers, and the like. Ampoules are convenient unit dosages. Pharmaceutical admixtures suitable for use in the pharmaceutical compositions presented herein may include those described, for example, in Pharmaceutical Sciences (17th Ed., Mack Pub. Co., Easton, PA) and WO 96/05309, the teachings of both of which are hereby incorporated by reference.
In an aspect, provided is a method for inhibiting NAD consumption and/or increasing NAD synthesis in a patient, and the method includes administering to the patient an effective dose of a compound (e.g. formulae (I), (II), (III), (IV), (V), (X), (XI), (XII), (XIII), (XIV), (XV) and subordinate formulae thereof) including all embodiments thereof, or compounds in Tables 1-5) described above.
The compound can inhibit NAD consuming reactions such as protein ADP-ribosylation reactions. The compound can inhibit NAD cleavage by protein deacetylases or NAD hydrolases. The compound can increase NAD synthesis. The compound can activate enzymes of the NAD synthetic pathways such as the rate-limiting enzyme for NAD synthesis in the salvage pathway called NAMPT. The patient is afflicted with, or at risk for, a protein misfolding neurodegenerative disease or another protein misfolding disease.
The protein misfolding neurodegenerative disease includes a prion disease, Parkinson's disease, dementia with Lewy Bodies, multiple system atrophy or other synucleinopathies, Alzheimer's disease, amyotrophic lateral sclerosis, fronto-temporal dementia or other tauopathy, chronic traumatic encephalopathy, and the protein misfolding disease includes diabetes mellitus and amyloidoses.
In an aspect, provided is a method for preventing or inhibiting NAD depletion in a patient. In another aspect, provided is a method for increasing NAD levels to improve cellular function. In another aspect, provided is a method for improving a condition linked to alterations of NAD metabolism in a patient. The method includes administering to the patient an effective dose of the compound described herein.
The condition includes a metabolic disorder, a liver disorder, aging, a degenerative disease, a neurodegenerative disease, neuronal degeneration associated with multiple sclerosis, hearing loss, multiple sclerosis, retinal damage, macular degeneration, brain or cardiac ischemia, kidney failure, kidney disease, traumatic brain injury, or an axonopathy.
In an aspect, provided is a method for providing protection from toxicity of misfolded proteins in a patient. The method includes administering to the patient an effective dose of the compound described herein. The patient is afflicted with a prion disease, Parkinson's disease or other synucleinopathy, Alzheimer's disease, amyotrophic lateral sclerosis, a tauopathy, an amyloidosis or diabetes mellitus.
In an aspect, provided is a method for preventing or treating a protein misfolding neurodegenerative disease in a patient. The method includes administering to the patient an effective dose of the compound described herein.
In embodiments, the protein misfolding neurodegenerative disease is a disorder associated with protein aggregate-induced neurodegeneration and NAD depletion. In embodiments, the protein misfolding neurodegenerative disease includes a prion disease, Parkinson's disease, dementia with Lewy Bodies, multiple system atrophy or other synucleinopathy, Alzheimer's disease, amyotrophic lateral sclerosis, fronto-temporal dementia or other tauopathy, chronic traumatic encephalopathy. In embodiments, the neurodegenerative disease is multiple sclerosis, brain ischemia or an axonopathy.
In embodiments, the metabolic disorder includes diabetes or a liver disorder.
In embodiments, the condition linked to alterations of NAD metabolism includes aging, a retinal disease or a kidney disease.
In an aspect, provided is a method of preventing or treating a retinal disease in a patient. The method includes administering to the patient an effective dose of the compound described herein.
In an aspect, provided is a method of preventing or treating diabetes, non alcoholic fatty liver disease or other metabolic disease in a patient, comprising administering to the patient an effective dose of the compound described herein.
In an aspect, provided is a method of preventing or treating a kidney disease in a patient, comprising administering to the patient an effective dose of the compound described herein.
In an aspect, provided is a method of mitigating health effects of aging, comprising administering to the patient an effective dose of the compound described herein.
General Protocols. Materials were purchased from commercial vendors and used without purification. All moisture-sensitive reactions were performed under argon. Experiments were monitored by LCMS or TLC and visualized using an ultraviolet lamp (254 nm) or staining with KMnO4. Purification via silica gel flash column chromatography was performed using a Teledyne ISCO Combiflash® Rf+ and Luknova silica gel cartridges. Purification via preparatory HPLC was performed on either an Agilent 1260 Infinity II series or a Shimadzu LC-8A instrument each using a Prep-C18 column (250×30 mm) with a flow rate of 30 mL/min, UV detection at 254, 280, and/or 210 nm, and reverse phase solvent system (A=0.1% TFA in de-ionized water and B=1:1 ACN/MeOH). All NMR data was collected at room temperature on a Bruker Ultrashield 400 MHz nuclear magnetic resonance spectrometer. Chemical shifts for 1H NMR spectra are reported in parts per million (ppm) relative to residual solvent signal as an internal standard: DMSO (δ 2.50), CHCl3 (δ 7.26), or MeOH (δ 3.31). Multiplicities are given as: s (singlet), d (doublet), t (triplet), q (quartet), or m (multiplet). Coupling constants are reported as a J value in Hertz (Hz). Mass spectra were recorded on a Thermo Scientific 3000 LCQ Fleet system (ESI) using a Discovery® HS C18 HPLC column (10 cm×2.1 mm, 5 μm) at 35° C. with UV detection at 254 nm. Flow rate was 0.7 mL/min using a solvent gradient of 5-95% B over 4 min (total run time=6 min), where A=0.1% formic acid in de-ionized water and B=0.1% formic acid in ACN. All compounds were dissolved in 100% DMSO as 10 mM stocks.
Abbreviations. Certain abbreviations for common chemicals were used in the Examples and are defined as follows:
Reaction Schemes. Compounds of the invention are synthesized as shown in the following general reaction schemes, representative schematic examples, and experimental details as provided in the Examples.
A mixture of 5-bromo-2-methylbenzene sulfonyl chloride (320 mg, 1.2 mmol), NaHCO3 (1 g, 12 mmol), and morpholine (123 μL, 1.4 mmol) in DCM was stirred overnight at room temperature. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded product 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (380 mg, 100%).
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (50 mg, 0.16 mmol), K2CO3 (65 mg, 0.47 mmol), de-ionized water (400 μL), and 2-chloro-pyridine-4-boronic acid (29 mg, 0.18 mmol) in 1,4-dioxane (1.6 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (9 mg, 0.008 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 2 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((5-(2-Chloropyridin-4-yl)-2-methylphenyl)sulfonyl)morpholine (45 mg, 82% yield). 1H NMR (CDCl3) δ 8.45 (d, J=5.2 Hz, 1H), 8.14 (d, J=2.0 Hz, 1H), 7.73 (dd, J=7.6, 2.0 Hz, 1H), 7.54 (t, J=0.6 Hz, 1H), 7.48 (d, J=8.0 Hz, 1H), 3.73 (t, J=4.8 Hz, 4H), 3.18 (t, J=4.8 Hz, 4H), 2.69 (s, 3H); MS (m/z): [M] calc'd for C16H17ClN2O3S is 352.06. found 352.96 [M+H].
A mixture of 4-((5-(2-Chloropyridin-4-yl)-2-methylphenyl)sulfonyl)morpholine (23 mg, 0.06 mmol), CsF (50 mg, 0.3 mmol), and ethylenediamine (250 μL, 3.7 mmol) in 1,4-dioxane (250 μL) was stirred at 120° C. for 40 h and then was cooled to room temperature. Upon completion, solvent and excess ethylenediamine were removed under reduced pressure to afford N-(4-(4-methyl-3-(morpholinosulfonyl)phenyl)pyridin-2-yl)ethane-1,2-diamine (30 mg). MS (m/z): [M] calc'd for C18H24N4O3S is 376.16. found 376.95.
Then, a mixture of the crude product (30 mg) and NaHCO3 (67 mg, 0.8 mmol) in DCM was cooled in an ice-water bath. Acetyl chloride (5.1 μL, 0.07 mmol) in DCM was added dropwise and the reaction mixture was stirred for 2 hours in the ice-water bath. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-25104 (16 mg, 48% yield). 1H NMR (CD3OD) δ 8.16 (d, J=2.0 Hz, 1H), 7.59 (d, J=6.0 Hz, 1H), 7.91 (dd, J=8.0, 2.0 Hz, 1H), 7.59 (d, J=8.0 Hz, 1H), 7.06-7.03 (m, 2H), 3.70 (t, J=4.6 Hz, 4H), 3.53 (t, J=6.0 Hz, 2H), 3.43 (t, J=6.0 Hz, 2H), 3.16 (t, J=4.8 Hz, 4H), 2.70 (s, 3H), 1.96 (s, 3H); MS (m/z): [M] calc'd for C20H26N4O4S is 418.17 [M]. found 418.95 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (25 mg, 0.08 mmol), Cs2CO3 (51 mg, 0.16 mmol), xantphos (1.3 mg, 0.002 mmol), and 4-(aminomethyl)pyridine (16 μL, 0.16 mmol) in 1,4-dioxane (800 μL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd2(dba)3 (1.8 mg, 0.002 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 90° C. for 2 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-25464 (17 mg, 63% yield). 1H NMR (CD3OD) δ 8.77, (s, 1H), 8.06 (d, J=5.6 Hz, 2H), 7.15 (d, J=8.4 Hz, 1H), 7.02 (d, J=2.4 Hz, 1H), 6.77 (dd, J=8.2, 2.6 Hz, 1H), 4.72 (s, 2H), 3.65 (t, J=4.8 Hz, 4H), 3.00 (t, J=4.8 Hz, 4H), 2.45 (s, 3H); MS (m/z): [M] calc'd for C17H21N3O3S is 347.13. found 348.01 [M+H].
A mixture of 4-((5-(2-Chloropyridin-4-yl)-2-methylphenyl)sulfonyl)morpholine (30 mg, 0.09 mmol), CsF (65 mg, 0.43 mmol), and N,N′-dimethylethylenediamine (55 μL, 5.1 mmol) was microwaved in a Biotage© microwave reactor at 120° C. for 13 hours under high absorption conditions. Upon completion, excess N,N′-dimethylethylenediamine was removed under reduced pressure to afford N1,N2-dimethyl-N1-(4-(4-methyl-3-(morpholinosulfonyl)phenyl)pyridin-2-yl)ethane-1,2-diamine (33 mg). MS (m/z): [M] calc'd for C20H28N4O3S is 404.19. found 404.93 [M+H].
Then, a mixture of the crude product (33 mg) and NaHCO3 (71 mg, 0.8 mmol) in DCM was cooled in an ice-water bath. Acetyl chloride (4.8 μL, 0.07 mmol) in DCM was added dropwise and the reaction mixture was stirred for 2 hours in the ice-water bath. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product SR-25124 (28 mg, 77% yield). 1H NMR (CD3OD) δ 8.61 (d, J=5.6 Hz, 1H), 8.23 (d, J=2.0 Hz, 1H), 7.99 (dd, J=8.0, 2.0 Hz, 1H), 7.86 (d, J=1.2 Hz, 1H), 7.73 (dd, J=5.2, 1.2 Hz, 1H), 7.62 (d, J=8.0 Hz, 1H), 4.06 (t, J=6.8 Hz, 2H), 3.70 (t, J=4.8 Hz, 4H), 3.17 (t, J=4.8 Hz, 4H), 2.74 (t, J=6.8 Hz, 2H), 2.71 (s, 3H), 2.42 (s, 6H), 2.04 (s, 3H); MS (m/z): [M] calc'd for C22H30N4O4S is 446.20. found 446.97 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (25 mg, 0.08 mmol), K2CO3 (54 mg, 0.39 mmol), and 1,3,5-trimethyl-1H-pyrazole-4-boronic acid pinacol ester (20 mg, 0.14 mmol) in DME/de-ionized water (1:1, 1.4 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (9 mg, 0.008 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage® microwave reactor at 100° C. for 5 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-25584 (24 mg, 88% yield). 1H NMR (CD3OD) δ 7.58 (d, J=1.2 Hz, 1H), 7.52-7.46 (m, 2H), 3.84 (s, 3H), 3.69 (t, J=4.6 Hz, 4H), 3.13 (t, J=4.8 Hz, 4H), 2.66 (s, 3H), 2.30 (s, 3H), 2.25 (s, 3H); MS (m/z): [M] calc'd for C17H23N3O3S is 349.15. found 349.91.
