Highly enantioselective hydrogenation of 2-oxo-4-arybutanoic acids to 2-hydroxy-4-arylbutanoic acids
摘要:
The Ru-catalyzed asymmetric hydrogenation of 2-oxo-4-arybutanoic acids to afford 2-hydroxy-4-arybutanoic acids was accomplished by employing SunPhos as chiral ligand and 1 M aq HBr as additive. The high enantioselectivities (88.4%-92.6% ee) and efficiency (TON=10,000, TOF=300 h(-1)) make this method efficient for the synthesis of an important intermediate, (R)-2-hydroxy-4-phenylbutanoic acid, for ACE inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] PYRIDAZINONE COMPOUNDS AS CALCILYTICS<br/>[FR] COMPOSES DE PYRIDAZINONE SERVANT DE CALCILYTIQUES
申请人:NPS PHARMA INC
公开号:WO2007044796A2
公开(公告)日:2007-04-19
[EN] Various calcilytic compounds and pharmaceutical compositions containing these compounds are disclosed. Calcilytic compounds are compounds capable of inhibiting calcium receptor activity. Methods for preparing calcilytic compounds, oral bioavailability of calcilytic compounds, and their use as calcium receptor antagonists are also disclosed. [FR] L'invention concerne des composés calcilytiques variés et des compositions pharmaceutiques contenant ces composés. Les composants calcilytiques de l'invention sont des composés permettant d'inhiber l'activité du récepteur de calcium. L'invention concerne également des méthodes pour préparer des composés calcilytiques. La biodisponibilité orale des composés calcilytiques de l'invention et l'utilisation de ces composés en tant qu'antagonistes du récepteur de calcium sont également décrites dans la description.