4Peng WJ, Tang PP, Hu XY,et al. Synthesis of the A,B-ring-truncated OSW saponin analogs and their antitumor activities [ J ] . Bioorganic & Medicinal Chemistry Letters,2007, 17 (20) :5506.
5Kukhetpitakwong R, Hahnvajanawong C, Homchampa P,etal. Immunological adjuvant activities of saponin extracts from the pods of Acacia concinna[ J ] . International Immunopharmacology , 2006,6 ( 11 ) : 1729.
6Yeskaliyeva B, Mesaik A, Abbaskhan A,etal. Bioactive flavonoids and saponins from Climacoptera obtusifolia [ J]. Phytochemistry, 2006, 67 (21) :2392.
7Hillen, F. , Griffioen, A. W. , 2007. Tumour vascularization: sprouting angiogenesis and beyond [ J ] . Cancer Metastasis Rev. 26, 489- 502.
8Hui Hua, Lei Feng, Xiao-ping Zhang, Lian-fen Zhang, Jian Jin. Anti- angiogenic activity of julibrosid[J], a natural product isolated from A1bizia julibrissin[ J] . Phytomedicine,2009,16 : 703.
9Quansheng Zhou, William B. Kiosses, Jin Liu, etal. Tumor endothelial cell_ tube formation model for determining anti-angiogenic activity of a tRNA synthetase cytokine [ J]. 2008 ,44 : 190.
10Folkman J. Angiogenesis in cancer, rheumatoid and disease. Nat Med. 1995,1:27.