Acetic acid 8-acetoxy-5-hydroxy-2-phenyl-6-((3aR,4R,5aS,9aS,9bR)-2,2,8,8-tetramethyl-hexahydro-[1,3]dioxolo[4',5':3,4]benzo[1,2-d][1,3]dioxin-4-ylamino)-hexahydro-benzo[1,3]dioxin-7-yl ester 在
吡啶 、
甲基磺酰氯 作用下,
以13%的产率得到Acetic acid (4aR,5R,6R,7S,8S,8aR)-8-acetoxy-5-chloro-2-phenyl-6-((3aR,4R,5aS,9aS,9bR)-2,2,8,8-tetramethyl-hexahydro-[1,3]dioxolo[4',5':3,4]benzo[1,2-d][1,3]dioxin-4-ylamino)-hexahydro-benzo[1,3]dioxin-7-yl ester