2-((E)-2-Chloro-2-trimethylsilanyl-vinyl)-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid diisopropyl ester
2-((E)-2-Chloro-2-trimethylsilanyl-vinyl)-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 5-ethyl ester 3-isopropyl ester
2-((E)-2-Chloro-2-trimethylsilanyl-vinyl)-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 3-isopropyl ester 5-methyl ester
2-[1-(3-Nitro-phenyl)-meth-(E)-ylidene]-3-oxo-5-trimethylsilanyl-pent-4-ynoic acid isopropyl ester
2-methyl-4-(3-nitro-phenyl)-6-trimethylsilanylethynyl-1,4-dihydro-pyridine-3,5-dicarboxylic acid 3-ethyl ester 5-isopropyl ester