Efficient One-Pot Synthesis of Spirooxindole Derivatives Catalyzed by <scp>l</scp>-Proline in Aqueous Medium
作者:Yuling Li、Hui Chen、Chunling Shi、Daqing Shi、Shunjun Ji
DOI:10.1021/cc9001185
日期:2010.3.8
An efficient one-potsynthesis of spirooxindole derivatives by three-component reaction of isatins, malononitrile (cyanoacetic ester) and 1,3-dicarbonyl compounds in water in the presence of l-proline is reported. This new protocol has the advantages of environmental friendliness, higher yields, shorter reaction times, low cost, and convenient operation.
Pot, atom and step-economic (PASE) synthesis of medicinally relevant spiro[oxindole-3,4′-pyrano[4,3-<i>b</i>]pyran] scaffold
作者:Michail N. Elinson、Fedor V. Ryzhkov、Victor A. Korolev、Mikhail P. Egorov
DOI:10.1515/hc-2015-0232
日期:2016.2.1
‘on-solvent’ approach to the substituted spirooxindole-3,4′-pyrano[4,3-b]pyrans – the pharmacologically perspective substances with known antiviral, antileishmanial, anticonvulsant and anti-HIV activities – is beneficial from the viewpoint of diversity-oriented large-scale processes and represents fast and environmentally benign synthetic concept for the multicomponent reactions strategy.