Article ID Journal Published Year Pages File Type
1369347 Bioorganic & Medicinal Chemistry Letters 2013 5 Pages PDF
Abstract

Thymol and carvacrol are well known antioxidants found in the extract of the plants of thyme species. The Schiff bases of 2-iso-propyl-5-methyl-phenol (thymol/1a), 2-tert-butyl-5-methyl-phenol (1b) and 5-iso-propyl-2-methyl-phenol (carvacrol/1c) exhibited much better antioxidant activity than thymol and carvacrol in DPPH assay. Ten compounds (4k, 4l, 4r, 5k, 5l, 5q, 5r, 6k, 6l and 6r) showed better or similar activity as compared to the reference compound ascorbic acid. Twenty-four most active compounds were also screened by ABTS method and showed 60–90% inhibition at 5 μg/mL concentration.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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