3,4,6-三-O-苄基-beta-D-吡喃甘露糖-1,2-(甲基原乙酸酯)

乙酸酐

3,4-di-O-benzyl-1,2-(1-methoxyethylidene)-6-O-trityl-β-D-mannopyranoside

溴化苄

1,2-O-(1-methoxyethylidene)-6-O-trityl-β-D-mannopyranose