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The paper presents the synthesis, characterization and cytotoxicity assessment of five organic compounds containing 4-(phenylsulfonyl)phenyl fragment in the molecule, namely of three acyclic precursors derived from phenylalanine (from N-acyl-a-amino acids, N-acyl-a-amino acyl chlorides and N-acyl-a-amino ketones class) and of the cyclization products: a 1,3-oxazol-5(4H)-one and, respectively, a 1,3-oxazole substituted in position 5 with the p-tolyl group. The synthesized compounds were characterized by spectral methods (UV-Vis, FT-IR, 1H-NMR, 13C-NMR, and MS) and elemental analysis, which confirmed their structures. For the determination of the purity of the new compounds, the RP-HPLC method was used. In view of the therapeutic potential of the newly synthesized compounds, we evaluated their toxicological profile using the Daphnia magna bioassay.

Synthesis, characterization and Cytotoxicity Evaluation of New Heterocyclic Compounds with Oxazole Ring Containing 4-(Phenylsulfonyl)phenyl Moiety