(2R,3R,4S)-3-乙酰氨基-4-乙酰氧基-2-((1R,2R)-1,2,3-三乙酰氧基丙基)-3,4-二氢-2H-吡喃-6-羧酸甲酯

溴化苄

硫酚

methyl 5-acetamido-4,7,8,9-tetra-O-benzyl-3-bromo-3,5-dideoxy-D-erythro-L-manno-2-nonulopyranosonate