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Abstract
A new triterpene glycoside, rollentoside A, has been isolated from Asterias rollentoni Bell and identified as 3β-O-{3-O-methyl-β-d-xylopyranosyl-(1 → 3)-O-β-d-glucopyranosyl-(1 → 4)-O-β-d-quinopyranosyl-(1 → 2)-O-β-d-xylopyranosyl}-16-β-acetoxy-23S-acetoxy-holost-7-ene (1), together with a new natural product, rollentoside B (2). The structures of compounds 1 and 2 were elucidated by extensive 1D and 2D NMR investigation (1H–1H COSY, TOCSY, HSQC, HMBC, NOESY).
Acknowledgements
This work was supported by the 863 Hi-Tech Research and Development Program of China (No. 2001AA624020) and the Fund for the 973 project from the Ministry of Science and Technology (No. G1998051100), China. Thanks to Dr Sujuan Wang of the Institute of Materia Medica, Chinese Academy of Medical Sciences, for assistance with the HR-FAB mass spectra.
