Nitrile Ylides: Diastereoselective Cycloadditions using Chiral Oxzolidinones Without Lewis Acid
摘要:
Lewis acid complexation is generally required for chiral-auxiliary-controlled stereoselectivity, and chiral Lewis acid catalysis is frequently optimal for introducing asymmetry. In this work, we show that nitrile ylide cycloadditions to electron-poor acceptors attached to chiral auxiliaries proceed in high yield and stereoselectivity In the absence of Lewis acids. In contrast, chiral Lewis acids are inferior in these cycloadditions.
The present invention relates to smooth muscle spasmolytic agents, pharmaceutical compositions containing them and method of using said compounds and compositions for the treatment of urinary incontinence, and other smooth muscle contractility conditions. More particularly, the present invention relates to certain metabolically stabilized secondary amines having smooth muscle relaxing properties while avoiding, on administration to a mammal, adverse side effects such as prominent antimuscarinic, arrhythmogenic and cardiodepressive effects.
Novel Spirotropane Compounds And Methods For The Modulation Of Chemokine Receptor Activity
申请人:Chan Chun Kong Laval
公开号:US20090047238A1
公开(公告)日:2009-02-19
Compounds according to formula, (I):
wherein A, R
1
and R
2
are as defined herein, and the pharmaceutically acceptable salts, hydrates and solvates thereof are useful for the modulation of CCR5 chemokine receptor activity.
[EN] DERIVATIVES OF 3-(2-HYDROXY-5-METHYPHENYL)-N,N-DIISOPROPYL-3-PHENYLPROPYLAMINE AND METHODS OF USE THEREOF<br/>[FR] DÉRIVÉS DE 3-(2-HYDROXY-5-MÉTHYLVINYL)-N,N-DIISOPROPYL-3-PHÉNYLPROPYLAMINE, ET LEUR PROCÉDÉ D'UTILISATION
申请人:CONCERT PHARMACEUTICALS INC
公开号:WO2009126844A2
公开(公告)日:2009-10-15
This invention relates to novel derivatives of tolterodine, 5-hydroxymethyl tolterodine, fesoterodine and pharmaceutically acceptable salts thereof. This invention also provides compositions comprising a compound of this invention and the use of such compositions in methods of treating diseases and conditions that are beneficially treated by muscarinic receptor antagonists.