申请人:MediChem Research, Inc.
公开号:US05874577A1
公开(公告)日:1999-02-23
Unprotected adenine, 6-chloropurine, 2,6-diaminopurine, and 2-amino-6-chloropurine have been directly coupled with 2-(diethoxyphosphonomethoxy)ethanol under a disclosed method to provide acyclic phosphonate nucleotide analogues which are intermediates for antiviral agents such as 9-\x9b2-(phosphonomethoxy)ethyl!adenine (PMEA) and its analogues having a structure of formula I: ##STR1## wherein Z represents N or CH; R.sub.1 represents hydrogen, alkyl, aryl, or arylalkyl; R.sub.2 and R.sub.3 are independently selected from H, OH, halo, NH.sub.2, C.sub.6 H.sub.5 CH.sub.2 O, or R.sub.4 R.sub.5 N wherein R.sub.4 and R.sub.5 are independently selected from alkyl, aryl, or arylalkyl.
未受保护的腺嘌呤、6-氯嘌呤、2,6-二氨基嘌呤和2-氨基-6-氯嘌呤已经在一种公开的方法下直接与2-(二乙氧膦酸甲氧基)乙醇偶联,提供了无环膦酸核苷类似物,这些类似物是抗病毒剂如9-\x9b2-(膦酸甲氧基)乙基!腺嘌呤(PMEA)及其结构为公式I的类似物的中间体:##STR1## 其中Z代表N或CH;R.sub.1代表氢、烷基、芳基或芳基烷基;R.sub.2和R.sub.3独立选择自H、OH、卤素、NH.sub.2、C.sub.6 H.sub.5 CH.sub.2 O或R.sub.4 R.sub.5 N,其中R.sub.4和R.sub.5独立选择自烷基、芳基或芳基烷基。