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Schiff base ligand (HL) derived from condensation of 3-methoxy salicylaldehyde with 4-aminobenzoic acid and its metal(II) complexes containing triphenylphosphine of the type [MCl(PPh3)(L)] (M = Ni2+, Co2+ or Cu2+; L = bitendate Schiff base ligand) have been synthesized. All the metal(II) complexes were characterized by analytical and spectroscopic (FT-IR, electronic, ESI-Mass, ESR, 1H, 13C NMR and 31P NMR) techniques. All the synthesized compounds were evaluated for in vitro antimicrobial efficiency against Gram-positive bacteria, Gram-negative bacteria and fungai using the agar well diffusion method. Anticancer activity in vitro of the ligand and its metal(II) complexes were also screened against MCF-7 cancer cell lines (human breast cancer cell line).

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A new organic compound, N-[4-(1,3-benzothiazol-2-ylcarbamoyl)-phenyl]pyrazine-2-carboxamide was synthesized through the reaction between 4-amino-N-(benzo[d]thiazol-2-yl)benzamide and pyrazine-2-carboxylic acid. The synthesized compound has been characterized by spectroscopic techniques such as 1H NMR, 13C NMR, FT-IR and mass spectroscopy. The synthesized compound was screened to antibacterial (Staphylococcus aureus, Klebsiella pneumonia and Escherichia coli), antifungal (Candida albicans and Aspergillus niger) activities. The anticancer activity of the title compound was also evaluated against MDA-MB-231 breast cancer cells.