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (41 mg, 0.13 mmol), K2CO3 (35 mg, 0.25 mmol), and 1-(tetrahydro-2H-pyran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (43 mg, 0.15 mmol) in 1,4-dioxane/de-ionized water (4:1, 1.3 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (7.4 mg, 0.006 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was stirred at 80° C. in a pre-heated oil bath for 2 hours. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded product 4-((2-methyl-5-(1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (82 mg). MS (m/z): [M] calc'd for C19H25N3O4S is 391.16. found 391.43 [M+H].
Then, a mixture of the product (82 mg) and HCl (41 μL, 0.5 mmol) in MeOH was heated to 50° C. overnight. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product 4-((2-methyl-5-(1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (35 mg, 89% yield over 2 steps). MS (m/z): [M] calc'd for C14H17N3O3S is 307.10. found 307.77 [M+H].
A mixture of 4-((2-methyl-5-(1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (60 mg, 0.2 mmol), pyridine (46 μL, 0.57 mmol), and methanesulfonyl chloride (30 μL, 0.39 mmol) in DCM was stirred overnight at room temperature. Upon completion, solvent and excess pyridine were removed under reduced pressure and purification via column chromatography afforded pure product 4-((2-methyl-5-(1-(methylsulfonyl)-1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (70 mg, 88% yield). MS (m/z): [M] calc'd for C15H19N3O5S2 is 385.08. found 385.78 [M+H].
A mixture of 4-((2-methyl-5-(1-(methylsulfonyl)-1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (60 mg, 0.16 mmol), tert-butyl-4-(2-hydroxyethyl)piperazine-1-carboxylate (30 mg, 0.13 mmol), and sodium tert-butoxide (15 mg, 0.16 mmol) in DMF was stirred at 90° C. overnight. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded product tert-butyl 4-(2-(4-(4-methyl-3-(morpholinosulfonyl)phenyl)-1H-pyrazol-1-yl)ethyl)piperazine-1-carboxylate (50 mg). MS (m/z): [M] calc'd for C25H37N5O5S is 519.25. found 519.78 [M+H].
Then, a mixture of the product (50 mg) and TFA/DCM (1:1) was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure to yield the crude product 4-((2-methyl-5-(1-(2-(piperazin-1-yl)ethyl)-1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine as a TFA salt (50 mg). MS (m/z): [M] calc'd for C20H29N5O3S is 419.20. found 419.99 [M+H].
Lastly, a mixture of the crude product (50 mg), NaHCO3 (162 mg, 1.9 mmol), and acetyl chloride (13.8 μL, 0.19 mmol) in DCM was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product SR-25484 (14 mg, 19% yield over 3 steps). 1H NMR (CD3OD) δ 8.04 (s, 1H), 7.89 (d, J=1.6 Hz, 1H), 7.78 (s, 1H), 7.63 (dd, J=8.0, 1.6 Hz, 1H, 7.31 (d, J=8.0 Hz, 1H), 4.24 (t, J=6.2 Hz, 2H), 3.59 (t, J=4.6 Hz, 4H), 3.46-3.41 (m, 4H), 3.03 (t, J=4.6 Hz, 4H), 2.80 (t, J=6.0 Hz, 2H), 2.51 (s, 3H), 2.47-2.41 (m, 4H), 1.97 (s, 3H); MS (m/z): [M] calc'd for C22H31N5O4S is 461.21. found 462.03 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (50 mg, 0.16 mmol), dppf (4.8 mg, 0.009 mmol), de-ionized water (31 μL), and Zn(CN)2 (18 mg, 0.15 mmol) in DMF (3.1 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd2(dba)3 (3.1 mg, 0.003 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 115° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-methyl-3-(morpholinosulfonyl)benzonitrile (35 mg, 84% yield).
Then, a mixture of the product (35 mg, 0.13 mmol), K2CO3 (37 mg, 0.27 mmol), and benzhydrazide (18 mg, 0.13 mmol) in 1-BuOH (131 μL) was stirred at 120° C. in a pre-heated oil bath for 4 hours. Upon completion, solvent was removed under reduced pressure and purification via column chromatography followed by prep HPLC afforded pure product SR-25604 (16 mg, 24% yield). 1H NMR (CD3OD) δ 8.61 (d, J=1.6 Hz, 1H), 8.25 (dd, J=8.0, 2.0 Hz, 1H), 8.06 (dd, J=7.8, 1.8 Hz, 2H), 7.59-7.53 (m, 4H), 3.72 (t, J=4.6 Hz, 4H), 3.20 (t, J=4.8 Hz, 4H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C19H20N4O3S is 384.13, found 384.96 [M+H].
A mixture of 4-boc-aminopiperidine (500 mg, 2.5 mmol), 2-bromoethanol (375 mg, 3.0 mmol), and K2CO3 (1.1 g, 8 mmol) in ACN was stirred overnight at 50° C. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded product tert-butyl (1-(2-hydroxyethyl)piperidin-4-yl)carbamate.
Then, a mixture of the product (63 mg, 0.26 mmol) with 4-((2-methyl-5-(1-(methylsulfonyl)-1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (70 mg, 0.18 mmol) and sodium tert-butoxide (20 mg, 0.21 mmol) in DMF (0.61 mL) was stirred overnight at 90° C. in a pre-heated oil bath. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product tert-butyl (1-(2-(4-(4-methyl-3-(morpholinosulfonyl)phenyl)-1H-pyrazol-1-yl)ethyl)piperidin-4-yl)carbamate (70 mg, 72% yield). MS (m/z): [M] calc'd for C26H39N5O5S is 533.27. found 533.97 [M+H].
Then, a mixture of the product (70 mg) and TFA/DCM (1:1) was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure to yield the crude product 1-(2-(4-(4-methyl-3-(morpholinosulfonyl)phenyl)-1H-pyrazol-1-yl)ethyl)piperidin-4-amine as a TFA salt (72 mg). MS (m/z): [M] calc'd for C21H31N5O3S is 433.21. found 434.06 [M+H].
Lastly, a mixture of the crude product (72 mg), NaHCO3 (880 mg, 10.5 mmol), and acetyl chloride (76 μL, 1.1 mmol) in DCM was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product SR-25864 (28 mg, 45% yield over 2 steps). 1H NMR (CD3OD) δ 8.13 (s, 1H), 7.99 (d, J=2.0 Hz, 1H), 7.89, d, J=0.4 Hz, 1H), 7.73 (dd, J=7.6, 2.0 Hz, 1H), 7.41 (d, J=8.0 Hz, 1H), 4.39 (t, J=6.6 Hz, 2H), 3.69 (t, J=4.8 Hz, 5H), 3.13 (t, J=4.8 Hz, 4H), 3.05 (q, J=6.4 Hz, 4H), 2.61 (s, 3H), 2.45 (t, J=10.8 Hz, 2H), 1.96-1.89 (m, 6H), 1.58 (qd, J=5.6, 3.4 Hz, 2H); MS (m/z): [M] calc'd for C23H33N5O4S is 475.23. found 475.97 [M+H].
This compound was prepared according to the procedure for SR-25604 in 35% overall yield starting from 4-bromo-2-chlorobenzene sulfonyl chloride. 1H NMR ((CD3)2SO) δ 8.30 (s, 1H), 8.23 (dd, J=8.4, 1.6 Hz, 1H), 8.12-8.08 (m, 3H), 7.58-7.56 (m, 3H), 3.63 (t, J=4.6 Hz, 4H), 3.20 (t, J=4.6 Hz, 4H); MS (m/z): [M] calc'd for C18H17ClN4O3S is 404.07. found 404.93 [M+H].
This compound was prepared according to the procedure for SR-25604 in 31% overall yield starting from 4-bromo-2-(trifluoromethyl)benzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.77 (s, 1H), 8.60 (d, J=8.0 Hz, 1H), 8.29 (d, J=8.4 Hz, 1H), 8.12-8.11 (m, 2H), 7.61 (d, J=5.6 Hz, 3H), 3.77 (t, J=4.4 Hz, 4H), 3.31 (t, J=4.4 Hz, 4H); MS (m/z): [M] calc'd for C19H17F3N4O3S is 438.10. found 438.95 [M+H].
A mixture of 2-acetylbenzoic acid (500 mg, 3.0 mmol), K2CO3 (700 mg, 5.1 mmol), MeI (700 μL, 11.2 mmol) in DMF stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product methyl 2-acetylbenzoate (526 mg, 97% yield). MS (m/z): [M] calc'd for C10H10O3 is 178.06. found 178.58 [M+H].
Then, a mixture of the product (526 mg, 3.0 mmol) and hydrazine monohydrate (207 μL, 4.4 mmol) in EtOH stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-methylphthalazin-1(2H)-one (163 mg, 34% yield). MS (m/z): [M] calc'd for C9H8N2O is 160.06. found 160.77 [M+H].
Lastly, a mixture of the product (163 mg, 1.0 mmol) and POBr3 (583 mg, 2.0 mmol) was stirred 4 hours at 120° C. in a pre-heated oil bath and then was poured on ice. The mixture was basified with NH4OH(aq) and the solid precipitate was collected by filtration to 1-bromo-4-methyl-phthalazine (217 mg, 96% yield). MS (m/z): [M] calc'd for C9H9BrN2 is 221.98/223.98. found 222.86/224.86 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (50 mg, 0.16 mmol), KOAc (60 mg, 0.61 mmol), bis(pinacolato)diboron (45 mg, 0.18 mmol) in 1,4-dioxane (1.6 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(dppf)Cl2·CH2Cl2 (12 mg, 0.018 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)sulfonyl)morpholine (51 mg, 89% yield). MS (m/z): [M] calc'd for C17H26BNO5S is 367.16. found 367.86 [M+H].
Then, a mixture of the product (51 mg, 0.14 mmol), Na2CO3(aq) (208 μL, 2M, 0.42 mmol), and 1-bromo-4-methyl-phthalazine (37 mg, 0.17 mmol) in DME (1.4 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(dppf)Cl2·CH2Cl2 (8.4 mg, 0.011 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 110° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-26424 (8 mg, 15% yield). 1H NMR (CD3OD) δ 8.39 (d, J=8.0 Hz, 1H), 8.19 (d, J=1.6 Hz, 1H), 8.12-8.08 (m, 1H), 8.03-8.01 (m, 2H), 7.90 (dd, J=7.8, 1.8 Hz, 1H), 7.69 (d, J=8.0 Hz, 1H), 3.71 (t, J=4.6 Hz, 4H), 3.20 (t, J=4.6 Hz, 4H), 3.06 (s, 3H), 2.78 (s, 3H); MS (m/z): [M] calc'd for C20H21N3O3S is 383.13. found 382.17 [M+H].
A mixture of 4-methyl-3-(morpholinosulfonyl)benzonitrile (51 mg, 0.19 mmol), 2-aminopyridine (22 mg, 0.23 mmol), CuI (1.8 mg, 0.009 mmol), ZnBr2 (4.3 mg, 0.02 mmol), and 1,10-phenanthroline (1.7 mg, 0.009 mmol) in 1,2-dichlorobenzene (383 μL) was stirred at 130° C. in a pre-heated oil bath for 24 hours. Upon completion, solvent was removed under reduced pressure and purification via column chromatography followed by prep HPLC afforded pure product SR-26524 (4 mg, 5.8% yield). 1H NMR (CD3OD) δ 8.83 (dd, J=6.8, 1.2 Hz, 1H) 8.74 (d, J=1.6 Hz, 1H), 8.38 (dd, J=8.0, 2.0 Hz, 1H), 7.80 (dd, J=8.8, 1.2 Hz, 1H), 7.75-7.71 (m, 1H), 7.61 (d, J=8.0 Hz, 1H), 7.26-7.22 (m, 1H), 3.72 (t, J=4.8 Hz, 4H), 3.20 (t, J=4.6 Hz, 4H), 2.72 (s, 3H); MS (m/z): [M] calc'd for C17H18N4O3S is 358.11. found 358.98 [M+H].
This compound was prepared according to the procedure for SR-25604 in 25% overall yield starting from 5-bromo-2-chlorobenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.76 (s, 1H), 8.55 (d, J=7.6 Hz, 1H), 8.14 (d, J=8.0 Hz, 1H), 8.06-8.05 (m, 2H), 7.57-7.56 (m, 3H), 3.75 (t, J=4.6 Hz, 4H), 3.26 (t, J=4.4H, 4H); MS (m/z): [M] calc'd for C19H17N5O3S is 395.11. found 395.91 [M+H].
This compound was prepared according to the procedure for SR-25604 in 18% overall yield starting from 5-bromo-2-methoxybenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.57 (d, J=2.0 Hz, 1H), 8.34 (dd, J=8.6, 2.2 Hz, 2H), 8.06 (dd, J=7.8, 1.8 Hz, 2H), 7.54-7.52 (m, 3H), 7.40 (d, J=8.4 Hz, 1H), 4.03 (s, 3H), 3.70 (t, J=4.6 Hz, 4H), 3.25 (t, J=4.8 Hz, 4H); MS (m/z): [M] calc'd for C19H20N4O4S is 400.12. found 400.93 [M+H].
