
%0 Journal Article
%A Wazeer, MIM 
%A Kumar, V 
%A Weeratunga, G 
%A Wijeratna, DBT 
%T Carbon-13 N.M.R. lanthanide-induced shift study of some D:A-friedooleananes
%J Australian Journal of Chemistry
%D 1984/12/01
%V 37
%N 12
%P 2571-2575
%K 
%R https://doi.org/10.1071/CH9842571
%U https://www.publish.csiro.au/paper/CH9842571 
%X Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3)D:a-friedooleanan-30-ol (4, D:A-friedooleanan-21&#945;-ol (5) and 21&#945;- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes. 
