Title
Biflavanones with anti-proliferative activity against eight human solid tumor cell lines from Stellera chamaejasme
Author
Jie Li, Jiao-Jiao Zhang, Xiao-Xiao Pang, Xi-Lei Zheng Chen, Li-She Gan
Year
2014
Journal
Fitoterapia
Abstract
Six 3,3″-biflavanones, including a new compound isochamaejasmenin C (1), were isolated from EtOH extracts of the roots of Stellera chamaejasme L. Their structures were elucidated on the basis of spectroscopic methods, including HR-ESI-MS and 2D NMR techniques. The absolute configurations on 2, 3, 3″, and 2″ of compounds 1, 3, and6, which represent three geometry types of these compounds, were determined by TDDFT quantum chemical calculations of their ECD spectra. All compounds were evaluated for their cytotoxicities against eight human solid tumor cell lines and compounds 2, 4, and 6 showed strong anti-proliferative effects against all these cell lines with IC50 values ranging from 1.08 to 15.97 μM, which were in the same range as the positive control paclitaxel.
Instrument
J-815
Keywords
Circular dichroism, Absolute configuration, Medicinal