Plant Diversity ›› 1982, Vol. 4 ›› Issue (04): 1-3.

• Articles •    

NEW DITERPENOID CONSTITUENTS OF RABDO8IA ERI0CALYX

Wang Zongyu and Xu Yunlong   

  1. Kunmming Institute of Botany,Academia sinica
  • Online:1982-08-25 Published:1982-08-25

Abstract: Four componts, criocalyxin A, B, C Dnd D, were isolated from the ether extract of the leaves of Rabdosia eriocalyx (Dunn) Hara collected in Yunnan. Two of them, namely (I ) and (II), were estrtblished as new diterpenoids having a spirosecokaurene and an entkaurene-skeleton by means of spectroscopic and chemical methods, respectively.Eriocalyrxin B possesses in vivo tumor-inhibitory activity.

Key words: new diterpenoid, constituents, eriocalyx