Two New Aristolochic Acid Derivatives from the Roots of Aristolochia fangchi and Their Cytotoxicities

Phytochemical investigation of 90% ethanol extracts of the roots of Aristolochia fangchi yielded two new aristolochic acid derivatives named Aristolochic Acid F and Aristolochic Acid C., together with three known compounds. Their structures were elucidated by spectral analysis. The cytotoxicity of the isolated compounds was also determined.