Water soluble adjuvant and composition containing same
The present invention relates to a compound useful as a vaccine adjuvant for cancer vaccine, a preparation process thereof, a pharmaceutical composition comprising the compound, and use of the compound as a vaccine adjuvant for cancer vaccine.
1. A compound of formula (1):
or a pharmaceutically acceptable salt thereof, wherein
X is methylene, oxygen atom, sulfur atom, SO, SO 2 , or NR 5 , wherein R 5 is hydrogen or C 1-6 alkyl,
R 1 is C 1-6 alkyl which is optionally substituted with 1-5 substituents selected independently from the group consisting of halogen, hydroxy, and C 1-6 alkoxy,
R 2 and R 3 are independently hydrogen or C 1-6 alkyl which is optionally substituted with 1-5 substituents selected independently from the group consisting of halogen, hydroxy, and C 1-6 alkoxy,
R 4 is hydrogen, halogen, hydroxy, C 1-6 alkyl, which is optionally substituted with 1-3 the same or different halogens, C 1-6 alkoxy, which is optionally substituted with 1-3 the same or different halogens, or cyano,
L is a linker, and
Y 1 is —(CH 2 CH 2 O) m —R 6 , wherein R 6 is hydrogen or C 1-6 alkyl, and m is an integer from 3-100.
2. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein X is methylene.
3. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein R 1 is C 1-3 alkyl which is optionally substituted with 1-3 independently selected halogens.
4. The compound of claim 3 or a pharmaceutically acceptable salt thereof, wherein R 1 is methyl.
5. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein R 4 is hydrogen, hydroxy, C 1-3 alkyl, or C 1-3 alkoxy.
6. The compound of claim 5 or a pharmaceutically acceptable salt thereof, wherein R 4 is hydrogen, hydroxy, or methoxy.
7. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein R 2 is C 1-6 alkyl.
8. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein R 3 is hydrogen, or C 1-3 alkyl which is optionally substituted with 1-3 hydroxy.
9. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein
L is a linker selected from —O—, —NR Y —, —C(O)—, —C(O)O—, —OC(O)—, —C(O) NR Y —,—NR Y C(O)—, —CH 2 NR Y —, —CH 2 O—, —OC(O)O—, —NR 7 C(O)O—, —OC(O)NR Y —, —NR 7 C(O)NR Y —, —OC(S)NR Y —, and —NR 7 C(S)NR Y —; wherein R 7 is hydrogen or C 1-6 alkyl; and R Y is hydrogen, C 1-6 alkyl, or Y 2 ; wherein Y 2 is —(CH 2 CH 2 O) n —R 8 ; and wherein R 8 is hydrogen atom or C 1-6 alkyl, and n is an integer from 3-100.
10. The compound of claim 9 or a pharmaceutically acceptable salt thereof, wherein L is —C(O)NR Y —, —CH 2 NR Y —, —C(O)O—, or —CH 2 O—.
11. The compound of claim 9 or a pharmaceutically acceptable salt thereof, wherein
L is —CH 2 NR Y —, and
R Y is hydrogen, C 1-6 alkyl, or Y 2 .
12. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein
Y 1 is —(CH 2 CH 2 O) m —R 6 ,
R 6 is hydrogen or C 1-6 alkyl, and
m is an integer from 3-40.
13. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein the compound is a compound of formula (2):
or formula (3):
wherein
R 2 is C 1-6 alkyl,
R 3 is hydrogen or C 1-3 alkyl, which is optionally substituted with 1-3 hydroxy,
R 4 is hydrogen, hydroxy, or methoxy,
L is —CH 2 NR Y —,
R Y is hydrogen or C 1-6 alkyl,
Y 1 is —(CH 2 CH 2 O) m —R 6 ,
R 6 is hydrogen or C 1-6 alkyl, and
m is an integer from 3-20.
14. The compound of claim 1 or a pharmaceutically acceptable salt thereof, wherein the compound is a compound of formula (2):
wherein
R 2 is C 1-6 alkyl,
R 3 is hydrogen or C 1-3 alkyl, which is optionally substituted with one hydroxy,
R 4 is hydrogen or methoxy,
L is —CH 2 NR Y —,
R Y is hydrogen or C 1-6 alkyl,
Y 1 is —(CH 2 CH 2 O) m —R 6 ,
R 6 is hydrogen or C 1-6 alkyl, and
m is selected from 3-40.
15. The compound of claim 1 or a pharmaceutically acceptable salt thereof, which is selected from:
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8, 11, 14-tetraoxa-2-azahexadecan-16-ol;
1-{4-[(2-amino-4- {[(3S)-1-hydroxyhexan-3-yl]amino}-6-methylpyrimidin-5-yl)methyl]-3-methoxyphenyl}-2-methyl-5,8,11,14-tetraoxa-2-azahexadecan-16-ol;
1-(3- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-4-methoxyphenyl)-2-methyl-5,8, 11, 14-tetraoxa-2-azahexadecan-16-ol;
1-(3- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-4-hydroxyphenyl)-2-methyl-5,8, 11, 14-tetraoxa-2-azahexadecan-16-ol;
4-[(2-amino-4- {[(2S)-1-hydroxypentan-2-yl]amino}-6-methylpyrimidin-5-yl)methyl]-N-(20-hydroxy-3,6,9,12,15, 18-hexaoxaicosan-1-yl)-3-methoxybenzamide;
2,5,8, 11-tetraoxatridecan-13-yl 4-[(2-amino-4- {[(2S)-1-hydroxypentan-2-yl]amino}-6-methylpyrimidin-5-yl)methyl]-3-methoxybenzoate;
5- {[2-methoxy-4-(2,5,8,11,14-pentaoxapentadecan-1-yl)phenyl]methyl}-6-methyl-N4-pentylpyrimidine-2,4-diamine;
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8, 11, 14, 17,20,23,26,29-nonaoxa-2-azahentriacontan-31-ol;
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68,71-tricosaoxa-2-azatriheptacontan-73-ol;
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-
5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68,71,74,77,80,83,86,89,92,95,98, 101,104, 107-pentatriacontaoxa-2-azanonahectan-109-ol; and
12-[(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)methyl]-3,6,9,15,18,21-hexaoxa-12-azatricosan-1,23-diol.
