Portal de Periódicos da CAPES

Tetrahydrochromenoimidazoles as Potassium-Competitive Acid Blockers (P-CABs): Structure−Activity Relationship of Their Antisecretory Properties and Their Affinity toward the hERG Channel

2010; American Chemical Society; Volume: 53; Issue: 9 Linguagem: Inglês

10.1021/jm100040c

1520-4804

Andreas Marc Palmer, Vittoria Chiesa, Anja Schmid, Gabriela Münch, Burkhard Grobbel, Peter Jan Zimmermann, Christof Brehm, Wilm Buhr, Wolfgang‐Alexander Simon, W. Krömer, Stefan Postius, Jürgen Volz, Dietmar Hess,

Ion channel regulation and function

Potassium-competitive acid blockers (P-CABs) constitute a new therapeutic option for the treatment of acid-related diseases that are widespread and constitute a significant economical burden. Enantiomerically pure tetrahydrochromenoimidazoles were prepared using the readily available candidate 4 (BYK 405879) as starting material or the Noyori asymmetric reduction of ketones as key reaction. A comprehensive SAR regarding the influence of the 5-carboxamide and the 8-aryl residue on in vitro activity, acid-suppression in the Ghosh Schild rat, and affinity toward the hERG channel was established. In addition, efficacy and duration of the antisecretory action was examined for the most promising target compounds by 24 h pH-metry in the fistula dog and a significantly different SAR was observed as compared to the Ghosh Schild rat. Several tetrahydrochromenoimidazoles were identified that possessed a comparable profile as the candidate 4.