
TY  - JOUR
A1  - Courtney, JL 
A1  - Stern, W 
T1  - Triterpenes of the friedelane series. VI. The structure of Friedelan-y-al
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1966
VL  - 19
IS  - 9
SP  - 1709
EP  - 1715
KW  - 
UR  - https://doi.org/10.1071/CH9661709 
N2  - The preparation of a number of compounds of the friedelane series having an oxygen function at C 24 is described. Mass spectrometric considerations indicate that friedelan-y-al is either friedelan-24-al or friedelan-25-al. A comparison shows that the C 24 derivatives are not identical with the natural products. The natural product must therefore have an oxygen function at C 25. Positive chemical proof of this assignment has been obtained by conversion of friedelane-3,x-dion- 25-oic acid into 5&#946;-hydroxyalnusane-3,x-dion-25-oic acid 5(25)-lactone. 
ER  -

