884340-19-6Relevant articles and documents
Development of novel, highly potent inhibitors of V-RAF murine sarcoma viral oncogene homologue B1 (BRAF): Increasing cellular potency through optimization of a distal heteroaromatic group
Suijkerbuijk, Bart M.J.M.,Niculescu-Duvaz, Ion,Gaulon, Catherine,Dijkstra, Harmen P.,Niculescu-Duvaz, Dan,Ménard, Delphine,Zambon, Alfonso,Nourry, Arnaud,Davies, Lawrence,Manne, Helen A.,Friedlos, Frank,Ogilvie, Lesley M.,Hedley, Douglas,Lopes, Filipa,Preece, Natasha P.U.,Moreno-Farre, Javier,Raynaud, Florence I.,Kirk, Ruth,Whittaker, Steven,Marais, Richard,Springer, Caroline J.
supporting information; experimental part, p. 2741 - 2756 (2010/09/04)
We describe the design, synthesis, and optimization of a series of new inhibitors of V-RAF murine sarcoma viral oncogene homologue B1 (BRAF), a kinase whose mutant form (V600E) is implicated in several types of cancer, with a particularly high frequency in melanoma. Our previously described inhibitors with a tripartite A-B-C system (where A is a hinge binding pyrido[4,5-b] imidazolone system, B is an aryl spacer group, and C is a heteroaromatic group) were potent against purified V600EBRAF in vitro but were less potent in accompanying cellular assays. Substitution of different aromatic heterocycles for the phenyl based C-ring is evaluated herein as a potential means of improving the cellular potencies of these inhibitors. Substituted pyrazoles, particularly 3-tert-butyl-1-aryl-1H-pyrazoles, increase the cellular potencies without detrimental effects on the potency on isolated V600EBRAF. Thus, compounds have been synthesized that inhibit, with low nanomolar concentrations, V600EBRAF, its downstream signaling in cells [as measured by the reduction of the phosphorylation of extracellular regulated kinase (ERK)], and the proliferation of mutant BRAF-dependent cells. Concomitant benefits are good oral bioavailability and high plasma concentrations in vivo.
IMIDAZO[4,5-B]PYRIDIN-2-ONE AND OXAZOLO[4,5-B]PYRIDIN-2-ONE COMPOUNDS AND ANALOGS THEREOF AS THERAPEUTIC COMPOUNDS
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Page/Page column 158, (2008/06/13)
The present invention pertains to certain imidazo[4,5-b]pyridin-2-one and oxazolo[4,5-b]pyridin-2-one compounds and analogs thereof, which, inter alia, inhibit RAF (e.g., B-RAF) activity, inhibit cell proliferation, treat cancer, etc., and more particularly to compounds of the formula (I): wherein: J is independently -O- or -NRN1-; RN1, if present, is independently -H or a substituent; RN2 is independently -H or a substituent; Y is independently -CH= or -N=; Q is independently -(CH2)j-M-(CH2)k- wherein: j is independently 0, 1 or 2; k is independently 0, 1, or 2; j+k is 0, 1, or 2; M is independently -O-, -S-, -NH-, -NMe-, or -CH2-; each of RP1, RP2, RP3, and RP4 is independently -H or a substituent; and additionally RP1 and RP2 taken together may be -CH=CH-CH=CH-; L is independently: a linker group formed by a chain of 2, 3, or 4 linker moieties; each linker moiety is independently -CH2-,-NRN-, -C(=X)-, or -S(=O)2-; exactly one linker moiety is -NRN-, or: exactly two linker moieties are -NRN-; exactly one linker moiety is -C(=X)-, and no linker moiety is -S(=O)2-; or: exactly one linker moiety is -S(=O)2-, and no linker moiety is -C(=X)-; no two adjacent linker moieties are -NRN-; X is independently =O or =S; each RN is independently -H or a substituent; A is independently: C6-14carboaryl, C5-14heteroaryl, C3-12carbocyclic, C3-12heterocyclic; and is independently unsubstituted or substituted; and pharmaceutically acceptable salts, solvates, amides, esters, ethers, N-oxides, chemically protected forms, and prodrugs thereof. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit RAF (e.g., B-RAF) activity, to inhibit receptor tyrosine kinase (RTK) activity, to inhibit cell proliferation, and in the treatment of diseases and conditions that are ameliorated by the inhibition of RAF, RTK, etc., proliferative conditions such as cancer (e.g., colorectal cancer, melanoma), etc.