This compound was prepared according to the procedure for SR-25604 in 11% overall yield starting from 5-bromo-2-chlorobenzene sulfonyl chloride and using Pd(PPh3)4 for the cyanation rather than Pd2(dba)3. 1H NMR (CD3OD) δ 8.76 (d, J=2.4 Hz, 1H), 8.33 (dd, J=8.2, 2.2 Hz, 1H), 8.05 (dd, J=7.6, 2.0 Hz, 2H), 7.78 (d, J=8.4 Hz, 1H), 7.58-7.53 (m, 3H), 3.71 (t, J=4.6 Hz, 4H), 3.31 (t, J=4.8 Hz, 4H); MS (m/z): [M] calc'd for C18H17ClN4O3S is 404.07. found 405.04 [M+H].
This compound was prepared according to the procedure for SR-26424 but with 3-bromoimidazo[1,2-a]pyridine in 49% overall yield starting from 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine. 1H NMR (CD3OD) δ 8.72 (d, J=6.8 Hz, 1H), 8.27 (s, 1H), 8.20 (d, J=2.0 Hz, 1H), 8.07-8.01 (m, 2H), 7.93 (dd, J=7.6, 2.0 Hz, 1H), 7.73 (d, J=8.0 Hz, 1H), 7.54 (td, J=6.0, 2.2 Hz, 1H), 3.72 (t, J=4.8 Hz, 4H), 3.20 (t, J=4.8 Hz, 4H), 2.77 (s, 3H); MS (m/z): [M] calc'd for C18H19N3O3S is 357.11 found 357.96 [M+H].
This compound was prepared according to the procedure for SR-26424 but with tert-butyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole-1-carboxylate in 20% overall yield starting from 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine. 1H NMR (CD3OD) δ 8.20 (d, J=2.0 Hz, 1H), 8.14 (s, 1H), 7.92 (dd, J=7.8, 1.8 Hz, 1H), 7.59 (d, J=8.0 Hz, 2H), 7.49 (dd, J=8.4, 1.2 Hz, 1H), 7.28 (dd, J=6.8, 0.8 Hz, 1H), 3.71 (t, J=4.8 Hz, 4H), 3.17 (t, J=4.6 Hz, 4H), 2.72 (s, 3H); MS (m/z): [M] calc'd for C18H19N3O3S is 357.11 found 357.85 [M+H].
This compound was prepared according to the procedure for SR-26424 but with 2-bromo-5-phenyl-1,3,4-thiadiazole in 33% overall yield starting from 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine. 1H NMR (CDCl3) δ 8.46 (d, J=1.6 Hz, 1H), 8.17 (dd, J=8.0, 2.0 Hz, 1H), 8.03-8.00 (m, 2H), 7.53-7.48 (m, 4H), 3.76 (t, J=4.8 Hz, 4H), 3.24 (t, J=4.8 Hz, 4H), 2.72 (s, 3H); MS (m/z): [M] calc'd for C19H19N3O3S2 is 401.09 found 402.02 [M+H].
This compound was prepared according to the procedure for SR-26424 but with 2-bromo-5-phenyl-1,3,4-oxadiazole in 60% overall yield starting from 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine. 1H NMR (CD3OD) δ 8.60 (s, 1H), 8.29 (d, J=8.0 Hz, 1H), 8.16 (d, J=7.2 Hz, 2H), 7.68 (d, J=8.4 Hz, 1H), 7.65-7.60 (m, 3H), 3.72 (t, J=4.6 Hz, 4H), 3.21 (t, J=4.4 Hz, 4H), 2.74 (s, 3H); MS (m/z): [M] calc'd for C19H19N3O4S is 385.11 found 386.01 [M+H].
A mixture of 4-((2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)sulfonyl)morpholine (57 mg, 0.16 mmol), K2CO3 (54 mg, 0.39 mmol), and 3-bromoindazole (25 mg, 0.13 mmol) in DME/de-ionized water (1:1, 1.3 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (7.3 mg, 0.006 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 100° C. for 5 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-27564 as a TFA salt (25 mg, 34% yield starting from 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine). 1H NMR (CD3OD) δ 8.47 (d, J=1.6 Hz, 1H), 8.16 (dd, J=8.0, 2.0 Hz, 1H), 8.01 (d, J=8.4 Hz, 1H), 7.59 (dd, J=8.2, 2.6 Hz, 2H), 7.45 (td, J=7.6, 0.8 Hz, 1H), 7.26 (td, J=7.6, 0.8 Hz, 1H), 3.72 (t, J=4.6 Hz, 4H), 3.19 (t, J=4.8 Hz, 4H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C18H19N3O3S is 357.11 found 357.91 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (100 mg, 0.31 mmol), trimethylsilylacetylene (56 μL, 0.39 mmol), PdCl2(PPh3)2 (6.5 mg, 0.009 mmol), and CuI (1.7 mg, 0.009 mmol) in 1:1 Et3N/1,4-dioxane (3 mL) heated overnight at 65° C. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((2-methyl-5-((trimethylsilyl)ethynyl)phenyl)sulfonyl)morpholine (95 mg, 90%). MS (m/z): [M] calc'd for C16H23NO3SSi is 337.11 found 337.84 [M+H].
Then, a mixture of the product (95 mg, 0.28 mmol) and K2CO3 (140 mg, 1.0 mmol) in 3:1 THF/MeOH was stirred overnight at room temperature. Upon completion, the reaction mixture was quenched water and the aqueous layer was extracted with DCM. The combined organic layers were dried over Na2SO4 and concentrated to dryness to yield crude 4-((5-ethynyl-2-methylphenyl)sulfonyl)morpholine, which was used without further purification. 1H NMR (CDCl3) δ 8.02 (s, 1H), 7.57 (dd, J=8.0, 1.6 Hz, 1H), 7.30 (d, J=8.0 Hz, 1H), 3.73 (t, J=4.8 Hz, 4H), 3.17 (4.6 Hz, 4H), 3.14 (s, 1H), 2.64 (s, 3H).
A mixture of 4-((5-ethynyl-2-methylphenyl)sulfonyl)morpholine (50 mg, 0.19 mmol), NBS (40 mg, 0.22 mmol), and AgNO3 (3.2 mg, 0.02 mmol) in acetone (630 μL) was stirred for 1 hour at room temperature in an amber vial in the dark. After 1 hour, AgNO3 (3.2 mg, 0.02 mmol) was added, and the reaction mixture was stirred for an additional 1 hour. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((5-(bromoethynyl)-2-methylphenyl)sulfonyl)morpholine (51 mg, 79%). MS (m/z): [M] calc'd for C13H14BrNO3S is 342.99/344.99 found 343.67/345.67.
Then, a mixture of the product (51 mg, 0.15 mmol), benzamidine hydrochloride (35 mg, 0.22 mmol), K2CO3 (82 mg, 0.59 mmol), de-ionized water (6.5 μL), and 2,2′-bipyridine (1.2 mg, 0.008 mmol) in toluene (300 μL) was heated to 120° C. for 10 hours. Upon completion, the solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-27824 (26 mg, 46%). 1H NMR (CD3OD) δ 8.37 (d, J=2.0 Hz, 1H), 8.07 (s, 1H), 8.01 (dt, J=9.6, 2.0 Hz, 3H), 7.71-7.65 (m, 3H), 7.61 (d, J=8.0 Hz, 1H), 3.71 (t, J=4.8 Hz, 4H), 3.19 (t, J=4.8 Hz, 4H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C20H21N3O3S is 383.13 found 384.04 [M+H].
This compound was prepared according to the procedure for SR-25604 with 4-fluorobenzhydrazide in 21% overall yield. 1H NMR (CD3OD) δ 8.60 (s, 1H), 8.24 (d, J=7.6 Hz, 1H), 8.12-8.09 (m, 2H), 7.59 (d, J=7.6 Hz, 1H), 7.28 (t, J=8.4 Hz, 2H), 3.72 (t, J=4.6 Hz, 4H), 3.19 (t, J=4.6 Hz, 4H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C19H19FN4O3S is 402.12. found 402.97 [M+H].
A mixture of 2-chloro-4-cyanopyridine (200 mg, 1.4 mmol) and thiourea (110 mg, 1.4 mmol) was refluxed for 4 hours in isopropanol. Upon completion, the solid precipitate was collected by filtration and then was suspended in concentrated H2SO4 (4.8 mL). The mixture was cooled in an ice-water bath and NaOCl (18 mL, 14.5%) was added dropwise. The reaction mixture was stirred for 15 min in the ice-water bath and then was diluted with DCM. The aqueous layer was extracted with DCM. The combined organic layers were dried over Na2SO4 and concentrated to dryness to yield crude 4-cyanopyridine-2-sulfonyl chloride, which was used without further purification.
Then, a mixture of the crude product (329 mg, 1.6 mmol), NaHCO3 (1.4 g, 16.7 mmol), and morpholine (168 μL, 1.9 mmol) in DCM was stirred overnight at room temperature. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded pure product 2-(morpholinosulfonyl)isonicotinonitrile (190 mg, 52% yield over 3 steps). 1H NMR (CDCl3) δ 8.89 (dd, J=4.8, 0.8 Hz, 1H), 8.12 (t, J=1.0 Hz, 1H), 7.74 (dd, J=5.0, 1.4 Hz, 1H), 3.72 (t, J=4.6 Hz, 4H), 3.32 (t, J=4.8 Hz, 4H).
Lastly, a mixture of the product (30 mg, 0.12 mmol), K2CO3 (16 mg, 0.12 mmol), and benzhydrazide (32 mg, 0.24 mmol) in 1-BuOH (118 μL) was stirred for 4 hours at 120° C. in a pre-heated oil bath. Upon completion, the solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-28004 (29 mg, 66% yield). 1H NMR (CD3OD) δ 8.83 (d, J=4.8 Hz, 1H), 8.60 (s, 1H), 8.30 (d, J=4.8 Hz, 1H), 8.06-8.04 (m, 2H), 7.55 (d, J=5.2 Hz, 3H), 3.72 (t, J=4.6 Hz, 4H), 3.31 (t, J=4.6 Hz, 4H); MS (m/z): [M] calc'd for C17H17N5O3S is 371.11. found 371.90 [M+H].
This compound was prepared according to the procedure for SR-25604 with 3,4-difluorobenzohydrazide in 42% overall yield. 1H NMR (CD3OD) δ 8.58 (d, J=0.8 Hz, 1H), 8.21 (d, J=5.2 Hz, 1H), 8.00-7.96 (m, 1H), 7.91 (dd, J=4.2, 1.0 Hz, 1H), 7.58 (d, J=5.2 Hz, 1H), 7.43 (q, J=6.0 Hz, 1H), 3.72 (t, J=3.0 Hz, 4H), 3.12 (t, J=3.2 Hz, 4H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C19H18F2N4O3S is 420.11. found 420.94 [M+H].
A mixture of 3-chloro-4-(trifluoromethyl)benzonitrile (100 mg, 0.49 mmol) and Na2S (76 mg, 0.97 mmol) in DMF (490 μL) was microwaved in a Biotage© microwave reactor at 120° C. for 4 hours under high absorption conditions. Upon completion, solvent was removed under reduced pressure and the residue was suspended in concentrated H2SO4 (1.2 mL). The mixture was cooled in an ice-water bath and NaOCl (4.5 mL, 14.5%) was added dropwise. The reaction mixture was stirred for 15 min in the ice-water bath and then was diluted with DCM. The aqueous layer was extracted with DCM. The combined organic layers were dried over Na2SO4 and concentrated to dryness to yield crude 5-cyano-2-(trifluoromethyl)benzenesulfonyl chloride, which was used without further purification.
Then, a mixture of the crude product, NaHCO3 (334 mg, 4.0 mmol), and morpholine (41 μL, 0.48 mmol) in DCM was stirred overnight at room temperature. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded pure product 3-(morpholinosulfonyl)-4-(trifluoromethyl)benzonitrile (46 mg, 30% yield over 3 steps). 1H NMR (CDCl3) δ 8.39 (s, 1H), 8.05 (d, J=8.0 Hz, 1H), 8.00 (dd, J=8.2, 0.6 Hz, 1H), 3.74 (t, J=4.8 Hz, 4H), 3.28 (t, J=4.8 Hz).
