4-Chloro-2-[1-(3-nitro-phenyl)-meth-(Z)-ylidene]-3-oxo-butyric acid methyl ester

2-[1-Chloro-meth-(Z)-ylidene]-1-(4-methoxy-phenyl)-6-methyl-4-(3-nitro-phenyl)-1,2,3,4-tetrahydro-pyridine-3,5-dicarboxylic acid 5-ethyl ester 3-methyl ester

2-[1-Chloro-meth-(Z)-ylidene]-1-(4-ethoxy-phenyl)-6-methyl-4-(3-nitro-phenyl)-1,2,3,4-tetrahydro-pyridine-3,5-dicarboxylic acid 5-ethyl ester 3-methyl ester