申请人:Bristol-Myers Squibb Company
公开号:EP0391411A2
公开(公告)日:1990-10-10
Certain 3′-substituted methyl nucleosides are disclosed which are useful in the treatment of viral infections, e.g., infections caused by herpes simplex virus types 1 and 2, and/or are useful as intermediates in the preparation of 3′-substituted methyl nucleosides having antiviral activity. In accordance with one aspect of the invention, there are provided novel 3′-substituted methyl nucleosides represented by Formulas I and II
wherein:
B indicates that B can be either alpha or beta;
B is a member selected from the group consisting of the pyrimidine and purine nucleoside bases connected to the tetrahydrofuran ring through the N¹ heterocyclic nitrogen atom of the pyrimidines and the N⁹ or N⁷ heterocyclic nitrogen atom of the purines including the naturally occurring nucleoside bases and 5-fluoro, 5-bromo, 5-iodo, 5-chloro, 5-trifluoromethyl, 5-ethyl, 5-(2-bromovinyl)uracil; triazolecarboxamide; 2-aminopurine;
2,6-diaminopurine; 4-chloropyrimidine; pyrimidine; azapyrimidine; purine; 2,6-dichloropurine; 2-amino-6-chloropurine; and deazapurine;
R and Q are either both hydrogen or halogen, especially fluorine, or one is hydrogen and the other one is hydroxy or halogen, especially fluorine; in Formula I at least one of R and Q is halogen; and
X and Y can be the same or different and are selected from the group consisting of O-alkyl, O-aryl, O-acyl-, halogen, especially fluorine, azido, amino, acylamido, -SH, S-alkyl and S-aryl, or one of X or Y can be hydroxy, or X may be the group R¹O and Y may be the group R²O wherein R¹ and R² are hydrogen or hydroxy-protecting groups.
Preferred O-alkyl and S-alkyl groups contain from one to four carbon atoms; preferred O-aryl and S-aryl groups contain from 6 to 10 carbon atoms; and preferred O-acyl groups contain from one to four carbon atoms.
本发明公开了某些3′-取代的甲基核苷,它们可用于治疗病毒感染,例如由单纯疱疹病毒1型和2型引起的感染,和/或可用作制备具有抗病毒活性的3′-取代的甲基核苷的中间体。根据本发明的一个方面,提供了由式 I 和 II 表示的新型 3′-取代的甲基核苷
其中
B表示B可以是α或β;
B 是选自以下组成的组的成员:通过嘧啶的 N¹ 杂环氮原子和嘌呤的 N⁹ 或 N⁷ 杂环氮原子与四氢呋喃环连接的嘧啶和嘌呤核苷碱基,包括天然存在的核苷碱基和 5-氟、5-溴、5-碘、5-氯、5-三氟甲基、5-乙基、5-(2-溴乙烯基)尿嘧啶;三唑甲酰胺; 2-氨基嘌呤;
2,6-二氨基嘌呤;4-氯嘧啶;嘧啶;氮杂嘧啶;嘌呤;2,6-二氯嘌呤;2-氨基-6-氯嘌呤;以及去氮嘌呤;
R 和 Q 要么都是氢或卤素,特别是氟,要么一个是氢,另一个是羟基或卤素,特别是氟;在式 I 中,R 和 Q 中至少有一个是卤素;以及
X 和 Y 可以相同或不同,选自由 O-烷基、O-芳基、O-酰基、卤素(尤其是氟)、叠氮、氨基、酰氨基、-SH、S-烷基和 S-芳基组成的组,或者 X 或 Y 中的一个可以是羟基,或者 X 可以是基团 R¹O,Y 可以是基团 R²O,其中 R¹ 和 R² 是氢或羟基保护基团。
优选的 O-烷基和 S-烷基含有 1 至 4 个碳原子;优选的 O-芳基和 S-芳基含有 6 至 10 个碳原子;优选的 O-酰基含有 1 至 4 个碳原子。