Abstract:
:V-RAF murine sarcoma viral oncogene homolog B1 (BRAF) is a serine/threonine-specific protein kinase that is mutated with high frequency in cutaneous melanoma, and many other cancers. Inhibition of mutant BRAF is an attractive therapeutic approach for the treatment of melanoma. A triarylimidazole BRAF inhibitor bearing a phenylpyrazole group (dimethyl-[2-(4-{5-[4-(1H-pyrazol-3-yl)-phenyl]-4-pyridin-4-yl-1H-imidazol-2-yl}-phenoxy)-ethyl]-amine, 1a) was identified as an active BRAF inhibitor. Based on this starting point, we synthesized a series of analogues leading to the discovery of 6-{2-[4-(4-methyl-piperazin-1-yl)-phenyl]-5-pyridin-4-yl-3H-imidazol-4-yl}-2,4-dihydro-indeno[1,2-c]pyrazole (1j), with nanomolar activity in three assays: inhibition of purified mutant BRAF activity in vitro; inhibition of oncogenic BRAF-driven extracellular regulated kinase (ERK) activation in BRAF mutant melanoma cell lines; and inhibition of proliferation in these cells.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Niculescu-Duvaz D,Niculescu-Duvaz I,Suijkerbuijk BM,Ménard D,Zambon A,Nourry A,Davies L,Manne HA,Friedlos F,Ogilvie L,Hedley D,Takle AK,Wilson DM,Pons JF,Coulter T,Kirk R,Cantarino N,Whittaker S,Marais R,Springer CJdoi
10.1016/j.bmc.2010.06.031subject
Has Abstractpub_date
2010-09-15 00:00:00pages
6934-52issue
18eissn
0968-0896issn
1464-3391pii
S0968-0896(10)00559-6journal_volume
18pub_type
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