Jakobsen, P. published the artcileInhibitors of the tissue factor/factor VIIa-induced coagulation: synthesis and in vitro evaluation of novel specific 2-aryl substituted 4H-3,1-benzoxazin-4-ones, Application of 2-Amino-3,6-dichlorobenzoic acid, the main research area is benzoxazinone preparation structure anticoagulant.
The synthesis of a series of novel 2-aryl substituted 4H-3,1-benzoxazin-4-ones and their evaluation as specific inhibitors of the Tissue Factor (TF)/Factor VIIa (FVIIa)-induced pathway of coagulation is reported. Inhibitory activities (IC50 values) in the range 0.17 to °40 μM on the activation of Factor X (FX) by the TF/FVIIa complex were found for compounds having one or two electroneg. substituents such as F, Cl and NO2 in the 2-aryl substituent. Different substitutions both electron-attracting and donating groups were allowed in the 5, 6, 7 and 8 positions. Several of the compounds showed a selectivity ratio towards FX and thrombin of °50, thus being the first small mols. described as potential drugs for oral antithrombotic treatment without side effects such as bleeding which is observed especially with thrombin inhibitors. The best substituent pattern being the 2-aryl group substituted with: 2-F; 2,6-F2; or 2-FX; 6-Cl; together with electroneg. substitution in the 5, 6, 7, or 8 positions. 2-Heteroaryl substituents like thienyl and furanyl were of low activity while some 2-(2-chloro-3-pyridyl) derivatives had inhibitory activity <10 μM and a good selectivity. Bioorganic & Medicinal Chemistry published new progress about Anticoagulants. 3032-32-4 belongs to class chlorides-buliding-blocks, name is 2-Amino-3,6-dichlorobenzoic acid, and the molecular formula is C7H5Cl2NO2, Application of 2-Amino-3,6-dichlorobenzoic acid.
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