Abstract
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 language | English (US) |
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Pages (from-to) | 3197-3204 |
Number of pages | 8 |
Journal | Phytochemistry |
Volume | 27 |
Issue number | 10 |
DOIs | |
State | Published - 1988 |
Keywords
- A. shockleyi
- Acamptopappus sphaerocephalus
- Asteraceae
- Astereae
- Solidagininae
- labdane diterpenoids
- sesquiterpenoids.
ASJC Scopus subject areas
- Biochemistry
- Molecular Biology
- Plant Science
- Horticulture