Popis: |
The synthesis of trans-4-n-butyl-2,3-3H-cyclohexanecarboxylic acid is described. The title compound was synthesized by catalytic tritiation of 4-n-butylcyclohex-2-enecarboxylic acid, which was obtained from a “double” Birch reduction of 4-n-butylbenzoic acid. The trans-acid was isolated from a mixture of cis/trans diastereomers by the selective formation of a thiourea inclusion complex. The title compound was used for the synthesis of the 17β-ester of testosterone. In addition, [4-14C]-testosterone was esterfied using unlabelled trans acid. The three radiolabelled compounds will be used in metabolism studies. |