tert-butyl (6R,13R,14S,17S)-14-methyl-9-oxo-16-azatetracyclo[8.7.0.02,6.013,17]heptadeca-1(10),2-diene-16-carboxylate 在
溴 作用下,
以
氯仿 为溶剂,
反应 0.33h,
以88%的产率得到(1R,2S,5S,12R,13S,19S)-2-bromo-13-methyl-17-oxa-15-azapentacyclo[10.5.2.01,5.09,18.015,19]nonadec-9(18)-ene-8,16-dione