JOURNAL ARTICLE

Synthesis, Characterization, and Biologic Activity of New Acyl Hydrazides and 1,3,4-Oxadiazole Derivatives

Irina Zarafu, Lilia Matei, Coralia Bleotu, Petre Ionita, Arnaud Tatibouët, Anca Păun, Ioana Nicolau, Anamaria Hanganu, Carmen Limban, Diana Camelia Nuta, Roxana Maria Nemeș, Carmen Cristina Diaconu, Cristiana Radulescu
Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry 2020 July 21, 25 (14)
32708236
Starting from isoniazid and carboxylic acids as precursors, thirteen new hydrazides and 1,3,4-oxadiazoles of 2-(4-substituted-phenoxymethyl)-benzoic acids were synthesized and characterized by appropriate means. Their biological properties were evaluated in terms of apoptosis, cell cycle blocking, and drug metabolism gene expression on HCT-8 and HT-29 cell lines. In vitro antimicrobial tests were performed by the microplate Alamar Blue assay for the anti-mycobacterial activities and an adapted agar disk diffusion technique for other non-tubercular bacterial strains. The best antibacterial activity (anti- Mycobacterium tuberculosis effects) was proved by 9 . Compounds 7 , 8 , and 9 determined blocking of G1 phase. Compound 7 proved to be toxic, inducing apoptosis in 54% of cells after 72 h, an effect that can be predicted by the increased expression of mRNA caspases 3 and 7 after 24 h. The influence of compounds on gene expression of enzymes implicated in drug metabolism indicates that synthesized compounds could be metabolized via other pathways than NAT2, spanning adverse effects of isoniazid. Compound 9 had the best antibacterial activity, being used as a disinfectant agent. Compounds 7 , 8 , and 9 , seemed to have antitumor potential. Further studies on the action mechanism of these compounds on the cell cycle may bring new information regarding their biological activity.

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