
TY  - JOUR
A1  - Ahmad, MS 
A1  - Sharma, RP 
A1  - Siddiqui, H 
A1  - Shafiullah, 
T1  - Further observations concerning steroidal, &#946;-lactones. Boron trifluoride catalysed rearrangements of &#946;-lactones in the cholestane series
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1968
VL  - 21
IS  - 7
SP  - 1867
EP  - 1872
KW  - 
UR  - https://doi.org/10.1071/CH9681867 
N2  - B-Nor-5&#946;-cholestane-3,3,5-diol-6-carboxylic acid 5,6-lactone 3-acetate on treatment with BF3 etherate in ether or ether-acetic anhydride gave B-norcholest-5-en-3&#946;-ol-6-carboxylic acid 3-acetate and 19-nor-5-methyl-B-nor-5&#946;-cholest-9(10)-en-3,3-ol-6-carboxylic acid 3-acetate, a product of the Westphalen rearrangement. B-Nor-5&#946;-cholestan-5-ol-6-carboxylic acid 5,6-lactone under similar reaction conditions provided the product of the Westphalen rearrangement, 19-nor-5-methyl-B-nor-5&#946;-cholest-9(10)-ene-6-carboxylic acid. 
ER  -

