(1S,2S,6R,14R,15R,16S,17R,20R)-17-hydroxy-11,15-dimethoxy-5-methyl-18-(2-phenylethyl)-13-oxa-5,18-diazaheptacyclo[13.5.2.12,8.01,6.02,14.016,20.012,23]tricosa-8(23),9,11,21-tetraen-19-one 在
三溴化硼 作用下,
以
氯仿 为溶剂,
反应 3.0h,
以69%的产率得到(1S,2S,6R,14R,15R,16S,17R,20R)-15,17-dihydroxy-11-methoxy-5-methyl-18-(2-phenylethyl)-13-oxa-5,18-diazaheptacyclo[13.5.2.12,8.01,6.02,14.016,20.012,23]tricosa-8(23),9,11,21-tetraen-19-one