A New Phenanthraquinone from the Aerial Parts of Cremastra appendiculata

A new phenanthraquinone, 2,6-dihydroxy-8-methoxy-1,4-phenanthraquinone (1), was isolated from the aerial parts of Cremastra appendiculata. The structure of the new compound was determined on the basis of NMR (1D and 2D) and mass spectroscopic analysis.