Parallel synthesis of multi-branched oligosaccharides related to elicitor active pentasaccharide in rice cell based on orthogonal deprotection and glycosylation strategy
作者:Hiroshi Tanaka、Toru Amaya、Takashi Takahashi
DOI:10.1016/s0040-4039(03)00553-7
日期:2003.4
describe a parallel and efficient synthesis of multi-branched oligosaccharides 3a–g based upon the structure of the phytoalexin elicitor active branched pentasaccharide 2. One-pot sequential orthogonal deprotection of tetrasaccharide 5 with three different protecting groups provided each of seven glycosyl acceptors 4a–g. Glycosylation of the acceptors 4a–g, followed by deprotection provided branched oligosaccharides
我们描述了基于植物抗毒素激动剂活性支链五糖2的结构的多分支寡糖3a - g的并行和有效合成。具有三个不同保护基的四糖5的一锅顺序正交脱保护基提供了七个糖基受体4a – g中的每一个。受体4a - g的糖基化,然后脱保护,得到支链寡糖3a - g。从支架5到3a – g的所有反应过程 除了最终的氢解反应以外,是利用自动合成器以并行方式实现的。