
%0 Journal Article
%A Khong, PW 
%A Lewis, KG 
%T Acetyl migration in Urs-12-ene-3&#945;,24-diol
%J Australian Journal of Chemistry
%D 1975/01/01
%V 28
%N 1
%P 201-206
%K 
%R https://doi.org/10.1071/CH9750201
%U https://www.publish.csiro.au/paper/CH9750201 
%X A previous tentative structural assignment of a monoacetate of urs-12- ene-3&#945;,24-diol as the 3-mono-ester has been shown to require revision. Authentic urs-12-ene-3&#945;,24-diol 3-monoacetate has been prepared as well as the 24-monoacetate and interconversion of the two monoacetates has been demonstrated. The possibility that this acetyl migration occurs through conversion of ring A to a boat form is supported by the ready isolation of a 3&#945;,24-O-isopropylidene derivative. 
