Synthesis and antimicrobial activity of a new series of 1,4-dihydropyridine derivatives

A series of 1,4-dihydropyridine derivatives (1a-g) were prepared from Hantzsch syntheses. The compounds 1a-g were reacted with thiosemicarbazide to give the new series of compounds 2a-g. IR, H-1-NMR, C-13-NMR, mass spectral and elemental analysis confirmed the synthesized compounds. The synthesized compounds were also screened for their antimicrobial activity.