Set of Geldanamycin Derivatives and Their Preparation Methods

Abstract
A set of geldanamycin derivatives and their preparation methods. Pharmaceutical compositions comprising the said compounds as an active ingredient which are used as antivirus and antitumor agents. The said derivatives are used in the manufacture of heat shock protein 90 (Hsp 90) inhibiting agents which have the utility as antivirus and antitumor agents.
Description
TECHNICAL FIELD

The invention relates to a series of structurally modified derivatives of geldanamycin, the preparation methods of the said compounds, their applications in anti-virus and anti-tumor, and pharmaceutical composition of the said compounds.


BACKGROUND

Geldanamycin is a benzoquinone ansamycin antibiotic generated by fermentation of Streptomyces hygroscopicus. Its molecule composes of a benzoquinone structure and a planar macrocyclic ansamycin bridge. The target of geldanamycin is heat shock protein 90 (Hsp90), it deactivates Hsp90 specifically to inhibit tumor growth or virus replication. Through interfering normal functioning of Hsp90, geldanamycin holds back the activation of the substrate protein of Hsp90, induces interdiction of cell cycle and inhibits virus replication, thereby exerting anti-virus and anti-tumor effects. The unique mechanism of geldanamycin makes itself with broad anti-virus and anti-tumor spectra, it suffers no cross resistance of the subjects with other medicines and its subjects are difficult to generate resistance against it. Geldanamycin is an excellent lead compound for new anti-virus and anti-tumor drugs using cytokine as their targets.


With the study of Hsp90 inhibitor screening as the main object, the Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences carried out a series of studies on geldanamycin, it possesses a patent on the usage of geldanamycin as a anti-virus infection drug (ZL97100523), studied in depth the anti-virus activity and mechanism of geldanamycin, as well as its application development (Li Yuhuan, Tao Pei-Heng et al: Antimicrobial Agents and Chemotherapy, 48(3): 867-872; 2004). On the basis of synthesis and study on the anti-virus effect of geldanamycin 17-Nucleoside derivatives (CN1817866A), the applicant of this invention has further synthesized a series of new 17-modified as well as 17- and 19-simultaneously modified derivatives of geldanamycin, and has tested the anti-virus activities of the compounds. Up to now, no published reports on said modified derivatives of geldanamycin and their anti-virus activities have been seen in the literature in China as well as abroad.


A main object of this invention is to obtain new types of Hsp90 inhibitor with weaker toxicities through introduction of various substitutes in 17- and/or 19-positions of geldanamycin molecules, while they retain or strengthen the original anti-virus activity of geldanamycin. The achievements studied out these new types of Hsp90 inhibitor with weaker toxicities and higher efficiencies can lay a foundation for further studies and developments on anti-virus and anti-tumor medicines with Hsp90 as target.


SUMMARY OF THE INVENTION

This invention provides a series of structurally modified derivatives of geldanamycin, whose structures are shown in Formula (I):







wherein:


R1 is a substituent which has a linkage moiety on its one end consisting of linear or branched, saturated or unsaturated chain containing 3 to 20 carbon atoms and containing or not containing ether, ester or amide bonds in said chain, and the other end of the substituent is an alicyclic or aromatic cyclic group which may optionally be substituted by hydrocarbyl, halogen, hydroxyl, carboxyl, nitrile group, amino, sulfonic or phosphoric acid group or esters or salts thereof;


R2 is H or a same substituent as R1 or a different substituent from R1;


X is NH, O or S; or X—R2 is H.

The preparation of Formula (I) compounds can be realized by using the following general method. The amine containing substituent R1 is synthesized or purchased, and is allowed to react with geldanamycin in a haloalkane, alcoholic or polar aprotic solvent (N,N-dimethylformamide, dimethylsulfoxide, ethyl acetate, acetonitrile, or acetone) and under alkaline condition (triethylamine, pyridine, N, N-dimethylpyridine, potassium carbonate, sodium carbonate, or calcium hydroxide) to obtain 17-mono substituted compound (I, X—R2 is H). The 17-, 19-bisubstituted compounds are prepared by reacting 17-monosubstituted compounds used as material with R2XH under the similar condition to obtain target 17-, 19-bisubstituted compounds (I, both R1 and X—R2 are not H).


When the other side of R1 is 3,4-di-hydroxyl-methylated caffeic acid moiety, the preparation of Formula (I) compounds can be realized according to the following route: firstly, caffeic acid reacts with a methyalting reagent (dimethyl sulfate, methyl methanesulfonate, methyl iodide, dimethyl carbonate) under alkaline condition to obtain 3,4-di-hydroxyl-methylated caffeic acid. The latter is reacted with acyl chlorinating reagent to obtain the acyl chloride, which reacts subsequently with mono N-tert-butoxycarbonyl-ethylenediamine







to obtain (2-tert-butoxycarbonylamino) ethyl-3,4-di-hydroxyl-methylated caffeoyl amide. After removal of tert-Butyl protective group, (2-amino)ethyl-3,4-di-hydroxyl-methylated caffeoylamide is obtained. The latter is subsequently reacted with geldanamycin using the method similar to the aforementioned to produce geldanamycin derivative containing di-hydroxyl-methylated caffeoylamide moiety in the 17-position of the compound.







When the other side of R1 is a cytidine moiety, the preparation of the compounds of Formula (I) structure is as follows: cytidine is reacted with 2,2-dimethoxypropane under acidic condition to obtain 2′,3′-isopropylidene cytidine. Under the effect of a dehydrating reagent (DCC, TBU), the product condensates with γ-tert-Butoxycarbonylamino butyric acid to obtain esterification product of the acid with 2′,3′-isopropylidene cytidine. After removal of the BOC protective group by alcoholysis under acidic catalysis, cytidine γ-aminobutyrate hydrochloride is obtained. Finally, geldanamycin derivative with 17-cytidine moiety is produced by reacting cytidine γ-aminobutyrate hydrochloride with geldanamycin using the method similar to the aforementioned.







When the other side of R1 is a niacinamido moiety, the preparation of the compound of Formula (I) structure is as follows: the nicotinoyl chloride produced by reacting nicotinic acid with acyl chlorination reagent (dichlorosulfoxide) is reacted with 2-(N-tert-butyloxycarbonyl)ethanediamine to obtain 2-(tert-butoxycarbonylamino) ethyl niacinamide. After removal of the protective group under acidic catalysis, (2-amino) ethyl niacinamide is obtained, which is finally reacted with geldanamycin to produce geldanamycin derivatives with 17-niacinamido moiety using the method similar to the aforementioned.







When the other side of R1 is a phosphonate moiety, the preparation of the compound of Formula (I) structure is as follows: Phthalimide potassium salt is reacted with p-tolyl sulfonyloxoalkyl phosphonate diethyl ester in a polar aprotic solvent, to produce N-alkylphosphonate diethyl ester-phthalimide, which further reacts with hydrazine hydrate to produce aminoalkyl phosphonate diethyl ester. Finally, geldanamycin derivative with 17-phosphonate moiety is produced by reacting aminoalkyl phosphonate diethyl ester with geldanamycin using the method similar to the aforementioned.







All compounds comprised in this invention can be prepared according to aforementioned reaction route and method (Table 1).


Compounds having the structure of Formula (I) are tested for their anti-HBV, anti-HIV and anti-HSV activities. Based upon the mechanism of geldanamycin effect on Hsp90, geldanamycin has simultaneously anti-tumor activity.


This invention also provides the pharmaceutical compositions containing said compounds with therapeutically effective amount as the active components and one or more pharmacologically acceptable carriers.


The compounds and compositions provided by this invention can be used to prepare anti-virus and anti-tumor medicines.


Various formulations of the medicinal compositions provided by this invention can be prepared according to the conventional production methods in the realm of pharmacy, for example, mixing of an active ingredient with one or more kinds of carriers, and subsequently prepare the formulations needed.


The medicinal compositions prepared herein are preferably those containing 0.1%-99.5% weight ratio of the active ingredients, the most preferably weight ratio of the active ingredients are in the range of 0.5%-99.5%.


THE EFFECT OF THIS INVENTION

According to the aforementioned reaction routes and methods, a series of new derivatives of geldanamycin described herein can be obtained steadily and reproducibly. The result of tests on the biological activities and pharmacologies showed that the said derivatives has broad-spectrum anti-virus activities, especially showed relatively stronger inhibition effect against HIV-1 and HBV viruses. What is more, the compounds described herein also showed relatively strong inhibition activities against HSV. The structures of the said compounds and their activities measured are shown in Table 1.









