Ethyl-4,5-dihydro-3-hydroxy-3H-pyrazolo<4,3,2-i,j>chinolin-4-carboxylat 在
palladium on activated charcoal
sodium hydroxide 、
氢气 作用下,
生成
(+/-)-4,5-Dihydro-3H-pyrazolo<4,3,2-i,j>chinolin-4-carbonsaeure 、 7,8-Dihydro-6H-pyrazolo[4,5,1-ij]quinoline-4-carboxylic acid ethyl ester