- Potent and selective aminopyrimidine-based B-Raf inhibitors with favorable physicochemical and pharmacokinetic properties
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Recent clinical data provided proof-of-concept for selective B-Raf inhibitors in treatment of B-RafV600E mutant melanoma. Pyrazolopyridine-type B-Raf inhibitors previously described by the authors are potent and selective but exhibit low solubility requiring the use of amorphous dispersion-based formulation for achieving efficacious drug exposures. Through structure-based design, we discovered a new class of highly potent aminopyrimidine-based B-Raf inhibitors with improved solubility and pharmacokinetic profiles. The hinge binding moiety possesses a basic center imparting high solubility at gastric pH, addressing the dissolution limitation observed with our previous series. In our search for an optimal linker-hinge binding moiety system, amide-linked thieno[3,2-d]pyrimidine analogues 32 and 35 (G945), molecules with desirable physicochemical properties, emerged as lead compounds with strong efficacy in a B-RafV600E mutant mouse xenograft model. Synthesis, SAR, lead selection, and evaluation of key compounds in animal studies will be described.
- Mathieu, Simon,Gradl, Stefan N.,Ren, Li,Wen, Zhaoyang,Aliagas, Ignacio,Gunzner-Toste, Janet,Lee, Wendy,Pulk, Rebecca,Zhao, Guiling,Alicke, Bruno,Boggs, Jason W.,Buckmelter, Alex J.,Choo, Edna F.,Dinkel, Victoria,Gloor, Susan L.,Gould, Stephen E.,Hansen, Joshua D.,Hastings, Gregg,Hatzivassiliou, Georgia,Laird, Ellen R.,Moreno, David,Ran, Yingqing,Voegtli, Walter C.,Wenglowsky, Steve,Grina, Jonas,Rudolph, Joachim
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p. 2869 - 2881
(2012/06/01)
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- RAF INHIBITOR COMPOUNDS AND METHODS OF USE THEREOF
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Compounds of Formula I are useful for inhibition of Raf kinases. Methods of using compounds of Formula I and stereoisomers, tautomers, prodrugs and pharmaceutically acceptable salts thereof, for in vitro, in situ, and in vivo diagnosis, prevention or treatment of such disorders in mammalian cells, or associated pathological conditions are disclosed.
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Page/Page column 93
(2011/04/14)
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