Dihydrochalcones and Flavonolignans from <i>Iryanthera lancifolia</i>
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TL;DR
An extract from the pericarps of I. lancifolia afforded two dihydrochalcones and two flavonolignans, with compounds 2-4 being of novel structure, and antioxidant activities of compounds 1-4 were evaluated.
Abstract
An extract from the pericarps of I. lancifolia afforded two dihydrochalcones (1 and 2) and two flavonolignans (3 and 4), with compounds 2-4 being of novel structure. The antioxidant activities of compounds 1-4 were evaluated through the measurement of malondialdehyde production, and Q(1/2) (concentration necessary for 50% inhibition of autoxidation) data were calculated. The Q(1/2) values obtained for 1-4 and the standard compounds alpha-tocopherol and quercetin were 6.9, 4.7, 5.5, 4.8, 12.1, and 7.6 microg/mL, respectively.