Lastly, a mixture of the product (20 mg, 0.06 mmol), K2CO3 (9 mg, 0.06 mmol), and benzhydrazide (17 mg, 0.12 mmol) in 1-BuOH (63 μL) was stirred for 4 hours at 120° C. in a pre-heated oil bath. Upon completion, the solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-28004 (9 mg, 26% yield). 1H NMR (CD3OD) δ 8.73 (s, 1H), 8.56 (d, J=8.4 Hz, 1H), 8.25 (d, J=8.4 Hz, 1H), 8.08-8.06 (m, 2H), 7.56 (d, J=5.6 Hz, 3H), 3.73 (t, J=4.6 Hz, 4H), 3.26 (t, J=4.6 Hz, 4H); MS (m/z): [M] calc'd for C19H17F3N4O3S is 438.10. found 438.91 [M+H].
This compound was prepared according to the procedure for SR-25604 with 4-methoxybenzohydrazide in 35% overall yield. 1H NMR (CD3OD) δ 8.60 (d, J=2.0 Hz, 1H), 8.24 (dd, J=8.0, 2.0 Hz, 1H), 7.99 (dd, J=6.8, 2.0 Hz, 2H), 7.57 (d, J=8.0 Hz, 1H), 7.09 (dd, J=6.8, 2.0 Hz, 2H), 3.88 (s, 3H), 3.72 (t, J=4.8 Hz, 4H), 3.19 (t, J=4.8 Hz, 4H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C20H22N4O4S is 414.14. found 414.96 [M+H].
This compound was prepared according to the procedure for SR-25604 with 4-(dimethylamino)benzhydrazide in 18% overall yield. 1H NMR (CD3OD) δ 8.60 (d, J=1.6 Hz, 1H), 8.24 (dd, J=7.8, 1.8 Hz, 1H), 7.90 (d, J=8.8 Hz, 2H), 7.57 (d, J=7.6 Hz, 1H), 6.92 (d, J=9.2 Hz, 2H), 3.72 (t, J=4.8 Hz, 4H), 3.19 (t, J=4.8 Hz, 4H), 3.07 (s, 6H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C21H25N5O3S is 427.17. found 428.09 [M+H].
This compound was prepared according to the procedure for SR-25604 with 4-bromobenzohydrazide in 26% overall yield. 1H NMR (CD3OD) δ 8.59 (d, J=1.6 Hz, 1H), 8.23 (d, J=7.6 Hz, 1H), 7.99 (d, J=8.4 Hz, 2H), 7.70 (d, J=8.4 Hz, 2H), 7.58 (d, J=8.0 Hz, 1H), 3.72 (t, J=4.6 Hz, 4H), 3.19 (t, J=4.8 Hz, 4H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C19H19BrN4O3S is 462.04/464.04. found 462.88/464.89 [M+H].
This compound was prepared according to the procedure for SR-25604 with isonicotinic hydrazide in 15% overall yield. 1H NMR (CD3OD) δ 8.86 (br, 2H), 8.62 (d, J=2.0 Hz, 1H), 8.53 (br, 2H), 8.24 (dd, J=8.0, 1.6 Hz, 1H), 7.65 (d, J=8.0 Hz, 1H), 3.72 (t, J=4.8 Hz, 4H), 3.19 (t, J=4.8 Hz, 4H), 2.73 (s, 3H); MS (m/z): [M] calc'd for C18H19N5O3S is 385.12. found 385.96 [M+H].
This compound was prepared according to the procedure for SR-25604 with cyclohexanebenzhydrazide in 30% overall yield. 1H NMR (CD3OD) δ 8.51 (d, J=1.6 Hz, 1H), 8.15 (dd, J=7.6, 1.6 Hz, 1H), 7.53 (d, J=8.0 Hz, 1H), 3.70 (t, J=4.8 Hz, 4H), 3.17 (t, J=4.8 Hz, 4H), 2.89 (tt, J=11.8, 3.4 Hz, 1H), 2.68 (s, 3H), 2.06 (dd, J=13.6, 2.0 Hz, 2H), 1.89 (dt, J=12.8, 3.2 Hz, 2H), 1.81-1.77 (m, 1H), 1.63 (qd, J=12.4, 2.8 Hz, 2H), 1.52-1.29 (m, 3H); MS (m/z): [M] calc'd for C19H26N4O3S is 390.17. found 390.96 [M+H].
A mixture of 4-((2-methyl-5-(1-(methylsulfonyl)-1H-pyrazol-4-yl)phenyl)sulfonyl)morpholine (52 mg, 0.17 mmol), Cs2CO3 (110 mg, 0.34 mmol), N,N′-dimethylethylenediamine (3.6 μL, 0.034 mmol), iodobenzene (38 μL, 0.34 mmol), and CuI (1.6 mg, 0.008 mmol) in DMF (850 μL) was stirred for 48 hours at 120° C. in a pre-heated oil bath. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product SR-28925 (46 mg, 71% yield). 1H NMR (CD3OD) δ 8.71 (s, 1H), 8.12 (t, J=2.2 Hz, 2H), 7.86-7.81 (m, 3H), 7.51 (t, J=8.0 Hz, 2H), 7.45 (d, J=8.0 Hz, 1H), 7.35 (t, J=7.4 Hz, 1H), 3.70 (t, J=4.6 Hz, 4H), 3.15 (t, J=4.6 Hz, 4H), 2.64 (s, 3H); MS (m/z): [M] calc'd for C20H21N3O3S is 383.13. found 384.08 [M+H].
A mixture of 3-(chlorosulfonyl)-4-methylbenzoic acid (1 g, 4.3 mmol) and morpholine (1.5 mL, 17 mmol) in DCM was stirred overnight at room temperature. Upon completion, the reaction mixture was quenched with 10% HCl(aq). The aqueous layer was extracted with DCM. The combined organic layers were dried over Na2SO4 and concentrated to dryness to yield crude 4-methy-3-(morpholinosulfonyl)benzoic acid, which was used without further purification. MS (m/z): [M] calc'd for C12H15NO5S is 285.07. found 285.77 [M+H].
Then, a mixture of 4-methyl-3-(morpholinosulfonyl)benzoic acid (50 mg, 0.18 mmol), 2-aminoacetophenon HCl (36 mg, 0.21 mmol), DIPEA (61 μL, 0.35 mmol), and HATU (67 mg, 0.18 mmol) in DMF stirred overnight at room temperature. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded 4-methyl-3-(morpholinosulfonyl)-N-(2-oxo-2-phenylethyl)benzamide (115 mg, >100% yield). MS (m/z): [M] calc'd for C20H22N2O5S is 402.12 found 402.79 [M+H].
Lastly, a mixture of 4-methyl-3-(morpholinosulfonyl)-N-(2-oxo-2-phenylethyl)benzamide (115 mg, 0.29 mmol) and NH4OAc (265 mg, 3.4 mmol) in xylenes was stirred overnight at 135° C. in a pre-heated oil bath. Upon completion, the solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-28804 as a TFA salt (36 mg, 41% yield over 2 steps). 1H NMR (CD3OD) δ 8.57 (s, 1H), 8.16 (dd, J=8.0, 2.0 Hz, 1H), 7.98 (s, 1H), 7.85-7.82 (m, 2H), 7.30 (d, J=8.0 Hz, 1H), 7.62-7.46 (m, 3H), 3.72 (t, J=4.8 Hz, 4H), 3.21 (t, J=4.6 Hz, 4H), 2.75 (s, 3H); MS (m/z): [M] calc'd for C20H21N3O3S is 383.13 found 383.96 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (25 mg, 0.08 mmol), 1-benzyl-pyrazole-4-boronic acid pinacol ester (33 mg, 0.12 mmol) and Na2CO3(aq) (117 μL, 2M, 0.23 mmol) in 1,4-dioxane (1.6 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (4.5 mg, 0.004 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-28764 (12 mg, 39% yield). 1H NMR (CD3OD) δ 8.14 (s, 1H), 7.99 (d, J=2.0 Hz, 1H), 7.90 (s, 1H), 7.71 (dd, J=7., 1.8 Hz, 1H), 7.39 (d, J=8.0 Hz, 1H), 7.36-7.26 (m, 5H), 5.36 (s, 2H), 3.67 (t, J=4.8 Hz, 4H), 3.11 (t, J=4.8 Hz, 4H), 2.60 (s, 3H); MS (m/z): [M] calc'd for C21H23N3O3S is 397.15 found 397.88 [M+H].
A mixture of 4-methy-3-(morpholinosulfonyl)benzoic acid (90 mg, 0.32 mmol), DMF (2 drops), and SOCl2 (50 μL, 0.69 mmol) in DCM was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure. The remaining residue was re-dissolved in DCM. Methylamine HCl (26 mg, 0.39 mmol) and NaHCO3 (265 mg, 3.2 mmol) were added to the solution and the reaction mixture was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded N,4-dimethy-3-(morpholinosulfonyl)benzamide (72 mg, 77% yield over 2 steps). MS (m/z): [M] calc'd for C13H18N2O4S is 298.36. found 298.88 [M+H].
Then, a mixture of the product (72 mg, 0.24 mmol) and 2-fluoropyridine (24 μL, 0.28 mmol) in DCE (804 μL) was cooled in an ice-water bath under argon. Trifluoromethane sulfonic anhydride (45 μL, 0.27 mmol) was added dropwise and the reaction mixture was stirred for 10 min in the ice-water bath under argon. Benzhydrazide (36 mg, 0.26 mmol) was added, and the reaction mixture was stirred for 10 min at room temperature. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 140° C. for 2 hours under very high absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-28864 (16 mg, 17% yield). 1H NMR (CD3OD) δ 8.35 (d, J=2.0 Hz, 1H), 8.03 (dd, J=7.8, 1.8 Hz, 1H), 7.86 (dt, J=6.4, 1.6 Hz, 2H), 7.78-7.69 (m, 4H), 3.87 (s, 3H), 3.72 (t, J=4.6 Hz, 4H), 3.22 (t, J=4.8 Hz, 4H), 2.78 (s, 3H); MS (m/z): [M] calc'd for C20H22N4O3S is 398.14. found 399.20 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (100 mg, 0.31 mmol), 1-(triisopropylsilyl)pyrroleboronic acid (100 mg, 0.37 mmol), de-ionized water (800 μL), and K2CO3 (108 mg, 0.78 mmol) in DME (3.2 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (18 mg, 0.015 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 110° C. for 4 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((2-methyl-5-(1-(triisopropylsilyl)-1H-pyrrol-3-yl)phenyl)sulfonyl)morpholine (42 mg, 29% yield). MS (m/z): [M] calc'd for C24H38N2O3SSi is 462.24 found 463.30 [M+H].
Then, a mixture of the product (42 mg, 0.09 mmol) and TBAF (109 μL, 1M in THF) in THF stirred for 5 min at room temperature under argon. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((2-methyl-5-(1H-pyrrol-3-yl)phenyl)sulfonyl)morpholine (22 mg, 79% yield). MS (m/z): [M] calc'd for C15H18N2O3S is 306.10. found 306.85 [M+H].
Finally, a mixture of the product (22 mg, 0.07 mmol), Cs2CO3 (47 mg, 0.14 mmol), iodobenzene (16 μL, 0.14 mmol), N,N′-dimethylethylenediamine (1.5 μL, 0.014 mmol), and CuI (1.0 mg, 0.005 mmol) in DMF (361 μL) was stirred for 48 hours at 120° C. in a pre-heated oil bath. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product SR-29084 (6 mg, 22% yield). 1H NMR (CD3OD) δ 8.05 (s, 1H), 7.78 (d, J=6.4 Hz, 1H), 7. 66 (s, 1H), 7.55 (d, J=4.8 Hz, 2H), 7.50-7.47 (m, 2H), 7.39 (dd, J=8.0, 3.2 Hz, 1H), 7.28 (m, 2H), 6.68 (s, 1H), 3.70 (d, J=4.0 Hz, 4H), 3.14 (d, J=4.0 Hz, 4H), 2.62 (d, J=3.2 Hz, 3H); MS (m/z): [M] calc'd for C21H22N2O3S is 382.14 found 382.97.
A mixture of 4-((5-(2-Chloropyridin-4-yl)-2-methylphenyl)sulfonyl)morpholine (35 mg, 0.1 mmol), phenylboronic acid (18 mg, 0.15 mmol), de-ionized water (250 μL), and K2CO3 (34 mg, 0.25 mmol) in 1,4-dioxane (1 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(dppf)Cl2·CH2Cl2 (7.2 mg, 0.009 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 2 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-28984 (36 mg, 92% yield). 1H NMR (CD3OD) δ 8.70 (d, J=5.2 Hz, 1H), 8.26 (d, J=1.6 Hz, 1H), 8.20 (d, J=0.8 Hz, 1H), 8.04-8.02 (m, 3H), 7.67 (dd, J=5.2, 1.2 Hz, 1H), 7.62 (d, J=8.0 Hz, 1H), 7.54-7.46 (m, 3H), 3.71 (t, J=4.6 Hz, 4H), 3.18 (t, J=4.6 Hz, 4H), 2.72 (s, 3H); MS (m/z): [M] calc'd for C22H22N2O3S is 394.14, found 395.30 [M+H].