TABLE 1







Structures and Anti-virus Activities of the Compounds in This Invention




















Activity of
Activity of








HIV
HBV


No. of


Molecular


inhibition
inhibition


compound
characteristics
MW
formula
R1
R2
IC50, μg/ml
IC50, μg/ml

















GM-APML
purple solid
658.78
C34H50N4O9





H
<0.01
0.064





GM-AEPD
purple solid
656.81
C35H52N4O8





H
<0.01
0.08





GM-ABPD
purple solid
718.88
C40H54N4O8





H
<0.03
0.32





GM-AMPP
purple solid
642.78
C34H50N4O8





H
0.06
8.0





GM-MTA
purple solid
681.86
C38H55N3O8





H
0.04
0.32





GM-GP
purple solid
695.74
C33H50N3O11P





H
1.36
3.24





GM-129
purple solid
653.77
C34H47N5O8





H
1.92
0.32





GM-208
purple solid
728.85
C36H48N4O10S





H
>0.82






GM-217
purple solid
679.76
C36H45N3O10





H
0.16






GM-221
purple solid
655.8
C34H45N3O8S





H
0.06






GM-223
purple solid
643.77
C34H49N3O9





H
0.10






GM-226
purple solid
670.79
C35H50N4O9





H
>0.14
1.6





GM-228
purple solid
656.81
C35H52N4O8





H
0.009
0/01





GM-206S
purple solid
656.81
C35H52N4O8





H
0.01
0.064





GM-210R
purple solid
656.81
C35H52N4O8





H
0.01
0.064





GM-413
purple solid
778.89
C41H54N4O11





H
0.48
0.32





GM-418
purple solid
693.79
C36H47N5O9





H
0.37
0.08





GM-CY
purple solid
856.92
C41H56N6O14





H
0.02
0.032





THFM(R)-GM
purple solid
629.74
C33H47N3O9





H
0.05
0.01





THFM(S)-GM
purple solid
629.74
C33H47N3O9





H
0.06
0.032





THFM-GM
purple solid
629.74
C33H47N3O9





H
0.14
0.01





THFM-GM2
purple solid
728.87
C38H56N4O10










0.24
0.064





THFM-II
purple solid
728.87
C38H56N4O10










>22.2
0.013





THFM + 2
purple solid
728.87
C38H56N4O10










0.18
0.10





GM-W1
purple solid
636.74
C34H44N4O8





H
36.7
0.69





GM-W2
purple solid
651.75
C34H45N5O8





H
19.6
8.0





GM-W3
purple solid
667.68
C31H46N3O11P





H
1.89
1.32





GM-W4
purple solid
654.71
C33H42N4O10





H
0.33
3.2





GM-W5
purple solid
653.74
C30H43N3O11S





H
10.26
6.4





GM-W6
purple solid
633.73
C32H47N3O10





H
1.47
1.32





GM-W7
purple solid
617.73
C32H47N3O9





H
9.89
8.0





GM-W8
purple solid
665.77
C36H47N3O9





H
1.22
1.32





GM-W9
purple solid
665.77
C36H47N3O9





H
2.46
3.2





GM-W10
purple solid
664.79
C36H48N4O8





H
40.71
6.4





GM-W11
purple solid
628.76
C33H48N4O8





H
3.87
8.0





GM-W12
purple solid
633.73
C32H47N3O10





H
0.46
3.2





GM-W13
purple solid
584.66
C30H40N4O8





H
0.65
0.64





GM-W14
purple solid
617.73
C32H47N3O9





H
3.91
0.32





GM-W15
purple solid
617.73
C32H47N3O9





H
1.47
0.01





GM-W16
purple solid
631.76
C33H49N3O9





H
0.43
0.064





GM-W17
purple solid
669.74
C30H43N3O12S





H
23.47
10.3





GM-W18
purple solid
650.76
C35H46N4O8





H
33.41
50.4





GM-W19
purple solid
636.74
C34H44N4O8





H
28.90
3.4





GM-W20
purple solid
636.74
C34H44N4O8





H
26.42
6.89





GM-W21
purple solid
661.78
C37H47N3O8





H
58.97
10.4





GM-W22
purple solid
642.78
C34H50N4O8





H
1.37
3.2





GM-W23
purple solid
642.78
C34H50N4O8





H
0.46
0.32





GM-W24
purple solid
601.69
C30H43N5O8





H
0.11
0.01





GM-W25
purple solid
633.73
C32H47N3O10





H
0.43
0.32





GM-W26
purple solid
632.74
C32H48N4O9





H
0.21
0.64





GM-W27
purple solid
746.93
C42H58N4O8





H
13.81
3.9





GM-W28
purple solid
645.74
C33H47N3O10





H
0.21
0.10





GM-W29
purple solid
631.71
C32H45N3O10





H
0.67
6.4





GM-W30
purple solid
706.87
C39H54N4O8





H
10.89
5.6





GM-W31
purple solid
631.76
C33H49N3O9





H
0.32
0.32





GM-W32
purple solid
650.76
C35H46N4O8





H
0.48
6.4





GM-W33
purple solid
658.78
C34H50N4O9





H
0.23
3.2





GM-W34
purple solid
658.78
C34H50N4O9





H
0.57
0.17





GM-W35
purple solid
643.77
C33H49N5O8





H
3.48
4.36





GM-W36
purple solid
665.77
C36H47N3O9





H
0.29
0.02





GM-W37
purple solid
628.76
C33H48N4O8





H
1.43
1.32





GM-W38
purple solid
705.84
C35H51N5O8





H
1.59
0.64





GM-W39
purple solid
603.7
C31H45N3O9





H
0.22
0.32





GM-W40
purple solid
603.7
C31H45N3O9





H
0.32
0.01





GM-W41
purple solid
603.7
C31H45N3O9





H
0.17
0.32





GM-W42
purple solid
589.68
C30H43N3O9





H
0.091
0.01





GM-W43
purple solid
690.82
C35H54N4O10





H
0.87
0.64





GM-W44
purple solid
711.84
C41H49N3O8





H
>60
>100





GM-W45
purple solid
692.84
C38H52N4O8





H
<1.67
0.32





GM-W46
purple solid
672.81
C35H52N4O9





H
1.32
1.49





GM-W47
purple solid
684.86
C37H56N4O8





H
1.84
3.87





GM-W48
purple solid
614.73
C32H46N4O8





H
3.79
0.64





GM-W49
purple solid
614.73
C32H46N4O8





H
5.41
3.2





GM-W50
purple solid
641.77
C33H43N3O8S





H
1.57
0.64





GM-W51
purple solid
657.8
C34H51N5O8





H
3.48
6.4





GM-W52
purple solid
642.78
C34H50N4O8





H
0.65
0.32





GM-W53
purple solid
641.71
C33H43N3O10





H
0.37
0.46





GM-W54
purple solid
777.9
C45H51N3O9





H
>60
>100





GM-W55
purple solid
707.85
C39H53N3O9





H
15.46
3.2





GM-W56
purple solid
615.71
C32H45N3O9





H
0.14
0.064





GM-W57
purple solid
651.75
C34H45N5O8





H
13.76
8.0





GM-W58
purple solid
631.76
C33H49N3O9





H
1.39
0.64





GM-W59
purple solid
741.87
C42H51N3O9





H
>60
32





GM-W60
purple solid
653.66
C30H44N3O11P





H
0.13
1.32





GM-W61
purple solid
639.63
C29H42N3O11P





H
0.42
0.64





GM-W62
purple solid
709.76
C34H52N3O11P





H
1.76
0.89





GM-W63
purple solid
647.76
C33H49N3O10





H
1.37
3.2





GM-W64
purple solid
673.8
C34H51N5O9





H
3.75
8.6





GM-W65
purple solid
657.79
C35H51N3O9





H
6.81
3.1





GM-W66
purple solid
657.79
C35H51N3O9





H
7.32
3.2





GM-W67
purple solid
657.79
C35H51N3O9





H
4.51
0.64





GM-W68
purple solid
630.73
C32H46N4O9





H
10.46
4.6





GM-W69
purple solid
698.89
C38H58N4O8





H
22.23
10.8





GM-W70
purple solid
679.8
C37H49N3O9





H
24.0
10.8





GM-W71
purple solid
693.83
C38H51N3O9





H
13.21
6.4





GM-W72
purple solid
628.76
C33H48N4O8





H
6.45
3.2





GM-W73
purple solid
619.7
C31H45N3O10





H
0.26
1.43





GM-W74
purple solid
619.7
C31H45N3O10





H
0.47
8.9





GM-W75
purple solid
672.81
C35H52N4O9





H
1.21
0.1





GM-W76
purple solid
656.81
C35H52N4O8





H
0.24
0.01





GM-W77
purple solid
612.67
C30H40N6O8





H
8.97
7.36





GM-W78
purple solid
687.82
C36H53N3O10





H
1.24
0.64





GM-W79
purple solid
801.96
C42H63N3O12





H
1.47
3.2





GM-W80
purple solid
700.82
C36H52N4O10





H
0.97
1.1





GM-W81
purple solid
734.66
C36H45Cl2N3O9





H
2.46
2.3





GM-W82
purple solid
697.81
C37H51N3O10





H
4.87
1.2





GM-W83
purple solid
654.71
C33H42N4O10





H,
3.56
3.2





GM-W84
purple solid
904.18
C52H77N3O10





H
1.24
0.8





GM-W85
purple solid
836.06
C47H69N3O10





H
0.78
0.01





GM-W86
purple solid
663.82
C33H49N3O9S





H
0.22
0.64





GM-W87
purple solid
679.8
C37H49N3O9





H
0.39
0.064





GM-W88
purple solid
639.74
C34H45N3O9





H
0.24
0.08





GM-W89
purple solid
702.84
C39H50N4O8





H
1.68
2.36





GM-W90
purple solid

C38H48N4O8





H
1.23
0.93














EXAMPLES

The technicians in this art are expected to understand this invention more comprehensively by the following examples, however, none of which are intended to limit the scope of the invention.


