A comparison of ring-chain tautomerism in heterocycles derived from 2-aminobenzenesulfonamide and anthranilamide
作者:Olga A. Maloshitskaya、Jari Sinkkonen、Valery V. Alekseyev、Kirill N. Zelenin、Kalevi Pihlaja
DOI:10.1016/j.tet.2005.04.074
日期:2005.7
2-aminobenzenesulfonamide derivatives with aromaticaldehydes and 1,3-dicarbonyl compounds were synthesized. Substituted benzaldehyde derivatives of neither aminoamides showed tautomerism in solutions. Reaction products of 2-aminobenzenesulfonamide with p-substituted benzoylacetic aldehydes and p-substituted benzoylacetones undergo ring-chaintautomerism with a good linear correlation between the ring-chain equilibrium
A series of 3,4-dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide derivatives were synthesized and evaluated for their activity as allosteric modulators of kainate-activated currents in primary cultures of cerebellar granule neurons. Substitution of different groups at the 3-position of the benzothiadiazine ring distinguished between positive and negative allosteric modulatory properties.