Two new compounds from Ixeris sonchifolia

Abstract

Two new compounds, named as sonchifolactone E (1) and sonchifolinin B (2), have been isolated from the whole plant of Ixeris sonchifolia, along with one known compound, sonchifolatone A (3). Their structures and stereochemistry were determined by spectroscopic methods.

Keywords:

• Ixeris sonchifolia
• Compositae
• sonchifolatone E
• sonchifolinin B

Acknowledgements

The authors are very grateful to Professor Qishi Sun of Shenyang Pharmaceutical University for identifying the plant materials and Mr. Yi Sha, Analytical Centre of Shenyang Pharmaceutical University for some NMR measurements.