摘要:
A highly ligand efficient lead molecule was rapidly developed into a DPP-IV selective candidate series using focused small library synthesis. A significant hurdle for series advancement was genetic safety since some agents in this series impaired chromosome division that was detected using the in vitro micronucleus assay. A recently developed high-throughput imaging-based in vitro micronucleus assay enabled the identification of chemical space with a low probability of micronucleus activity. Advanced profiling of a subset within this space identified a compound with a clean safety pro. le, an acceptable human DPP-IV inhibition pro. le based on the rat PK/PD model and a projected human dose that was suitable for clinical development. (c) 2009 Elsevier Ltd. All rights reserved.