16. The compound of claim 1 or a pharmaceutically acceptable salt thereof, which is selected from:
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8, 11, 14-tetraoxa-2-azahexadecan-16-ol;
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8,11, 14,17,20,23,26,29-nonaoxa-2-azahentriacontan-31-ol;
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68,71-tricosaoxa-2-azatriheptacontan-73-ol;
1-(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)-2-methyl-5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68,71,74,77,80,83,86,89,92,95,98, 101,104, 107-pentatriacontaoxa-2-azanonahectan-109-ol; and
12-[(4- {[2-amino-4-methyl-6-(pentylamino)pyrimidin-5-yl]methyl}-3-methoxyphenyl)methyl]-3,6,9,15,18,21-hexaoxa-12-azatricosan-1,23-diol.
17. A pharmaceutical composition comprising the compound of claim 1 , or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable diluent or carrier.
18. The pharmaceutical composition of claim 17 , which is an emulsion formulation, an oil-based suspension, a hydrogel formulation, or a lipid formulation.
19. The pharmaceutical composition of claim 18 , which is an emulsion formulation.
20. The pharmaceutical composition of claim 19 , wherein the emulsion formulation is a water-in-oil emulsion.
21. The pharmaceutical composition of claim 20 , wherein the emulsion formulation comprises (1) ethyl oleate, octyldodecyl myristate, sorbitan monooleate, glyceryl monooleate, polyoxyethylene hydrogenated castor oil 20, glycerin, and sodium dihydrogen phosphate; or (2) Montanide ISA 51VG.
22. The pharmaceutical composition of claim 18 , which is a lipid formulation.
23. The pharmaceutical composition of claim 22 , wherein the lipid formulation is a liposome formulation comprising phospholipid.
24. The pharmaceutical composition of claim 23 , wherein the liposome formulation comprises at least one additive selected from the group consisting of inorganic acid, inorganic acid salt, organic acid, organic acid salt, sugars, buffering agent, antioxidant, and polymers.
25. The pharmaceutical composition of claim 22 , wherein the lipid formulation is a liposome formulation comprising sterols.
26. The pharmaceutical composition of claim 25 , wherein the sterols are cholesterol.
27. The pharmaceutical composition of claim 17 , further comprising a tumor antigen.
28. The pharmaceutical composition of claim 27 , wherein the tumor antigen is a tumor antigen peptide.
29. The pharmaceutical composition of claim 28 , wherein the tumor antigen peptide is a combination of a peptide represented by the amino acid sequence of formula (4):
wherein the bond between C—C is a disulfide bond, or a pharmaceutically acceptable salt thereof, and
a peptide represented by the amino acid sequence of SEQ ID NO 3: WAPVLDFAPPGASAYGSL, or a pharmaceutically acceptable salt thereof.
30. A kit comprising
a) the pharmaceutical composition of claim 17 ; and
b) a tumor antigen or a pharmaceutical composition comprising a tumor antigen.
31. A kit comprising:
a) the pharmaceutical composition of claim 17 ; and
b) an antigen or a pharmaceutical composition comprising an antigen.
32. A kit comprising
a) the pharmaceutical composition of claim 17 ; and
b) a pathogen-derived antigen or a pharmaceutical composition comprising a pathogen-derived antigen.
33. A kit comprising
a) the compound of claim 1 or a pharmaceutically acceptable salt thereof; and
b) a tumor antigen or a pharmaceutical composition comprising a tumor antigen.
34. A method of treating cancer comprising administering to a subject therapeutically effective amount of the compound of claim 1 , or a pharmaceutically acceptable salt thereof.
35. A kit comprising
a) the compound of claim 1 or a pharmaceutically acceptable salt thereof, and
b) an antigen or a pharmaceutical composition comprising an antigen.
36. A kit comprising
a) the compound of claim 1 or a pharmaceutically acceptable salt thereof; and
b) a pathogen-derived antigen or a pharmaceutical composition comprising a pathogen-derived antigen.
37. A method for inducing cytotoxic T-lymphocyte in a mammal, comprising administering the compound of claim 1 , or a pharmaceutically acceptable salt thereof, to the mammal.
38. A method for enhancing the cytotoxic T-lymphocyte induction in a mammal, comprising administering the compound of claim 1 , or a pharmaceutically acceptable salt thereof, to the mammal.
39. A method for enhancing specific immune response in a mammal to an antigen, comprising administering the compound of claim 1 , or a pharmaceutically acceptable salt thereof, to the mammal.