NOVEL ANTHRANILIC ACID DERIVATIVES AND CHLORIDE CHANNEL BLOCKING AGENT CONTAINING THE SAME
申请人:Lee Changjoon Justin
公开号:US20090131527A1
公开(公告)日:2009-05-21
The present invention relates to novel anthranilic acid derivatives represented by Chemical Formula I, and a chloride channel blocking agent containing the anthranilic acid derivative or its pharmacologically acceptable salts as an active ingredient. In another aspect, the present invention relates to a method of accurately and efficiently detecting the intracellular chloride channel inhibition and method of screening a chloride channel blocking agent.
2-Amino-2′-hydroxybenzophenones 3 have been synthesized by acylation of phenols with 2-isocyanatobenzoyl chloride 2 in the presence of aluminium trichloride. The ring-chain tautomerism of the reagent 2 promoted by Lewis acid has been established on the basis of a crystal structure analysis of the 1:1 complex formed by 2 and aluminium trichloride.