This compound was prepared according to the procedure for SR-28984 with 4-fluorophenylboronic acid pinacol ester in 86% yield. 1H NMR (CD3OD) δ 8.67 (d, J=5.2 Hz, 1H), 8.24 (d, J=1.6 Hz, 1H), 8.09-8.05 (m, 3H), 8.01 (dd, J=8.0, 2.0 Hz, 1H), 7.64 (dd, J=5.2, 1.6 Hz, 1H), 7.60 (d, J=7.6 Hz, 1H), 7.26-7.22 (m, 2H), 3.70 (t, J=4.6 Hz, 4H), 3.17 (t, J=4.8 Hz, 4H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C22H21FN2O3S is 412.13. found 413.05 [M+H].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (50 mg, 0.16 mmol), 3-furanylboronic acid (26 mg, 0.23 mmol), de-ionized water (400 μL), and K2CO3 (65 mg, 0.47 mmol) in 1,4-dioxane (1.6 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (9 mg, 0.008 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 2 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded product 4-((5-(furan-3-yl)-2-methylphenyl)sulfonyl)morpholine (55 mg). MS (m/z): [M] calc'd for C15H17NO4S is 307.09. found 307.87 [M+H].
Then a mixture of the product (55 mg) and Br2 (10 μL, 0.19 mmol) in Et2O was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-((5-(5-bromofuran-3-yl)-2-methylphenyl)sulfonyl)morpholine (51 mg, 85% yield over 2 steps). MS (m/z): [M] calc'd for C15H16BrNO4S is 385.00/387.00. found 385.81/387.81 [M+1].
Finally, a mixture of the product (51 mg, 0.13 mmol), phenylboronic acid (24 mg, 0.2 mmol), de-ionized water (333 μL), and K2CO3 (45 mg, 0.33 mmol) in 1,4-dioxane (1.3 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(dppf)Cl2·CH2Cl2 (9.6 mg, 0.013 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 2 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-29044 (22 mg, 43% yield). 1H NMR (CD3OD) δ 7.76 (d, J=2.0 Hz, 1H), 7.64 (d, J=1.6 Hz, 1H), 7.58 (dd, J=7.8, 1.8 Hz, 1H), 7.45-7.42 (m, 3H), 7.35-7.29 (m, 3H), 6.67 (d, J=1.6 Hz, 1H), 3.64 (t, J=4.8 Hz, 4H), 3.01 (t, J=4.8 Hz, 4H), 2.64 (s, 3H); MS (m/z): [M] calc'd for C21H21NO4S is 383.12. found 383.87 [M+1].
This compound was prepared according to the procedure for SR-25604 with 4-nitrobenzhydrazide in 15% overall yield. 1H NMR (CD3OD) δ 8.61 (d, J=1.6 Hz, 1H), 8.36 (q, J=8.8 Hz, 4H), 8.24 (d, J=8.0 Hz, 1H), 7.62 (d, J=8.0 Hz, 1H), 3.72 (t, J=4.6 Hz, 4H), 3.20 (t, J=4.6 Hz, 4H), 2.72 (s, 3H); MS (m/z): [M] calc'd for C9H19N5O5S is 429.11. found 429.96 [M+1].
This compound was prepared according to the procedure for SR-29044 with thiophene-3-boronic acid in 35% overall yield. 1H NMR (CD3OD) δ 7.57-7.55 (m, 2H), 7.51 (d, J=5.6 Hz, 1H), 7.40 (d, J=7.6 Hz, 1H), 7.32-7.25 (m, 5H), 7.21 (d, J=5.2 Hz, 1H), 3.61 (t, J=4.8 Hz, 4H), 2.83 (t, J=4.8 Hz, 4H), 2.60 (s, 3H); MS (m/z): [M] calc'd for C21H21NO3S2 is 399.10. found 399.85 [M+1].
This compound was prepared according to the procedure for SR-28984 with 4-pyridineboronic acid pinacol ester in 71% yield. 1H NMR (CD3OD) δ, 8.79 (dd, J=5.2, 0.8 Hz, 1H), 8.69 (br, 2H), 8.29-8.28 (m, 2H), 8.15 (d, J=6.0 Hz, 2H), 8.05 (dd, J=8.0, 2.0 Hz, 1H), 7.78 (dd, J=5.2, 1.6 Hz, 1H), 7.63 (d, J=8.0 Hz, 1H), 3.71 (t, J=4.8 Hz, 4H), 3.18 (t, J=4.8 Hz, 4H), 2.72 (s, 3H); MS (m/z): [M] calc'd for C21H21N3O3S is 395.13. found 395.99 [M+1].
A mixture of 4-((5-bromo-2-methylphenyl)sulfonyl)morpholine (20 mg, 0.06 mmol), K2CO3 (22 mg, 0.16 mmol), de-ionized water (300 μL), and 2-morpholinopyridine-4-boronic acid pinacol ester (27 mg, 0.09 mmol) in 1,4-dioxane (1.2 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (3.6 mg, 0.003 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 2 hours under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-29224 (25 mg, 100% yield). 1H NMR (CDCl3) δ 8.22 (d, J=1.6 Hz, 1H), 8.09 (d, J=6.4 Hz, 1H), 7.99 (dd, J=7.8, 1.8 Hz, 1H), 7.62 (d, J=8.0 Hz, 1H), 7.41 (s, 1H), 7.22 (d, J=6.4 Hz, 1H), 3.87 (t, J=4.8 Hz, 4H), 3.71-3.68 (m, 8H), 3.17 (t, J=4.8 Hz, 4H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C20H25N3O4S is 403.16. found 404.30 [M+1].
This compound was prepared according to the procedure for SR-29044 with 1-(triisopropyl)pyrrole-3-boronic acid pinacol ester in 32% overall yield after TBAF de-protection of the TIPS group. 1H NMR (CD3OD) δ 7.51 (s, 1H), 7.48 (d, J=8.0 Hz, 1H), 7.30 (d, J=8.0 Hz, 1H), 7.26-7.14 (m, 5H), 6.95 (d, J=1.2 Hz, 1H), 6.87 (d, J=1.2 Hz, 1H), 3.62 (t, J=4.6 Hz, 4H), 2.88 (t, J=4.6 Hz, 4H), 2.58 (s, 3H); MS (m/z): [M] calc'd for C21H22N2O3S is 382.14. found 383.20 [M+1].
A mixture of 4-((5-bromo-2-chlorophenyl)sulfonyl)morpholine (100 mg, 0.29 mmol) and Zn(CN)2 (18 mg, 0.15 mmol) in DMF (2.9 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (6.4 mg, 0.006 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 90° C. for 60 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-chloro-3-(morpholinosulfonyl)benzonitrile (73 mg, 87% yield).
Then, a mixture of the product (73 mg, 0.25 mmol), K2CO3 (106 mg, 0.77 mmol), cyclopropylboronic acid (33 mg, 0.38 mmol), and de-ionized water (325 μL) in 1,4-dioxane (1.3 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(dppf)Cl2·CH2Cl2 (9.3 mg, 0.013 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 120° C. for 2 hours min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-cyclopropyl-3-(morpholinosulfonyl)benzonitrile (29 mg, 39% yield).
Then, a mixture of the product (29 mg, 0.1 mmol), K2CO3 (14 mg, 0.1 mmol), and benzhydrazide (27 mg, 0.2 mmol) in 1-BuOH (99 μL) was stirred at 120° C. in a pre-heated oil bath for 24 hours. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-29784 (19 mg, 47% yield). 1H NMR (CD3OD) δ 8.64 (s, 1H), 8.24 (d, J=8.0 Hz, 1H), 8.06 (d, J=6.8 Hz, 2H), 7.54 (d, J=6.4 Hz, 3H), 7.21 (d, J=8.4 Hz, 1H), 3.72 (t, J=4.6 Hz, 4H), 3.20 (t, J=4.8 Hz, 4H), 2.94-2.88 (m, 1H), 1.20 (dt, J=10.0, 5.2 Hz, 2H), 0.97 (t, J=4.6 Hz, 2H); MS (m/z): [M] calc'd for C21H22N4O3S is 410.14. found 410.88 [M+1].
A mixture of phenylboronic acid (20 mg, 0.16 mmol), NaN3 (16 mg, 0.25 mmol), and Cu(OAc)2 (3.0 mg, 0.016 mmol) in MeOH (840 μL) was stirred for 1.5 hours at 55° C. in a pre-heated oil bath and then was cooled to room temperature. 4-((5-Ethynyl-2-methylphenyl)sulfonyl)morpholine (50 mg, 0.19 mmol) and sodium ascorbate (3.7 mg, 0.019 mmol) were added, and the reaction mixture was stirred overnight at room temperature. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product SR-30084 (32 mg, 51% yield). 1H NMR (CDCl3) δ 8.33 (s, 1H), 8.28 (d, J=1.2 Hz, 1H), 8.12 (d, J=7.6 Hz, 1H), 7.80 (d, J=8.4 Hz, 2H), 7.56 (td, J=6.8, 1.2 Hz, 2H), 7.49-7.44 (m, 2H), 3.744 (d, J=4.4 Hz, 4H), 3.20 (d, J=4.4 Hz, 4H), 2.68 (s, 3H); MS (m/z): [M] calc'd for C19H20N4O3S is 384.13. found 384.80 [M+1].
A mixture of 2-(trifluoromethyl)benzene sulfonyl chloride (100 mg, 0.41 mmol), NaHCO3 (343 mg, 4.1 mmol), and cis-2,6-dimethylmorpholine (60 μL, 0.49 mmol) in DCM was stirred overnight at room temperature. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded product (cis)-2,6-dimethyl-4-((2-(trifluoromethyl)phenyl)sulfonyl)morpholine (187 mg). MS (m/z): [M] calc'd for C13H16F3NO3S is 323.08. found 323.77 [M+1].
Then, a mixture of the product (187 mg) and NBS (119 mg, 0.67 mmol) in concentrated H2SO4 (512 μL) stirred overnight at room temperature then was diluted with brine. The aqueous layer was extracted with DCM. The combined organic layers were dried over Na2SO4 and concentrated to dryness. Purification via column chromatography afforded pure product (cis)-4-((5-bromo-2-(trifluoromethyl)phenyl)sulfonyl)-2,6-dimethylmorpholine (50 mg, 30% yield over 2 steps). 1H NMR (CDCl3) δ 8.02 (d, J=1.6 Hz, 1H), 7.95 (d, J=8.8 Hz, 1H), 7.85 (dd, J=8.4, 1.6 Hz, 1H), 3.70-3.62 (m, 2H), 3.56 (d, J=12.0 Hz, 2H), 2.38 (t, J=11.2 Hz, 2H), 1.15 (d, J=6.0 Hz, 6H).
Then, a mixture of the product (50 mg, 0.12 mmol), dppf (3.8 mg, 0.007 mmol), de-ionized water (25 μL), and Zn(CN)2 (18 mg, 0.15 mmol) in DMF (2.5 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd2(dba)3 (2.5 mg, 0.003 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 115° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 3-(((cis)-2,6-dimethylmorpholino)sulfonyl)-4-(trifluoromethyl)benzonitrile (38 mg, 88% yield).
Finally, a mixture of the product (38 mg, 0.11 mmol), K2CO3 (15 mg, 0.11 mmol), and benzhydrazide (30 mg, 0.22 mmol) in 1-BuOH (109 μL) was stirred at 120° C. in a pre-heated oil bath for 24 hours. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC afforded pure product SR-30786 (28 mg, 55% yield). 1H NMR (CD3OD) δ 8.71 (s, 1H), 8.55 (d, J=8.0 Hz, 1H), 8.23 (d, J=8.4 Hz, 1H), 8.06 (d, J=5.6 Hz, 2H), 7.57-7.55 (m, 3H), 3.69-3.64 (m, 4H), 2.42 (t, J=11.8 Hz, 2H), 1.15 (d, J=6.0 Hz, 6H); 19F NMR (CD3OD) δ −58.52; MS (m/z): [M] calc'd for C21H21F3N4O3S is 466.13. found 466.93 [M+1].
