
TY  - JOUR
A1  - Hensens, OD 
A1  - Khong, PW 
A1  - Lewis, KG 
T1  - The formation of O,O-isopropylidene derivatives from 16-hydroxyoleanenes
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 7
SP  - 1549
EP  - 1559
KW  - 
UR  - https://doi.org/10.1071/CH9761549 
N2  - Re-examination of the reactions of primulagenin A, longispinogenin and chichipegenin with acetone has shown that isopropylidene derivatives may be obtained in all cases. With chichipegenin two of the three possible isomeric isopropylidene derivatives were isolated. The effect of alteration of the conformation of ring v by the introduction of a &#916;13(18) double bond on the ease of formation of the 1,3-dioxan ring has been examined in the case of the 3&#946;,16&#945;,28-triol system. 
ER  -

