(9S,12R,16S)-6,6-cyclopropyl-12-pyridin-3-ylmethyl-16-((E)-4-tritylsulfanyl-but-1-enyl)-9-tritylsulfanylmethyl-1-oxa-4,7,10,13-tetraaza-cyclohexadecane-2,5,8,11,14-pentaone 在
碘 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 2.0h,
以24%的产率得到(E)-(1S,10S,21R)-7,7-cyclopropyl-21-pyridin-3-ylmethyl-2-oxa-12,13-dithia-5,8,20,23-tetraaza-bicyclo[8.7.6]-tricos-16-ene-3,6,9,19,22-pentaone