Abstract The tert -butyl- and the 2,2,2-trichloroethyl α- and β- D -galactopyranosides were prepared and both α- D -glycosides were selectively benzoylated to give the 2,3,6-tri- O -benzoyl- D -galactopyranosides. Cleaving of the glycosidic groups is described. The glycosides are useful intermediates for oligosaccharide synthesis where generation of a reducing sugar terminus under mild conditions is
摘要制备了叔丁基和2,2,2-三
氯乙基α-和β-D-
吡喃半
乳糖苷,并选择性地对两种α-D-糖苷进行苯甲酰化,得到2,3,6-三-O-苯甲酰基- D-
吡喃半
乳糖苷。描述了糖苷基团的裂解。糖苷是
寡糖合成的有用中间体,其中需要在温和条件下产生还原糖末端。