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Journal ArticleDOI

Polyacetylenverbindungen, 205. Über die Inhaltsstoffe der Tribus Arctotideae

Ferdinand Bohlmann, +1 more
- 01 Apr 1972 - 
- Vol. 105, Iss: 4, pp 1245-1257
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TLDR
In this paper, a number of new thiophenacetylenic compounds have been isolated for which the structures 6, 8-13, 15-17, 19-22 are proposed.
Abstract
Bei der Untersuchung zahlreicher Arten der sudafrikanischen Tribus Arctotideae wurden aus verschiedenen Arten der Gattung Berkheya mehrere neue Thiophenacetylenverbindungen isoliert und fur diese die Strukturen 6, 8–13, 15–17, 19–22 vorgeschlagen. Mogliche neue biogenetische Gesichtspunkte werden diskutiert. Weiterhin werden gewisse chemotaxonomische Aspekte aufgezeigt. Polyacetylenic Compounds, 205. On the Constituents of the Tribe Arctotideae By investigation of numerous species of the Southafrican tribe Arctotideae from different species of the genus Berkheya several new thiophene-acetylenic compounds have been isolated for which the structures 6, 8–13, 15–17, 19–22 are proposed. Possible new biogenetic viewpoints are discussed. Furtheron some chemotaxonomical aspects are pointed out.

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Citations
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Palladium-catalyzed syntheses of naturally-occurring acetylenic thiophens and related compounds☆

TL;DR: In this paper, a palladium-catalyzed cross-coupling of vinyl bromide with the Grignard reagents derived from 5-ethynyl-2,2'-bithienyl (6a) and 2-phenyl-5-(3-buten-l-ynyl) thiophen (1b) has been synthesized using two different methods.
Journal ArticleDOI

Acetylenes and related compounds in astereae

TL;DR: On the basis of their distribution in Cynareae, the chemotaxonomy of this tribe is discussed and the biosynthesis and biological activities of some of the isolated compounds are evaluated.
Journal ArticleDOI

Polyacetylene Compounds of Plants of the Asteraceae Family (Review)

TL;DR: A review of polyacetylenes of the Asteraceae family can be found in this article, where the authors provide a comprehensive overview of the chemical properties of these compounds and their properties in the Russian scientific literature.
Journal ArticleDOI

Natürlich vorkommende Terpen‐Derivate, 108. Über ein anomales Sesquiterpen aus Berkheya radula (Harv.) De Willd

TL;DR: De Willd et al. as mentioned in this paper proposed a new sesquiterpene hydrocarbon, berkheyaradulene, with an anomal carbon skeleton, which was elucidated by spectroscopic methods and by transformation into the alcohol 14.
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An improved procedure for the synthesis of substituted acetylenes from the reaction of acetylene gas with aryl iodides under palladium–copper catalysis

TL;DR: Dimethylformamide facilitated the palladium-copper catalysed reaction of acetylene gas with aryl iodides in a closed system to give disubstituted acetylenes in fair to excellent yields.
References
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Journal ArticleDOI

Polyacetylenverbindungen, LXIX. Die Acetylenverbindungen der Gattung Echinops L

TL;DR: The Untersuchung mehrerer Vertreter der Gattung Echinops L. ergibt 14 neue Thiophenacetylenverbindungen as mentioned in this paper.
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Polyacetylenverbindungen, LXII. Über natürlich vorkommende Thiophenacetylenverbindungen

TL;DR: In this article, the Untersuchung einer groseren Zahl der verschiedensten Vertreter aus der Familie Compositae ergibt neun neue Thiophenderivate, deren Strukturen enge biogenetische Beziehungen zu bereits bekannten Polyinen erkennen lassen.
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Polyacetylenverbindungen, XLIII. Über die Inhaltsstoffe von Tagetes‐Arten

TL;DR: The Formel II fur eine aus Tagetes erectus L. isolierte Verbindung wird durch Synthese endgultig sichergestellt as discussed by the authors.
Journal ArticleDOI

Polyacetylenverbindungen, CXXXIV. Über neue Thiophenacetylenverbindungen

TL;DR: Aus verschiedenen Vertretern des Tribus Heliantheae werden einige neue Thiophenderivate isoliert und in ihren Strukturen aufgeklart.