Potent BRAF kinase inhibitors based on 2,4,5-trisubstituted imidazole with naphthyl and benzothiophene 4-substituents
摘要:
The RAS-RAF-MEK-ERK pathway is hyperactivated in 30% of human cancers. BRAF is a serine-threonine kinase, belonging to this pathway that is mutated with high frequency in human melanoma and other cancers thus BRAF is an important therapeutic target in melanoma. We have designed inhibitors of BRAF based on 2,4,5-trisubstituted imidazoles with naphthyl and benzothiophene-4-substituents. Two compounds were discovered to be potent BRAF inhibitors: 1-(6-{2-[4-(2-dimethylamino-ethoxy) phenyl]-5-(pyridin-4-yl)-1H-imidazol-4-yl} benzo[b]thiophen-3-yl)-2,2,2-trifluoroethanol (1i) with BRAF IC50 = 190 nM and with cellular GI(50) = 2100 nM, and 6-{2-[4-(2-dimethylamino-ethoxy)-phenyl]-5-pyridin-4-yl-3H-imidazol-4-yl}-naphthalen-1-ol (1q) with IC50 = 9 nM and GI(50) = 220 nM. (C) 2013 Elsevier Ltd. All rights reserved.
Electrochemical fluorination of N,N-dimethylperfluoroacylamides
摘要:
The electrochemical fluorination (ECF) of N,N-dimethylperfluoroacylamides gives the corresponding perfluoro-N,N-dimethylacylamides in low yield. With increase of the number of carbon atoms in the perfluoroacyl radical the yield of the required perfluoro-NN-dimethylacylamides is slightly increased. (C) 2002 Elsevier Science B.V. All rights reserved.
4,5-Diaryl-.alpha.-(polyhalomethyl)-2-thiophenemethanols such as 4-(4-methoxyphenyl)-5-(4-methylthiophenyl)-.alpha.,.alpha.-bis(trifluorome thyl)-2-thiophenemethanol useful for treating arthritis and/or alleviating pain.
A novel synthesis of per(poly)fluoroalkyl aldehydes
作者:Chang-Ming Hu、Xiao-Qing Tang
DOI:10.1016/s0022-1139(00)80105-0
日期:1993.4
A novel synthesis of per(poly)fluoroalkyl aldehydes in high yield by the reaction ofper(poly)fluoroalkyliodides or bromides with dimethylformamide initiated by aPbBr2(catalyst)/Al bimetal redox system is described.
The RAS-RAF-MEK-ERK pathway is hyperactivated in 30% of human cancers. BRAF is a serine-threonine kinase, belonging to this pathway that is mutated with high frequency in human melanoma and other cancers thus BRAF is an important therapeutic target in melanoma. We have designed inhibitors of BRAF based on 2,4,5-trisubstituted imidazoles with naphthyl and benzothiophene-4-substituents. Two compounds were discovered to be potent BRAF inhibitors: 1-(6-2-[4-(2-dimethylamino-ethoxy) phenyl]-5-(pyridin-4-yl)-1H-imidazol-4-yl} benzo[b]thiophen-3-yl)-2,2,2-trifluoroethanol (1i) with BRAF IC50 = 190 nM and with cellular GI(50) = 2100 nM, and 6-2-[4-(2-dimethylamino-ethoxy)-phenyl]-5-pyridin-4-yl-3H-imidazol-4-yl}-naphthalen-1-ol (1q) with IC50 = 9 nM and GI(50) = 220 nM. (C) 2013 Elsevier Ltd. All rights reserved.
Electrochemical fluorination of N,N-dimethylperfluoroacylamides
作者:Nikolai V Ignat’ev、Michael Schmidt、Udo Heider、Andriy Kucherina、Peter Sartori、Fatiah M Helmy
DOI:10.1016/s0022-1139(01)00545-0
日期:2002.2
The electrochemical fluorination (ECF) of N,N-dimethylperfluoroacylamides gives the corresponding perfluoro-N,N-dimethylacylamides in low yield. With increase of the number of carbon atoms in the perfluoroacyl radical the yield of the required perfluoro-NN-dimethylacylamides is slightly increased. (C) 2002 Elsevier Science B.V. All rights reserved.