ATP-citrate-lyase as a target for hypolipidemic intervention. Sulfoximine and 3-hydroxy-.beta.-lactam containing analogs of citric acid as potential tight-binding inhibitors
作者:Roland E. Dolle、David McNair、Mark J. Hughes、Lawrence I. Kruse、Drake Eggelston、Barbara A. Saxty、Timothy N. C. Wells、Pieter H. E. Groot
DOI:10.1021/jm00104a014
日期:1992.12
Citric acid analogues (+/-)-12a,b and (+/-)-17a,b, where one of the primary carboxylates has been replaced by a sulfoximinoyl and a 3-(3-hydroxy-beta-lactamyl) moiety, respectively, have been synthesized and evaluated as inhibitors of ATP-citrate lyase. The design of these inhibitors was based on methionine sulfoximine and tabtoxinine beta-lactam, potent, tight-binding inhibitors of glutamine synthetase. Both ATP-citrate lyase and glutamine synthetase employ phosphate-carboxylate anhydrides as a method for carboxylate activation during catalysis. Only one diastereomer, (+/-)-12a, displayed weak, reversible inhibition, while the remaining citrate analogues (+/-)-12b and (+/-)-17a,b were inactive against the lyase. No time-dependent inactivation of the enzyme was observed.