Abstract
Two new flavan glycosides, (2S)-5,7,4′-trihydroxyflavan-7-O-β-d-glucopyranoside (1) and (2S)-5,7,4′-trihydroxyflavan-5-O-β-d-glucopyranoside (2), and a new neolignan, (7S,8S)-3-methoxyl-3′-O-β-d-glucopyrannosyl-4′:8,5′:7-diepoxyneolignan-4,9′-diol (3), were isolated from the leaves of Liquidambar formosana Hance. Their structures were elucidated on the basis of spectroscopic data and chemical evidence.
Acknowledgments
We thank Prof. A.H. Liu at Center of Analysis and Testing Nanchang University for NMR measurements.