Example 1
Preparation of 17-(2′-(1″-oxa-4″-azacyclohexyl-1″-)ethylamino)-17-demethoxy geldanamycin (GM-APML)

50 mg geldanamycin (89.29 μmol) is added into 5 mL CHCl3 and 0.5 ml methanol. The mixture is stirred until geldanamycin dissolved to result in an orange solution. 21 mg (164 μmol) 4-(2-aminoethyl)-1-oxa-4-azacyclohexane is subsequently added. After reacting at room temperature for 4 days, the solvent in resultant is evaporated to dryness to obtain dark purple solid. The solid residue is dissolved into 10 mL ethyl acetate and the resulted solution is washed successively with deionized water, saturated NaHCO3 solution, 1 mol/LHCl solution and saturated NaCl solution. The organic phase is added with anhydrate Na2SO4 and is dried overnight. The Na2SO4 is then filtered out and the organic phase is concentrated under reduced pressure. The concentrated solution is then chromatographically separated using a silica gel column, 46.2 mg GM-APML is then obtained (yield 61.2%).



1H-NMR (400 MHz, CDCl3) δ(ppm): 0.9-1.0 (m, 6H, C10-CH3, C14-CH3), 1.28-1.38 (m, 2H, C13-H2), 1.5 (m, 1H, C14-H), 1.64 (m, 2H, C15-H2), 1.78 (s, 3H, C8-CH3), 2.03 (s, 3H, C2-CH3), 2.5 (br, 4H, C17-NH—CH2-CH2-N—), 2.6-2.7 (br, 4H, C17-N—CH2-CH2-O), 2.7-2.8 (m, 1H, C10-H), 3.23 (s, 3H, C12-OCH3), 3.36 (s, 3H, C6-OCH3), 3.44 (d, 1H, J=9.2 Hz, C12-H), 3.5 (br, 1H, C17-NH), 3.58 (d, 1H, J=9.2 Hz, C11-H), 3.64-3.8 (m, 4H, C17 O—(CH2-CH2)-N—), 4.31 (d, 1H, J=10.0 Hz, C6-H), 4.4 (br, 1H, C11-OH), 4.84 (br, 2H, —N H2), 5.19 (s, 1H, C7-H), 5.83 (t, 1H, J=10.4, C5-H) 5.86 (d, 1H, J=9.6, C9-H), 6.58 (t, 1H, J=11.2 Hz, C4-H), 6.96 (d, 1H, J=11.6 Hz, C3-H), 7.15 (br, 1H, C20-NH—CO), 9.19 (s, 1H, C19-H)


Example 2
Preparation of 17-(2′-(1″-azacyclohexyl-1″-)ethylamino)-17-demethoxy geldanamycin(GM-AEPD)

GM-AEPD can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is 2-(1′-azacyclohexyl)ethylamine.


1H-NMR (400 MHz, CDCl3) δ(ppm): 0.82 (1H, m, C14-H), 0.94-1.0 (m, 6H, C10-CH3, C14-CH3), 1.24-1.3 (m, 4H, C13-H2, C15-H2), 1.4-1.5 (m, 2H, C17-N(CH2-CH2)2CH2)), 1.6 (br, 4H, C17-N(CH2-CH2)2CH2), 1.76 (br, 1H, C10-H), 1.78 (s, 3H, C8-CH3), 2.03 (s, 3H, C2-CH3), 2.3-2.4 (br, 4H, C17-N—(CH2-CH2)2CH2), 2.6-2.8 (m, 4H, C17-NH—CH 2-CH2-N), 3.24 (s, 3H, C12-OCH3), 3.38 (s, 3H, C6-OCH3), 3.44 (d, 1H, J=9.2 Hz, C12-H), 3.58 (d, 1H, J=9.2 Hz, C11-H), 3.7 (br, 1H, C17-NH—), 4.31 (d, 1H, J=10.0 Hz, C6-H), 4.5 (br, 1H, C11-OH), 4.80 (br, 2H, —CO—NH2), 5.20 (s, 1H, C7-H), 5.83 (t, 1H, J=10.4, C5-H) 5.94 (d, 1H, J=9.6, C9-H), 6.59 (t, 1H, J=11.6 Hz, C4-H), 6.96 (d, 1H, J=11.6 Hz, C3-H), 7.22 (br, 1H, C20-NH—), 9.19 (s, 1H, C19-H)


Example 3
Preparation of 17-(4′-benzyl-4′-azacyclohexyl amino)-17-demethoxy geldanamycin(GM-ABPD)

GM-ABPD can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is 4′-benzyl-4′-azacyclohexyl amine.



1H-NMR (400 MHz, CDCl3) δ(ppm): 0.94-1.0 (dd, 6H, C10-CH3, C14-CH3), 1.5-1.6 (m, 4H, C17-NH—CH(CH2-CH2)2N—), 1.64 (d, 2H, C15-H2), 1.7 (m, 2H, C13-H2), 1.8 (s, 3H, C8-CH3), 1.9 (s, 2H, C17-NH—CH—(CH2-CH2)2—N—CH2-Ph), 2.03 (s, 3H, C2-CH3), 2.1-2.2 (m, 2H, C17-NH—CH—(CH2-CH2)2—N—CH2-Ph), 2.7-2.8 (m, 3H, C14-CH, C17-NH—CH—(CH2-CH2)2—N—CH2-Ph), 2.87 (br, 1H, C17-NH—CH(CH2-CH2)2N—), 3.26 (s, 3H, C12-OCH3), 3.38 (s, 3H, C6-OCH3), 3.4 (d, 1H, J=9.2 Hz, C12-H), 3.58 (d, 1H, J=9.2 Hz, C11-H), 3.6 (s, 1H, C10-H), 3.9 (br, 1H, C17-NH—), 4.2 (br, 1H, C11-OH), 4.3 (d, 1H, J=10.0 Hz, C6-H), 4.78 (br, 2H, —CO—NH2), 5.17 (s, 1H, C7-H), 5.8-5.9 (m, 2H, C5-H, C9-H), 6.27 (br, 1H, C20-NH—CO), 6.5 (t, 1H, J=11.2 Hz, C4-H), 6.9 (d, 1H, J=11.6 Hz, C3-H), 7.34 (br, 5H, C17-Ph), 9.13 (s, 1H, C19-H)


Example 4
Preparation of 17-(tetrahydropiperazin-4′-yl-methylmino)-17-demethoxy geldanamycin(GM-AMPP)

GM-AMPP can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is tetrahydropiperazin-4′-yl-methylmine. 1H-NMR (400 MHz, DMSO) δ(ppm): 0.6 (d, 3H, C10-CH3), 0.8 (m, 3H, C14-CH3), 0.82-1.08 (m, 5H, C17-N—(CH2-CH2)2—CH—CH2-NH2), 1.24 (m, 2H, C13-H2), 1.5 (m, 1H, C14-H), 1.58 (s, 3H, C8-CH3), 1.60 (d, 2H, C15-H2), 1.8 (s, 3H, C2-CH3), 2.3 (br, 2H, C17-N—(CH2-CH2)2—CH—CH2-NH2), 2.4-2.5 (br, 4H, C17-N—(CH2-CH2)2—), 2.8 (m, 1H, C10-H), 3.18 (br, 6H, C6-OCH3, C12-OCH), 3.28 (d, 1H, J=8.8 Hz, C12-H), 3.38 (d, 1H, J=8.8 Hz, C11-H), 4.36 (t, 1H, C11-OH) 4.82 (d, 1H, J=6.8 Hz, C6-H), 4.82 (br, 2H, —NH2), 5.2 (s, 1H, C7-H), 5.22 (d, 1H, J=10.0, C9-H), 5.4 (t, 1H, J=10.4, C5-H), 6.4 (br, 2H, C17-CH2-NH2), 6.55 (t, 1H, J=11.2 Hz, C4-H), 6.99 (br, 1H, C20-NH—CO), 7.1 (s, 1H, C19-H), 7.12 (d, 1H, J=11.0 Hz, C3-H), 7.4, 7.7 (s,s, 2H, —CO—NH2)


Example 5
Preparation of 17-(myrtanylamino)-17-demethoxy geldanamycin (GM-MTA)

GM-MTA can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is myrtanylamine.



