| abstract |
Novel 11 beta -substituted- DELTA 9-ene-5 alpha -ols of the formula I wherein K is a blocked ketone in the form of a ketal, thio-ketal or methyloxime, X is a pentagonal or hexagonal ring optionally substituted, R1 is selected from the group consisting of branched and straight chain alkyl of 1 to 12 carbon atoms, unsaturated alkyl of 2 to 8 carbon atoms optionally substituted, optionally substituted aryl of 6 to 12 carbon atoms, optionally substituted aralkyl of 7 to 13 carbon atoms and heterocycle with at least one hetero oxygen or sulfur atom and R2 is alkyl of 1 to 4 carbon atoms which are useful intermediates and a process for their preparation. |