Methyl O-(2,4-di-O-benzoyl-3-O-bromoacetyl-alpha-L-rhamnopyranosyl)-(1-->3)- 2,4-di-O-benzoyl-alpha-L-rhamnopyranoside was treated with dichloromethyl methyl ether and ZnCl2 to give O-(2,4-di-O-benzoyl-3-O-bromoacetyl-alpha-L-rhamnopyranosyl)-(1-->3)2,4- di-O- benzoyl-alpha-L-rhamnopyranosyl chloride. Similar treatment of methyl O-(3,4,6-tri-O-acetyl-2-azido-2-deoxy-alpha-D- glucopyranosyl)-(1-->3)-2
甲基O-(2,4-二-O-苯甲酰基-3-O-
溴乙酰基-α-L-鼠李
吡喃糖基)-(1-> 3)-2,4-二-O-苯甲酰基-α-
L-鼠李糖吡喃糖苷用二
氯甲基甲基醚和ZnCl2处理得到O-(2,4-二-O-苯甲酰基-3-O-
溴乙酰基-α-
L-鼠李糖基)-(1-> 3)2,4-二-O -苯甲酰基-α-
L-鼠李糖基
氯。甲基O-(3,4,6-三-O-乙酰基-2-
叠氮基-2-脱氧-α-
D-吡喃葡萄糖基)-(1-> 3)-2,4-二-O-的相似处理苯甲酰基-α-L-鼠李
吡喃糖苷(13)得到结晶O-(3,4,6-tir-O-乙酰基-2-
叠氮基-2-脱氧-α-
D-吡喃葡萄糖基)-(1-> 3)- 2,4-二-O-苯甲酰基-α-
L-鼠李糖基
氯(14),也通过处理甲基O-(3,4,6-三-O-乙酰基-2-
叠氮基-2-脱氧基而获得-α-
D-吡喃葡萄糖基)-(1→3)-2,4-二-O-苯甲酰基-1-
硫代α-L-鼠李
吡喃糖苷(12)与
氯。与转换12->