The Direct Synthesis of Methyl 2,4-Di-<i>O</i>-benzyl-α-D-xylopyranoside by the Regiospecific Benzylation of Methyl α-D-Xylopyranoside
作者:Naohiko Morishima、Shinkiti Koto、Chiharu Kusuhara、Shonosuke Zen
DOI:10.1246/bcsj.55.631
日期:1982.2
The regiospecific benzylation of methyl α-D-xylopyranoside with benzyl chloride and sodium hydride produces methyl 2,4-di-O-benzyl-α-D-xylopyranoside in a 70% yield, together with the by-products, methyl 2,3- and 3,4-di-O-benzyl-α-D-xylopyranosides. The structure of the 2,4-di-O-benzyl derivative was confirmed through the alternative synthesis of the 2,3- and 3,4-di-O-benzyl derivatives via the O-isopropylidene
甲基 α-D-吡喃木糖苷与苄基氯和氢化钠的区域特异性苄基化以 70% 的产率产生甲基 2,4-二-O-苄基-α-D-吡喃木糖苷,以及副产物甲基 2,3 - 和 3,4-二-O-苄基-α-D-吡喃木糖苷。通过甲基α的O-异亚丙基和O-环己叉衍生物交替合成2,3-和3,4-二-O-苄基衍生物,证实了2,4-二-O-苄基衍生物的结构-D-吡喃木糖苷。