
%0 Journal Article
%A Culvenor, CCJ 
%A Smith, LW 
%T The alkaloids of <I>Cynoglossum australe</I> R.Br. and <I>C. amabile</I> Stapf &#38; Drummond
%J Australian Journal of Chemistry
%D 1967/11/01
%V 20
%N 11
%P 2499-2503
%K 
%R https://doi.org/10.1071/CH9672499
%U https://www.publish.csiro.au/paper/CH9672499 
%X Two new pyrrolizidine alkaloids, cynaustraline and cynaustine, have been isolated from Cynoglossum australe R,.Br., and echinatine and a third new alkaloid, amabiline, from C. amabile Stapf &amp; Drummond. Cynaustraline, cynaustine, and amabiline are, respectively, (+)- isoretronecanol, (+)-supinidine, and (-)-supinidine esters of viridifloric acid. This is the first isolation of an ester of a (+)- enantiomer of an allylic amino alcohol. 
