Gas-phase thermolyses. Part 3. Gas-phase thermolysis of silylated thionocarboxylic acid derivatives: a route to thioketens?
作者:Lars Carlsen、Helge Egsgaard、Ernst Schaumann、Herbert Mrotzek、Wolf-R�diger Klein
DOI:10.1039/p29800001557
日期:——
The unimolecular gas-phase thermolytic decomposition of three silylated thionocarboxylic acid derivatives (2b), (3), and (8) have been studied by the flash vacuum thermolysis–field ionization mass spectrometry technique in the temperature range from 783 to 1 404 K in order to elucidate its possible applicability as a route to thioketens. Only very minor amounts of the expected thioketens were found
Dubois, Jacques-Emile; Saumtally, Imran; Lion, Claude, Bulletin de la Societe Chimique de France, 1984, vol. 2, # 3-4, p. 133 - 138
作者:Dubois, Jacques-Emile、Saumtally, Imran、Lion, Claude
DOI:——
日期:——
Syntheses and Evaluation of Anticonvulsant Profile and Teratogenicity of Novel Amide Derivatives of Branched Aliphatic Carboxylic Acids with 4-Aminobenzensulfonamide
作者:Naama Hen、Meir Bialer、Bogdan Wlodarczyk、Richard H. Finnell、Boris Yagen
DOI:10.1021/jm100170w
日期:2010.5.27
Despite the availability of 14 new antiepileptic drugs (AEDs), about 30% of epileptic patients are not seizure-free. Consequently there is substantial need to develop new effective AEDs. A novel class of aromatic amides composed of phenylacetic acid or branched aliphatic carboxylic acids, with five to nine carbons in their carboxylic moiety, and aminobenzenesulfonamide were synthesized and evaluated in the anticonvulsant rat-maximal electroshock (MES) and subcutaneous metrazol seizure (scMet) tests. Fourteen of the synthesized amides had an anticonvulsant ED(50) of <50 mg/kg in the rat-MES test. The amides 2-methyl-N-(4-sulfamoylphenyl)butyramide (10), 2-ethyl-N-(4-sulfamoylphenyl)butyramide (11), and 3,3-dimethyl-N-(4-sulfamoylphenyl)butyramide (15) were the most potent compounds possessing MES-ED(50) values of 7.6, 9.9, and 9.4 mg/kg and remarkable protective index (PI = TD(50)/ ED(50)) values of 65.7, 50.5, and 53.2, respectively. These potent sulfanylamides caused neural tube defects only at doses markedly exceeding their effective dose. The anticonvulsant properties of these compounds make them potential candidates for further development as new, potent, and safe AEDs.