Large-Scale Synthesis of Crystalline 1,2,3,4,6,7-Hexa-<i>O</i>-acetyl-<scp>L</scp>-<i>glycero-</i>α-<scp>D</scp>-<i>manno</i>-heptopyranose
作者:Christian Stanetty、Ian R. Baxendale
DOI:10.1002/ejoc.201500024
日期:2015.4
The higher-carbon sugar l-glycero-d-manno-heptose is a major constituent of the inner core region of the lipopolysaccharide (LPS) of many Gram-negative bacteria. All preparative routes used to date require multiple steps, and scalability has been rarely addressed. Here a highly practical synthesis of crystalline 1,2,3,4,6,7-hexa-O-acetyl-l-glycero-alpha-d-manno-heptopyranose by a simple four-step sequence
高碳糖的l-甘油-d-甘露糖庚糖是许多革兰氏阴性细菌的脂多糖(LPS)的核心区域的主要组成部分。迄今为止,所有准备路线都需要多个步骤,而可扩展性很少得到解决。在此公开了一种高度实用的合成晶体1,2,3,4,6,7-六-O-乙酰基-1-甘油-α-d-甘露聚糖-七吡喃糖的简单方法,该方法是从l-lyxose开始的简单四步顺序进行的。仅需要两次重结晶,并且该过程以> 100 mmol的规模进行了证明,得到41 g的目标化合物。