Amides of vegetable origin. Part XII. A new series of alka-2,4-dienoic tyramine-amides from Anacyclus pyrethrum D.C. (Compositae)

Abstract

Anacyclus pyrethrum D.C. (Compositae) contains N-(2′-p-hydroxyphenylethyl) deca-, dodeca-, and tetradeca-trans-2, trans-4-dienamide, a new series of tyramine amides corresponding to isobutylamides which this plant produces. The tyramides, and the corresponding isobutylamides, are synthesised stereospecifically by phosphonatenaion synthesis. Anacyclus pyrethrum is found to contain the lignan (+)-sesamin and attention is drawn to the cooccurrence of lipid (and other) amides with lignans in a number of plants from three families (Compositae, Piperaceae, and Rutaceae).