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.
Conformationally Constrained Analogues of <i>N</i>-(Piperidinyl)-5-(4-Chlorophenyl)-1-(2,4- Dichlorophenyl)-4-Methyl-1<i>H</i>-Pyrazole-3-Carboxamide (SR141716): Design, Synthesis, Computational Analysis, And Biological Evaluations
作者:Yanan Zhang、Jason P. Burgess、Marcus Brackeen、Anne Gilliam、S. Wayne Mascarella、Kevin Page、Herbert H. Seltzman、Brian F. Thomas
DOI:10.1021/jm8000778
日期:2008.6.1
extensively documented, however, the conformational properties of this class have received less attention. In an attempt to better understand ligand conformations optimal for receptor recognition, we have designed and synthesized a number of derivatives of 1, including a four-carbon-bridged molecule (11), to constrain rotation of the diaryl rings. Computational analysis of 11 indicates approximately 20