大号-Heptoses(大号-甘油基- d -甘露-heptopyranoses)的脂多糖(LPS)的内芯的成分,在许多传染性疾病,以及在许多人类病原体毒力的死亡率分子发挥关键作用。迄今为止,抑制细菌庚糖生物合成途径的第一种酶的方法几乎是一个尚未开发的领域,尽管它似乎是开发抗毒药物的一种非常新颖的方法。我们报告了一系列的合成d -甘油- d -甘露七磷酸吡喃葡萄糖(H7P)类似物及其对异构酶GmhA和激酶HldE的抑制特性,所述细菌是细菌庚糖生物合成途径的两个首个酶。庚糖的结构已在1、2、6和7位进行了修饰,以探究H7P关键结构特征的重要性,这些特征允许与目标酶紧密结合。H7P是GmhA和HldE底物的产物,第二个目标是寻找可以同时抑制两种酶的结构。我们发现GmhA和HldE对庚糖支架6位和7位的结构修饰极为敏感。令我们惊讶的是,H7P的差向异构体显示D-glucopyranose配置被认
Stereoselective Glycal Fluorophosphorylation: Synthesis of ADP-2-fluoroheptose, an Inhibitor of the LPS Biosynthesis
作者:Hirofumi Dohi、Régis Périon、Maxime Durka、Michael Bosco、Yvain Roué、François Moreau、Sylvestre Grizot、Arnaud Ducruix、Sonia Escaich、Stéphane P. Vincent
DOI:10.1002/chem.200801279
日期:2008.10.29
describes the synthesis of a fluorinated analogue of ADP-L-glycero-beta-D-manno-heptopyranose, the donor substrate of the heptosyl transferase WaaC, which catalyzes the incorporation of this carbohydrate into LPS. Synthetically, the key step for the preparation of ADP-2F-heptose is the simultaneous and stereoselective installation of both the fluorine atom at C-2 and the phosphoryl group at C-1 through a
β-Selective One-Pot Fluorophosphorylation of<scp>d,d</scp>-Heptosylglycals Mediated by Selectfluor
作者:Stéphane P. Vincent、Abdellatif Tikad
DOI:10.1002/ijch.201400148
日期:2015.4
AbstractThis study describes the development of a novel procedure of glycal fluorophosphorylation applied to the synthesis of a fluorinated analogue of an important bacterial metabolite. This procedure was applied to several heptose‐derived glycals, and the stereochemical outcome of the reaction was analyzed. Under optimized conditions, the reaction is β‐gluco selective, but a significant amount of the α‐gluco diastereomer is also generated.
[EN] HEPTOSE DERIVATIVES FOR USE IN THE TREATMENT OF BACTERIAL INFECTIONS<br/>[FR] NOUVEAUX DÉRIVÉS D'HEPTOSE ET APPLICATIONS BIOLOGIQUES DE CEUX-CI