2,2-Dimethyl-propionic acid 3-[(3S,6S,9S,12S,15S)-6,9-diisobutyl-7,12-dimethyl-2,5,8,11,14-pentaoxo-15-(2,2,2-trifluoro-acetylamino)-1,4,7,10,13-pentaaza-cyclononadec-3-ylmethyl]-1H-indol-5-yl ester 在
N-溴代丁二酰亚胺(NBS) 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以75%的产率得到2,2-Dimethyl-propionic acid 2-bromo-3-[(3S,6S,9S,12S,15S)-6,9-diisobutyl-7,12-dimethyl-2,5,8,11,14-pentaoxo-15-(2,2,2-trifluoro-acetylamino)-1,4,7,10,13-pentaaza-cyclononadec-3-ylmethyl]-1H-indol-5-yl ester