Ethyl 8-[1,1-dicarbomethoxy-2-carboethoxy-ethyl]-4-Oxo-4H-Quinolizine-3-Carboxylate 、
乙基4-氧代-4H-喹嗪-3-羧酸酯 在
水 、
乙酸乙酯 作用下,
以gave 8-(1,2-dicarboxyethyl)-4-oxo-4H-quinolizine-3-carboxylic acid (20a) as a yellow solid in 48% yield的产率得到8-(1,2-Dicarboxyethyl)-4-Oxo-4H-Quinolizine-3-Carboxylic Acid