2-(Alkylthio)-1,2,4-triazolo[1,5-a]pyrimidines as adenosine 3',5'-monophosphate phosphodiesterase inhibitors with potential as new cardiovascular agents
作者:Thomas Novinson、Robert Springer、D. E. O'Brien、Mieka B. Scholten、Jon P. Miller、Roland K. Robins
DOI:10.1021/jm00346a017
日期:1982.4
A series of new 2-(alkylthio)-5,7-disubstituted-1,2,4-triazolo[1,5-a]pyrimidines have been prepared as inhibitors of cAMP phosphodiesterase from various tissues. These derivatives were prepared via ring closure of various requisite 3-amino-1,2,4-triazole intermediates. 2-(Benzylthio)-5-methyl-7-(dimethylamino)-1,2,4-triazolo[1,5-a]pyrimidine (15a) is 6.3 times as potent as theophylline in inhibiting
一系列新的2-(烷硫基)-5,7-二取代-1,2,4-三唑并[1,5-a]嘧啶已被制备作为来自各种组织的cAMP磷酸二酯酶的抑制剂。这些衍生物是通过各种必需的3-氨基-1,2,4-三唑中间体的闭环制备的。2-(苄硫基)-5-甲基-7-(二甲氨基)-1,2,4-三唑并[1,5-a]嘧啶(15a)在抑制从兔心脏中分离的cAMP PDE方面的功效是茶碱的6.3倍。以5(mg / kg)/ h的15a剂量静脉内处理狗,其心输出量增加69%,在停止给药后的2小时内,这种增加在很大程度上得以维持。服用15a后,心率无明显增加。与5,7-二-正丙基-2-(苄硫基)-1,2,4-三唑并[1,5-a]嘧啶(22a)的相关研究显示有5只狗为31。心输出量增加5%,中风量增加34.4%,而心率未增加。这些PDE抑制剂的作用特异性可能是由于在心血管系统中某个cAMP PDE位点的选择性结合所致。这些化合物中的几种是候选药物,可用于临床评估。