间硝基苯甲醛 、
β-氨基巴豆酸甲酯 、
acetoacetic acid-N-benzoyl-4-piperidinyl ester 、 以
四氢呋喃 为溶剂,
反应 33.0h,
以to obtain 2.84 g of 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid-3-(N-benzoyl-4-piperidinyl) ester-5-methyl ester [compound of the general formula (I) wherein R1 =的产率得到2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid-3-(N-benzoyl-4-piperidinyl) ester-5-methyl ester