Catalytic carbonyl hydrosilylations via a titanocene borohydride–PMHS reagent system
作者:Godfred D. Fianu、Kyle C. Schipper、Robert A. Flowers II
DOI:10.1039/c7cy01088e
日期:——
Reduction of a wide range of aldehydes and ketones with catalytic amounts of titanocene borohydride in concert with a stoichiometric poly(methylhydrosiloxane) (PMHS) reductant is reported. Preliminary mechanistic studies demonstrate that the reaction is mediated by a reactive titanocene(III) complex, whose oxidation state remains constant throughout the reaction.
Direct Asymmetric Hydrogenation and Dynamic Kinetic Resolution of Aryl Ketones Catalyzed by an Iridium‐NHC Exhibiting High Enantio‐ and Diastereoselectivity
of ketones in excellent yields and good enantioselectivity (up to 93 % ee). Moreover, when using racemic α‐substituted ketones, excellent diastereoselectivities were obtained (dr 99:1) by dynamic kinetic resolution of the in situ formed enolate. Overall, the herein described hydrogenation occurs under ambient conditions using low hydrogen pressures, providing a direct and atom efficient method towards
[EN] PYRIDINE DERIVATIVES AS MUSCARINIC M1 RECEPTOR POSITIVE ALLOSTERIC MODULATORS<br/>[FR] DÉRIVÉS DE LA PYRIDINE EN TANT QUE MODULATEURS ALLOSTÉRIQUES POSITIFS DU RÉCEPTEUR M1 MUSCARINIQUE
申请人:PFIZER
公开号:WO2016009297A1
公开(公告)日:2016-01-21
The present invention provides, in part, compounds of Formula I: (I) N-oxides thereof, and pharmaceutically acceptable salts of the compounds or N-oxides; processes for the preparation of; intermediates used in the preparation of; and compositions containing such compounds,N-oxides, or salts, and their uses for treating M1-mediated (or M1-associated) disorders including, e.g., Alzheimer's disease, schizophrenia (e.g., its cognitive and negative symptoms), pain, addiction, and a sleep disorder.
[EN] 2-AMINOQUINOLINES AS MELANIN CONCENTRATING HORMONE RECEPTOR ANTAGONISTS<br/>[FR] 2-AMINOQUINOLINES SERVANT D'ANTAGONISTES DE RECEPTEUR DE L'HORMONE DE CONCENTRATION DE MELANINE
申请人:ABBOTT LAB
公开号:WO2003105850A1
公开(公告)日:2003-12-24
The present invention is related to compounds of formula (I), or a therapeutically suitable salt or prodrug thereof, which antagonize the effects of melanin-concentrating hormone (MCH) through the melanin concentrating hormone receptor and are useful for the prevention or treatment of eating disorders, weight gain and obesity.