Author:
Ahmad MS,Sharma RP,Siddiqui H,Shafiullah
Abstract
B-Nor-5β-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-3β-ol-6-carboxylic acid
3-acetate and 19-nor-5-methyl-B-nor-5β-cholest-9(10)-en-3,3-ol-6-carboxylic
acid 3-acetate, a product of the Westphalen rearrangement. B-Nor-5β-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-5β-cholest-9(10)-ene-6-carboxylic
acid.
Cited by
4 articles.
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