(11S)-4,5,7-trimethoxy-12,12-dimethyl-6-propan-2-yltricyclo[9.4.0.03,8]pentadeca-1(15),3(8),4,6-tetraen-9-one 在
N-溴代丁二酰亚胺(NBS) 作用下,
以
水 、
丙酮 为溶剂,
以83%的产率得到(1S,11S,15S)-15-bromo-1-hydroxy-4,5,7-trimethoxy-12,12-dimethyl-6-propan-2-yltricyclo[9.4.0.03,8]pentadeca-3(8),4,6-trien-9-one