7Li JH,He CW,Liang NC,et al.Effects of antitumor compounds isolated from Pteris semipinnata L.on DNA and cell cycle of HL-60 cells.Acta Pharmacol Sin,1999,20(6):541-545
8Murakami T,Tanaka N.Occurrence,structure and taxonomic implications of ferm constituents.New York:Wien.Springer-Verlag,1988:285