Chemical Constituents from Psychotria cadigensis and their chemotaxonomic relevance

Abstract

Phytochemical investigation on the leaves of Psychotria cadigensis, a Philippine endemic Rubiaceae species, led to the identification of three structurally-related nor-sesquiterpenoids (1-3). This represents the pioneering work on P. cadigensis and an addition to the list of Psychotria species which does not contain alkaloids. This is also the first report of three from the genus Psychotria.