Natural acetylenes. Part XXXVII. Polyacetylenes from the campanulaceae plant family. Tetrahydropyranyl and open chain C14 polyacetylenic alcohols from Campanula pyramidalis L. and Campanula medium L.

The new mono-ols RCH(OH)·[CC]2·CH[graphic omitted]CH·[graphic omitted] (R = Et or CHCH2) and the triols R[CC]2·CH[graphic omitted]CH·CH(OH)·[CH2]3·CH2·OH [R = EtCH(OH), CH2CH·CH(OH), or HO·CH2·CHCH] have been found in C. pyramidalis L. and C. medium L. (the Canterbury bell) and synthesised. A known mono-ol (III) and a known triol(VII) were also present.