Acetic acid (1R,3S,4S,5S,7S,8S,9R,10R,13S)-7,10,13-triacetoxy-4-aminomethyl-4-hydroxy-5-methanesulfonyloxy-8,12,15,15-tetramethyl-tricyclo[9.3.1.03,8]pentadec-11-en-9-yl ester 以
1,4-二氧六环 为溶剂,
以90%的产率得到[(1R,3S,4S,7R,9S,10S,11R,12R,15S)-9,11,12-triacetyloxy-4-hydroxy-10,14,17,17-tetramethyl-6-azatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-15-yl] acetate