Metabolism of hydroanthracenones in rabbits

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Abstract
1. The metabolism of 1-oxo-octahydro- and 2- and 9-oxoperhydro-anthracenes was investigated in rabbits. All compounds increased the urinary glucuronide content. 2. The 1-oxo and 2-oxo compounds were reduced to the corresponding alcohols whereas the 9-oxo compound was hydroxylated. 3. The reduction in vitro of these compounds and related ketones was investigated with three different enzyme systems (liver alcohol dehydrogenase, hydroxy steroid dehydrogenase, aromatic aldehyde–ketone reductase) in an attempt to explain the results in vivo. 4. Successful reduction of many ketones with aromatic aldehyde–ketone reductase suggests that the kidney may be of importance in the reduction in vivo of certain cyclic carbonyl compounds.