1H-NMR (400 MHz, CDCl3) δ(ppm): 0.87 (d, 3H, C14-CH3), 0.95 (d, 3H, C10-CH3), 1.02 (s, 3H, MTA-9′CH3), 1.24 (s, 3H, MTA-10′CH3), 1.5-1.6 (m, 3H, MTA-5′CH2,2′-CH), 1.72 (m, 1H, C14-CH), 1.80 (s, 3H, C8-CH3), 1.8-2.0 (m, 6H, MTA-3′CH2, 7′CH2, C15-CH2), 2.02 (s, 3H, C2-CH3), 2.32 (m, 1H, C17-6′CH), 2.42 (m, 2H, C13-CH2), 2.65 (d, 1H, C10-CH), 2.74 (m, 1H, C17-4′CH), 3.374 (s, 3H, C12-OCH3), 3.370 (s, 3H, C6-OCH3), 3.6-3.4 (m, 4H, C11-H, C12-H, C17-NH—CH2-), 4.3 (d, 2H, J=10 Hz, C6-H), 4.37 (br, 1H, C11-OH), 4.76 (br, 2H, C1-CO—NH2), 5.20 (s, 1H, C7-H), 5.857 (t, 1H, J=11.2 Hz, C5-H), 5.904 (d, 1H, J=10 Hz, C9-H), 6.38 (br, 1H, C20-NH—CO), 6.58 (t, 1H, J=11.4 Hz, C4-H), 6.97 (d, 1H, J=11.6 Hz, C3-H), 9.19 (s, 1H, C19-H)


Example 6
Preparation of 17-diethyloxy phosphoryl methylene amino-17-demethoxy geldanamycin (GM-AP)

1.1 g (3.4 mmol) p-benzylsulfonyl methylene phosphonate diethyl ester is dissolved into 15 ml DMF. 0.9 g (4.8 mmol) Phthalimide potassium salt is added into the resulted solution and mixed under stirring. The mixture is heated to make temperature gradually to 90° C. The material disappears after reacting for 2 h, then make the resultant return to room temperature. The solvent in the resultant is evaporated to dryness under reduced pressure. The residue is separated chromatographically using a silica gel column to obtain 500 mg yellow solid product aminomethylene phosphonate diethyl ester-phthalimide.


200 mg (0.7 mmol) of the product obtained from the previous procedure is dissolved in 15 ml ethanol, is added with 0.1 ml (2 mmol) hydrazine hydrate and is allowed to react for 4 h at room temperature. The resultant is evaporated to dryness under reduced pressure, then ethyl acetate is added into the residue, mixed and filtered out the solid. The filtrate is then separated using a silica gel column to obtain 80 mg of colorless oily product aminomethylene phosphonate diethyl ester.


The product aminomethylene phosphonate diethyl ester is subsequently reacted with geldanamycin to obtain the product GM-AP according to the procedure similar to that used in Example 1.



1H-NMR (300 MHz, CDCl3) δ(ppm): 0.94-1.04 (dd, 6H, C10-CH3, C14-CH3), 1.36 (dt, 6H, —PO(OCH2CH3)2), 1.6-1.8 (br, 1H, C17-NH—CH2-), 1.8 (d, 6H, C8-CH3, C2-CH3), 2.03 (br, 3H, C13-H2, C14-H), 2.18 (s, C10-H—), 2.35 (m, 1H, C9-H), 2.7 (m, 2H, C15-CH2), 3.28 (s, 3H, C12-OCH3), 3.36 (s, 3H, C6-OCH3), 3.43 (d, 1H, J=9.2 Hz, C12-H), 3.58 (d, 1 H, J=9.2 Hz, C11-H), 3.9-4.0 (dd, 2H, C17-NH—CH2-P), 4.15-4.2 (five, 4H, —PO(OCH2C H3)2), 4.3 (d, 1H, J=10.0 Hz, C6-H), 4.78 (br, 2H, —CO—NH2), 5.27 (s, 1H, C7-H), 5.8 (d, 1H, C5-H), 5.9 (d, 1H, C9-H), 6.3 (br, 1H, C20-NH—CO), 6.6 (t, 1H, J=11.2 Hz, C4-H), 6.9 (d, 1H, J=11.6 Hz, C3-H), 9.07 (s, 1H, C19-H)


Example 7
Preparation of 17-(3′-(1″-imidazolyl)propylamino)-17-demethoxy geldanamycin(ZJH061129)

ZJH061129 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is N-(3-aminopropyl) imidazole. ZJH061129 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is N-(3-aminopropyl) imidazole.



1H-NMR (400M, CDCl3) δ(ppm): 0.87 (d, 3H, J=6.5 Hz, CH3); 0.99 (d, 3H, J=7.0 Hz, CH3); 1.64-1.72 (m, 3H, CH, CH2); 1.79 (s, 3H, CH3); 2.02 (s, 3H, CH3); 2.11-2.22 (m, 3H, imidazole NCHa, CH2); 2.62-2.65 (m, 1H, OCH); 2.72-2.75 (m, 1H, CH); 3.27 (s, 3H, OCH3); 3.35 (s, 3H, OCH3); 3.42-3.43 (m, IH, OCH); 3.48-3.54 (m, 3H, imidazole NCHb, NCH2); 4.04-4.14 (m, 2H, CH2); 4.28-4.31 (m, 1H, OCH); 5.18 (s, 1H, OCH); 5.84-5.88 (m, 2H, 2×═CH); 6.19-6.21 (m, 1H, Ar—H); 6.55-6.60 (m, 1H, ═CH); 6.92-6.95 (m, 1H, ═CH); 7.11 (s, 1H, Ar—H); 7.51 (s, 1H, Ar—H); 9.12 (s, 1H, Ar—H).


MS(ESI): m/z=654 (M+1).


Example 8
Preparation of 17-(4″-aminosulfonyl)phenylethylamino-17-demethoxy geldanamycin(ZJH061208)

ZJH061208 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is 4-aminoethyl benzenesulfonamide.



1H-NMR (400 M, CDCl3) δ(ppm): 0.94 (d, 3H, C14—CH3); 1.00 (d, 3H, C10—CH3); 1.24-1.31 (m, 2H, C13—H2); 1.79 (s, 3H, C8—CH3); 2.02 (s, 3H, C2—CH3); 2.31-2.37 (m, 1H, C10—H); 2.66-2.69 (m, 1H, C11—H); 2.72-2.75 (m, 1H, C14—CH); 3.03-3.06 (m, 2H, C24—CH2); 3.27 (s, 3H, C12—OCH3); 3.36 (s, 3H, C6—OCH3); 3.43-3.58 (m, 2H, C15—CH2); 3.76-3.86 (m, 2H, C25—CH2); 4.11-4.13 (m, 1H, C12—CH); 4.31 (d, 1H, C6—CH); 5.19 (s, 1H, C7—CH); 5.84-5.89 (m, 2H, C5—CH, C9—CH); 6.55-6.61 (m, 1H, C4—CH); 6.95 (d, 1H, C3—CH); 7.38 (d, 2H, C27—CH, C31—CH); 7.91 (d, 2H, C28—CH, C30—CH); 9.14 (s, 1H, C19—CH).


MS(ESI):m/z=767.0 (M+K), 751.0 (M+Na).


Example 9
Preparation of 17-(3′,4′-(Methylenedioxy)benzylamino)-17-demethoxygeldanamycin(ZJH061217)

ZJH061217 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is 3,4-(Methylenedioxy)benzylamine (piperonylamine).



1H-NMR (400 M, CDCl3) δ(ppm): 0.99-1.03 (m, 6H, 2CH3); 1.80 (s, 3H, CH3); 2.03 (s, 3H, CH3); 2.41-2.47 (m, 1H); 2.68 (d, 1H); 2.73-2.77 (m, 1H); 2.88 (br, 1H); 2.95 (br, 1H); 3.27 (s, 3H, OCH3); 3.37 (s, 3H, OCH3); 3.44-3.60 (m, 2H, CH2); 4.18 (br, 1H, OH); 4.31 (d, 1H, J=10 Hz); 4.48-4.68 (m, 2H, CH2); 4.79 (br, 2H, NH2); 5.19 (s, 1H); 5.84-5.93 (m, 2H, 2CH); 5.99 (d, 2H); 6.36 (br, 1H); 6.58 (t, 1H, J=11.5 Hz); 6.73-6.82 (m, 3H, 3CH); 6.96 (d, 1H, J=12 Hz); 7.30 (s, 1H); 8.02 (br, 1H); 9.16 (s, 1H).


MS(ESI):m/z=718.2 (M+K), 702.2 (M+Na), 679.2 (M+).


Example 10
Preparation of 17-(2′-thienylethylamino)-17-demethoxy geldanamycin (ZJH061221)

ZJH061221 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is 2-aminoethyl thiophene.



1H-NMR (400 M, CDCl3) δ(ppm): 0.95-1.00 (m, 6H, 2CH3); 1.79 (s, 3H, CH3); 2.02 (s, 3H, CH3); 2.35-2.41 (m, 1H); 2.68-2.76 (m, 2H, 2CH); 2.95 (s, 2H); 3.16-3.20 (t, 2H, CH2); 3.26 (s, 3H, OCH3); 3.36 (s, 3H, OCH3); 3.43-3.58 (m, 2H, CH2); 3.76-3.84 (m, 2H, CH2); 4.30 (d, 1H, J=10 Hz); 4.84 (br, 2H, NH2); 5.18 (s, 1H); 5.83-5.90 (m, 2H, 2CH); 6.36 (br, 1H, NH); 6.57 (t, 1H, J=11.5 Hz); 6.90-6.98 (m, 3H, 3CH); 7.21 (d, 1H, J=Hz); 7.61 (d, 1H, J=15.5 Hz); 8.01 (br, 1H, OH); 9.14 (s, 1H).


MS(ESI):m/z=678.2 (M+Na), 656.2 (M+H), 624.2 (M−33, −OCH3).


Example 11
Preparation of 17-(trans-4′-hydroxyl cyclohexylamino)-17-demethoxy geldanamycin(ZJH061223)

ZJH061223 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is trans-4-amino cyclohexanol.



