PMID: 12570369

Authors:

Burgey CS, Robinson KA, Lyle TA, Sanderson PE, Lewis SD, Lucas BJ, Krueger JA, Singh R, Miller-Stein C, White RB, Wong B, Lyle EA, Williams PD, Coburn CA, Dorsey BD, Barrow JC, Stranieri MT, Holahan MA, Sitko GR, Cook JJ, McMasters DR, McDonough CM, Sanders WM, Wallace AA, Clayton FC, Bohn D, Leonard YM, Detwiler TJ Jr, Lynch JJ Jr, Yan Y, Chen Z, Kuo L, Gardell SJ, Shafer JA, Vacca JP

Title:

Metabolism-directed optimization of 3-aminopyrazinone acetamide thrombin inhibitors. Development of an orally bioavailable series containing P1 and P3 pyridines.

Journal:

J Med Chem. 2003 Feb 13;46(4):461-73.

Abstract:

Recent efforts in the field of thrombin inhibitor research have focused on the identification of compounds with good oral bioavailability and pharmacokinetics. In this manuscript we describe a metabolism-based approach to the optimization of the 3-(2-phenethylamino)-6-methylpyrazinone acetamide template (e.g., 1) which resulted in the modification of each of the three principal components (i.e., P1, P2, P3) comprising this series. As a result of these studies, several potent thrombin inhibitors (e.g., 20, 24, 25) were identified which exhibit high levels of oral bioavailability and long plasma half-lives.