Natural acetylenes. Part XLIX. Polyacetylenes from Dahlia scapigera (A. Dietr.) link and otto var. scapigera f. scapigera and some Dahlia hybrids

Colin T. Bedford, Dipali Bhattacharjee, Jeremy R.F. Fairbrother, Ewart R.H. Jones, Steve Safe, Viktor Thaller

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Examination of the above Dahlia species revealed the presence of 8 polyacetylenic compounds of which the C16 ene-diyn-ene alcohol (XXXII) and its acetate were new. In representatives of the main garden varieties 36 poly-MeCH=tCH·[C≡C]2·CH= tCH·CH(OH)·CH(OH)·CH=CH2 (XVIII) MeCH=tCH·[C≡C]2·[CH= ttCH]2·CH(OH)·CH2·CH 2OH (XXVIII) MeCH=tCH·[C≡C] 2·[CH=ttCH]2·[CH 2]4·CH2-OH (XXXII) Me[C≡C] 3·[CH=CH]2·CH(OH)·[CH 2]3·CH=CH2 (XXXVI) acetylenes were detected, including the new (XVIII), (XXVIII), and (XXXVI) and their acetates. Seasonal variations of the content were noted. The C17 alcohol (XXXVI) and the C16 alcohol (XXXII) were synthesised; the latter and the corresponding C14 compound by novel routes.

Original languageEnglish (US)
Pages (from-to)735-741
Number of pages7
JournalJournal of the Chemical Society, Perkin Transactions 1
Issue number7
DOIs
StatePublished - 1976

ASJC Scopus subject areas

  • Chemistry(all)

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