Synthesis and antibacterial activity of 1-substituted 5-aryl-4-aroyl-3-hydroxy-3-pyrrolin-2-ones
作者:V. L. Gein、S. G. Pitirimova、É. V. Voronina、N. Yu. Porseva、V. I. Pantsurkin
DOI:10.1007/bf02464279
日期:1997.11
5-aryl-3-hydroxy-3-pyrrolin-2-ones exhibit various types of pharmacological activity, depending on the character of substituents in positions 1 and 4. For example, the introduction of an alkoxycarbonyl group in position 4 and an aromatic substituent in position 1 leads to compounds possessing pronounced antiviral activity [1], while the presence of a carboxymethyl group in position 4 imparts antiinflammatory
Approach to the Library of 3-Hydroxy-1,5-dihydro-2<i>H</i>-pyrrol-2-ones through a Three-Component Condensation
作者:Sergey V. Ryabukhin、Dmitriy M. Panov、Andrey S. Plaskon、Oleksandr O. Grygorenko
DOI:10.1021/co300082t
日期:2012.12.10
A convenient procedure for the parallel synthesis of 3-hydroxy-1,5-dihydro-2H-pyrrol-2-ones through a three-component condensation of active methylene compounds, aldehydes, and amines was developed. It was shown that the use of acetic acid as the reaction medium was suitable for the considerably reactive substrates with no additional functionalities. The substrates with low reactivity and those possessing carboxylic groups or additional basic centers required the use of DMF as the solvent and chlorotrimethylsilane as the reaction promoter was necessary. More than 3000 pyrrolones were synthesized by the developed procedure. To demonstrate the scope of the described approach 114 library representatives were fully characterized.