Abstract

Background: 1,3,4-oxadiazoles square measure a very important category of heterocyclic compounds with a broad variety of biological activities such as medicament, analgesic, ulcerogenicity, apoptosis inducer, anti-mycobacterial, antifungal, antitumor, P-glycoprotein Inhibitors, pesticides, 4-hydroxylase inhibitors, and antiepileptic drug activity. Aims and Objectives: The present study is undertaken to study the evaluation of new 1,3,4-oxadiazole derivatives bearing sugars and α-aminophosphonate derived from 4-nitrophenol as anticancer agents.
Materials and Methods: A sequence of acyclic nucleoside derivatives, arylidines, oxadiazole, and α-aminophosphonates derived from 1,3,4-oxadiazole moiety were synthesized, observed by thin-layer chromatography, and purified by crystallization and another chromatographic methods; then, the prepared compounds were confirmed chemically by spectroscopic analysis such as infrared, mass spectra, and1 H nuclear magnetic resonance and also elucidated by elemental analysis.
Results: The synthesized compounds were tested for their anticancer activity by measuring the inhibitory activity against hepatocellular carcinoma cell method under conditions with 50% inhibitory concentration (IC50)= 38.8 ± 5.4 μg/ml, IC50 = 89.1 ± 7.6 μg/ml, IC50 = 25.4 ± 3.8 μg/ml, IC50 = 90.2. ± 8.1 μg/ml, IC50 = 86.9 ± 7.9 μg/ml, IC50 = 248 ± 19.6 μg/ml, and IC50 = 12.5 ± 4.7 μg/ml for compounds 3, 7a, 9a, 11d, 13b, 15e, and 16a, respectively. 5-fluorouracil was used as reference anticancer drug in this work. Conclusion: The synthesized compounds 3 (hydrazide), 7a and 9a (acyclic nucleosides), 11d (arylidines derivative), 13b (oxadiazoline derivative), and 15e and 16a (α-aminophosphonate derivatives) show moderate-to-high activity against hepatocellular carcinoma cells.