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Síntese de 1h-pirazóis usando irradiação de ultra-som e de 2-pirrolonas derivadas do ácido levulínico
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2008-11-25)
This work describes the synthesis of 4,5-dihydropirazoles through a sonochemical methodology, from the reaction of cyclocondensation of 1,3-diaryl-2-propen-1-ones with aminoguanidine hydrochloride and thiosemicarbazide. ...
Asymmetric construction of substituted pyrrolidines via 1,3-dipolar cycloaddition of azomethine ylides and chiral acrylates derived from biomass
(Elsevier, 2014-03)
The first application of chiral auxiliaries synthesized from levoglucosenone (a biomass-derived anhydrosugar) in asymmetric 1,3-dipolar cycloaddition reactions of azomethine ylides is herein reported. The corresponding ...
The stereochemistry of the addition of chlorotitanium enolates of N-acyl oxazolidin-2-ones to 5- and 6- membered N-acyliminium ions
(Sociedade Brasileira de Química, 2001)
Synthesis of conformationally restricted acetylcholine analogues. Comparing lipase-mediated resolution with simulated moving bed chromatography of arylated beta-hydroxy-pyrrolidines
(Pergamon-elsevier Science LtdOxfordInglaterra, 2007)
Síntese de 1-aril-4-[(dimetilamino)metileno] pirrolidino-2,3,5-trionas utilizando irradiação de micro-ondas
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2011-02-24)
The synthesis of a series of 1-aryl-4-[(dimethylamino)methylene] pyrrolidine-
2,3,5-trione from the cyclocondensation reaction between b-enaminodiketone
[Cl3C(O)C(=CHNMe2)C(O)CO2Et] and aniline derivatives [R = Ph, 3-Me-C6H4, ...
Antifungal amides from Piper arboreum and Piper tuberculatum
(Elsevier B.V., 2014)
Synthesis of enantiomeric polyhydroxyalkylpyrrolidines from 1,3-dipolar cycloadducts. Evaluation as inhibitors of a β-galactofuranosidase
(American Chemical Society, 2016-04)
Enantiomeric 2,3,4-tris(hydroxyalkyl)-5-phenylpyrrolidines have been synthesized from the major cycloadducts obtained by the 1,3-dipolar cycloaddition of sugar enones with azomethine ylides derived from natural amino acids. ...
1,3-Dipolar cycloaddition reactions of azomethine ylides with a cellulose-derived chiral enone. A novel route for organocatalysts development
(American Chemical Society, 2012-05)
Cellulose-derived chiral pyrrolidines were synthesized in excellent yields, regioselectivities, and stereoselectivities via a 1,3-dipolar cycloaddition reaction between levoglucosenone and azomethine ylides. An unprecedented ...
Aryl piperazine and pyrrolidine as antimalarial agents. Synthesis and investigation of structure-activity relationships
(Elsevier, 2011)
Piperazine and pyrrolidine derivatives were synthesised and evaluated for their capacity to inhibit the growth of Plasmodium falciparum chloroquine-resistant (FCR-3) strain in culture. The combined presence of a hydroxyl ...