benzyl (2S,3R)-2-[[(2S)-5-[(7R)-7-butanoyloxy-5-chloro-3-(3-hydroxypropyl)-7-methyl-6,8-dioxoisoquinolin-2-yl]-2-(9H-fluoren-9-ylmethoxycarbonylamino)pentanoyl]amino]-3-hydroxybutanoate 在
碘 、
silver nitrate 作用下,
以
水 、
二甲基亚砜 为溶剂,
反应 72.0h,
以25%的产率得到benzyl (2S,3R)-2-[[(2S)-5-[(3S,4S,7R)-7-butanoyloxy-5-chloro-4-hydroxy-7-methyl-6,8-dioxospiro[4H-isoquinoline-3,2'-oxolane]-2-yl]-2-(9H-fluoren-9-ylmethoxycarbonylamino)pentanoyl]amino]-3-hydroxybutanoate