Certain trans-6-[2-(N-heteroaryl-3,5-disubstituted) pyrazol-4-yl)ethyl]- or ethenyl]tetrahydro-4-hydroxy-2H-pyran-2-ones and the corresponding ring-opened acids, esters and N-oxides derived therefrom which are potent inhibitors of the enzyme 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG CoA reductase) and are thus useful hydrolipidemic or hypocholesterolemic agents. Pharmaceutical compositions containing such compounds, and a method of inhibiting the biosynthesis of cholesterol employing such pharmaceutical compositions are also disclosed.
本发明涉及某些特定的trans-6-[2-(N-杂环芳基-3,5-二取代)
吡唑-4-基)乙基]-或
乙烯基]四氢-
4-羟基-
2H-吡喃-2-酮及其相应的开
环酸、酯和N-氧化物。它们是3-羟基-3-甲基戊二酰
辅酶A还原酶(
HMG CoA还原酶)的有效
抑制剂,因此可用作降脂或降
胆固醇剂。本发明还涉及含有这种化合物的药物组合物,以及使用这种药物组合物抑制
胆固醇生物合成的方法。