2-(2-thienyl)-4H-[1,2,4]triazolo[1,5-a]benzimidazole;2-(thiophen-2-yl)-4H-benzimidazo[1,2-b][1,2,4]triazole;Cambridge id 6464346;2-thiophen-2-yl-1H-[1,2,4]triazolo[1,5-a]benzimidazole
2-(4-Methylphenyl)-4H-[1,2,4]triazolo[1,5-a]benzimidazole and its previously unknown 2-(2-furyl)- and 2-(2-thienyl)-substituted analogs were synthesized by cyclization of benzimidazole-1,2-diamine with the corresponding carboxylic acid chlorides. The IR, H-1, C-13, and N-15 NMR, and mass spectra of the cyclization products in combination with the results of quantum-chemical calculations of NMR chemical shifts showed radical differences of [1,2,4]triazolo[1,5-a]benzimidazoles having no substituent on N-4 from the recently reported low-melting products of oxidation of 2-amino-1-arylmethylideneaminobenzimidazoles with (diacetoxy-lambda(3)-iodanyl)benzene, which, as we believe, were erroneously assigned analogous structure.
[EN] COMPOUNDS FOR TREATING DUCHENNE MUSCULAR DYSTROPHY<br/>[FR] COMPOSÉS POUR TRAITER LA DYSTROPHIE MUSCULAIRE DE DUCHENNE
申请人:SUMMIT CORP PLC
公开号:WO2009013477A1
公开(公告)日:2009-01-29
Compounds of general formula (I), wherein X1, X2, X3, R1, R2, R3, Y and Z are as defined herein are useful for the treatment and prevention of Duchenne muscular dystrophy, Becker muscular dystrophy and cachexia.
COMPOUNDS FOR TREATING DUCHENNE MUSCULAR DYSTROPHY
申请人:Summit Corporation Plc
公开号:EP2167508A1
公开(公告)日:2010-03-31
Syntheses of [1,2,4]triazolo[1,5-a]benzazoles enabled by the transition-metal-free oxidative N–N bond formation
作者:Erchang Shang、Junzhi Zhang、Jinyi Bai、Zhan Wang、Xiang Li、Bing Zhu、Xiaoguang Lei
DOI:10.1039/c6cc01976e
日期:——
A transition-metal-free NCS oxidized N-N bond formation strategy has been developed to generate various structurally interesting [1,2,4]triazolo[1,5-a]benzazoles efficiently. The mechanism of the key oxidative N-N bond formation has been investigated...
作者:A. S. Morkovnik、T. A. Kuz’menko、L. N. Divaeva、G. S. Borodkin
DOI:10.1134/s107042801306016x
日期:2013.6
2-(4-Methylphenyl)-4H-[1,2,4]triazolo[1,5-a]benzimidazole and its previously unknown 2-(2-furyl)- and 2-(2-thienyl)-substituted analogs were synthesized by cyclization of benzimidazole-1,2-diamine with the corresponding carboxylic acid chlorides. The IR, H-1, C-13, and N-15 NMR, and mass spectra of the cyclization products in combination with the results of quantum-chemical calculations of NMR chemical shifts showed radical differences of [1,2,4]triazolo[1,5-a]benzimidazoles having no substituent on N-4 from the recently reported low-melting products of oxidation of 2-amino-1-arylmethylideneaminobenzimidazoles with (diacetoxy-lambda(3)-iodanyl)benzene, which, as we believe, were erroneously assigned analogous structure.