dimethyl 6-ethyl-1-methyl-1,6-dihydro[1,2]thiazepino[5,4,3-cd]indole-3,8-dicarboxylate 2,2-dioxide 、
1-碘丁烷 、
dimethyl 1-methyl-1,6-dihydro[1,2]thiazepino[5,4,3-cd]indole-3,8-dicarboxylate 2,2-dioxide 以to give the title compound (D20) as a yellow solid的产率得到dimethyl 6-butyl-1-methyl-1,6-dihydro[1,2]thiazepino[5,4,3-cd]indole-3,8-dicarboxylate 2,2-dioxide