1023741-05-0Relevant academic research and scientific papers
New multicomponent reaction for the direct synthesis of β-aryl-γ-nitroesters promoted by hydrotalcite-derived mixed oxides as heterogeneous catalyst
D'Oca, Caroline R. M.,Naciuk, Fabricio F.,Silva, Jéssica C.,Guedes, Esthéfani P.,Moro, Celso C.,D'Oca, Marcelo G. M.,Santos, Leonardo S.,Natchigall, Fabiane M.,Russowsky, Dennis
, p. 285 - 298 (2016/12/18)
A new approach based on multicomponent/domino combined reactions for the synthesis of γ-nitroesters promoted by a mixed aluminium-magnesium oxides derived from hydrotalcite-like material was developed. Different γ-nitroesters were synthesized in 15-95percent yield using Meldrum's acid, aromatic aldehydes, nitromethane and different alcohols as reagents and solvents. The γ-aminobutyric acid derivatives, Phenibut and Baclofen, were prepared in 63 and 61percent overall yield, respectively, through a two steps synthetic strategy. A mechanistic pathway was proposed based on the gas chromatography mass spectrometry (GC-MS) and electrospray ionization mass spectrometry (ESI-MS) experiments.
One pot domino reaction accessing γ-nitroesters: Synthesis of GABA derivatives
Naciuk, Fabricio F.,Vargas, Debora Z.,D'oca, Caroline R. M.,Moro, Celso C.,Russowsky, Dennis
, p. 1643 - 1653 (2015/03/18)
Michael addition of 1,3-dicarbonyl compounds to nitrostyrenes is efficiently promoted by hydrotalcite [Mg-Al] to afford the respective γ-nitrodicarbonyl adducts. Differently, the addition of Meldrum's acid leads to a direct access of γ-nitroesters through a one pot domino process. GABA derivatives (+/-)-phenibut and (+/-)-baclofen were readily synthesized from the respective nitro adducts.
Potent and selective xanthine-based inhibitors of phosphodiesterase 5
Arnold, Nichola J.,Arnold, Ruth,Beer, David,Bhalay, Gurdip,Collingwood, Stephen P.,Craig, Sarah,Devereux, Nicholas,Dodds, Mark,Dunstan, Andrew R.,Fairhurst, Robin A.,Farr, David,Fullerton, Joseph D.,Glen, Angela,Gomez, Sylvie,Haberthuer, Sandra,Hatto, Julia D.I.,Howes, Colin,Jones, Darryl,Keller, Thomas H.,Leuenberger, Beate,Moser, Heinz E.,Muller, Irene,Naef, Reto,Nicklin, Paul A.,Sandham, David A.,Turner, Katharine L.,Tweed, Morris F.,Watson, Simon J.,Zurini, Mauro
, p. 2376 - 2379 (2007/10/03)
Inhibitors of PDE5 are useful therapeutic agents for treatment of erectile dysfunction. A series of novel xanthine derivatives has been identified as potent inhibitors of PDE5, with good levels of selectivity against other PDE isoforms, including PDE6. St