This compound was prepared according to the procedure for SR-30786 in 31% overall yield starting with morpholine, rather than cis-2,6-dimethylmorpholine, and 2-(trifluoromethoxy)benzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.71 (d, J=1.6 Hz, 1H), 8.49 (d, J=8.0 Hz, 1H), 8.05 (m, 2H), 7.70 (d, J=8.4 Hz, 1H), 7.55 (m, 3H), 3.72 (t, J=4.6 Hz, 4H), 3.24 (t, J=4.6 Hz, 4H); MS (m/z): [M] calc'd for C19H17F3N4O4S is 454.09. found 454.70 [M+1].
This compound was prepared according to the procedure for SR-25604 in 69% overall yield starting with 3-(aminomethyl)pyridine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.60 (s, 1H), 8.48-8.42 (br, 2H), 8.16 (dd, J=8.0, 2.0 Hz, 1H), 8.06 (dd, J=7.8, 1.8 Hz, 2H), 7.90 (d, J=7.6 Hz, 1H), 7.57-7.43 (m, 5H), 4.28 (s, 2H), 2.67 (s, 3H); MS (m/z): [M] calc'd for C21H19N5O2S is 405.13. found 404.20 [M+1].
This compound was prepared according to the procedure for SR-25604 in 68% overall yield starting with 4-(2-aminoethyl)morpholine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.67 (d, J=1.6 Hz, 1H), 8.20 (dd, J=7.8, 1.8 Hz, 1H), 8.07 (dd, J=7.6, 1.6 Hz, 2H), 7.56-7.51 (m, 4H), 3.58 (t, J=4.8 Hz, 4H), 3.12 (t, J=6.4 Hz, 2H), 2.74 (s, 3H), 2.39 (t, J=6.6 Hz, 2H), 2.32 (t, J=4.4 Hz, 4H); MS (m/z): [M] calc'd for C21H25N5O3S is 427.17. found 428.10 [M+1].
A mixture of 5-bromo-2-methylbenzoic acid (50 mg, 0.23 mmol), DIPEA (81 μL, 0.46 mmol), morpholine (20 μL, 0.23 mmol), and HATU (106 mg, 0.28 mmol) in DMF was stirred overnight at 50° C. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded product (5-bromo-2-methylphenyl)(morpholino)methanone (88 mg). MS (m/z): [M] calc'd for C12H14BrNO2 is 283.02/285.02. found 284.10/286.10.
Then, a mixture of the product (88 mg), dppf (7.1 mg, 0.013 mmol), de-ionized water (12 μL), and Zn(CN)2 (32 mg, 0.27 mmol) in DMF (1.2 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd2(dba)3 (4.7 mg, 0.005 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 115° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 4-methyl-3-(morpholine-4-carbonyl)benzonitrile (44 mg, 82% yield over 2 steps).
Finally, a mixture of the product (44 mg, 0.19 mmol), K2CO3 (26 mg, 0.19 mmol), and benzhydrazide (52 mg, 0.38 mmol) in 1-BuOH (191 μL) was stirred at 150° C. in a pre-heated oil bath for 24 hours. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-32044 (53 mg, 80% yield). 1H NMR (CD3OD) δ 8.04 (m, 3H), 7.93 (s, 1H), 7.51-7.44 (m, 4H), 3.86-3.61 (m, 8H), 2.37 (s, 3H); MS (m/z): [M] calc'd for C20H20N4O2 is 348.16. found 348.70 [M+1].
This compound was prepared according to the procedure for SR-25604 in 26% overall yield starting with 2-amino-2-methylpropanol and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.73 (s, 1H), 8.19 (d, J=8.0 Hz, 1H), 8.07 (d, J=6.4 Hz, 2H), 7.54-7.51 (m, 4H), 3.42 (s, 2H), 2.74 (s, 3H), 1.16 (s, 6H); MS (m/z): [M] calc'd for C19H22N4O3S is 386.14. found 387.10 [M+1].
This compound was prepared according to the procedure for SR-25604 in 53% overall yield starting with 4-hydroxypiperidine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.61 (s, 1H), 8.22 (d, J=8.0 Hz, 1H), 8.06 (d, J=6.4 Hz, 2H), 7.56-7.52 (m, 4H), 3.74 (tt, J=8.0, 3.8 Hz, 1H), 3.60-3.54 (m, 2H), 2.06-3.00 (m, 2H), 2.68 (s, 3H), 1.93-1.88 (m, 2H), 1.62-1.58 (m, 2H); MS (m/z): [M] calc'd for C20H22N4O3S is 398.14. found 399.10 [M+1].
This compound was prepared according to the procedure for SR-25604 in 49% overall yield starting with 3-hydroxyazetidine HCl and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.66 (d, J=1.6 Hz, 1H), 8.20 (dd, J=7.8, 1.4 Hz, 1H), 8.06 (dd, J=6.8, 1.6 Hz, 2H), 7.54-7.52 (m, 4H), 3.66 (quintet, 6.0 Hz, 1H), 3.53-3.44 (m, 2H), 3.10 (dd, J=13.2, 5.2 Hz, 1H), 2.93 (dd, J=13.4, 7.0 Hz, 1H), 2.72 (s, 3H).
This compound was prepared according to the procedure for SR-25604 in 27% overall yield starting with 2-aminomethylpyridine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.69 (d, J=5.2 Hz, 1H), 8.56 (d, J=1.6 Hz, 1H), 8.44 (td, J=8.0, 1.6 Hz, 1H), 8.20 (dd, J=8.0, 1.6 Hz, 1H), 8.07-8.03 (m, 2H), 7.85 (t, J=6.4 Hz, 1H), 7.61-7.51 (m, 5H), 4.53 (s, 2H), 2.73 (s, 3H).
This compound was prepared according to the procedure for SR-25604 in 66% overall yield starting with 3-pyrrolidinol and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.63 (d, J=2.0 Hz, 1H), 8.20 (dd, J=7.8, 1.8H, 1H), 8.06 (dt, J=5.6, 1.6 Hz, 2H), 7.56-7.50 (m, 4H), 4.45-4.42 (m, 1H), 3.52-3.47 (m, 3H), 3.29-3.28 (m, 1H), 2.70 (s, 3H), 2.12-1.96 (m, 2H); MS (m/z): [M] calc'd for C19H20N4O3S is 384.13, found 384.94 [M+1].
This compound was prepared according to the procedure for SR-25604 in 48% overall yield starting with 3-methylmorpholine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.72 (d, J=1.2 Hz, 1H), 8.22 (dd, J=8.0, 1.6H, 1H), 8.04-8.01 (m, 2H), 7.47-7.45 (m, 3H), 7.40 (d, J=8.0 Hz, 1H), 3.92 (q, J=6.8 Hz, 1H), 3.80 (dd, J=9.2, 1.6 Hz, 1H), 3.67 (qd, J=7.8, 2.6 Hz, 1H), 3.50-3.35 (m, 2H), 3.28 (d, J=13.2 Hz, 1H), 2.64 (s, 3H), 1.34 (d, J=6.8 Hz, 3H); MS (m/z): [M] calc'd for C20H22N4O3S is 398.14. found 398.7 [M+1].
This compound was prepared according to the procedure for SR-25604 in 34% overall yield starting with 1-(oxetan-3-yl)piperazine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.58 (s, 1H), 8.26 (d, J=8.0 Hz, 1H), 8.04-8.12 (m, 2H), 7.51-7.48 (m, 3H), 7.44 (d, J=8.0 Hz, 1H), 4.65 (qd, 6.4 Hz, 3.2 Hz, 4H), 3.65 (quintet, J=6.4 Hz, 1H), 3.41 (m, 4H), 2.67 (s, 3H), 2.57 (m, 4H); MS (m/z): [M] calc'd for C22H25N5O3S is 439.17. found 440.3 [M+1].
This compound was prepared according to the procedure for SR-25604 in 72% overall yield starting with (3aR,6aS)-hexahydro-1H-furo[3,4-c]pyrrole and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.54 (d, J=1.2 Hz, 1H), 8.27 (dd, J=8.0, 1.6 Hz, 1H), 8.09-8.07 (m, 2H), 7.47-7.42 (m, 4H), 3.88 (dd, J=6.4, 2.8 Hz, 2H), 3.75 (dd, J=10.6, 2.6 Hz, 2H), 3.54 (dd, J=7.2, 3.2 Hz, 2H); 3.24 (dd, J=10.4, 2.4 Hz, 2H), 3.00 (q, J=3.2 Hz, 2H), 2.69 (s, 3H); MS (m/z): [M] calc'd for C21H22N4O3S is 410.14. found 410.6 [M+1].
This compound was prepared according to the procedure for SR-25604 in 48% overall yield starting with 3-oxa-8-azabicyclo[3.2.1]octane and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.74 (d, J=1.2 Hz, 1H), 8.23 (dd, J=7.6, 1.6 Hz, 1H), 8.03-8.01 (m, 2H), 7.47-7.42 (m, 3H), 7.41 (d, J=8.0 Hz, 1H), 4.03 (s, 2H), 3.67 (d, J=10.8 Hz, 2H), 3.57 (d, J=10.0 Hz, 2H), 2.73 (s, 3H), 2.08-1.99 (m, 4H); MS (m/z): [M] calc'd for C21H22N4O3S is 410.14. found 410.9 [M+1].
This compound was prepared according to the procedure for SR-25604 in 65% overall yield starting with 1,4-dioxa-8-azaspiro[4.5]decane and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.61 (s, 1H), 8.18 (d, J=8.0 Hz, 1H), 8.03-8.01 (m, 2H), 7.44-7.42 (m, 3H), 7.36 (d, J=8.0 Hz, 1H), 3.90 (s, 4H), 3.33 (t, J=5.6 Hz, 4H), 2.64 (s, 3H), 1.75 (t, J=5.6 Hz, 4H); MS (m/z): [M] calc'd for C22H24N4O4S is 440.15, found 440.9 [M+1].
This compound was prepared according to the procedure for SR-25604 in 69% overall yield starting with piperidone-4-propyleneketal and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.63 (d, J=1.2 Hz, 1H), 8.21 (dd, J=7.6, 1.6 Hz, 1H), 8.05-8.02 (m, 2H), 7.47-7.40 (m, 3H), 7.39 (d, J=8.0 Hz, 1H), 3.83 (t, J=5.4 Hz, 4H), 3.27 (t, J=5.4 Hz, 4H), 2.65 (s, 3H), 1.93 (t, J=5.6 Hz, 4H), 1.68 (quintet, J=5.6 Hz, 2H); MS (m/z): [M] calc'd for C23H26N4O4S is 454.17. found 455.1 [M+1].
This compound was prepared according to the procedure for SR-25604 in 51% overall yield starting with 1,4-dioxaspiro[4,5] dec-8-yl amine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.70 (d, J=1.2 Hz, 1H), 8.18 (d, J=8.0 Hz, 1H), 8.06 (m, 3H), 7.52 (m, 4H), 3.90-3.83 (m, 4H), 3.19 (tt, J=8.0, 4.0 Hz, 1H), 2.71 (s, 3H), 1.75-1.55 (m, 8H); MS (m/z): [M] calc'd for C23H26N4O4S is 454.17. found 454.7 [M+1].
This compound was prepared according to the procedure for SR-25604 in 51% overall yield starting with 4-hydroxy-4-phenylpiperidine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.66 (d, J=1.2 Hz, 1H), 8.24 (d, J=8.0 Hz, 1H), 8.06 (m, 3H), 7.53 (m, 4H), 7.46 (d, J=8.4 Hz, 2H), 7.32 (t, J=7.6 Hz, 2H), 7.22 (td, J=7.w, 1.2 Hz, 1H), 3.73 (d, J=12.0 Hz, 2H), 3.21 (t, J=12.0 Hz, 2H), 2.73 (s, 3H), 2.17-2.08 (m, 2H), 1.79 (d, J=13.2 Hz, 2H).
This compound was prepared according to the procedure for SR-25604 in 63% overall yield starting with 4-(pyridin-3-yl)piperidin-4-ol and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.84 (s, 1H), 8.66 (d, J=1.6 Hz, 1H), 8.60 (s, 1H), 8.36 (d, J=8.4 Hz, 1H), 8.25 (dd, J=8.0, 1.6 Hz, 1H), 8.08-8.05 (m, 2H), 7.75 (dd, J=5.4, 2.4 Hz, 1H), 7.60-7.53 (m, 4H), 3.80 (dd, J=11.6, 2.4 Hz, 2H), 3.23 (td, J=12.0, 2.0 Hz, 2H), 2.74 (s, 3H), 2.20 (td, J=13.0, 4.4 Hz, 2H), 1.84 (d, J=13.2 Hz, 2H).
