[(2S,3S,4E,6S,7R,10R)-7-methoxy-3,7-dimethyl-2-[(2E,4E,6S)-6-methyl-7-[(2R,3R)-3-[(2S,3S)-3-triethylsilyloxypentan-2-yl]oxiran-2-yl]hepta-2,4-dien-2-yl]-12-oxo-10-triethylsilyloxy-1-oxacyclododec-4-en-6-yl] (4-nitrophenyl) carbonate 在
氟化氢吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 、
甲基叔丁基醚 为溶剂,
生成 [(2S,3S,4E,6S,7R,10R)-10-hydroxy-2-[(2E,4E,6S)-7-[(2R,3R)-3-[(2R,3S)-3-hydroxypentan-2-yl]oxiran-2-yl]-6-methylhepta-2,4-dien-2-yl]-7-methoxy-3,7-dimethyl-12-oxo-1-oxacyclododec-4-en-6-yl] 4-cycloheptyl-4-methylpiperazin-4-ium-1-carboxylate;iodide