Synthesis and Biological Evaluation of a New Sialyl Lewis X Mimetic Derived from Lactose
作者:Stephanie M. Chervin、John B. Lowe、Masato Koreeda
DOI:10.1021/jo025579t
日期:2002.8.1
A sialyl Lewis X (sLe(x)) mimetic compound, 2-(trimethylsilyl)ethyl 3-O-carboxymethyl-beta-D-galactopyranosyl-(1-->4)-[alpha-L-fucosyl-(1-->6)]-beta-D-glucopyranoside (2a), has been synthesized in 14 steps from D-lactose. This synthesis features the use of the activated glycosylating donor, lactosyl iodide, in a Koenigs-Knorr sequence, the regioselective derivatization at the C-3 position of the galactose
唾液酸化的路易斯X(sLe(x))模拟化合物2-(三甲基甲硅烷基)乙基3-O-羧甲基-β-D-吡喃半乳糖基-(1-> 4)-α-L-岩藻糖基-(1- > 6)]-β-D-吡喃葡萄糖苷(2a)已由D-乳糖分14步合成。这种合成的特点是使用Koenigs-Knorr序列中活化的糖基化供体乳糖基碘,半乳糖部分C-3位置的区域选择性衍生化以及岩藻糖α(1-> 6)的立体选择性结构)-乳糖键。测试该模拟物在剪切应力条件下抑制人多形核白细胞(hPMNL)与固定化重组人E-选择素粘附的能力。