References
- Zhang , Z.X. and Zhou , J. 1983 . Acta Chim. Sin. , 41 : 1058
- Zhang , Y.H. , Wen , Y.Y. and Kuang , T.T. 2000 . Nat. Prod. Res. Dev. , 12 : 83
- Tsutomu , W. and Tadakata , N. 1995 . Chem. Pharm. Bull. , 43 : 977
- Ma , X.X. , Jiang , F.T. and Yang , Q.X. 2007 . Steroids , 72 : 778
- Tsukamoto , S. , Hayashi , K. and Mitsuhashi , H. 1985 . Tetrahedron , 5 : 927
- Zhao , Y.B. and Shen , Y.M. 2004 . Carbohydr. Res. , 339 : 1967