Stereoselective metabolism of two keto-pyrrol analogues of 8-hydroxy-2-dipropyl-aminotetralin by freshly isolated rat hepatocytes.
In vitro metabolism models have been used to determine the relative metabolic stability of novel 2-aminotetralin analogues for the treatment of CNS diseases. Few of these new compounds had been produced as stereochemically pure materials and the achiral analytical techniques, used initially, measured the average metabolic clearance of the two enantiomers of the racemic mixtures. A chiral HPLC assay, using a Chiral AGP column, was developed for two of these racemic analogues and was used to measure the clearance of the enantiomers from suspensions of freshly isolated rat hepatocytes. Robust separations were obtained for both compounds and a number of metabolic products. The enantiomers of only one analogue were subject to different rates of metabolism. The extent of the difference was dependent upon the initial starting concentration of the incubation. The identity of certain metabolites was investigated using LC/MS. The enantio-selectivity appears to have arisen from the restricted hydroxylation of one analogue compared to that of the other.
Wood
S A
SA
Upjohn Laboratories-Europe, Crawley, England.
Parton
A H
AH
Simmonds
R J
RJ
Stevenson
D
D
D017371:8-Hydroxy-2-(di-n-propylamino)tetralin / Q000031:analogs & derivatives* / Q000378:metabolism*; D000818:Animals; D001711:Biotransformation; D002851:Chromatography, High Pressure Liquid; D066298:In Vitro Techniques; D008099:Liver / Q000166:cytology / Q000378:metabolism*; D013058:Mass Spectrometry; D051381:Rats; D017366:Serotonin Receptor Agonists / Q000378:metabolism*; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism
D017366:Serotonin Receptor Agonists; D017371:8-Hydroxy-2-(di-n-propylamino)tetralin