
%0 Journal Article
%A Capon, RJ 
%A Ghisalberti, EL 
%A Jefferies, PR 
%T Synthesis of deuterated <I>ent</I>-beyeranes. Stereospecific reduction of a 4-axial aldehyde
%J Australian Journal of Chemistry
%D 1982/03/01
%V 35
%N 3
%P 613-620
%K 
%R https://doi.org/10.1071/CH9820613
%U https://www.publish.csiro.au/paper/CH9820613 
%X Reduction of the 4a-axial aldehyde group in ent-3,19-dioxobeyer-15-en-17-oic acid (1) by sodium borohydride is shown to occur by attack on the Si-face of the carbonyl group. The synthesis of some ent-beyerane derivatives stereospecifically labelled with deuterium at C19 is described. 
