Journal ArticleDOI
Rupicolin-A and -B, rupin-A and -B, and cumambrin-B oxide from Artemisia tripartita ssp. Rupicola
M.A. Irwin,T.A. Geissman +1 more
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TLDR
In this paper, five sesquiterpene Iactones have been isolated from Artemisia tripartita Rydb. ssp. rupicola Beetle.About:
This article is published in Phytochemistry.The article was published on 1973-04-01. It has received 44 citations till now. The article focuses on the topics: Rupicola & Artemisia tripartita.read more
Citations
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Sesquiterpene lactones as taxonomic characters in the asteraceae
TL;DR: The tribal, subtribal and generic distribution of sesquiterpene lactones is examined, the compounds’ utility as taxonomic characters discussed and the biogenetically based methodology shows the efficacy of this analytical methodology.
Journal ArticleDOI
In vitro antimicrobial activity of extracts of four Achillea species: the composition of Achillea clavennae L. (Asteraceae) extract.
TL;DR: This study confirms the ethnopharmacological use of plants from this genus and places Achillea clavennae L. on the same level as the recognized AchilleA millefolium.
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Sesquiterpene lactones and systematics of the genus Artemisia
Rick G. Kelsey,Fred Shafizadeh +1 more
TL;DR: The chemical data in conjunction with geographic distributions suggest that the subgenus Seriphidium is polyphyletic and that the section Tridentatae originated from Abrotanum, and the Tridentate should be recognized as a sub genus separate and distinct from the Old World Seriphium.
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Sesquiterpene lactones and other constituents from Schistostephium species
TL;DR: In this article, Schistostephium species were used to identify 43 new compounds, including isocomene, bisabolene, eudesmane and nerolidol derivatives, and a prostaglandin-like acid.
Journal ArticleDOI
Sesquiterpene lactones and other constituents from Eriocephalus species
TL;DR: In this paper, the Eriocephalus species were investigated by high-field NMR spectroscopy and a few chemical transformations and the structures were elucidated by high field NMR.
References
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Journal ArticleDOI
Circular dichroism and optical rotatory dispersion of sesquiterpene lactones
TL;DR: In this paper, the CD curves of a large number of sesquiterpene lactones together with a limited number of ORD curves have been measured and a simple correlation between the sign of the Cotton effect (CE) and the stereochemistry of the α-methylene-γ-lactone chromophore can be deduced from the resulting data.
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The geminal coupling and paramagnetic shift of exomethylene protons in the α,β′-unsaturated γ-lactone group of sesquiterpene lactones containing C8-α-hydroxyl groups
TL;DR: In this article, it was shown that the van der Waal's proximity effect of the C8-α-hydroxyl group on sesquiterpene lactones can be used for making certain stereochemical and conformational assignments.
Journal ArticleDOI
Sesquiterpene lactones. Constituents of Artemisia nova nels. and A. tripartita gray ssp. rupicola
M.A. Irwin,T.A. Geissman +1 more
TL;DR: The gross structure assigned to cumambrin B has been confirmed and its stereochemistry completely defined.
Journal ArticleDOI
Sesquiterpenoid lactones of Artemisia. Constituents of Artemisia cana ssp. Cana. the structure of Canin
TL;DR: Five sesquiterpenoid lactones have been isolated from Artemisia cana Pursh, and the structure of canin, a new guaianolide, has been shown to be IV on the basis of chemical transformations and spectral evidence.
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Sesquiterpene lactones of artemisia species. New lactones from A. arbuscula ssp. arbuscula and A. tripartita ssp. rupicola
M.A. Irwin,T.A. Geissman +1 more
TL;DR: Four lactones have been isolated from Artemisia arbuscula Nutt and appear to represent early stages near the origin of the biosynthetic pathway of formation of compounds of this class.
Related Papers (5)
Sesquiterpene lactones. Constituents of Artemisia nova nels. and A. tripartita gray ssp. rupicola
M.A. Irwin,T.A. Geissman +1 more