Structure and Synthesis of New Phenolic Amides from Piper nigrum L.

Abstract

New phenolic amides, N-trans-feruloyl piperidine (4a), N-5-(4-hydroxy-3-methoxyphenyl)-2E, 4E-pentadienoyl piperidine (5a) and N-5-(4-hydroxy-3-methoxyphenyl)-2E-pentenoyl piperidine (6a) were isolated from the fruit of white pepper (Piper nigrum L.). The fine structure of each compound was examined by spectroscopic analysis and synthesis.