Paper
Synthesis and Biological Evaluation of 2‐(Halophenyl)benzoxazole‐5‐Carboxylic Acids as Potential Anti‐Inflammatory and Cytotoxic Agent with Molecular Docking Studies
Published Sep 1, 2022 · Sumit Thakral, Devinder Kumar, Samridhi Thakral
Chemistry & Biodiversity
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Abstract
2‐Halogenatedphenyl benzoxazole‐5‐carboxylic acids with mono‐halogen (chloro, bromo and fluoro) substituted at ortho‐, meta‐ and para‐positions on the phenyl ring were designed and synthesized based on significance of presence of halogen in increasing number of marketed halogenated drugs and importance of benzoxazoles. These 2‐alogenatedphenylbenzoxazole‐5‐carboxylic acids and their methyl esters were screened for anti‐inflammatory activity, and cytotoxicity. 2‐(3‐Chlorophenyl)benzoxaole‐5‐carboxylic acid (6b) exhibited significant anti‐inflammatory activity with IC50 values of 0.103 mM almost equivalent to the standard drug ibuprofen (0.101 mM). 2‐(4‐Chlorophenyl)benzoxaole‐5‐carboxylic acid (6c) showed excellent cytotoxic activity against 22Rv1 cells (human prostate carcinoma epithelial cell lines) with IC50 value of 1.54 μM better than that of standard drug doxorubicin having IC50 value of 2.32 μM. More importantly, the selectivity index of this potential molecule was found to be 57.74. Molecular docking analysis resulted in good binding interactions of these compounds with their respective biochemical targets viz. Cyclooxygenase‐2 and aldo‐keto reductase IC3.
In Vitro Study2(3Chlorophenyl)benzoxaole-5-carboxylic acid (6b) shows significant anti-inflammatory activity and 2(4Chlorophenyl)benzoxaole-5-carboxylic acid (6c) shows excellent cytotoxic activity against
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