Kinesin spindle protein (KSP) inhibitors. Part 1: The discovery of 3,5-diaryl-4,5-dihydropyrazoles as potent and selective inhibitors of the mitotic kinesin KSP
Cox, C.D., Breslin, M.J., Mariano, B.J., Coleman, P.J., Buser, C.A., Walsh, E.S., Hamilton, K., Huber, H.E., Kohl, N.E., Torrent, M., Yan, Y., Kuo, L.C., Hartman, G.D.(2005) Bioorg Med Chem Lett 15: 2041-2045
- PubMed: 15808464 
- DOI: https://doi.org/10.1016/j.bmcl.2005.02.055
- Primary Citation of Related Structures:  
1YRS - PubMed Abstract: 
Optimization of high-throughput screening (HTS) hits resulted in the discovery of 3,5-diaryl-4,5-dihydropyrazoles as potent and selective inhibitors of KSP. Dihydropyrazole 15 is a potent, cell-active KSP inhibitor that induces apoptosis and generates aberrant mitotic spindles in human ovarian carcinoma cells at low nanomolar concentrations. X-ray crystallographic evidence is presented which demonstrates that these inhibitors bind in an allosteric pocket of KSP distant from the nucleotide and microtubule binding sites.
Organizational Affiliation: 
Department of Medicinal Chemistry, Merck Research Laboratories, PO Box 4, Sumneytown Pike, West Point, PA 19486, USA. chris_cox@merck.com