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Bioorg Med Chem Lett. 2009 Oct 1;19(19):5576-81. doi: 10.1016/j.bmcl.2009.08.049. Epub 2009 Aug 15.

GDC-0449-a potent inhibitor of the hedgehog pathway.

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Genentech, Small Molecule Drug Discovery 1 DNA Way, South San Francisco, CA 94080, United States.

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  • Bioorg Med Chem Lett. 2010 Jan 15;20(2):771.


SAR for a wide variety of heterocyclic replacements for a benzimidazole led to the discovery of functionalized 2-pyridyl amides as novel inhibitors of the hedgehog pathway. The 2-pyridyl amides were optimized for potency, PK, and drug-like properties by modifications to the amide portion of the molecule resulting in 31 (GDC-0449). Amide 31 produced complete tumor regression at doses as low as 12.5mg/kg BID in a medulloblastoma allograft mouse model that is wholly dependent on the Hh pathway for growth and is currently in human clinical trials, where it is initially being evaluated for the treatment of BCC.

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