Cyathocaline, an azafluorenone alkaloid from cyathocalyx zeylanica

E. M. Kithsiri Wijeratne, Leslie B. De Silva, Tohru Kikuchi, Yasuhiro Tezuka, A. A. Leslie Gunatilaka, David G.I. Kingston

Research output: Contribution to journalArticle

22 Scopus citations


Bioactivity-guided fractionation of a MeOH extract of the stem bark of Cyathocalyx zeylanica afforded a moderately bioactive new azafluorenone alkaloid, cyathocaline, the structure of which was established as 5,7-dihydroxy-6-methoxy-1-methyl-4-azafluoren-9-one [1] with the aid of spectroscopic data.

Original languageEnglish (US)
Pages (from-to)459-462
Number of pages4
JournalJournal Of Natural Products
Issue number3
StatePublished - Mar 1995


ASJC Scopus subject areas

  • Analytical Chemistry
  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine
  • Organic Chemistry

Cite this

Kithsiri Wijeratne, E. M., De Silva, L. B., Kikuchi, T., Tezuka, Y., Leslie Gunatilaka, A. A., & Kingston, D. G. I. (1995). Cyathocaline, an azafluorenone alkaloid from cyathocalyx zeylanica. Journal Of Natural Products, 58(3), 459-462.