A 2,4-O-[(Z)-2-butenylene]-bridged glucopyranose: efficient construction of the bicyclic skeleton and its axial-rich twist-boat conformation
作者:Yang Cao、Yusuke Kasai、Masafumi Bando、Mayumi Kawagoe、Hidetoshi Yamada
DOI:10.1016/j.tet.2009.01.019
日期:2009.3
Synthesis and conformational analyses of 1-O-acetyl-3,6-di-O-benzyl-2,4-O-[(Z)-2-butenylene]-β-d-glucopyranose are described. The construction of the trioxabicyclo[6.3.1]dodecane skeleton of the compound was initiated from a ring-opened glucose, followed by the successive cyclization of first the nine-membered ring and then the six-membered ring. The pyranose of the compound was in 3S1, an axial-rich
描述了1 - O-乙酰基-3,6-二-O-苄基-2,4- O -[(Z)-2-丁烯基]-β-d-吡喃葡萄糖的合成和构象分析。该化合物的三氧杂双环[6.3.1]十二烷骨架的构建是从开环的葡萄糖开始的,随后是先将九元环然后是六元环连续环化。该化合物的吡喃糖为3 S 1,一种富含轴向的扭转舟构象。该结果证明了与使用庞大的甲硅烷基保护基团的方法相比,用于将吡喃糖限制成富含轴向的扭转舟构象的替代方法。