Main Reaction: trans-Cinnamic acid >> p-Coumaric acid

Reference: PubMed ID: 22607188
Authors: Yuan Y, Song L, Li M, Liu G, Chu Y, Ma L, Zhou Y, Wang X, Gao W, Qin S, Yu J, Wang X, Huang L
Title: Genetic variation and metabolic pathway intricacy govern the active compound content and quality of the Chinese medicinal plant Lonicera japonica thunb.
Published: 2012 May 20

trans-Cinnamic acid --> p-Coumaric acid