1,4-二氧六环 、
5,6,9,10-tetrahydro-6-phenyl-10-hydroxyimino-4H,8H-cyclopenta[4,5]pyrrolo[3,2,1-ij]quinoline 在
PPA 作用下,
以
(2S)-N-methyl-1-phenylpropan-2-amine hydrate 为溶剂,
以71%的产率得到5,6,8,9,10,11-hexahydro-6-phenyl-11-oxo-4H-pyrido[3',4':4,5]pyrrolo[3,2,1-ij] quinoline