methyl (2R,4S,5R,6R)-5-acetamido-4-acetyloxy-6-[(S)-hydroxy-[(4R)-2-phenyl-1,3-dioxolan-4-yl]methyl]-2-prop-2-enoxyoxane-2-carboxylate 在
D(+)-10-樟脑磺酸 作用下,
以
乙腈 为溶剂,
反应 3.5h,
以26%的产率得到methyl (2R,4S,5R,6R)-5-acetamido-4-acetyloxy-6-[(2R,4R,5R)-5-hydroxy-2-phenyl-1,3-dioxan-4-yl]-2-prop-2-enoxyoxane-2-carboxylate