A New Steroid from Polygonum nodosum Pers

• Shang Zhen ZHENG ^1, ,
• Tong SHEN ^2, ,
• Xu Wei SHEN ^1, ,
• Zhong Jian JIA ^2,

• 1.

  College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070;

• 2.

  National Laboratory of Applied Organic Chemistry, Institute of Organic Chemistry, Lanzhou University, Lanzhou 730000

• Received Date: 16 May 2002
  
• Fund Project:

  The work was supported by the Northwest Normal Universily-Bring Forth new ldea Projccl of Science and Technology, P.R.China