Antioxidant Activity of a New Capsaicin Derivative from Capsicum annuum

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Abstract
A new capsaicin derivative, 6‘ ‘,7‘ ‘-dihydro-5‘,5‘ ‘‘-dicapsaicin (1), and a known capsaicin metabolite, ω-hydroxycapsaicin (2), 1 were isolated from the fruit of Capsicum annuum. Their structures were established on the basis of spectroscopic evidence. Compound 1 showed almost the same antioxidant activity as capsaicin, but did not have a pungent taste.