6-O-benzylidene-α- d -glucopyranoside, which is available in four steps from commercial α,α-trehalose. The 3,2′-ditriflate of the blocked disaccharide was first treated with sodium azide under phase-transfer conditions, which effected regioselective displacement of the 3-triflyloxy group, and subsequent reaction with sodium benzoate in N,N-dimethylformamide displaced the 2′-triflyloxy group. The blocked
摘要由已知的2-O-苄基-4,6-O-亚苄基-α-d-苯并
吡喃糖基3-O-苄基-4合成了3-
氨基-3-脱氧-α-d-甘露
吡喃糖基α-d-甘露
吡喃糖苷, 6-O-亚苄基-α-d-
吡喃
葡萄糖苷,可从市售α,α-
海藻糖分四个步骤获得。首先在相转移条件下用
叠氮化
钠处理封闭的二糖的3,2'-滤液,这会导致3-三
氟乙氧基的区域选择性置换,随后与
苯甲酸钠在N,N-二甲基甲酰胺中的反应置换了2' -三
氟乙氧基。如此获得的α-d-甘露
吡喃糖基α-d-甘露
吡喃糖苷的封端的3-
叠氮基2'-O-苯甲酰基衍
生物按常规方式进行脱苯甲酰化和脱苄基化,随后,