2-Substituted and 4-substituted aryl nitrone compounds
申请人:Kelly G. Michael
公开号:US20050182060A1
公开(公告)日:2005-08-18
The present invention provides aryl nitrones, compositions comprising the same and methods of their use for the treatment or prevention of oxidative, ischemic, ischemia/reperfusion-related and chemokine mediated conditions.
[EN] FLAVIN DERIVATIVES<br/>[FR] DÉRIVÉS DE LA FLAVINE
申请人:BIORELIX PHARMACEUTICALS INC
公开号:WO2010019208A1
公开(公告)日:2010-02-18
The present invention relates novel flavin derivatives and other flavin derivatives, their use and compositions for use as riboswitch ligands and/or anti-infectives. The invention also provides method of making novel flavin derivatives.
A Sc(OTf)3-catalyzed highly diastereoselective one-pot sequential [3 + 3] dipolar cycloaddition reaction of aldehyde or ketone, N-alkyl hydroxylamine, and spirocyclopropyl oxindole is developed, allowing facile construction of spirocyclic oxindole-tetrahydro-1,2-oxazines with sufficient structural diversity. The corresponding catalytic enantioselective one-pot protocol of aldehydes is also reported
Selective Ring Contraction of 5-Spirocyclopropane Isoxazolidines Mediated by Acids
作者:Franca M. Cordero、Federica Pisaneschi、Maria Salvati、Valentina Paschetta、Jean Ollivier、Jacques Salaün、Alberto Brandi
DOI:10.1021/jo034003g
日期:2003.4.1
The two-step process, intramolecular 1,3-dipolar cycloaddition/thermal rearrangement underacidicconditions, represents a general synthesis of a new class of 3,4-cis-fused bicyclic azetidin-2-ones starting from easily available compounds such as aminoacids, hydroxy acids, and dicarbonyl or amino alcohol derivatives.