A New Phenanthrene Derivative from Pleione praecox

A new phenanthrene, 2,6-dihydroxy-5,8-dimethoxyphenanthrene (1), was isolated from Pleione praecox. The structure of the new compound was determined on the basis of NMR (1D and 2D) and HR-ESI-MS data. The new compound was also evaluated for its α-glucosidase inhibitory activity. Compared with the positive control acarbose, the new compound exhibited appreciable effect.