Synthesis of O-α-d-glucopyranosyl-(1→4)-O-α-d-xylopyranosyl-(1→4)-O-α-d-xylopyranosyl-(1→4)-d-glucopyranose as a substrate analogue of alpha amylase
作者:Kenichi Takeo、Masayuki Nakagen、Yasuhiro Teramoto、Yasunori Nitta
DOI:10.1016/0008-6215(90)84242-m
日期:1990.7
tetrasaccharide α- d -Glc p -(1→4)-α- d -Xyl p -(1→4)-α- d -Xyl p -(1→4)- d -Glc p ( 1 ) has been synthesized, as a substrate analogue of alpha amylase, by silver perchlorate-catalyzed glycosylation of benzyl 2,3,6-tri- O -benzyl-4- O -(2,3-di- O -benzyl-α- d -xylopyranosyl)-β- d -glucopyranoside ( 30 ) with 2,3-di- O -benzyl-4- O -(2,3,4,6-tetra- O -benzyl-α- d -glucopyranosyl)-α- d -xylopyranosyl chloride or
摘要四糖α-d -Glc p-(1→4)-α-d -Xyl p-(1→4)-α-d -Xyl p-(1→4)-d -Glc p(1)具有通过高氯酸银催化的苄基2,3,6-三-O-苄基-4-O-(2,3-二-O-苄基-α-d-吡喃并吡喃糖基)-β-d-吡喃葡萄糖苷(30)与2,3-二-O-苄基-4-O-(2,3,4,6-四-O-苄基-α-d-吡喃葡萄糖基)-α- d-吡喃吡喃糖基氯或通过三氟甲磺酸甲酯促进的30与甲基2,3-二-O-苄基-4-O-(2,3,4,6-四-O-苄基-α-d-吡喃葡萄糖基)的缩合-1-硫代-β-d-吡喃吡喃糖苷,然后除去所得四糖衍生物40的保护基。