1H-NMR (400 M, CDCl3) δ(ppm): 0.97-1.01 (m, 6H, 2CH3); 1.38-1.57 (m, 2H, 2CH); 1.77 (m, 1H, CH); 1.80 (s, 5H, CH3+2CH); 2.00 (m, 2H, 2CH); 2.03 (s, 3H, CH3); 2.09-2.11 (d, 2H, 2CH); 2.16-2.22 (m, 1H); 2.72-2.77 (m, 2H, 2CH); 3.27 (s, 3H, OCH3); 3.38 (s, 3H, OCH3); 3.45-3.60 (m, 2H, CH2); 3.72 (m, 2H, CH2); 3.88 (m, 1H); 4.31 (d, 1H, J=10 Hz); 4.74 (br, 2H, NH2); 5.19 (s, 1H); 5.84-5.92 (m, 2H, 2CH); 6.25 (br, 1H, NH); 6.58 (t, 1H, J=11.5 Hz); 6.94-7.00 (m, 1H); 7.28 (s, 1H); 9.17 (s, 1H).


MS(ESI):m/z=667.3 (M+Na), 644.3 (M+).


Example 12
Preparation of 17-(3′-(2″-pyrrolidonyl) propylamino)-17-demethoxy geldanamycin(ZJH061226)

ZJH061226 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is N-(3′-aminopropyl)-2-pyrrolidone.



1H-NMR (400 M, CDCl3) δ(ppm): 0.98-1.00 (m, 6H, 2CH3); 1.25 (s, 1H); 1.80 (s, 3H, CH3); 1.83-1.88 (m, 2H, CH2); 2.02 (s, 3H, CH3); 2.07 (t, 2H, CH2, J=Hz); 2.31-2.38 (m, 1H); 2.42 (t, 2H, CH2, J=Hz); 2.66 (d, 1H); 2.72-2.76 (m, 1H); 3.26 (s, 3H, OCH3); 3.36 (s, 3H, OCH3); 3.37-3.46 (m, 5H, 2CH2+CH); 3.54-3.58 (m, 3H, CH2+CH); 4.30 (d, 1H, J=Hz); 4.80 (br, 2H, NH2); 5.18 (s, 1H); 5.83-5.92 (m, 2H, 2CH); 6.55-6.61 (t, 1H, J=Hz); 6.72 (br, 1H, NH); 6.95 (d, 1H, J=Hz); 7.24 (s, 1H); 7.26 (s, 1H); 9.15 (s, 1H);


Example 13
Preparation of 17-(2″-(N-ethyl pyrrolidinyl)-methylamino)-17-demethoxy geldanamycin(ZJH061228)

ZJH061228 can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is 2-aminomethyl-1-ethylpyrrole.



1H-NMR (400 M, CDCl3) δ(ppm): 0.96-1.01 (m, 3H, CH3); 1.09-1.14 (s, 3H, CH3); 1.54 (s, 3H, CH3); 1.50-1.52 (m, 2H, CH2); 1.70-1.82 (m, 2H, CH2); 1.81 (s, 3H, CH3); 1.90-2.00 (m, 1H, CH); 2.03 (s, 3H, CH3); 2.21-2.29 (m, 2H, CH2); 2.35-2.46 (m, 1H, CH); 2.65-2.80 (m, 3H, NCH2, NCH); 3.27 (s, 3H, OCH3); 3.37 (s, 3H, OCH3); 3.41-3.76 (m, 4H, 2×NCH2); 4.32 (d, 1H, J=10 Hz, OCH); 4.51-4.20 (m, 1H, OCH); 4.20-4.35 (br); 5.19 (s, 1H, OCH); 5.83-5.94 (m, 2H, Ar—CH2); 6.59 (t, 1H, J=11.2 Hz, ═CH); 6.96 (d, 1H, J=11.2 Hz, ═CH); 7.16-7.21 (m, 1H, ═CH); 7.26-7.32 (m, 1H, ═CH); 9.21-9.22 (s, s, 1H, Ar—H).


MS(ESI):m/z=657 (M+1).


Example 14
Preparation of 17-(2″S-2″-(N-ethylpyrrolidinyl)-methylamino)-17-demethoxy geldanamycin(ZJH071206S)

ZJH071206S can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is (S)-2-aminomethyl-1-ethylpyrrole.



1H-NMR (400 M, CDCl3) δ(ppm): 0.82-0.89 (m, 3H, CH3); 0.95-1.00 (m, 3H, CH3); 1.08-1.14 (m, 3H, CH3); 1.25-1.30 (m, H,); 1.80 (s, 3H, CH3); 2.02 (s, 3H, CH3); 2.35-2.41 (m, 1H); 2.68-2.76 (m, 2H, 2CH); 2.95 (s, 2H); 3.16-3.20 (t, 2H, CH2); 3.26 (s, 3H, OCH3); 3.36 (s, 3H, OCH3); 3.43-3.58 (m, 2H, CH2); 3.76-3.84 (m, 2H, CH2); 4.30 (d, 1H, J=10 Hz); 4.84 (br, 2H, NH2); 5.18 (s, 1H); 5.83-5.90 (m, 2H, 2CH); 6.36 (br, 1H, NH); 6.57 (t, 1H, J=11.5 Hz); 6.90-6.98 (m, 3H, 3CH); 7.21 (d, 1H, J=Hz); 7.61 (d, 1H; J=15.5 Hz); 8.01 (br, 1H, OH); 9.14 (s, 1H).


MS (ESI):m/z=678.2 (M+Na), 656.2 (M+H), 624.2 (M-33, —OCH3).


Example 15
Preparation of 17-(2″R-2″-(N-ethylpyrrolidinyl)-methylamino)-17-demethoxy geldanamycin(ZJH071210R)

ZJH071210R can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is (R)-2-aminomethyl-1-ethylpyrrole.



1H-NMR (600 M, CDCl3) δ(ppm): 0.83-0.89 (m, 6H, 2CH3); 1.00 ( ) 1.80 (s, 3H, CH3); 2.02 (s; 3H, CH3); 2.35-2.41 (m, 1H); 2.68-2.76 (m, 2H, 2CH); 2.95 (s, 2H); 3.16-3.20 (t, 2H, CH2); 3.26 (s, 3H, OCH3); 3.36 (s, 3H, OCH3); 3.43-3.58 (m, 2H, CH2); 3.76-3.84 (m, 2H, CH2); 4.30 (d, 1H, J=10 Hz); 4.84 (br, 2H, NH2); 5.18 (s, 1H); 5.83-5.90 (m, 2H, 2CH); 6.36 (br, 1H, NH); 6.57 (t, 1H, J=11.5 Hz); 6.90-6.98 (m, 3H, 3CH); 7.21 (d, 1H, J=Hz); 7.61 (d, 1H, J=15.5 Hz); 8.01 (br, 1H, OH); 9.14 (s, 1H).


MS (ESI):m/z=678.2 (M+Na), 656.2 (M+H), 624.2 (M×33, ×OCH3).


Example 16
Preparation of 17-(2′-(3″,4″-dimethylcaffeoyl amido)ethylamino)-17-demethoxy geldanamycin(ZJH070413)

1.8 g (0.01 mol) caffeic acid is added into 15 mL purified water and the resulted solution is adjusted to pH 13 using 30% NaOH to dissolve completely caffeic acid. 6 g dimethyl sulfate (0.05 mol) is added into the solution which is reacted at room temperature for 10 h with stirring and adjusting pH to higher than 10 at intervals, then adjusting pH to 3 using 2N HCl. After filtering the resultant, the solid is washed with water until the water filtered out reaches a pH of 6-7. The solid is dried to obtain 3,4-dimethyl caffeic acid.


5.25 g ethylenediamine is added into a 250 mL three necked flask, then 30 mL 1,4-dioxane is added and stirred. To the flask the solution of 2.45 g di-tert-butyl carbonate in 30 mL 1,4-dioxane is added dropwise at room temperature and under nitrogen protection. After reacting for 2 h, the resultant is evaporated to dryness under reduced pressure. 50 mL purified water is added into the residues under stirring and white solid precipitate can be seen. The precipitates are filtered and washed with water. The filtrate is extracted 3 times with 50 mL methylene chloride. The extractants are pooled and dried on anhydrous sodium sulfate, then filtered. The filtrate is evaporated to dryness to obtain colorless oily liquid. The product is separated chromatographically with a silica gel column to obtain mono-N-tert-butyloxycarbonylethylenediamine.


0.208 g (0.001 mol) 3,4-dimethyl caffeic acid is added into 3 mL dichlorosulfoxide and the mixture is reacted at 50° C. for 4 h. The resultant is evaporated into dryness under reduced pressure using an aspirator pump. 5 mL methylene dichloride is subsequently added to the residues and, the mixture is stirred. The solution of 0.160 g mono-N-tert-butyloxycarbonyldiamino ethane in 4 mL pyridine is added to the mixture and the resulted mixture is allowed to react for 3 h at room temperature. The resultant is filtered and the filtrate is washed successively with saturated NaHCO3 solution and water. Then it is dried on anhydrous sodium sulfate and subsequently filtered. The filtrate is evaporated to dryness and separated chromatographically using a silica gel column to obtain (2-tert-butoxycarbonylamino)ethyl-3,4-dimethyl caffeoylamide.


