New 2(3-->20)abeotaxane and 3,11-cyclotaxane from needles of Taxus cuspidata

Qing-Wen Shi1, Zuo-Ping Li, Ding Zhao

  • 1Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medicinal University, 336 Zhongshan East Road, 050017, Shijiazhuang, Hebei, Province, People's Republic of China. qing_wen@hotmail.com