(3aS,6aS)-5-[(3aS,4S,6R,6aS)-4-hydroxy-4-(iodomethyl)-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-6-yl]-2,2-dimethyl-3a,6a-dihydrocyclopenta[d][1,3]dioxol-4-one 、
乙酸酐 在
吡啶 作用下,
以50%的产率得到[(3aS,4R,6R,6aS)-6-[(3aS,6aS)-2,2-dimethyl-4-oxo-3a,6a-dihydrocyclopenta[d][1,3]dioxol-5-yl]-4-(iodomethyl)-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl] acetate