马来酸酐 、
7-(1,3-Dimethyl-6,7-dihydro-2-benzothiophen-4-yl)-1,3-dimethyl-4,5-dihydro-2-benzothiophene 以
xylene 为溶剂,
生成 (10S,11S,15R,16R)-4,6,20,22-tetramethyl-13-oxa-5,21-dithiahexacyclo[14.7.0.02,10.03,7.011,15.019,23]tricosa-1,3,6,19,22-pentaene-12,14-dione