Non-nucleoside inhibitors of HCV NS5B polymerase. Part 1: Synthetic and computational exploration of the binding modes of benzothiadiazine and 1,4-benzothiazine HCV NS5b polymerase inhibitors
The importance of internal hydrogen bonding in a series of benzothiadiazine and 1,4-benzothiazine NS5b inhibitors has been explored. Computational analysis has been used to compare the protonated vs. anionic forms of each series and we demonstrate that activity against HCV NS5b polymerase is best explained using the anionic forms. The syntheses and structure-activity relationships for a variety of new analogs are also discussed.
Hendricks, Robert T.,Fell, Jay B.,Blake, James F.,Fischer, John P.,Robinson, John E.,Spencer, Stacey R.,Stengel, Peter J.,Bernacki, April L.,Leveque, Vincent J.P.,Pogam, Sophie Le,Rajyaguru, Sonal,Najera, Isabel,Josey, John A.,Harris, Jason R.,Swallow, Steven
scheme or table
p. 3637 - 3641
(2010/04/05)
Synthesis and structure-activity relationships of N-substituted 2-[(2-imidazolylsulfinyl)methyl]anilines as a new class of gastric H+/K+-ATPase inhibitors
A series of N-substituted 2-[(2-imidazolylsulfinyl)methyl]anilines was synthesized and evaluated for its biological activity against H+/K+-ATPase prepared from rabbit stomach and gastric acid secretions in Heidenhain pouch dogs. Monoalkyl substituents on the nitrogen atom of the aniline moiety markedly inhibited the enzyme activity to the same degree as omeprazole, a representative H+/K+-ATPase inhibitor. Most of these compounds, administered at 3 mg/kg i.v. inhibited histamine-stimulated gastric acid secretion. The inhibitory activity of these derivatives on the enzymes at pH 6.0 was more potent than that at pH 7.4, and was distinctly correlated to stability in aqueous solution at pH 5.0.