27,28,29,30-tetramethyl-8,22-bis(methylsulfinyl)pentacyclo[21.3.1.13,7.110,14.116,20]triaconta-1(26),3,5,7(30),10,12,14(29),16(28),17,19,23(27),24-dodecaen-2-one 、 27,28,29,30-tetramethyl-8,21-bis(methylsulfinyl)pentacyclo[21.3.1.13,7.110,14.116,20]triaconta-1(26),3,5,7(30),10,12,14(29),16(28),17,19,23(27),24-dodecaen-2-one 、
N-甲基吡咯烷酮 以39%的产率得到