Synthesis, characterization and antioxidant activity of a new series of chiral N-boc oraganotellurium compounds, (CH 3 ) 3 OC(O)NHCH(R)C(O)NHCH 2 CH 2 Te-C 6 H 4 -4-OCH 3 , containing carbamate and peptide groups have been reported in this paper. These chiral peptides were synthesized in good to excellent yields, via acid-amine coupling reaction of N-boc L-amino acids with 2-(4-methoxyphenyltelluro) ethylamine in presence of dicyclohexyl carbodimide (DCC) at room temperature. The elemental analyses, Fourier transform infrared (FTIR), 1 H and 13 C { 1 H} nuclear magnetic resonance (NMR) spectra and mass spectra were characteristic. Specific optical rotation (SOR) was also determined. In vitro antioxidant activity of these multi-functional compounds in methanol has been evaluated against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals with 2,6-di-tert-butyl-4-methylphenol (BHT) as a standard reference compound. The IC 50 (inhibitory concentration 50) values of these chiral peptides revealed significant inhibition against DPPH radicals and found to be effective antioxidants.
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