Progress in the Chemistry of Organic Natural Products ... - Separare
spectrum, the lactone carbonyl of a coumarin nucleus exhibits strong absorption ... benzylic protons appear as an AB system between δ 4.97 and 5.00 ppm ...... gossypifolia), showed lipid peroxidation inhibitory activity, with IC50 values of 0.7 ...... Their IR spectra revealed signals for hydroxy groups, γ-lactones, and olefins.
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separare's website is separare.ufscar.br