Amides from the stem of Capsicum annuum

Abstract

7′-(4′-hydroxyphenyl)-N-[(4-methoxyphenyl)ethyl]propenamide (1), 7′-(3′,4′-dihydroxyphenyl)-N-[(4-methoxyphenyl)ethyl] propenamide (2), N-p-trans-coumaroyltyramine (3), N-trans-caffeoyltyramine (4), β-sitostenone (5), ferulic acid (6), hydroferulic acid (7), 5-hydroxy-3,4-dimethoxycinnamic acid (8), veratic acid (9), vanillic acid (10), isovanillic acid (11), syringic acid (12), (+)-syringaresinol (13), and pheophorbide a (14) were isolated from the stems of Capsicum annuum (Solanaceae). Among them, 1 is a new amide compound. The structures of these compounds were characterized and identified by spectral analyses.