anti-methyl 12-methyl-10,10-dimethyl-9a,10,15,15a-tetrahydro-9H-indolo[3,2,1-ij]quinolino[3,2-c][1,5]naphthyridine-2-carboxylate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
乙腈 为溶剂,
反应 0.5h,
以84%的产率得到methyl 12-methyl-10,10-dimethyl-10H-indolo[3,2,1-ij]quinolino[3,2-c][1,5]naphthyridine-2-carboxylate