5,5-dimethyl-3-(N-naphthylamino)-cyclohex-2-enone 、
4-ethoxycarbonyl-5-phenyl-N-benzyldioxopyrroline 以
间二甲苯 为溶剂,
以74%的产率得到ethyl 1'-benzyl-10,10-dimethyl-2',8-dioxo-5'-phenyl-1',2',9,10,11,12-hexahydro-8H-spiro[benzo[c]acridine-7,3'-pyrrole]-4'-carboxylate