New 5-Substituted Derivatives of Ethyl 2,3-Dihydro-3-oxoisothiazolo[5,4-b]pyridine-2-acetate
摘要:
New series of ethyl 5-substituted 2,3-dihydro-3-oxoisothiazolo[5,4-b] pyridine-2-acetate was prepared either a) directly by reaction of 5-substituted 2-chlorothio-3-pyridinecarbonyl chlorides with ethyl glycinate or b) by oxidation of the correspondent 2-mercapto-3-pyridinecarboxamides. New 5-substituted 1,2-dihydro-2-thioxo-3-pyridinecarboxylic acids as starting materials are described.
New 5-Substituted Derivatives of Ethyl 2,3-Dihydro-3-oxoisothiazolo[5,4-b]pyridine-2-acetate
摘要:
New series of ethyl 5-substituted 2,3-dihydro-3-oxoisothiazolo[5,4-b] pyridine-2-acetate was prepared either a) directly by reaction of 5-substituted 2-chlorothio-3-pyridinecarbonyl chlorides with ethyl glycinate or b) by oxidation of the correspondent 2-mercapto-3-pyridinecarboxamides. New 5-substituted 1,2-dihydro-2-thioxo-3-pyridinecarboxylic acids as starting materials are described.
Starting from a 3D-model for the antineoplastic activity of diarylsulfonylureas several new features were proposed and tested. Both types of assayed compounds, the N-(2-pyridylsulfonyl)urea and N-(2-pyridylsulfenyl)urea derivatives, inhibited by 50% the growth of the CCRF-CEM cell line at a dosage near to 1 microM. The N -(2-pyrimidinyl) derivative of the sulfenylurea 6c showed a better profile against