Department of Medicinal Chemistry, Merck & Co. Inc., PO Box 2000, Rahway, NJ 07065, USA. scott_edmondson@merck.com
Abstract:
In-house screening of the Merck sample collection identified proline derived homophenylalanine 3 as a DPP-IV inhibitor with modest potency (DPP-IV IC50=1.9 microM). Optimization of 3 led to compound 37, which is among the most potent and selective DPP-IV inhibitors discovered to date.