
%0 Journal Article
%A Crow, WD 
%T The Alkaloids of <I>Lupinus varius</I> L. III. The Structure of Base LV-1
%J Australian Journal of Chemistry
%D 1959/09/01
%V 12
%N 3
%P 474-482
%K 
%R https://doi.org/10.1071/CH9590474
%U https://www.publish.csiro.au/paper/CH9590474 
%X Base LV-1 (C15H220N2), isolated from the seeds and tops of Lupinus varius L., is converted by catalytic hydrogenation to (-)-sparteine. Partial reduction yields a ketonic base C15H240N2, shown to be 4-oxosparteine, and a study of the physical properties of base LV-1 leads to the alternative structures, &#916;2- and &#916;5-dehydro-4-oxosparteine.   Decision between these alternatives is reached by examination of the nuclear magnetic resonance spectrum, which shows the presence of two vinyl hydrogen atoms, that is, base LV-1 is (-)-&#916;2-dehydro-4-oxosparteine. Base LV-1 has been shown to be identical with multiflorine, isolated by Comin and Deulofeu (1959) from L. multiflorus Lam. 