2 mL methanol is added into 3-necked flask placed in an ice bath and 1 mL acetyl chloride is added dropwise into it. The mixture is subsequently stirred to react at room temperature for 30 min. The methanol solution of 0.263 g (0.75 mmol) (2-tert-butoxycarbonyl amino)ethyl-3,4-dimethyl caffeoylamide is added dropwise into the resultant and the resulted mixture is allowed to react completely at room temperature for 3 h, The resultant is filtered and washed with methanol. The filtrate is evaporated to dryness under reduced pressure and is added with petroleum ether to precipitate yellow solid. The latter is filtered out and washed successively with ethyl acetate and chloroform. The resulted solid is dried over heat to obtain (2-amino)ethyl-3,4-di-hydroxyl-methylated caffeoyl amide hydrochloride.


50 mg (89.29 μmol) geldanamycin is added into 5 mL CHCl3 and 0.5 mL methanol and the mixture is stirred until the geldanamycin dissolved to form an orange solution. 75 mg (260 μmol) of the N-aminoethyl-3,4-dimethylated caffeoylamide hydrochloride produced with the previous procedure and 0.5 mL triethylamine are added into the solution. The mixture is allowed to react for 3 days at room temperature and the solvent in it is evaporated to dryness to obtain purple solid. The product is separated chromatographically using a silica gel column to obtain 55.2 mg 17-(2′-(3″,4″-dimethylated caffeoylamido) ethylamino)-17-de-methoxy geldanamycin (ZJH070413) (79.4%).



1H-NMR (500 M, CDCl3) δ(ppm): 0.98 (m, 6H, 2CH3); 1.80 (s, 3H, CH3); 2.02 (s, 3H, CH3); 2.37-2.42 (m, 1H); 2.65 (d, 1H); 2.72-2.76 (m, 1H); 3.07-3.12 (m, 2H, CH2); 3.26 (s, 3H, OCH3); 3.35 (s, 3H, OCH3); 3.57-3.58 (m, 2H, CH2); 3.71-3.85 (m, 2H, CH2); 3.90 (s, 6H, 2CH3); 4.25 (br, 1H, OH); 4.30 (d, 1H, J=10 Hz); 4.80 (br, 1H, NH); 5.18 (s, 1H); 5.84-5.90 (m, 2H, 2CH); 6.15-6.17 (m, 1H); 6.30 (d, 1H, J=15.5 Hz); 6.57 (t, 1H, J=11.5 Hz); 6.83-6.84 (m, 1H); 6.86 (d, 1H, J=8 Hz); 6.94 (d, 1H, J=12 Hz); 7.02 (s, 1H); 7.08 (d, 1H, J=8 Hz); 7.24 (s, 1H); 7.61 (d, 1H, J=15.5 Hz); 9.13 (s, 1H); 12.00 (br, 4H, CONH).


Example 17
Preparation of 17-(2′-nicotinamidoethylamino)-17-demethoxy geldanamycin(ZJH070418)

Mono-N-tert-butoxycarbonyldiamino ethane can be prepared according to the procedure provided in Example 16.


1.85 g (0.015 mol) nicotinic acid is added into 5 mL methylene chloride under stirring and it is not dissolved. 4.4 mL (0.06 mol) dichlorosulfoxide is added into the mixture and the resulted mixture is allowed to react for 4 h at 50° C. under nitrogen protection and with refluxing in a oil bath. Then the oil bath is removed and the resultant is filtered. The solid residue is washed with methylene chloride to obtain nicotinoyl chloride as white acicular crystals.


2.4 g mono-N-tert-butoxycarbonyldiamino ethane (0.015 mol) is added into 2 ml methylene chloride and 2 mL tetrahydrofuran. With stirring, 5 mL triethylamine and the solid nicotinoyl chloride obtained in the previous procedure are successively added. The mixture is allowed to react completely at room temperature for 3 h. Then the resultant is filtered and subsequently washed with methylene chloride to obtain a viscous liquid. The product is separate chromatographically using a silica gel column to obtain (2-tert-butoxycarbonylamino)ethyl nicotinylamide.


4 ml anhydrous methanol is added into 3-necked flask placed in an ice bath, then 2 mL acetyl chloride is added dropwise. The mixture is allowed to react subsequently at room temperature for 30 min. 0.53 g (2 mmol) (2-tert-butoxycarbonylamino)ethyl nicotinylamide solution in methanol is added into the resultant and the resulted mixture is allowed to react completely at room temperature for 30 min. After filtering and washing the resultant with ethyl acetate, the white solid obtained is (2-amino) ethyl nicotinylamide.


50 mg geldanamycin (89.29 μmmol) is added into 5 mL CHCl3 and 0.5 mL methanol, then geldanamycin is dissolved with stirring to make the orange reactive solution. 44 mg (2-amino)ethyl nicotinylamide (153 μmol) obtained from the previous procedure and 0.5 ml triethylaime is added into said reactive solution. The resulted mixture is allowed to react at room temperature for 2 days, then the resultant solution is evaporated to dryness to obtain purple solid. The product is separated is chromatographically using a silica gel column to obtain 58.3 mg (94.2%) of 17-(2′-nicotinylamioethylamino)-17-demethoxy geldanamycin (ZJH070418).



1H-NMR (500 M, CDCl3) δ(ppm): 0.98-0.99 (m, 6H, 2CH3); 1.80 (s, 3H, CH3); 2.02 (s, 3H, CH3); 2.42-2.46 (m, 1H); 2.65 (d, 1H); 2.72-2.76 (m, 1H); 3.09-3.12 (m, 2H, CH2); 3.27 (s, 3H, OCH3); 3.35 (s, 3H, OCH3); 3.42-3.57 (m, 2H, CH2); 3.79-3.93 (m, 4H, 2CH2); 4.30 (d, 1H, J=10 Hz); 4.80 (br, 2H, NH2); 5.17 (s, 1H); 5.30 (br, 1H); 5.84-5.90 (m, 2H, 2CH); 6.57 (t, 1H, J=11.5 Hz); 6.93-6.95 (d, H, CH); 7.21 (s, 1H); 7.53 (s, 1H); 8.44 (d, 1H, J=15.5 Hz); 8.76 (s, 1H); 9.13 (s, 1H); 9.34 (s, 1H); 11.89 (br, 3H, 3NH).


Example 18
Preparation of 17-(4′-((5″-(4′″-amino-2′″-oxopyrimidine-1′″-(2H)-yl)-3″,4″-dihydroxyl-tetrahydrofuran-2″yl)methoxyl)-4′-oxobutylamino)-17-de methoxy geldanamycin(GM-CY)

The primary amino group of the γ-aminobutyric acid is protected with Boc2O to obtain γ-tert-butoxycarbonylamino butyric acid according to the literature (Zhao Zhizhong et al. Protecting Groups in Organic Chemistry, Science Press, 1984: 41-49).


0.476 g p-toluenesulfonic acid (2.5 mmol) is added into 10 mL acetone. After dissolution of the solid, 1.5 mL 2,2-dimethoxy propane (12 mmol) and 0.486 g cytidine (2 mmol) are further added into the solution. The mixture is allowed to react with stirring at room temperature for 1.5 h. The reaction produce is large amount of white solid, which is filtered out and dried over heat to obtain 2′,3′-isopropylidenecytidine p-toluenesulfonate, which is reserved for further synthesis.


0.457 g γ-tert-butoxycarbonylaminobutyric acid (2.25 mmol) is added into 5 mL CHCl3. After dissolving, 0.6 g dicyclohexylcarbodiimide (DCC) (2.91 mmol) is added into the solution with stirring at room temperature to appear white precipitates in the solution. After reacting for 4 h, the white precipitates are filter out and the collected filtrate containing γ-butoxycarbonylaminobutyric anhydride is reserved for further synthesis.


Isopropylidenecytidine p-toluenesulfonate is placed into a 100 mL round-bottom flask. 15 mL methylene chloride and 1 mL triethylamine are added into the flask, then the mixture is stirred until the solid dissolved. The filtrate from the previous synthesis is transferred into the flask. The resulted mixture is reacted under nitrogen protection for 30 h with stirring, then the insoluble materials are filtered out. The resultant filtrate is condensed under reduced pressure with a vacuum oil pump to obtain yellowish viscous liquid, which is separated chromatographically with a silica gel column to obtain esterification product of 2′,3′-isopropylidenecytidine with γ-butoxycarbonylaminobutyric acid.


4 ml anhydrous methanol is added into a three-necked flask, cooled in an ice bath and 2 mL acetyl chloride is added dropwise into the flask. The mixture is allowed to react for 30 min after completion of the dropping. Methanol solution of 50 mg to (0.107 mmol) the esterification product of 2′,3′-isopropylidenecytidine with γ-butoxycarbonylaminobutyric acid is added into the flask and is allowed to react completely for 30 min at room temperature. The resultant is filtered and the solid is washed with ethyl acetate to obtain white solid cytidine γ-amino butyrate hydrochloride.