This compound was prepared according to the procedure for SR-25604 in 62% overall yield starting with 1-oxa-8-azaspiro[4.5]decane HCl and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.58 (s, 1H), 8.15 (d, J=7.6 Hz, 1H), 8.03-8.00 (m, 2H), 7.42-7.41 (m, 3H), 7.32 (d, J=8.0 Hz, 1H), 3.75 (t, J=6.8 Hz, 2H), 3.49-3.46 (m, 2H), 3.08 (td, J=10.8, 4.0 Hz, 2H), 2.62 (s, 3H), 1.87 (quintet, J=6.8 Hz, 2H), 1.67-1.64 (m, 6H); MS (m/z): [M] calc'd for C23H26N4O3S is 438.17. found 438.7 [M+1].
This compound was prepared according to the procedure for SR-25604 in 50% overall yield starting with 3-hydroxymethylmorpholine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.72 (s, 1H), 8.22 (d, J=7.6 Hz, 1H), 8.06 (d, J=6.4 Hz, 2H), 7.56-7.52 (m, 4H), 4.07 (d, J=12.0 Hz, 1H), 3.98-3.92 (m, 1H), 3.81 (dd, J=11.2, 2.4 Hz, 1H), 3.72-3.68 (m, 2H), 3.59 (dd, J=12.0, 2.4 Hz, 1H), 3.49-3.33 (m, 3H), 2.68 (s, 3H); MS (m/z): [M] calc'd for C20H22N4O4S is 414.14. found 414.6 [M+1].
This compound was prepared according to the procedure for SR-25604 in 56% overall yield starting with 3H-spiro[isobenzofuran-1,4′-piperidine] HCl and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.64 (s, 1H), 8.22 (d, J=7.6 Hz 1H), 8.05-8.03 (m, 2H), 7.45-7.44 (m, 3H), 7.40 (d, J=8.0 Hz, 1H), 7.29-7.24 (m, 3H), 7.18 (dd, J=6.8, 2.0 Hz, 1H), 7.08 (d, J=6.8, 1.6 Hz, 1H), 5.00 (s, 2H), 3.83 (d, J=11.2 Hz, 2H), 3.10 (t, J=11.6 Hz, 2H), 2.70 (s, 3H), 2.02 (td, J=13.0, 5.2 Hz, 2H), 1.77 (d, J=13.2 Hz, 2H); MS (m/z): [M] calc'd for C27H26N4O3S is 486.17. found 487.0 [M+1].
This compound was prepared according to the procedure for SR-25604 in 47% overall yield starting with 4-benzylpiperidin-4-ol and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.55 (s, 1H), 8.22 (dd, J=7.6, 1.2 Hz 1H), 8.01-7.99 (m, 2H), 7.42 (t, J=3.2 Hz, 3H), 7.35 (d, J=8.0 Hz, 1H), 7.31-7.14 (m, 3H), 7.12 (d, J=6.4 Hz, 2H), 3.57 (d, J=12.4 Hz, 2H), 2.97 (t, J=11.2 Hz, 2H), 2.72 (s, 2H), 2.62 (s, 3H), 1.72 (td, J=13.0, 4.2 Hz, 2H), 1.52 (d, J=13.2 Hz, 2H); MS (m/z): [M] calc'd for C27H25N4O3S is 488.19. found 489.1 [M+1].
This compound was prepared according to the procedure for SR-25604 in 59% overall yield starting with 1,4-dioxa-7-azaspiro[4.5]decane and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CDCl3) δ 8.69 (d, J=1.6 Hz, 1H), 8.22 (dd, J=7.6, 1.6 Hz, 1H), 8.06-8.04 (m, 2H), 7.46-7.44 (m, 3H), 7.40 (d, J=8.0 Hz, 1H), 3.95-3.84 (m, 4H), 3.19 (s, 4H), 2.68 (s, 3H), 1.77-1.70 (m, 4H); MS (m/z): [M] calc'd for C22H24N4O4S is 440.15. found 441.1 [M+1].
This compound was prepared according to the procedure for SR-25604 in 42% overall yield starting with 5-pyrimidinemethanamine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.95 (s, 1H), 8.66 (s, 2H), 8.62 (d, J=1.6 Hz, 1H), 8.17 (dd, J=8.0, 1.6 Hz, 1H), 8.07 (dd, J=7.4, 1.4 Hz, 2H), 7.55-7.53 (m, 3H), 7.49 (d, J=8.0 Hz, 1H), 4.26 (s, 2H), 2.68 (s, 3H); MS (m/z): [M] calc'd for C20H15N6O2S is 406.12. found 406.6 [M+1].
This compound was prepared according to the procedure for SR-25604 in 32% overall yield starting with 1-(2-pyridin-4-yl)ethylpiperazine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.64 (d, J=1.6 Hz, 1H), 8.58 (s, 1H), 8.27 (dd, J=8.0, 1.6 Hz, 1H), 8.07-8.04 (m, 2H), 7.62-7.58 (m, 3H), 7.55-7.53 (m, 3H), 3.48-3.47 (m, 4H), 3.28-3.14 (m, 8H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C26H28N6O2S is 488.20, found 488.8 [M+1].
A mixture of 3-fluoro-2-methylbenzene sulfonyl chloride (100 mg, 0.48 mmol), NaHCO3 (403 mg, 4.8 mmol), and N-(2-hydroxyethyl)piperazine (71 μL, 0.58 mmol) in DCM was stirred overnight at room temperature. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography afforded product 2-(4-((3-fluoro-2-methylphenyl)sulfonyl)piperazin-1-yl)ethan-1-ol (164 mg). MS (m/z): [M] calc'd for C13H19FN2O3S is 302.11. found 303.0 [M+1].
Then, a mixture of the product (164 mg) and tribromoisocyanuric acid (66 mg, 0.18 mmol) in TFA (270 μL) stirred overnight at room temperature and then was poured into ice. The aqueous layer was extracted with DCM. The combined organic layers were dried over Na2SO4 and concentrated to dryness to afford the crude product 2-(4-((5-bromo-3-fluoro-2-methylphenyl)sulfonyl)piperazin-1-yl)ethan-1-ol, which was used without further purification. MS (m/z): [M] calc'd for C13H18BrFN2O3S is 382.02/380.02. found 382.9/380.9 [M+1].
Then, a mixture of the crude product, dppf (11 mg, 0.02 mmol), de-ionized water (24 μL), and Zn(CN)2 (45 mg, 0.38 mmol) in DMF (2.4 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd2(dba)3 (7.8 mg, 0.008 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was microwaved in a Biotage© microwave reactor at 115° C. for 30 min under normal absorption conditions. Upon completion, solvent was removed under reduced pressure and the crude product 3-fluoro-5-((4-(2-hydroxyethyl)piperazin-1-yl)sulfonyl)-4-methylbenzonitrile was used without purification. MS (m/z): [M] calc'd for C14H18FN3O3S is 327.11. found 327.8.
Finally, a mixture of the crude product, K2CO3 (68 mg, 0.49 mmol), and benzhydrazide (68 mg, 0.49 mmol) was stirred at 150° C. in a pre-heated oil bath for 4 hours. Purification via prep HPLC followed by column chromatography afforded pure product SR-33604 (13 mg, 6.1% yield over 4 steps). 1H NMR (CD3OD) δ 8.48 (s, 1H), 8.09-8.04 (m, 3H), 7.58-7.52 (m, 3H), 3.70 (t, J=5.6 Hz, 2H), 3.36 (t, J=5.0 Hz, 4H), 2.83 (t, J=4.4 Hz, 4H), 2.74 (t, J=5.6 Hz, 2H), 2.59 (d, J=2.4 Hz, 3H); MS (m/z): [M] calc'd for C21H24FN5O3S is 445.16. found 445.8 [M+1].
This compound was prepared according to the procedure for SR-25604 in 49% overall yield starting with 4-piperidine ethanol and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.60 (s, 1H) 8.22 (d, J=7.6 Hz, 1H), 8.07-8.05 (m, 2H), 7.56-7.52 (m, 4H), 3.78 (d, J=12.4 Hz, 2H), 3.59 (t, J=6.6 Hz, 2H), 2.72 (d, J=12.0 Hz, 2H), 2.68 (s, 3H), 1.80 (d, J=12.0 Hz, 3H), 1.56-1.45 (m, 3H), 1.31-1.24 (m, 2H); MS (m/z): [M] calc'd for C22H26N4O3S is 426.17. found 427.0 [M+1].
A solution of 3-((4-(2-Hydroxyethyl)piperazin-1-yl)sulfonyl-4-methylbenzonitrile (89 mg, 0.29 mmol) in THF was cooled in an ice-water bath under argon. NaH (14 mg, 0.35 mmol) was added and the reaction mixture was stirred for 30 min in the ice-water bath. MeI (21 μL, 0.34 mmol) was added and the reaction mixture was warmed slowly to room temperature overnight. Upon completion, solvent was removed under reduced pressure and purification via column chromatography afforded pure product 3-((4-(2-methoxyethyl)piperazin-1-yl)sulfonyl)-4-methylbenzonitrile (29 mg, 31% yield). MS (m/z): [M] calc'd for C15H21N3O3S is 323.13. found 324.0 [M+1].
Then, a mixture of the product (29 mg, 0.09 mmol), K2CO3 (12 mg, 0.09 mmol), and benzhydrazide (24 mg, 0.18 mmol) in 1-BuOH (90 μL) was stirred at 150° C. in a pre-heated oil bath for 24 hours. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-34533 (12 mg, 30% yield). 1H NMR (CD3OD) δ 8.64 (d, J=1.6 Hz, 1H), 8.24 (dd, J=8.0, 1.6 Hz, 1H), 8.06 (dd, J=7.2, 1.8 Hz, 2H), 7.57-7.51 (m, 4H), 3.50 (t, J=5.4 Hz, 2H), 3.30 (s, 3H), 3.25 (t, J=4.8 Hz, 4H), 2.69 (s, 3H), 2.61-2.58 (m, 6H); MS (m/z): [M] calc'd for C22H27N5O3S is 441.18. found 441.8 [M+1].
This compound was prepared according to the procedure for SR-25604 in 16% overall yield starting with 1-(2N-Boc-aminoethyl)piperazine and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.60 (s, 1H) 8.22 (d, J=7.6 Hz, 1H), 8.06-8.04 (m, 2H), 7.55-7.52 (m, 4H), 3.23 (m, 4H), 3.14 (t, J=6.2 Hz, 2H), 2.62 (s, 3H), 2.57-2.62 (m, 4H), 2.46 (t, J=6.4 Hz, 2H), 1.38 (s, 9H).
This compound was prepared according to the procedure for SR-29224 in 32% overall yield starting with 3-hydroxyazetidine HCl and 5-bromo-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.24 (d, J=2.0 Hz, 1H), 8.08 (d, J=6.4 Hz, 1H), 7.99 (dd, J=7.6, 2.0 Hz, 1H), 7.60 (d, J=8.0 Hz, 1H), 7.42, (s, 1H), 7.23 (dd, J=6.2, 1.4 Hz, 1H), 4.54-4.48 (m, 1H), 3.99 (td, J=7.8, 2.0, 2H), 3.87 (t, J=5.0 Hz, 4H), 3.75-3.69 (m, 6H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C19H23N3O4S is 389.14. found 390.1 [M+H].
piperazin-1-yl)ethan-1-ol (SR-34778)
This compound was prepared according to the procedure for SR-25604 in 32% overall yield starting with N-(2-hydroxyethyl)piperazine and 5-bromo-2,4-dimethylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.36 (s, 1H), 8.06-8.04 (m, 2H), 7.54-7.53 (m, 3H), 7.46 (s, 1H), 3.86 (t, J=5.2 Hz, 2H), 3.61-3.43 (m, 8H), 3.28 (t, J=5.2 Hz, 2H), 2.66 (s, 3H); MS (m/z): [M] calc'd for C22H27N5O3S is 441.18. found 442.2 [M+H].
A mixture of 5-bromo-2-methylphenyl sulfonyl piperazin-1-yl (71 mg, 0.20 mmol), K2CO3 (54 mg, 0.39 mmol), de-ionized water (49 μL), and 2-chloro-pyridine-4-boronic acid (38 mg, 0.24 mmol) in 1,4-dioxane (1.9 mL) was de-gassed and back-filled with argon 3 times at room temperature in a microwave vial. Pd(PPh3)4 (11 mg, 0.01 mmol) was added, the vial was sealed, and the mixture was de-gassed and back-filled with argon. Then, the reaction mixture was stirred for 2 hours at 120° C. in a pre-heated oil bath. Upon completion, solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-34793 (55 mg, 71% yield). 1H NMR (CDCl3) δ 8.45 (dd, J=5.2, 0.4 Hz, 1H), 8.24 (d, J=2.0 Hz, 1H), 7.98 (dd, J=7.8, 1.8 Hz, 1H), 7.80 (d, J=1.2 Hz, 1H), 7.70 (dd, J=5.2, 1.6 Hz, 1H) 7.63 (d, J=8.0 Hz, 1H), 3.87 (t, J=5.2 Hz, 2H), 3.70-3.46 (m, 10H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C18H22ClN3O3S is 395.11. found 396.1 [M+H].
