Identification of 1-(3-(6,7-Dimethoxyquinazolin-4-yloxy)phenyl)-3-(5-(1,1,1-trifluoro-2-methylpropan-2-yl)isoxazol-3-yl)urea Hydrochloride (CEP-32496), a Highly Potent and Orally Efficacious Inhibitor of V-RAF Murine Sarcoma Viral Oncogene Homologue B1 (BRAF) V600E
作者:Martin W. Rowbottom、Raffaella Faraoni、Qi Chao、Brian T. Campbell、Andiliy G. Lai、Eduardo Setti、Maiko Ezawa、Kelly G. Sprankle、Sunny Abraham、Lan Tran、Brian Struss、Michael Gibney、Robert C. Armstrong、Ruwanthi N. Gunawardane、Ronald R. Nepomuceno、Ianina Valenta、Helen Hua、Michael F. Gardner、Merryl D. Cramer、Dana Gitnick、Darren E. Insko、Julius L. Apuy、Susan Jones-Bolin、Arup K. Ghose、Torsten Herbertz、Mark A. Ator、Bruce D. Dorsey、Bruce Ruggeri、Michael Williams、Shripad Bhagwat、Joyce James、Mark W. Holladay
DOI:10.1021/jm2009925
日期:2012.2.9
(CEP-32496). Compound 40 exhibits high potency against several BRAFV600E-dependent cell lines and selective cytotoxicity for tumor cell lines expressing mutant BRAFV600E versus those containing wild-type BRAF. Compound 40 also exhibits an excellent PK profile across multiple preclinical species. In addition, significant oral efficacy was observed in a 14-day BRAFV600E-dependent human Colo-205 tumor xenograft
Ras / RAF / MEK / ERK丝裂原活化蛋白激酶(MAPK)信号通路在调节细胞生长,分化和存活中起着核心作用。突变BRAF V600E的表达导致MAPK途径的组成性激活,这可能导致细胞生长不受控制。在本文中,我们描述了围绕一系列由喹唑啉衍生的BRAF V600E抑制剂的SAR优化运动。特别地,描述了用氟化烷基部分对代谢敏感的叔丁基进行生物等位取代。这项工作直接导致了临床候选化合物40(CEP-32496)的鉴定。化合物40对几种BRAF V600E表现出高效力表达突变型BRAF V600E的肿瘤细胞系与含有野生型BRAF的肿瘤细胞系相比,具有依赖性的细胞系和选择性的细胞毒性。化合物40在多个临床前物种中也表现出出色的PK分布。另外,以30和100mg / kg BID给药时,在14天依赖BRAF V600E的人Colo-205肿瘤异种移植小鼠模型中观察到显着的口服功效。