Terpenoids from Acamptopappus sphaerocephalus and A. shockleyi

Shivanand D. Jolad, Joseph J. Hoffmann, Barbara N. Timmermann, Steven P. McLaughlin, Robert B. Bates, Fernando A. Camou, Jack R. Cole

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Eight new labdane diterpenoids were isolated from the sodium carbonate-soluble acid fraction of Acamptopappus sphaerocephalus and their structures were deduced from the spectral properties of their methyl esters and other derivatives. They are 7,E-13- or 8,E-13-labdadienes having oxygen-containing substituents at C-2, C-7, C-15 and/or C-19. These same diterpenoids were also present in A. shockleyi. Eight previously reported sesquiterpenoids, namely, bisabolene-1,4-endoperoxide, caryophyllene oxide, β-eudesmol, trans-nerolidol, 1-oxobisabolene, shiromool, spathulenol and viridiflorol, were isolated from the non-polar fraction of A. sphaerocephalus and identified by their 1H NMR spectra.

Original languageEnglish (US)
Pages (from-to)3197-3204
Number of pages8
Issue number10
StatePublished - 1988


  • A. shockleyi
  • Acamptopappus sphaerocephalus
  • Asteraceae
  • Astereae
  • Solidagininae
  • labdane diterpenoids
  • sesquiterpenoids.

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Plant Science
  • Horticulture


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