Studies on diterpenes from genus Sideritis. XIII. Two new stachene derivatives from Sideritis angustifolia (Labiatae)

Abstract

Two new stach-15-ene (beyer-15-ene) derivatives have been isolated from Sideritis angustifolia Lag. (Labiatae). Chemical and spectroscopic data, as well as the correlation with previously described products (stachene and stachen-17-ol), establish their structures. They are stach-15-ene-lα,l2β,17-trio1 (1) (jativatriol) and stach-15-ene-7β,12β,17-triol (30) (conchitriol).