title: Species differences in the metabolism of alpha-1-trans-4-dimethylaminotetrahydro-3-furyl-cyclohexanephenylglycolate, an experimental anticholinergic agent.
abstract: Metabolism studies in the rat, dog and cat have demonstrated a definite species difference in biotransformation and elimination of alpha-1-trans-4-dimethylaminotetrahydro-3-furylcyclohexanephenylglycolate (Lilly 82537), an experimental anticholinergic agent. Separation and identification of urinary and biliary metabolites by gas chromatographic mass spectrometric analysis has shown three mechanisms to be involved in the metabolism of Lilly 82537 in these species; N-demethylation, aliphatic hydroxylation ahd ester hydrolysis. A major portion of the drug administered was eliminated unaltered in the cat and dog, while only trace quantities of parent drug were observed in the urine and bile of rats. These metabolic differences may be responsible for observed species differences in the pharmacologic activity of Lilly 82537.
mesh_terms: D000818:Animals; D001646:Bile / Q000378:metabolism; D001711:Biotransformation; D002415:Cats; D002849:Chromatography, Gas; D004285:Dogs; D005260:Female; D005663:Furans / Q000378:metabolism; D006016:Glycolates / Q000378:metabolism* / Q000652:urine; D006868:Hydrolysis; D006900:Hydroxylation; D008297:Male; D013058:Mass Spectrometry; D008745:Methylation; D010276:Parasympatholytics / Q000378:metabolism* / Q000652:urine; D051381:Rats; D013045:Species Specificity
chemical_list: D005663:Furans; D006016:Glycolates; D010276:Parasympatholytics