S-(5'-Deoxy-5'-adenosyl)-1-aminoxy-4-(methylsulfonio)-2-cyclopentene (AdoMao): An Irreversible Inhibitor of S-Adenosylmethionine Decarboxylase with Potent in Vitro Antitrypanosomal Activity
作者:Junqing Guo、Yong Qian Wu、Donna Rattendi、Cyrus J. Bacchi、Patrick M. Woster
DOI:10.1021/jm00010a021
日期:1995.5
The S-adenosylmethionine (AdoMet) analogue S-(5'-deoxy-5'-adenosyl)-1-aminoxy-4-(methylsulfonio)-2-cycl opentene (AdoMao) was synthesized in two of its four possible diastereomeric forms using a facile chemoenzymatic route. The trans-1R,4R- and trans-1S,4S-diastereomers of AdoMao, as well as the corresponding diastereomers of the unmethylated precursor molecule nor-AdoMao, were then evaluated as inhibitors
S-腺苷甲硫氨酸(AdoMet)类似物S-(5'-脱氧-5'-腺苷)-1-氨基xy-4-(甲基磺酰基)-2-环戊烯(AdoMao)使用以下四种可能的非对映异构体形式中的两种合成一种简便的化学酶途径。然后将AdoMao的反式1R,4R-和反式1S,4S非对映异构体以及未甲基化的前体分子nor-AdoMao的相应非对映异构体评估为S-腺苷甲硫氨酸脱羧酶(AdoMet-DC)的抑制剂细菌和人类来源。所有这四个类似物均是来自大肠杆菌的AdoMet-DC的时间依赖性不可逆抑制剂,表现出明显恒定的Ki值,范围在20.6至23.7 microM之间。这些类似物也抑制了人类形式的AdoMet-DC,尽管这种形式的酶能够区分AdoMao(Ki值为21)。反式1R,4R形式为2 microM,反式1S,4S形式为19.6 microM)和AdoMao(反式1R,4R形式的Ki值为95.2 microM,反式1S,4S形式的Ki值为30