Novel UDP-Glycal Derivatives as Transition State Analogue Inhibitors of UDP-GlcNAc 2-Epimerase
作者:Florian Stolz、Martin Reiner、Astrid Blume、Werner Reutter、Richard R. Schmidt
DOI:10.1021/jo0353029
日期:2004.2.1
the first step in the biosynthesis of sialic acids, is catalyzed by UDP-GlcNAc 2-epimerase. In this paper we report the synthesis of transition state based inhibitors of this enzyme. To mimic the assumed first transition state of this reaction (TS 1), we designed and synthesized the novel UDP-exo-glycal derivatives 1−4. We also report herein the synthesis of 5 and 6, the first C-glycosidic derivatives
UDP-GlcNAc 2-epimerase催化将唾液酸生物合成过程中的第一步从UDP-GlcNAc到ManNAc的“表位化”。在本文中,我们报告了该酶基于过渡态抑制剂的合成。为了模拟该反应的假定的第一过渡态(TS 1),我们设计并合成了新型UDP-外糖基衍生物1-4。我们在此还报告了5和6的合成,2-乙酰氨基葡糖的第一个C-糖苷衍生物以及酮苷7和8的合成,它们分别被设计为双底物类似物和双产物类似物,以模拟通过假定的第二过渡态TS 2进行反应的第二步。