
TY  - JOUR
A1  - Khong, PW 
A1  - Lewis, KG 
T1  - Acetyl migration in Urs-12-ene-3&#945;,24-diol
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1975
VL  - 28
IS  - 1
SP  - 201
EP  - 206
KW  - 
UR  - https://doi.org/10.1071/CH9750201 
N2  - 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. 
ER  -

