(11R,15S)-12-((1S,2R,4R)-2-methoxy-7,7-dimethylbicyclo[2.2.1]heptane-1-carbonyl)-9,10-dihydro-9,10-[4,5]epoxazoloanthracen-13-one 在
lithium phenylmethanethiolate 作用下,
生成 (15S,19R)-16-oxa-18-azapentacyclo[6.6.5.02,7.09,14.015,19]nonadeca-2,4,6,9,11,13-hexaen-17-one