A new dicoumarinoid glycoside from Daphne giraldii

Abstract

A new dicoumarinoid glycoside, named giraldoid A (1), has been isolated from Daphne giraldii Nitsche. The structure of 1 was determined as 7-O-β-glucosyl-8-(7-hydroxy-2H-1-benzopyran-2-one-8-)yl-2H-1-benzopyran-2-one on the basis of chemical reactions and spectroscopic methods.

Keywords:

• Daphne giraldii Nitsche
• Thymelaeaceae
• Giraldoid A
• 7-O-β-Glucoside-8-(7-hydroxy-2H-1-benzopyran-2-one-8-)yl-2H-1-benzopyran-2-one

Acknowledgements

This work was supported by the Shanhaiguan Pharmaceutical Factory. We are also grateful to Ms Wen Li and Mr Yi Sha, Department of Instrumental Analysis of our University, for the NMR measurements.