作者:M. Carmen Galan、Andre P. Venot、Robert S. Phillips、Geert-Jan Boons
DOI:10.1039/b317067e
日期:——
methyl N-acetyllactosamine was accomplished by a two-step procedure involving oxidation to a ketone followed by reduction with NaBH(4). After deprotection, the resulting derivative was examined as a substrate for [small alpha]-(2,6)- and [small alpha]-(2,3)-sialyltransferase and fucosyltransferase III, IV, V and VI. It was found that none of these enzymes could glycosylate. However, it showed exquisite
甲基N-乙酰基乳糖胺的C-2 [伯或分钟]羟基的构型转化可通过两步过程完成,包括氧化成酮,然后用NaBH(4)还原。脱保护后,检查所得衍生物作为α-(2,6)-和α-(2,3)-唾液酸转移酶和岩藻糖基转移酶III,IV,V和VI的底物的底物。发现这些酶均不能糖基化。但是,它对岩藻糖基转移酶VI的抑制作用表现出极好的选择性。动力学数据支持一种异常机制,其中抑制剂可与GDP-岩藻糖复合物以及另一种酶形式结合。