Potential inhibitors of S-adenosylmethionine-dependent methyltransferases. 9. 2',3'-Dialdehyde derivatives of carbocyclic purine nucleosides as inhibitors of S-adenosylhomocysteine hydrolase
作者:D. Michael Houston、E. K. Dolence、Bradley T. Keller、Usha Patel-Thombre、Ronald T. Borchardt
DOI:10.1021/jm00382a015
日期:1985.4
3-deazaadenine) carbocyclic nucleosides, nucleoside 2',3'-dialdehydes, and nucleoside 2',3'-diols were synthesized as potential inhibitors of bovine liver S-adenosyl-L-homocysteine (AdoHcy) hydrolase (EC 3.3.1.1) and as potential inhibitors of vaccinia virus replication. The 2',3'-dialdehydes were prepared by periodate oxidation of the corresponding carbocyclic nucleosides. Reduction of the intermediate
合成了一系列嘌呤(例如腺嘌呤,N6-甲基腺嘌呤,8-氮杂腺嘌呤,3-脱氮杂腺嘌呤)碳环核苷,核苷2',3'-二醛和核苷2',3'-二醇作为牛肝的潜在抑制剂S-腺苷-L-高半胱氨酸(AdoHcy)水解酶(EC 3.3.1.1),是牛痘病毒复制的潜在抑制剂。2',3'-二醛是通过相应碳环核苷的高碘酸氧化制备的。用硼氢化钠还原中间体二醛得到相应的2',3'-二醇。在所测试的核苷中,最有效的AdoHcy水解酶抑制剂为腺嘌呤类似物(Ki = 110 +/- 38 nM)和3-deazaadenine类似物(Ki = 4 +/- 0.9 nM),它们是可逆的竞争性抑制剂。相反,2',3' -二醛产生不可逆的AdoHcy水解酶抑制作用,导致每分子该酶(四聚体)引入二至四分子二醛。根据Ackermann-Potter分析,对于2',3'-二醛,确定以下“表观” Ki值:腺嘌呤类似物,61 nM;8-氮杂腺嘌呤类似物,57