methyl 10-methyl-9,11-dioxo-5,8,8a,9,10,11,11a,11b-octahydro-6H-pyrrolo[3',4':3,4]pyrrolo[2,1-a]isoquinoline-8-carboxylate 在
N-溴代丁二酰亚胺(NBS) 作用下,
以20.2 mg的产率得到methyl 10-methyl-9,11-dioxo-5,9,10,11-tetrahydro-6H-pyrrolo [3',4':3,4] pyrrolo [2,1-a] isoquinoline-8-carboxylate