Plant Diversity ›› 1984, Vol. 6 ›› Issue (03): 1-3.

• Articles •    


Zheng Xinrong, Gao Zenyi,Sun Handong and Lin Zhongwen   

  1. Henan Institute of Biology, Academy of Henan Province;Kunming Institute of Botany, Academia sinica
  • Online:1984-06-25 Published:1984-06-25

Abstract: Ludongnin, a new spirosecokaurene diterpenoid was isolated from Rabdosia rubescens (Hemsl.) Hara colleeted in Lushi, Henan. The structure was estab- lished from its spectral and chemical evidence. It is the first instance of an ent- kaurene type diterpenoid possessing a γ-lactonic ring in between C6-C19, while all the other known type diterpenoids isolated from Rabdosia species are not γ-lactonic ring in between C6--C19.

Key words: structure, ludongnin