STEREOSELECTIVITY IN THE DEHYDRATIVE GLYCOSYLATION WITH HEPTA-<i>O</i>-BENZYL-GLUCOBIOSES
作者:Naohiko Morishima、Shinkiti Koto、Terumi Irisawa、Yosuke Hashimoto、Masayo Yamazaki、Takashi Higuchi、Shonosuke Zen
DOI:10.1246/cl.1982.1383
日期:1982.9.5
Dehydrative glycosylation of benzyl 2,3,4-tri-O-benzyl-α-d-glucopyranoside with hepta-O-benzyl-kojibiose, -sophorose, -nigerose, -laminaribiose, -maltose, -cellobiose, -isomaltose, and -gentiobiose gave 16 linear trisaccharide derivatives. The reaction of α(1→2)-, β(1→3)-, α(1→4)- and β(1→6) -linked biose derivatives shows the α-selectivity, while the reaction of the others does the β-selectivity.
苄基2,3,4-三-O-苄基-α-d-葡萄糖吡喃苷与七-O-苄基-高吉糖、-苏糖、-黑糖、-海藻糖、-麦芽糖、-纤维二糖、-异麦芽糖和-根苷的脱水糖苷化反应生成了16种线性三糖衍生物。α(1→2)、β(1→3)、α(1→4)和β(1→6)链接的二糖衍生物反应显示出α选择性,而其他衍生物则表现出β选择性。