N-甲基马来酰亚胺 、
thieno<3,4-b>quinoxaline 在
sodium hydroxide 作用下,
生成 (1R,12S,13R,17S)-15-methyl-18-thia-3,10,15-triazapentacyclo[10.5.1.02,11.04,9.013,17]octadeca-2,4,6,8,10-pentaene-14,16-dione 、 (1R,12S,13S,17R)-15-methyl-18-thia-3,10,15-triazapentacyclo[10.5.1.02,11.04,9.013,17]octadeca-2,4,6,8,10-pentaene-14,16-dione