Abstract
A new 1,4-phenanthraquinone was isolated from the roots of Menispermum dauricum. The structure was elucidated as 7-hydroxy-3,6-dimethoxy-1,4-phenanthraquinone on the basis of spectral evidence.
Acknowledgments
The authors thank Dr. Min-Jian Qin (China Pharmaceutical University) for collecting and authenticating the plant material.