Abstract
SAR studies on the stereoisomers of CP-470,711 suggested that in vivo epimerization was taking place in rats. Further metabolism studies revealed that no epimerization was occurring in dogs, and that no epimerization was expected in humans. A mechanism for the in vivo epimerization is proposed involving an oxidation-reduction pathway of the secondary benzylic alcohol, in contrast to an acid/base-promoted epimerization of the same center during chemical synthesis.
MeSH terms
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Administration, Oral
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Animals
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Dogs
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Enzyme Inhibitors / chemistry
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Enzyme Inhibitors / metabolism*
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Enzyme Inhibitors / pharmacology
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Hepatocytes / enzymology
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Humans
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L-Iditol 2-Dehydrogenase / antagonists & inhibitors*
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L-Iditol 2-Dehydrogenase / blood
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L-Iditol 2-Dehydrogenase / chemical synthesis
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L-Iditol 2-Dehydrogenase / metabolism*
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Oxidation-Reduction
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Pyrimidines / chemistry
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Pyrimidines / metabolism*
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Pyrimidines / pharmacology
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Rats
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Species Specificity
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Stereoisomerism
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Structure-Activity Relationship
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Substrate Specificity
Substances
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CP-470711
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Enzyme Inhibitors
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Pyrimidines
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L-Iditol 2-Dehydrogenase