2,6-Dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 3-cyclopentyl ester 5-(2-methyl-[1,3]dioxolan-2-ylmethyl) ester

4-(2-Chloro-phenyl)-2,6-dimethyl-1,4-dihydro-pyridine-3,5-dicarboxylic acid 3-methyl ester 5-(2-oxo-propyl) ester

4-(2-Bromo-phenyl)-2,6-dimethyl-1,4-dihydro-pyridine-3,5-dicarboxylic acid 3-methyl ester 5-(2-oxo-propyl) ester

methyl 2-oxopropyl 4-(2,3-dichlorophenyl)-1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate

methyl 2-oxopropyl 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylate