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Abstract
A new sulfur-containing spiroketal glycoside, breynin I (1), and a new terpenic glycoside, breyniaionoside E (2), together with 10 known compounds, were isolated from the aerial parts of Breynia vitis-idaea (Euphorbiaceae), a traditional Chinese medicine used for the treatment of chronic bronchitis and wounds. Their structures were elucidated on the basis of spectroscopic analysis and modified Mosher's method.
Acknowledgements
This work was financially supported by the National Science and Technology Major Project ‘Key New Drug Creation and Manufacturing Program’, China (No. 2009ZX09301-001) and Key Project of Chinese Academy of Sciences (No. KSCX2-YW-R-184). The authors wish to thank Professors Ying Zhou and Ding Fang of Guangxi Institute of Traditional Chinese Medicine for providing and identification of the plant material.