PMID: 23916259

Authors:

Li B, Cociorva OM, Nomanbhoy T, Weissig H, Li Q, Nakamura K, Liyanage M, Zhang MC, Shih AY, Aban A, Hu Y, Cajica J, Pham L, Kozarich JW, Shreder KR

Title:

Hit-to-lead optimization and kinase selectivity of imidazo[1,2-a]quinoxalin-4-amine derived JNK1 inhibitors.

Journal:

Bioorg Med Chem Lett. 2013 Jul 8. pii: S0960-894X(13)00820-2. doi:, 10.1016/j.bmcl.2013.06.087.

Abstract:

As the result of a rhJNK1 HTS, the imidazo[1,2-a]quinoxaline 1 was identified as a 1.6muM rhJNK1 inhibitor. Optimization of this compound lead to AX13587 (rhJNK1 IC50=160nM) which was co-crystallized with JNK1 to identify key molecular interactions. Kinase profiling against 125+ kinases revealed AX13587 was an inhibitor of JNK, MAST3, and MAST4 whereas its methylene homolog AX14373 (native JNK1 IC50=47nM) was a highly specific JNK inhibitor.