Mycobacterium tuberculosis Thymidine Monophosphate Kinase Inhibitors: Biological Evaluation and Conformational Analysis of 2′- and 3′-Modified Thymidine Analogues
作者:Philippe Van Rompaey、Koen Nauwelaerts、Veerle Vanheusden、Jef Rozenski、Hélène Munier-Lehmann、Piet Herdewijn、Serge Van Calenbergh
DOI:10.1002/ejoc.200300177
日期:2003.8
Mycobacterium tuberculosis thymidine monophosphate kinase (TMPKmt) has recently been introduced as a potential target for the structure-based design of anti-tuberculosis drugs. Based on the TMPKmt X-ray structure and previous S.A.R. studies, we synthesised the nucleoside analogues 3a−b, 6a−b, 7a−b, and 8a−b, modified in 2′- and 3′-position of the ribofuranose ring moiety. To our surprise, these analogues
结核分枝杆菌胸苷单磷酸激酶 (TMPKmt) 最近被引入作为抗结核药物基于结构设计的潜在目标。基于 TMPKmt X 射线结构和先前的 SAR 研究,我们合成了核苷类似物 3a-b、6a-b、7a-b 和 8a-b,在呋喃核糖环部分的 2'-和 3'-位置进行了修饰. 令我们惊讶的是,这些类似物仅表现出中等的结合亲和力(即 Ki 介于 118 和 1260 μM 之间)。这促使我们研究这些核苷的构象特征。我们得出结论,该系列的化合物,尤其是 8a-b,强烈偏向于“北方”呋喃糖环构象,而 X 射线晶体学显示 TMPKmt 偏爱相反的“南方”构象异构体。本文涵盖了合成,2'-和3'-修饰的dT类似物的生物学评价和构象特征(即优选的环褶皱)。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)