11-[2-(1-benzimidazolyl)ethylidene]-6,11-dihydrodibenz[b,e]oxep in-2- carboxylic acid derivatives and related compounds were synthesized and found to be potent TXA2/PGH2 receptorantagonists. Each compound synthesized was tested for its ability to displace [3H]U-46619 binding from guinea pig platelet TXA2/PGH2 receptors. Structure-activity relationship studies revealed that the following key elements were
Synthesis of Dimethoxy Activated Benzimidazoles and Bisbenzimidazoles
作者:David StC. Black、Mahiuddin Alamgir、Glenn C. Condie、Vesna Martinovic、Joanne Wood、Hayat Sholihin、Paul K. Bowyer、Naresh Kumar
DOI:10.3987/com-20-14278
日期:——
Reactivity of 4,6-Dimethoxy Activated Benzimidazoles
作者:David StC. Black、Mahiuddin Alamgir、Glenn C. Condie、Vesna Martinovic、Joanne Wood、Mohan Bhadbhade、Naresh Kumar
DOI:10.3987/com-20-14280
日期:——
4,6-Dimethoxy-2-substituted-benzimidazoles undergo formylation, acylation, nitration and bromination at C7. The 7-carbaldehydes can be reduced to the corresponding hydroxymethyl compounds. Benzimidazole-2-carbaldehydes can be prepared by oxidation of 2-methyl- and 2-styryl-benzimidazoles. N-Methylation and N-allylation have also been investigated and lead to isomeric mixtures of 4,6- and 5,7-dimethoxybenzimidazoles