Chemical constituents from Psychotria yunnanensis and its chemotaxonomic study

Phytochemical investigation on the aerial parts of Psychotria yunnanensis led to the isolation of four norisoprenoids (1–4), one monoterpenoid (5), and eleven phenolic compounds (6–16). To our knowledge, all compounds were isolated from this plant for the first time. Compounds 2–16 were reported for the first time from the genus Psychotria. The chemotaxonomic significances of these compounds were summarized. •Phytochemical study on Psychotria yunnanensis was performed for the first time.•Compounds 2–16 were reported for the first time from the genus Psychotria L.•No alkaloids were detected from P. yunnanensis.•The chemotaxonomic importance of these compounds was summarized.