ATP-Citrate Lyase as a Target for Hypolipidemic Intervention. 2. Synthesis and Evaluation of (3R*,5S*)-ω-Substituted-3-carboxy-3,5-dihydroxyalkanoic Acids and Their γ-Lactone Prodrugs as Inhibitors of the Enzyme in Vitro and in Vivo
摘要:
series of (3R*,5S*)-omega-substituted-3-carboxy-3,5-dihydroxyalkanoic acids have been synthesized and evaluated as inhibitors of the recombinant human form of ATP-citrate lyase. The best of these have K-i's in the 200-1000 nM range. As the corresponding thermodynamically favored gamma-lactone prodrugs, a number of compounds are able to inhibit cholesterol and fatty acid synthesis in HepG2 cells and reduce plasma triglyceride levels in vivo. The best of these, compound 77, is able to induce clear hypocholesterolemic and hypotriglyceridaemic responses when administered orally to rat and dog. These results provide evidence to support the hypothesis that compounds which inhibit ATP-citrate lyase have the potential to be a novel class of hypolipidemic agent, which possess combined hypocholesterolemic and hypotriglyceridemic activities.
ATP-Citrate Lyase as a Target for Hypolipidemic Intervention. Design and Synthesis of 2-Substituted Butanedioic Acids as Novel, Potent Inhibitors of the Enzyme
摘要:
ATP-citrate lyase is the primary enzyme responsible for the synthesis of cytosolic acetyl-CoA in many tissues. Inhibitors of the enzyme represent a potentially novel class of hypolipidemic agent, which are anticipated to have combined hypocholesterolemic and hypotriglyceridemic properties. A series of a-substituted butanedioic acids have been designed and synthesized as inhibitors of the enzyme, The best compounds, 58, 68, 71, 74 have reversible K-i's in the 1-3 mu M range against the isolated rat enzyme, As representative of this compound class, 58, has been shown to exert its inhibitory action through a mainly competitive mechanism with respect to citrate and a noncompetitive one with respect to CoA. None of the inhibitors were able to inhibit cholesterol and/or fatty acid synthesis in HepG2 cells. This has been attributed to the adverse physicochemical properties of the molecules leading to a lack of cell penetration. Despite this, a lead structural class of compound has been identified with the potential for modification into potent, cell-penetrant, and efficacious inhibitors of ATP-citrate lyase.
ATP-Citrate Lyase as a Target for Hypolipidemic Intervention. Design and Synthesis of 2-Substituted Butanedioic Acids as Novel, Potent Inhibitors of the Enzyme
作者:Andrew D. Gribble、Roland E. Dolle、Antony Shaw、David McNair、Riccardo Novelli、Christine E. Novelli、Brian P. Slingsby、Virendra P. Shah、David Tew、Barbara A. Saxty、Mark Allen、Pieter H. Groot、Nigel Pearce、John Yates
DOI:10.1021/jm960167w
日期:1996.1.1
ATP-citrate lyase is the primary enzyme responsible for the synthesis of cytosolic acetyl-CoA in many tissues. Inhibitors of the enzyme represent a potentially novel class of hypolipidemic agent, which are anticipated to have combined hypocholesterolemic and hypotriglyceridemic properties. A series of a-substituted butanedioic acids have been designed and synthesized as inhibitors of the enzyme, The best compounds, 58, 68, 71, 74 have reversible K-i's in the 1-3 mu M range against the isolated rat enzyme, As representative of this compound class, 58, has been shown to exert its inhibitory action through a mainly competitive mechanism with respect to citrate and a noncompetitive one with respect to CoA. None of the inhibitors were able to inhibit cholesterol and/or fatty acid synthesis in HepG2 cells. This has been attributed to the adverse physicochemical properties of the molecules leading to a lack of cell penetration. Despite this, a lead structural class of compound has been identified with the potential for modification into potent, cell-penetrant, and efficacious inhibitors of ATP-citrate lyase.
ATP-Citrate Lyase as a Target for Hypolipidemic Intervention. 2. Synthesis and Evaluation of (3<i>R</i>*,5<i>S</i>*)-ω-Substituted-3-carboxy-3,5-dihydroxyalkanoic Acids and Their γ-Lactone Prodrugs as Inhibitors of the Enzyme in Vitro and in Vivo
作者:Andrew D. Gribble、Robert J. Ife、Antony Shaw、David McNair、Christine E. Novelli、Susan Bakewell、Virendra P. Shah、Roland E. Dolle、Pieter H. Groot、Nigel Pearce、John Yates、David Tew、Helen Boyd、Stephen Ashman、Drake S. Eggleston、R. Curtis Haltiwanger、George Okafo
DOI:10.1021/jm980091z
日期:1998.9.1
series of (3R*,5S*)-omega-substituted-3-carboxy-3,5-dihydroxyalkanoic acids have been synthesized and evaluated as inhibitors of the recombinant human form of ATP-citrate lyase. The best of these have K-i's in the 200-1000 nM range. As the corresponding thermodynamically favored gamma-lactone prodrugs, a number of compounds are able to inhibit cholesterol and fatty acid synthesis in HepG2 cells and reduce plasma triglyceride levels in vivo. The best of these, compound 77, is able to induce clear hypocholesterolemic and hypotriglyceridaemic responses when administered orally to rat and dog. These results provide evidence to support the hypothesis that compounds which inhibit ATP-citrate lyase have the potential to be a novel class of hypolipidemic agent, which possess combined hypocholesterolemic and hypotriglyceridemic activities.