
TY  - JOUR
A1  - Eade, RA 
A1  - Simes, JJH 
A1  - Stevenson, B 
T1  - Extractives of Australian Timbers. IV. Castanogenin (Medicagenic Acid) and Bayogenin, C<sub>30</sub>H<sub>48</sub>O<sub>5</sub>, from <I>Castanospermum australe</I> Cunn. et Fras
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1963
VL  - 16
IS  - 5
SP  - 900
EP  - 905
KW  - 
UR  - https://doi.org/10.1071/CH9630900 
N2  - Castanogenin, the major genin produced on hydrolysis of the saponin of Castanospermum australe Cunn, et Fras. is shown to be identical with medicagenic acid (2&#946;,3&#946;-dihydroxyolean-12-en-23,28-dioic acid). Further proof of several of the structural features of medicagenic acid is given. The minor sapogenin, bayogenin, C30H48O5, is shown to be 2&#946;,3&#946;,23-trihydroxyolean-12-en-28-oic acid by conversion into the same tetrol as is formed from medicagenic acid and by the formation of a &#947;-lactone by interaction of the carboxyl function and the 12,13-double bond. 
ER  -