This compound was prepared according to the procedure for SR-34793 in 86% overall yield starting with 5-bromo-4-fluoro-2-methylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.48 (d, J=5.2 Hz, 1H), 8.14 (d, J=7.6 Hz, 1H), 7.72 (s, 1H), 7.61 (dt, J=5.6, 1.4 Hz, 1H), 7.45 (d, J=11.2 Hz, 1H), 3.87 (t, J=5.2 Hz, 2H), 3.48-3.45 (m, 10H), 2.69 (s, 3H); MS (m/z): [M] calc'd for C18H21ClFN3O3S is 413.10. found 414.2 [M+H].
This compound was prepared according to the procedure for SR-34793 in 53% overall yield starting with 5-bromo-2,4-dimethylbenzene sulfonyl chloride. 1H NMR (CD3OD) δ 8.45 (d, J=5.2 Hz, 1H), 7.75 (s, 1H), 7.51 (s, 1H), 7.46 (s, 1H), 7.41 (dd, J=4.6 Hz, 1.2 Hz, 1H), 3.88 (t, J=5.0 Hz, 2H), 3.46 (m, 10H), 2.65 (s, 3H), 2.34 (s, 3H); MS (m/z): [M] calc'd for C19H24ClN3O3S is 409.12. found 409.88 [M+H].
This compound was prepared according to the procedure for SR-34793 in 27% overall yield starting with 1-(2-fluoroethyl)piperazine HCl. 1H NMR (CD3OD) δ 8.44 (d, J=5.2 Hz, 1H), 8.18 (d, J=1.6 Hz, 1H), 7.94 (dd, J=7.8, 1.8 Hz, 1H), 7.78 (s, 1H), 7.68 (dd, J=5.2, 1.6 Hz, 1H), 7.59 (d, J=8.0 Hz, 1H), 4.60 (t, J=4.8 Hz, 1H), 4.48 (t, J=4.6 Hz, 1H), 3.24 (t, J=4.6 Hz, 4H), 2.75 (t, J=4.6 Hz, 1H), 2.69-2.67 (m, 4H), 2.62 (t, J=4.6 Hz, 4H); MS (m/z): [M] calc'd for C18H21ClFN3O2S is 397.10. found 397.88 [M+H].
This compound was prepared according to the procedure for SR-34793 in 24% overall yield starting with N-(3-hydroxypropyl)piperazine. 1H NMR (CD3OD) δ 8.44 (d, J=5.2 Hz, 1H), 8.18 (s, 1H), 7.94 (d, J=8.0 Hz, 1H), 7.78 (s, 1H), 7.68 (dd, J=5.2, 1.6 Hz, 1H), 7.59 (d, J=8.0 Hz, 1H), 3.59 (t, J=6.2 Hz, 2H), 3.23 (m, 4H), 2.69 (s, 3H), 2.57 (m, 4H), 2.50 (t, J=7.2 Hz, 2H), 1.70 (quintet, J=6.8 Hz, 2H); MS (m/z): [M] calc'd for C19H24ClN3O3S is 409.12. found 410.1 [M+H].
This compound was prepared according to the procedure for SR-34793 in 24% overall yield starting with 1-(2,2-difluoroethyl)piperazine. 1H NMR ((CD3)2CO) δ 8.49 (d, J=5.2 Hz, 1H), 8.21 (d, J=2.0 Hz, 1H), 8.02 (dd, J=8.0, 2.0 Hz, 1H), 7.80 (d, J=0.8 Hz, 1H), 7.73 (dd, J=5.2, 1.6 Hz, 1H), 7.63 (d, J=8.0 Hz, 1H), 6.02 (tt, J=55.8, 4.2 Hz, 1H), 3.24 (t, J=5.0 Hz, 4H), 2.86 (td, J=15.2, 4.4 Hz, 2H), 2.74 (t, J=4.8 Hz, 4H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C18H20ClF2N3O2S is 415.09. found 416.2 [M+H].
A mixture of 1-hydroxyhept-6-yn-3-one (31 mg, 0.25 mmol) and Et3N (41 μL, 0.3 mmol) in DCM was cooled in an ice-water bath. Methane sulfonyl chloride (29 μL, 0.37 mmol) was added and the reaction mixture was warmed slowly to room temperature overnight. Upon completion, the solvent was removed under reduced pressure and the residue was re-suspended in ACN (972 μL). 1-((2-Methyl-5-(1H-pyrazol-4-yl)phenyl)sulfonyl)-4-(2-pyridin-4-yl)ethyl)piperazine (40 mg, 0.10 mmol) and Cs2CO3 (38 mg, 0.12 mmol) were added, and then the reaction mixture was stirred overnight at 90° C. in a pre-heated oil bath. Upon completion, the solvent was removed under reduced pressure and purification via prep HPLC followed by column chromatography afforded pure product SR-35186 (7.1 mg, 14% yield). 1H NMR (CD3OD) δ 8.70 (br, 2H), 8.04 (s, 1H), 7.98 (d, J=2.0 Hz, 1H), 7.88 (s, 1H), 7.83 (br, 2H), 7.71 (dd, J=8.0, 1.6 Hz, 7.42 (d, J=8.4 Hz, 1H), 4.61 (t, J=6.6 Hz, 2H), 3.58 (t, J=7.2 Hz, 2H), 3.55-3.36 (m, 10H), 3.03 (t, J=6.8 Hz, 2H), 2.74 (t, J=7.2 Hz, 2H), 2.60 (s, 3H), 2.44-2.40 (m, 2H), 2.24 (t, J=2.6 Hz, 1H); MS (m/z): [M] calc'd for C28H33N5O3S is 519.23. found 520.2 [M+H].
This compound was prepared according to the procedure for SR-34793 in 51% overall yield starting with 1-(2,2,2-trifluoroethyl)piperazine dihydrochloride. 1H NMR ((CD3)2CO) δ 8.48 (d, J=5.2 Hz, 1H), 8.21 (d, J=2.0 Hz, 1H), 8.02 (dd, J=8.0, 2.0 Hz, 1H), 7.80 (t, J=0.8 Hz, 1H), 7.73 (dd, J=5.0, 1.4 Hz, 1H), 7.63 (d, J=8.0 Hz, 1H), 3.24-3.14 (m, 6H), 2.79 (t, J=4.8 Hz, 4H), 2.70 (s, 3H); MS (m/z): [M] calc'd for C18H19ClF3N3O2S is 433.08. found 434.1 [M+H].
This compound was prepared according to the procedure for SR-34793 in 68% overall yield starting with 1-piperazine carboxaldehyde. 1H NMR (CD3OD) δ 8.44 (d, J=5.2 Hz, 1H), 8.24 (d, J=2.0 Hz, 1H), 7.98 (dd, J=8.0, 2.0 Hz, 1H), 7.80 (t, J=1.2 Hz, 1H), 7.70 (dd, J=5.2, 1.6 Hz, 1H), 7.62 (d, J=8.4 Hz, 1H), 3.51 (t, J=5.2 Hz, 4H), 3.33 (m, 4H), 2.69 (s, 3H); MS (m/z): [M] calc'd for C16H18ClN3O2S is 351.08. found 352.3 [M+H].
A mixture of SR-35422 (27 mg, 0.08 mmol), K2CO3 (21 mg, 0.15 mmol), and 1-bromo-2-propanol (10 μL, 0.11 mmol) in ACN was stirred for 3 days at 80° C. in a pre-heated oil bath. Upon completion, the solvent was removed under reduced pressure and purification via column chromatography followed by prep HPLC afforded pure product SR-35464 (8 mg, 25% yield). 1H NMR (CD3OD) δ 8.45 (d, J=5.2 Hz, 1H), 8.25 (d, J=2.0 Hz, 1H), 7.99 (dd, J=8.0, 2.0 Hz, 1H), 7.81 (d, J=0.8 Hz, 1H), 7.70 (dd, J=5.2, 1.6 Hz, 1H), 7.62 (d, J=8.0 Hz, 1H), 4.19-4.14 (m, 1H), 3.90-3.50 (m, 8H), 3.21 (dd, J=13.0, 2.6 Hz, 1H), 3.08 (t, J=11.8 Hz, 1H), 2.70 (s, 3H), 1.22 (d, J=6.4 Hz, 3H); MS (m/z): [M] calc'd for C19H24ClN3O3S is 409.12. found 409.93 [M+H].
This compound was prepared according to the procedure for SR-34793 in 54% overall yield starting with trans-1-allyl-2,5-dimethylpiperazine. 1H NMR (CD3OD) δ 8.45 (d, J=5.2 Hz, 1H), 8.32 (d, J=1.6 Hz, 1H), 7.98 (dd, J=8.0, 2.0 Hz, 1H), 7.81 (s, 1H), 7.71 (dd, J=5.2, 1.2 Hz, 1H), 7.62 (d, J=8.0 Hz, 1H), 6.01-5.91 (m, 1H), 5.67-5.61 (m, 2H), 3.81-3.76 (m, 4H), 3.66 (m, 2H), 3.45 (dd, J=13.2, 4.4 Hz, 2H), 2.65 (s, 3H), 1.30 (br, 3H), 1.22 (d, J=7.2 Hz, 3H); MS (m/z): [M] calc'd for C21H26ClN3O2S is 419.14. found 419.98 [M+H].
This compound was prepared according to the procedure for SR-34793 in 24% overall yield starting with 1-(2-furoyl)piperazine. 1H NMR (CD3OD) δ 8.45 (d, J=5.2 Hz, 1H), 8.23 (d, J=2.0 Hz, 1H), 7.98 (dd, J=8.0, 2.0 Hz, 1H), 7.80 (s, 1H), 7.70 (dd, J=5.6, 1.6 Hz, 1H), 7.66 (d, J=1.2 Hz, 1H), 7.60 (d, J=8.0 Hz, 1H), 7.04 (d, J=3.2 Hz, 1H), 6.57 (dd, J=3.6, 1.6 Hz, 1H), 3.88 (m, 8H), 2.71 (s, 3H); MS (m/z): [M] calc'd for C21H20ClN3O4S is 445.09. found 445.91 [M+H].
The tables below show the structures of specific examples of compounds useful for practice of methods of the invention, associated with corresponding data such as compound identifier, and biological results.
The neuroprotective activity of test compounds was quantified in a cell viability assay (CellTiter-Glo©) assessing the ability of compounds to prevent neuronal death due to NAD deprivation induced by the misfolded protein TPrP. Dose-response profiles were established in the TPrP neuroprotection assay for each compound. PK1 neuroblastoma cells (˜1000 cells/well, 96-well plates) were exposed to TPrP at 5 μg/ml and to compounds at doses ranging 2 nM up to 1.5 μM for 4 days. TPrP was prepared as described in Zhou, et. al., Proc Natl Acad Sci USA 109, 3113-3118 (2012)1. Compounds were added at the doses indicated in 0.5% DMSO final concentration. Cell viability was measured using CellTiter-Glo© (Promega). Efficacious concentrations (EC50 values) were determined. TPrP EC50 for the compounds described herein are shown in Table 6. Dose-response activity curves are shown in
The metabolic stability of some test compounds was determined in hepatic human and mouse microsomes. The compound was incubated with 1 mg/ml human or mouse hepatic microsomes at 37° C. with continuous shaking. Aliquots were removed at various time points between 5 minutes and 2 hours and acetonitrile was added to quench the reactions and precipitate the proteins. Samples were then centrifuged through 0.45 μm filter plates and half-lives were determined by LC-MS/MS. Microsomal stability ≥15 minutes for tested compounds is shown in Table 6.
The ability of some test compounds to activate human NAMPT was tested in a colorimetric NAMPT activity assay (AbCam ab221819). The assay was performed according to the manufacturer's instructions. For compound SR259, mouse NAMPT activity was measured by replacing human NAMPT by mouse NAMPT (Fisher Scientific AG-40B0179-C050). Enzymatic activity rate was calculated by the formula: ((A at T2)−(A at T1))/(T2−T1) where A is the OD450 at each time point T (min). Examples of activation curves are shown in
This application claims the benefit of priority of U.S. Provisional Application No. 63/124,543 filed on Dec. 11, 2020, which is incorporated herein by reference in its entirety and for all purposes.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US21/62954 | 12/10/2021 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63124543 | Dec 2020 | US |
