苯硒酚 、
methyl (1R,2R,5S,8R,9S,10R,11S,12S)-12-acetyloxy-11-methyl-6-methylidene-7,16-dioxo-5-phenylselanyl-15-oxapentacyclo[9.3.2.15,8.01,10.02,8]heptadecane-9-carboxylate 在
18-冠醚-6 、 sodium hydride 作用下,
以
二氯甲烷 为溶剂,
以98%的产率得到methyl (1R,2R,5S,8R,9S,10R,11S,12S)-12-acetyloxy-11-methyl-7,16-dioxo-5-phenylselanyl-6-(phenylselanylmethyl)-15-oxapentacyclo[9.3.2.15,8.01,10.02,8]heptadecane-9-carboxylate