acetic acid (3S,4S,5S,6S)-2,5-diacetoxy-6-acetoxymethyl-3-((2R,3S,4S,5R,6R)-3,5-diacetoxy-6-acetoxymethyl-4-carbamoyloxy-tetrahydropyran-2-yloxy)tetrahydropyran-4-yl ester 在
氢溴酸 作用下,
以
二氯甲烷 为溶剂,
生成
3,4,6-tri-O-acetyl-2-O-(2,4,6-tri-O-acetyl-3-O-carbamoyl-α-D-mannopyranosyl)-α-L-gulopyranosyl bromide