New Cell Growth‐Inhibitory Cyclohexadienone Derivatives from Hypericum calycinum L.

Laurent A. Decosterd, Helen Stoeckli‐Evans, Jean Chapuis, Bernard Sordat, Kurt Hostettmann

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The crude petroleum‐ether extract of the aerial parts of Hypericum calycinum L. (Guttiferae) exhibited in vitro growth‐inhibitory activity against the Co‐115 human colon carcinoma cell line. Bioassay‐guided fractionation of this extract allowed the isolation of the cyclohexadienone derivatives 1–5, four of which are previously undescribed compounds. The structures of the known chinesin II (1) and of 2 (hypercalin A) were established by 1H‐ and 13C‐NMR spectroscopy and were confirmed by X‐ray analysis of their crystalline mixture which revealed the complete relative configuration of both compounds. The structure of 3 (hypercalin B) was elucidated by means of extensive 1D‐ and 2D‐NMR experiments, including DQ‐COSY, HETCOR and LR‐HETCOR. The structure of compound 4 (hypercalin C) was established by 1H‐ and 13C‐NMR spectroscopy and confirmed by X‐ray analysis to be the 3,5‐dihydroxy‐4‐{[(1R*,2S*, 5S*)‐2‐hydroxy‐2‐methyl‐5‐(1‐methylethenyl)cyclopentyl]methyl}‐6,6‐bis‐(3‐methylbut‐2‐enyl)‐2‐(2‐methylpropanoyl)cyclohexa‐2,4‐dien‐1‐one. The structures of the higher isomeric homologues 5a/5b were deduced by comparison of their UV, 1H‐, and 13C‐NMR spectra with those of 4. The isolated compounds appeared to be related to chinesin I and II previously isolated from Hypericum chinense L. and were responsible for the growth‐inhibitory activity of the extract against the Co‐115 human carcinoma cell line. Moreover, 1/2 and 3 showed molluscicidal activity against the schistosomiasis‐transmitting snail Biomphalaria glabrata.

Original languageEnglish (US)
Pages (from-to)1833-1845
Number of pages13
JournalHelvetica Chimica Acta
Volume72
Issue number8
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

Fingerprint

Hypericum
Spectrum Analysis
Cells
X-Rays
Spectroscopy
Biomphalaria
Derivatives
Carcinoma
cultured cells
Cell Line
Snails
Fractionation
cancer
cells
Complex Mixtures
snails
Colon
Antennas
Crystalline materials
fractionation

ASJC Scopus subject areas

  • Catalysis
  • Biochemistry
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

New Cell Growth‐Inhibitory Cyclohexadienone Derivatives from Hypericum calycinum L. / Decosterd, Laurent A.; Stoeckli‐Evans, Helen; Chapuis, Jean; Sordat, Bernard; Hostettmann, Kurt.

In: Helvetica Chimica Acta, Vol. 72, No. 8, 01.01.1989, p. 1833-1845.

Research output: Contribution to journalArticle

Decosterd, LA, Stoeckli‐Evans, H, Chapuis, J, Sordat, B & Hostettmann, K 1989, 'New Cell Growth‐Inhibitory Cyclohexadienone Derivatives from Hypericum calycinum L.', Helvetica Chimica Acta, vol. 72, no. 8, pp. 1833-1845. https://doi.org/10.1002/hlca.19890720820
Decosterd, Laurent A. ; Stoeckli‐Evans, Helen ; Chapuis, Jean ; Sordat, Bernard ; Hostettmann, Kurt. / New Cell Growth‐Inhibitory Cyclohexadienone Derivatives from Hypericum calycinum L. In: Helvetica Chimica Acta. 1989 ; Vol. 72, No. 8. pp. 1833-1845.
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