Abstract
A novel series of 4-piperidinopyridines and 4-piperidinopyrimidines showed potent and selective inhibition of rat 2,3-oxidosqualene cyclase-lanosterol synthase (OSC) (e.g. 26 IC(50) rat = 398 +/- 25 nM, human = 112 +/- 25 nM) and gave selective oral inhibition of rat cholesterol biosynthesis (26 ED(80) = 1.2 +/- 0.3 mg/kg, n = 5; HMGCoA reductase inhibitor simvastatin ED(80) = 1.2 +/- 0.3 mg/kg, n = 5). The piperidinopyrimidine OSC inhibitors have a significantly lower pK(a) than the corresponding pyridine or the previously reported quinuclidine OSC inhibitor series. This indicates that other novel OSC inhibitors may be found in analogues of this series across a broader pK(a) range (6.0-9.0). These series may yield novel hypocholesterolemic agents for the treatment of cardiovascular disease.
MeSH terms
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Administration, Oral
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Animals
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Anticholesteremic Agents / chemical synthesis*
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Anticholesteremic Agents / chemistry
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Anticholesteremic Agents / pharmacology
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Cholesterol / biosynthesis
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Chromatography, High Pressure Liquid
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Enzyme Inhibitors / chemical synthesis*
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Enzyme Inhibitors / chemistry
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Enzyme Inhibitors / pharmacology
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Female
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In Vitro Techniques
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Intramolecular Transferases / antagonists & inhibitors*
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Microsomes / drug effects
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Microsomes / enzymology
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Piperazines / chemical synthesis*
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Piperazines / chemistry
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Piperazines / pharmacology
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Piperidines / chemical synthesis*
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Piperidines / chemistry
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Piperidines / pharmacology
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Pyridines / chemical synthesis*
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Pyridines / chemistry
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Pyridines / pharmacology
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Pyrimidines / chemical synthesis*
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Pyrimidines / chemistry
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Pyrimidines / pharmacology
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Rats
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Structure-Activity Relationship
Substances
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1-(2-methyl-4-pyrimidinyl)-4-(1-(4-bromophenylsulfonyl)piperazin-4-ylcarbonyl)piperidine
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1-(4-pyrimidinyl)-4-(1-(4-bromophenylsulfonyl)piperazin-4-ylcarbonyl)piperidine
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Anticholesteremic Agents
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Enzyme Inhibitors
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Piperazines
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Piperidines
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Pyridines
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Pyrimidines
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Cholesterol
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Intramolecular Transferases
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lanosterol synthase