Two new flavonol glycosides from the leaves of Cleome chelidonii L.f.

Abstract

From the leaves of Cleome chelidonii L.f., two new flavonol glycosides, named cleomesides A (1) and B (2), and four known compounds, quercetin 3-O-β-glucopyranosyl(1 → 2)-α-rhamnoside-7-O-α-rhamnoside (3), ethyl α-galactopyranoside (4), adenine (5) and glycerol monostearate (6), were isolated. The structures of all isolated compounds (1–6) were determined by NMR spectroscopy and mass spectrometry. The data of known compounds (3–6) were further compared with the reported data for these compounds.

Keywords::

• flavonol glycosides
• Cleome chelidonii
• cleomeside A
• cleomeside B

Acknowledgements

The authors are grateful to Prof. Vo Van Chi for the plant identification.