Abstract
A new isoflavone glycoside named as 8-O-methylrelusin-7-O-β-D-apifuranosyl-(1→2)-β-D-glucopyranoside (1), together with two known compounds, 8-O-methylrelusin-7-O-β-D-glucopyranoside (2) and isobiflorin (3), were isolated from Abrus cantoniensis. The structure of the new compound was elucidated on the basis of spectroscopic methods including extensive 1D NMR, 2D NMR, and HRESIMS. This is the first report of isoflavone from Abrus cantoniensis. Moreover, all isolated compounds were evaluated for their cytotoxicity against SMMC-7721 and MHCC97-H cell lines.
Acknowledgments
We thank Prof. Guo-Gen Liu (Modern Analysis and Testing Centre of Central South University) for NMR measurement and Dr. Hong-Ping Long (The first Hospital of Hunan University of Chinese Medicine) for HRESIMS measurement.
Disclosure statement
No potential conflicts of interest was reported by the authors.