Synthesis and structure based optimization of novel Akt inhibitors
Lippa, B., Pan, G., Corbett, M., Li, C., Kauffman, G.S., Pandit, J., Robinson, S., Wei, L., Kozina, E., Marr, E.S., Borzillo, G., Knauth, E., Barbacci-Tobin, E.G., Vincent, P., Troutman, M., Baker, D., Rajamohan, F., Kakar, S., Clark, T., Morris, J.(2008) Bioorg Med Chem Lett 18: 3359-3363
- PubMed: 18456494 
- DOI: https://doi.org/10.1016/j.bmcl.2008.04.034
- Primary Citation of Related Structures:  
3CQU, 3CQW - PubMed Abstract: 
Based on a high throughput screening hit, pyrrolopyrimidine inhibitors of the Akt kinase are explored. X-ray co-crystal structures of two lead series results in the understanding of key binding interactions, the design of new lead series, and enhanced potency. The syntheses of these series and their biological activities are described. Spiroindoline 13j is found to have an Akt1 kinase IC(50) of 2.4+/-0.6 nM, Akt cell potency of 50+/-19 nM, and provides 68% inhibition of tumor growth in a mouse xenograft model (50 mg/kg, qd, po).
Organizational Affiliation: 
Pfizer, Inc., PGRD Groton, 558 Eastern Point Road, Groton, CT 06340, USA. blaise.lippa@cubist.com