申请人:Southern Research Institute
公开号:US05478928A1
公开(公告)日:1995-12-26
2',3'-dideoxy-4'-thioribonucleosides useful as antiviral agents in the treatment and prevention of AIDS are disclosed. In accordance with one aspect of the invention there are provided compounds of the formula ##STR1## where X.dbd.H, N.sub.3 or F, and B is a member selected from the group consisting of pyrimidine, 5-azapyrimidine, 6-azapyrimidine, 3-deazapyrimidine, purine, 3-deazapurine, 7-deazapurine, 8-azapurine, and 2-azapurine bases. The intermediate 1-O-acetyl-5-O-t-butyldiphenylsilyl-4-thio-2,3-dideoxyribofuranose is useful in the production of certain of the 2',3'-dideoxy-4'-thioribonucleosides. Other intermediates include the 4-thio-2,3-dideoxyribofuranose having different hydroxyl protecting groups and leaving groups.
本发明揭示了作为抗病毒剂在艾滋病的治疗和预防中有用的2',3'-二脱氧-4'-硫代核苷。根据本发明的一个方面,提供了以下式子的化合物##STR1##
其中X.dbd.H,N.sub.3或F,B是从嘧啶,5-氮杂嘧啶,6-氮杂嘧啶,3-脱氮嘧啶,嘌呤,3-脱氮嘌呤,7-脱氮嘌呤,8-氮杂嘌呤和2-氮杂嘌呤碱基组成的群体中选择的成员。1-O-乙酰基-5-O-t-丁基二苯基硅基-4-硫-2,3-二脱氧核糖呋喃糖是制备某些2',3'-二脱氧-4'-硫代核苷的有用中间体。其他中间体包括具有不同羟基保护基和离去基的4-硫-2,3-二脱氧核糖呋喃糖。