117908-36-8
methyl 2,3,6,11-tetrahydro-3,6-dioxo-1H-indolizino[8,7-b]indole-11b(5H)-carboxylate
→
~91%
117908-37-9
11,11b-dihydro-1H-indolizino[8,7-b]indole-3,6(2H,5H)-dione