PMID: 8612044Jan 1, 1995Paper

Bioisosterism in drug design: identification of and structure-activity relationships in a series of glycine anilide ACAT inhibitors

Bioorganic & Medicinal Chemistry
W H RoarkB D Roth

Abstract

To examine the effects of bioisosteric replacement on the biological activity of our previously disclosed disubstituted urea inhibitors of the enzyme acyl-CoA:cholesterol acyltransferase (ACAT), we prepared a series of N'-substituted and N',N'-disubstituted glycine anilides. These compounds were tested for the ability to inhibit ACAT in vitro and lower plasma total cholesterol in cholesterol-fed rats given a single high-fat, high-cholesterol meal. ACAT inhibitory potency was greatest in compounds containing 2,6-diisopropyl substituents in the anilide portion with the glycine nitrogen substituted by a 1,1-diphenylmethyl moiety. Small improvements in potency in vitro were obtained by substitution of electron donating groups in the 2-, 3- or 5-positions of the aryl rings of the 1,1-diphenylmethyl moiety, but not by substitution in the 4-position. In vitro potency was maintained, but not improved by acylation of the glycine nitrogen. Through a QSAR analysis of in vitro ACAT inhibition for this set of compounds, an equation could be derived which accounted for 85% of the variance in the dataset. An optimal clogp of 6.65 was found, comparable to that found for other series of ACAT inhibitors. In general, compounds from this series di...Continue Reading

References

Feb 1, 1979·European Journal of Clinical Investigation·K R NorumB Selbekk
May 1, 1991·Trends in Pharmacological Sciences·D R Sliskovic, A D White
Aug 1, 1990·Clinical Pharmacology and Therapeutics·W S HarrisZ Look
Jan 1, 1990·Pharmacology & Therapeutics·G C DaherR B Diasio
Jan 1, 1986·Arteriosclerosis : an Official Journal of the American Heart Association, Inc·F P Bell, R G Schaub

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