Secondary metabolites from the arial parts of Hyssopus cuspidatus Boriss. and their chemotaxonomic significance

A phytochemical investigation of aerial parts of Hyssopus cuspidatus Boriss. led to the isolation of twenty compounds 1–20, including terpenoids (1−11), jasmonates (12 and 13), phenylpropanoids (14−16), and phenols (17−20). Compound 12 was determined as a new natural occurring, which was initially reported as a synthetic product. The structures of these structures were identified based on extensive spectroscopic methods as well as comparison with literature data. Compounds 10–12 were firstly acquired from the Lamiaceae family. Compounds 1, 3, 5–8, 13, 17, 19, and 20 were isolated from H. cuspidatus for the first time and also newly identified within the genus Hyssopus. The chemotaxonomic significance of these isolated compounds was also described.