Highly oxygenated sesquiterpenes from the subtribe nassauviinae

Abstract

The aerial parts of Oxyphyllum ulicinum afforded, in addition to known compounds, 15 new germacrane derivatives with a 1β, 10α-epoxide, a carboxyl group at C-4, and different ester groups at C-9 and C-14. From the aerial parts of Polyachyrus fuscus, five highly oxygenated eudesmanes and a nerolidol glycoside were isolated. The structures were elucidated by high field NMR techniques. © 1988.