50 mg geldanamycin (89.29 μmmol) is added into 5 mL CHCl3 and methanol 0.5 ml, then the mixture is stirred until geldanamycin dissolved and the color of the liquid turns orange. 80.2 mg cytidine γ-amino butyrate hydrochloride (200 μmol) is added into the orange liquid and the resulted mixture is allowed to react for 3 days at room temperature. The solvent in resultant is evaporated to dryness to obtain dark purple solid. The solid residue is dissolved into 10 mL ethyl acetate and is washed successively with deionized water, saturated NaHCO3 solution, 1 mol/L HCl solution and saturated NaCl solution. The organic phase is dried overnight on anhydrous Na2SO4. Then the anhydrous Na2SO4 is filtered out and the organic phase is concentrated under reduced pressure. The product is separated chromatographically using a silica gel column to obtain 17-(4′-((5″-(4′″-amino-2′″-oxopyrimidine-1′″-(2H)-yl)-3″,4″-dihydroxyl-tetrahydrofuran-2″-yl)methoxy)-4′-oxobutylamino)-17-demethoxy geldanamycin.



1H-NMR (400 M, CDCl3) δ(ppm): 0.94-1.00 (m, 6H, 2CH3); 1.24-1.30 (m, 2H, CH2); 1.64-1.67 (m, 2H, CH2); 1.80 (s, 3H, CH3); 2.02 (s, 3H, CH3); 2.38 (t, 2H, CH2); 2.41-2.47 (m, 1H); 2.66-2.75 (m, 1H); 2.72-2.76 (m, 1H); 2.98 (t, 2H, CH2); 3.27 (s, 3H, OCH3); 3.37 (s, 3H, OCH3); 3.42-3.59 (m, 3H, CH+CH2); 3.62-3.66 (m, 1H); 3.78-3.81 (m, 1H); 3.89-3.94 (m, 2H, CH2); 4.08-4.11 (m, 1H); 4.31 (d, 1H); 4.81 (br, 2H, NH2); 4.95 (br, 1H, OH); 5.19 (s, 1H); 5.26 (br, 1H, OH); 5.69 (d, 1H); 5.75 (d, 1H); 5.84-5.90 (m, 2H, 2CH); 6.55-6.61 (m, 1H); 6.93-6.95 (d, 1H); 7.11 (br, 2H, NH2); 7.28 (s, 1H); 7.82 (d, 1H); 9.14 (br, 1H, NH).


MS(ESI):m/z=857.3 (M+), 880.3 (M+Na).


Example 19
Preparation of 2′R-17-tetrahydrofurfurylamino-17-demethoxy geldanamycin(THFM(R)-GM)

THFM(R)-GM can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is (R)-tetrahydrofurfurylamine.



1H-NMR (400 M, CDCl3) δ(ppm): 0.9-1.0 (m, 6H, 2CH3); 1.25 (s, 2H, CH2); 1.4-1.5 (m, 1H); 1.61-1.65 (m, 2H, CH2); 1.70-1.74 (m, 2H, CH2); 1.799 (s, 3H, CH3); 1.93-1.98 (m, 2H, CH2); 2.025 (s, 3H, CH3); 2.36-2.39 (m, 1H); 2.66-2.75 (m, 2H, CH2); 3.268 (s, 3H, OCH3); 3.362 (s, 3H, OCH3); 3.42-3.49 (m, 1H); 3.56-3.62 (m, 1H); 3.79-3.95 (m, 2H, CH2); 4.08-4.11 (m, 1H); 4.311 (d, 1H); 4.806 (br, 2H, NH2); 5.190 (s, 1H); 5.857 (t, 1H); 5.904 (d, 1H); 6.583 (t, 1H); 6.955 (d, 1H); 7.276 (s, 1H); 9.167 (br, 1H, NH).


MS(FAB):m/z=631 (M+1).


Example 20
Preparation of 2′S-17-tetrahydrofurfurylamino-17-demethoxy geldanamycin (THFM(S)-GM)

THFM(S)-GM can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is (S)-tetrahydrofurfurylamine.


The retention time of THFM(S)-GM differs minutely from THFM(R)-GM in the HPLC grams, the 1H-NMR spectra of both compounds are essentially same.



1H-NMR (400 M, CDCl3) δ(ppm): 0.94-1.00 (m, 6H, 2CH3); 1.25 (s, 2H, CH2); 1.30-1.32 (m, 1H); 1.61-1.64 (m, 2H, CH2); 1.73-1.75 (m, 2H, CH2); 1.80 (s, 3H, CH3); 1.93-2.00 (m, 2H, CH2); 2.03 (s, 3H, CH3); 2.31-2.37 (m, 1H); 2.67-2.75 (m, 2H, CH2); 3.27 (s, 3H, OCH3); 3.36 (s, 3H, OCH3); 3.43-3.49 (m, 1H); 3.58-3.62 (m, 1H); 3.79-3.96 (m, 2H, CH2); 4.08-4.11 (m, 1H); 4.31 (d, 1H); 4.81 (br, 2H, NH2); 5.19 (s, 1H); 5.86 (t, 1H); 5.91 (d, 1H); 6.55-6.60 (m, 1H); 6.95 (d, 1H); 7.28 (s, 1H); 9.14 (br, 1H, NH).


MS (FAB):m/z=631 (M+1).


Example 21
Preparation of 17-tetrahydrofurfurylamino-17-demethoxy geldanamycin (THFM-GM)

THFM-GM can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is tetrahydrofurfurylamine.



1H-NMR (400 M, CDCl3) δ(ppm): 0.90-1.01 (m, 6H, C10—CH3, C14—CH3); 1.25 (s, 2H, C13—H2); 1.4-1.5 (m, 1H, C14—H); 1.61-1.65 (m, 2H, THMF-CH2—CH2—CH2—); 1.70-1.74 (m, 2H, C15—H2); 1.79 (s, 3H, C8—CH3); 1.93-1.98 (m, 2H, THMF-CH2—CH2—CH—); 2.02 (s, 3H, C2—CH3); 2.36-2.39 (m, 1H, C10—H); 2.66-2.75 (m, 2H, C17—NH—CH2—); 3.26 (s, 3H, C12—OCH3); 3.36 (s, 3H, C6—OCH3); 3.42-3.49 (m, 1H, C12—H); 3.56-3.62 (m, 1H, C11—H); 3.79-3.95 (m, 2H, THMF-CH2—CH—O); 4.08-4.11 (m, 1H, C17—NH—CH2—CH—); 4.31 (d, J=10 Hz, 1H, C6—H);


4.80 (br, OH, NH); 5.19 (s, 1H, C7—H); 5.85 (t, J=11.2 Hz, 1H, C5—H); 5.90 (d, J=10 Hz, 1H, C9—H); 6.58 (t, J=11.4 Hz, 1H, C4—H); 6.95 (d, J=11.6 Hz, 1H, C3—H); 7.27 (s, 1H, C19—H); 9.16 (s, 1H, CH). MS(FAB):m/z=654 (M+Na).


Example 22
Preparation of 17,19-di-(R)-tetrahydrofurfuryl amino-17-demethoxy geldanamycin(THFM-II)

THFM-II can be obtained according to the procedure similar to that used in Example 1 when the side chain reactant is (R)-tetrahydrofurfurylamine. In this case the amount of the side chain compound fed is increased five fold and the reaction time elongated to 10 h.



1H-NMR (400 M, CD3COD) δ(ppm): 0.73 (d, 3H, J=6.4 Hz, CH3); 1.02 (d, 3H, J=6.8 Hz, CH3); 1.46-1.65 (m, 2H, CH2); 1.60 (s, 3H, CH3); 1.81-2.04 (m, 5H, CH, 2CH2); 1.91 (s, 3H, CH3); 2.28-2.46 (m, 2H, CH2); 2.56-2.66 (m, 2H, CH2); 3.08-3.17 (m, 1H, CH); 3.23 (s, 3H, OCH3); 3.29 (s, 3H, OCH3); 3.44-3.88 (m, 11H, 3OCH, 2OCH2, 2NCH2); 4.00-4.09 (m, 2H, CH2); 4.34-4.38 (dd, 1H, J1=10 Hz, J2=7.0 Hz, OCH); 4.88 (d, 1H, J=4.8 Hz, OCH); 5.27 (s, 1H, OCH); 5.29 (d, 1H, J=10 Hz, ═CH); 5.49 (t, 1H, J=10 Hz, ═CH); 6.57 (t, 1H, J=12 Hz, ═CH); 7.27 (d, 1H, J=12 Hz, ═CH).


MS(+Q1):m/z=753 (M++Na), 731 (M++1).


Example 23
Preparation of 17,19-di-(S)-tetrahydrofurfuryl amino-17-demethoxy geldanamycin (THFM+2)

The product THFM+2 can be synthesized according to the procedure similar to that used in Example 1 when the side chain reactant is (S)-tetrahydrofurfurylamine. In this case the amount of the side chain compound fed is increased five fold and the reaction time elongated to 10 h.



1H-NMR (400 M, CD3COD) δ(ppm): 0.73 (d, 3H, J=6.4 Hz, CH3); 0.92 (d, 3H, CH3); 1.45-1.59 (m, 2H, CH2); 1.60 (s, 3H, CH3); 1.83-2.02 (m, 5H, CH, 2CH2); 1.90 (s, 3H, CH3); 2.29-2.46 (m, 2H, CH2); 2.56-2.65 (m, 2H, CH2); 3.07-3.12 (m, 1H, CH); 3.24 (s, 3H, OCH3); 3.29 (s, 3H, OCH3); 3.47-3.85 (m, 11H, 3OCH, 2OCH2, 2NCH2); 4.00-4.08 (m, 2H, CH2); 4.34-4.38 (dd, 1H, J1=10 Hz, J2=7.0 Hz, OCH); 4.88 (d, 1H, J=4.8 Hz, OCH); 5.26 (s, 1H, OCH); 5.29 (d, 1H, J=10 Hz, ═CH); 5.47 (t, 1H, J=10 Hz, ═CH); 6.58 (t, 1H, J=12 Hz, ═CH); 7.24 (d, 1H, J=12 Hz, ═CH).


