The Coumarin Glycosides of Daphne acuminata: Use of ¹³C–NMR Spectroscopy for their Identification

Abstract

Two coumarin glycosides previously isolated from Daphne acuminata Royle have been shown to be daphnin and daphnetin–8–β–glucoside. The value of ¹³C–NMR spcectroscopy for the identification of coumarin glycosides is demonstrated. Its use in characterising the glycosidic moiety and confirming the 7, 8– coumarin substitution pattern of daphnetin–8–β–glucoside, a previously reported constituent of D. acuminata, is shown.

Key Word Index

Daphne acuminata - Coumarin Glycosides - Daphnin - Daphnetin–8–β–glucoside