Chemical constituents of Pyrrosia petiolosa

Abstract

The new flavone diglycoside 7-O-[6-O-(α-L-arabifuranosyl)-β-D-glucopyranosyl]-gossypetin, named as pyrropetioside, along with 13 known compounds (including 3 artifacts) have been isolated from Pyrrosia petiolosa. Their structures have been elucidated by means of chemical and spectroscopic methods including IR, MS, 1D and 2D NMR techniques.

Keywords:

• Flavone diglycoside
• Pyrropetioside A
• Chromatography

Acknowledgements

The authors are grateful to Professor Ablez Zeper, Institute of Materia Medica, Chinese Academy of Medical Sciences, for mass spectra measurements, and for financial support from the Ministry of Sciences and Technology of China (Grant No. 99-929-01-26).