MS(+Q1):m/z=753 (M+Na), 731 (M+1).


Example 24
Test Procedure for Herpes Simplex Virus Activity (VR733 Strain)

0.1 ml 0.25% trypsin solution and 5 ml 0.02% EDTA solution are added into a culture flask confluent with VERO cells. The culture is digested 20-25 min at 37° C. and the digestion liquid is discarded. Then the cells are dispersed with adding culture medium and passage at a ratio of 1:3. The cells reach confluence after 3 days of culture. The culture is prepared into a concentration of 200,000-300,000 cells/mL and is inoculated into 96 well culture plate in 0.1 ml each well. The cells are cultured at 37° C. under 5% CO2 condition for 24 h. Tests are carried out when the cells grow into a mono layer.


Cell culture with a concentration of 200,000-300,000 VERO cells/mL is inoculated into 96 well culture plate in 0.1 ml each well. The cells are cultured at 37° C. and under 5% CO2 condition for 24 h, then the culture medium is discarded. Appropriate amount of HSV-1 is added into the culture plate and the virus is allowed to absorb for 1 h, then the virus liquid is discarded. The reagents to be tested (i.e target compounds of this invention) are added into the culture plate, wherein a series of concentrations of the reagent to be tested is added into culture plate in 2 wells per one concentration. The cells are cultured at 37° C. in 5% CO2 and the pathological changes of the cells are observed after culturing for 48 h. It is calculated that the median effective concentration of the test reagent to inhibit ½ virus according to the following equation:







IC
50

=

Anti






log


(

A
+



50
-
A


B
-
A


×
C


)









A
=

log


(


pathological





changes

<

50

%





concentration





of





the





reagent


)








B
=

log


(


pathological





changes

>

50

%





concentration





of





the





reagent


)








C
=

log


(

dilution





factor

)






The calculated IC50 values according to the test results are shown in Table 1.


Example 26
Test Procedure for Anti-HBV Activity

Using cell culture method, the preparation of the cells to be tested (100,000 cell's/mL) is inoculated into cell culture plate in 100 μl each well and the cells are cultured 24 h at 37° C. in 5% CO2. Tests are carried out when the cells grow into a monolayer. The target compounds as well as the controls are prepared into a series of solutions of appropriate concentrations using the culture medium and are added into 96 well culture plate respectively in 4 wells per one concentration. Then the reagent solution in each well is changed into the fresh reagent solution with the same concentration every 4 days. A cell control without reagent treatment is simultaneously is set up. The observation index is based upon the pathological changes of the cells by observing the degrees of the pathological changes of the cells under microscope every 8 days. The test procedure for testing the inhibition of HBV activity of the drug is as follows: the tested cells at a concentration of 100,000/mL are inoculated into 96 well culture plate, in 100 μl each well and are cultured at 37° C. in 5% CO2 for 24 h, then the reagent solutions are added into the well. Cell control without drug treatment is simultaneously is set up. The reagent solution or control medium in each well is changed into the fresh reagent solution or fresh medium respectively every 4 days. After cytolysis of the cells, HBV DNA is extracted from the cell lysis solution according to the molecular cloning technical procedure. The spots of different samples are hybridized and the A values of different hybridized spots are measured using autoradiograghic technique. The HBV DNA contents in the cell control as well as in the drug treated samples are calculated using the regression equations obtained from the standard curves to obtain half effective concentration values, the results are shown in Table 1.


Example 27
Test Procedure of Anti HIV-1 Activity

8 reagent solutions of different diluted concentrations and positive control solutions are added into cell cultures in 96 well plate respectively. The sample of each diluted solutions is made duplicately and a control cell sample is also is set up. 100 μl of cell sample at a concentration of 2×105cells/ml is inoculated into the wells containing reagent in the plate. The cells samples are cultured in a saturated humidity culture chamber (at a 5% CO2 atmosphere) at 37° C. The pathological changes of cells are observed daily. The contents of HIV-1 P24 antigen in the cell cultures are measured at 4 days after addition of the reagents according to the procedure provided by the HIV-1 P24 antigen test kit, the half effective concentrations (IC50) of the reagents are calculated, the results are shown in Table 1.

Claims
  • 1. A series of geldanamycin derivatives whose structure is shown in Formula (I):
  • 2. A method for preparing the geldanamycin derivatives defined in claim 1, wherein the amine containing R1 substituent is allowed to react with geldanamycin in a haloalkane, alcoholic or polar aprotic solvent and under alkaline condition to obtain 17-mono-substituted compound (Formula I, wherein X—R2 is H); then the resulting 17-mono-substituted compound is allowed to react with R2XH under similar conditions to obtain 17,19-disubstituted compounds (Formula I, both R1 and X—R2 are not H).
  • 3. The method of claim 2, wherein said solvent is selected from a group consisting of N,N-dimethylformamide, dimethylsulfoxide, ethyl acetate, acetonitrile and acetone.
  • 4. The method of claim 2, wherein the alkaline condition is realized by using triethylamine, pyridine, N,N-dimethylpridine, potassium carbonate, sodium carbonate or calcium hydroxide.
  • 5. A method for preparing the geldanamycin derivatives defined in claim 1, wherein, when R1 is a substituent containing a structure of 3,4-di-hydroxyl-methylated caffeic acid, the method is as follows, caffeic acid is firstly reacted with methylating reagent under alkaline condition to obtain 3,4-di-hydroxyl-methylated caffeic acid, which reacts subsequently with acyl chlorinating reagent to obtain the corresponding acyl chloride, which further reacts with mono N-tert-butoxycarbonylethyldiamine to obtain (2-tert-butoxycarbonylamino)ethyl-3,4-di-hydroxyl-methylated caffeoylmide, after removal of tert-butyl protecting group to obtain (2-amino)ethyl-3,4-di-hydroxyl-methylated caffeoylamide, which further reacts with geldanamycin according to the method of claim 2 to obtain geldanamycin derivative containing di-hydroxyl-methylated caffeoylamido structure linked to the 17-site.
  • 6. The method of claim 5, wherein the methylating reagent is selected from a group consisting of dimethyl sulfate, methyl methanesulfonate, methyl iodide and dimethyl carbonate.
  • 7. A method for preparing the geldanamycin derivatives defined in claim 1, wherein, when R1 is a substituent containing a structure of cytidine, the method is as follows, cytidine reacts with 2,2-dimethoxylpropane under acidic condition to obtain 2′,3′-isopropylidene cytidine, which condensates with γ-tert-Butoxycarbonylamino butyric acid under the effect of dehydrating reagent DCC or TBU to obtain esterification product of said acid with 2′,3′-isopropylidene cytidine, from which removes the BOC protective group by alcoholysis under acidic catalysis to obtain cytidine γ-aminobutyrate hydrochloride, which reacts with geldanamycin according to the method of claim 2 to obtain geldanamycin derivative containing cytidine structure linked to the 17-site.
  • 8. A method for preparing the geldanamycin derivatives defined in claim 1, wherein, when R1 is a substituent containing a structure of niacinamide structure, the method is as follows, nicotinic acid reacts with acyl chlorinating reagent dichlorosulfoxide to obtain nicotinoyl chloride, which reacts with 2-(N-tert-butyloxycarbonyl)ethanediamine to obtain 2-(tert-butoxycarbonylamino) ethyl niacinamide, from which the BOC protective group is removed by alcoholysis under acidic catalysis to obtain (2-amino)ethyl nicotinoylamide, which reacts finally with geldanamycin according to the method of claim 2 to obtain geldanamycin derivative containing nicotinoylamide structure linked to the 17-site.
  • 9. A method for preparing the geldanamycin derivatives defined in claim 1, wherein, when R1 is a substituent containing a phosphonate group, the method is as follows, p-tolyl sulfonyloxoalkyl phosphonate diethyl ester reacts with phthalimide potassium salt in a polar aprotic solvent to produce N-alkylphosphonate diethyl ester-phthalimide, which reacts with hydrazine hydrate to produce aminoalkyl phosphonate diethyl ester, which reacts with geldanamycin according to the method of claim 2 to obtain geldanamycin derivative containing a phosphonate group linked to the 17-site.
  • 10. The pharmaceutical compositions of the compounds shown in Formula (I) of claim 1, wherein said compositions consists of said compounds with therapeutically effective amount as the active components and one or more pharmacologically acceptable carriers.
  • 11. The use of the compounds defined in claim 1 for preparing anti-virus and anti-tumor medicines.
  • 12. The use of the compositions defined in claim 10 for preparing anti-virus and anti-tumor medicines.
Priority Claims (1)
Number Date Country Kind
200810001170.6 Jan 2008 CN national
PCT Information
Filing Document Filing Date Country Kind 371c Date
PCT/CN09/00074 1/19/2009 WO 00 7/14/2010