88786-11-2Relevant articles and documents
An enantioselective aza-Friedel-Crafts reaction of 5-aminoisoxazoles with isatin-derived: N -Boc ketimines
Liu, Hui,Yan, Yingkun,Li, Min,Zhang, Xiaomei
supporting information, p. 3820 - 3824 (2021/05/14)
By employing a chiral phosphoric acid as a catalyst, an enantioselective aza-Friedel-Crafts reaction of 5-aminoisoxazoles with isatin-derived N-Boc ketimines was realized. The reaction provided a wide variety of novel 3-isoxazole 3-amino-oxindoles with good yields (up to 99%) and moderate to good enantioselectivities (up to 99%). The absolute configuration of one product was assigned by X-ray crystal structural analysis and a plausible reaction mechanism was proposed. In addition, a scale-up reaction was performed successfully. Finally, one product was subjected to Suzuki-Miyaura coupling with phenylboronic acid to afford the product in a moderate yield without erosion of the enantioselectivity. This journal is
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
Rowbottom, Martin W.,Faraoni, Raffaella,Chao, Qi,Campbell, Brian T.,Lai, Andiliy G.,Setti, Eduardo,Ezawa, Maiko,Sprankle, Kelly G.,Abraham, Sunny,Tran, Lan,Struss, Brian,Gibney, Michael,Armstrong, Robert C.,Gunawardane, Ruwanthi N.,Nepomuceno, Ronald R.,Valenta, Ianina,Hua, Helen,Gardner, Michael F.,Cramer, Merryl D.,Gitnick, Dana,Insko, Darren E.,Apuy, Julius L.,Jones-Bolin, Susan,Ghose, Arup K.,Herbertz, Torsten,Ator, Mark A.,Dorsey, Bruce D.,Ruggeri, Bruce,Williams, Michael,Bhagwat, Shripad,James, Joyce,Holladay, Mark W.
experimental part, p. 1082 - 1105 (2012/04/04)
The Ras/RAF/MEK/ERK mitogen-activated protein kinase (MAPK) signaling pathway plays a central role in the regulation of cell growth, differentiation, and survival. Expression of mutant BRAFV600E results in constitutive activation of the MAPK pathway, which can lead to uncontrolled cellular growth. Herein, we describe an SAR optimization campaign around a series of quinazoline derived BRAFV600E inhibitors. In particular, the bioisosteric replacement of a metabolically sensitive tert-butyl group with fluorinated alkyl moieties is described. This effort led directly to the identification of a clinical candidate, compound 40 (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 mouse model, upon dosing at 30 and 100 mg/kg BID.
Approach to the library of fused pyridine-4-carboxylic acids by combes-type reaction of acyl pyruvates and electron-rich amino heterocycles
Volochnyuk, Dmitriy M.,Ryabukhin, Sergey V.,Plaskon, Andrey S.,Dmytriv, Yuri V.,Grygorenko, Oleksandr O.,Mykhailiuk, Pavel K.,Krotko, Dmitriy G.,Pushechnikov, Alexei,Tolmachev, Andrey A.
scheme or table, p. 510 - 517 (2010/09/05)
A library of fused pyridine-4-carboxylic acids (including pyrazolo[3,4-b]pyridines, isoxazolo[5,4-b]pyridines, furo[2,3-b]pyridines, thieno[2,3-b]pyridines, and pyrido[2,3-d]pyrimidines) was generated by Combes-type reaction of acyl pyruvates and electron-rich amino heterocycles followed by hydrolysis of the ester. The library members were also demonstrated to undergo the standard combinatorial transformations including amide coupling and esterification, as well as less common heterocyclizations to 1,2,4-triazoles and 1,2,4-oxadiazoles.
