
%0 Journal Article
%A Begum, S 
%A Adil, Q 
%A Siddiqui, BS 
%A Siddiqui, S 
%T Synthesis of 2&#946;-Hydroxyursolic Acid and Other Ursane Analogs From Ursonic Acid
%J Australian Journal of Chemistry
%D 1993/07/01
%V 46
%N 7
%P 1067-1071
%K 
%R https://doi.org/10.1071/CH9931067
%U https://www.publish.csiro.au/paper/CH9931067 
%X Synthesis of the natural product 2&#946;-hydroxyursolic acid (6) has been achieved through reaction of ursonic acid (1) with SeO2, and subsequent stereospecific reduction of the 2,3-diketo derivative (3) and its tautomer  diosphenol (4), with NaBH4 under mild reaction conditions. Several other analogues (2), (5), (7) and (8) of the ursane series have also been obtained during these reactions. 
