LAUSR

Abstract Two new compounds were extracted and separated from the whole plant of Aleuritopteris argentea . The structures and absolute configurations of two compounds were characterized by UV, FT-IR, NMR, MS, and single-crystal X-ray diffraction. Compound 1 was determined to be 2, 17-diol (2β, 4α)-15,16-ene-beyerane diterpenoid and compound 2 to be 2,18-diol (2β, 4α)-16-ene-ent-kaurane diterpenoid, named aleuritopsis A and aleuritopsis B respectively. The cytotoxicity of two compounds against MCF-7 and SKOV3 cells were tested using the MTT method, as the results, both exhibited obvious inhibitory effect to the tumor cells.