Inhibitors of cholesterol biosynthesis. 1. trans-6-(2-Pyrrol-1-ylethyl)-4-hydroxypyran-2-ones, a novel series of HMG-CoA reductase inhibitors. 1. Effects of structural modifications at the 2- and 5-positions of the pyrrole nucleus
摘要:
A novel series of trans-6-(2-pyrrol-1-ylethyl)-4-hydroxypyran-2-ones and their dihydroxy acid derivatives were prepared and evaluated for their ability to inhibit the enzyme HMG-CoA reductase in vitro. A systematic study of substitution at the 2- and 5-positions of the pyrrole ring revealed that optimum potency was realized with the 2-(4-fluorophenyl)-5-isopropyl derivative 8x, which possessed 30% of the in vitro activity of the potent fungal metabolite compactin (I). A molecular modeling analysis led to the description of a pharmacophore model characterized by (A) length limits of 5.9 and 3.3 A for the 2- and 5-substituents, respectively, as well as an overall width limit of 10.6 A across the pyrrole ring from the 2- to the 5-substituent and (B) an orientation of the ethyl(ene) bridge to the 4-hydroxypyran-2-one ring nearly perpendicular to the planes of the parent pyrrole, hexahydronaphthalene, and phenyl rings of the structures examined (Figure 3, theta = 80-110 degrees). Attempts to more closely mimic compactin's polar isobutyric ester side chain with the synthesis of 2-phenylpyrroles containing polar phenyl substituents resulted in analogues with equal or slightly reduced potencies when compared to the 2-[(unsubstituted or 4-fluoro)phenyl]pyrroles, supporting the hypothesis that inhibitory potency is relatively insensitive to side-chain polarity or charge distribution in this area.
The invention relates to a series of substituted pyrrole derivatives, compositions comprising the same, and methods of treating conditions and disorders using such compounds and compositions.
The invention relates to a series of substituted pyrrole derivatives, compositions comprising the same, and methods of treating conditions and disorders using such compounds and compositions.
[EN] PYRROLE DERIVATIVES AND THEIR METHODS OF USE<br/>[FR] DÉRIVÉS DE PYRROLE ET LEURS PROCÉDÉS D'UTILISATION
申请人:ABBOTT LAB
公开号:WO2008002974A1
公开(公告)日:2008-01-03
[EN] The invention relates to a series of substituted pyrrole derivatives, compositions comprising the same, and methods of treating conditions and disorders using such compounds and compositions. [FR] L'invention concerne une série de dérivés de pyrrole substitués, des compositions incluant ces dérivés et des procédés de traitement des conditions et des troubles utilisant de tels composés et de telles compositions.