Synthesis and evaluation of 5-amino-1-.beta.-D-ribofuranosyl-1,2,4-triazole-3-carboxamidine and certain related nucleosides as inhibitors of purine nucleoside phosphorylase
作者:Yogesh S. Sanghvi、Naeem B. Hanna、Steven B. Larson、James M. Fujitaki、Randall C. Willis、Roberts A. Smith、Roland K. Robins、Ganapathi R. Revankar
DOI:10.1021/jm00397a010
日期:1988.2
The 5-amino and certain related derivatives of the powerful purine nucleoside phosphorylase (PNPase) inhibitor 1-beta-D-ribofuranosyl-1,2,4-triazole-3-carboxamidine (TCNR,3) have been prepared and evaluated for their PNPase activity. Acetylation followed by dehydration of 5-chloro-1-beta-D-ribofuranosyl-1,2,4-triazole-3-carboxamide (4a) gave 5-chloro-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1,2
制备了功能强大的嘌呤核苷磷酸化酶(PNPase)抑制剂1-β-D-呋喃呋喃糖基-1,2,4-三唑-3-羧am胺(TCNR,3)的5-氨基及某些相关衍生物并评估了其PNPase活动。乙酰化,然后将5-氯-1-β-D-呋喃呋喃糖基-1,2,4-三唑-3-羧酰胺(4a)脱水,得到5-氯-1-(2,3,5-三-O-乙酰基-β-D-呋喃核糖基)-1,2,4-三唑-3-腈(5)。氨解5个提供的5-氨基-1-β-D-呋喃呋喃糖基-1,2,4-三唑-3-羧am(5-氨基-TCNR,6),其结构由单晶X射线确定分析。5-氯-1,2,4-三唑-3-羧酸甲酯(7a)与5-脱氧-1,2,3-三-O-乙酰基-D-呋喃呋喃糖(8)的酸催化熔融生成甲基5 -氯-1-(2,3-二-O-乙酰基-5-脱氧-β-D-呋喃呋喃糖基)-1,2,4-三唑-3-羧酸盐(9a)和相应的位置异构体9b。9a中官能团的转化提供了一条通往5'