Regioselective synthesis of derivatives of l-idopyranuronic acid: A key constituent of glycosaminoglycans
作者:Iontcho R. Vlahov、Robert J. Linhardt
DOI:10.1016/0040-4039(95)01810-5
日期:1995.11
Synthesis of new and potentially universal l-idopyranuronic glycosyl-donor and/or -acceptor 13 was performed starting from d-glucofuranurono-6,3-lactone 1. After simple C-5-epimerization, C-1thioacetalization and regioselective p-methoxybenzylidenation to the hydroxylactone 6, the lactone ring was opened. The resulting diolamide stereoselectively protected, providing compound 7. Regioselective reductive
新的和潜在的通用的I-吡喃葡萄糖醛糖基供体和/或-受体13的合成从d-呋喃呋喃尿酸-6,3-内酯1开始。在简单的C-5-表异构化,C-1硫缩醛化和区域选择性对甲氧基苄基化为羟基内酯6之后,打开内酯环。所得到的二醇酰胺被立体选择性地保护,从而提供化合物7。1,3-二恶烷环的区域选择性还原性裂解和随后的脱保护提供了目标分子13。