Catalytic hydrogenation of α,β-unsaturated carboxylic acid derivatives using copper(<scp>i</scp>)/N-heterocyclic carbene complexes
作者:Birte M. Zimmermann、Sarah C. K. Kobosil、Johannes F. Teichert
DOI:10.1039/c8cc09853k
日期:——
air-stable copper(I)/N-heterocyclic carbene complex enables the catalytic hydrogenation of enoates and enamides, hitherto unreactive substrates employing homogeneous copper catalysis and H2 as a terminal reducing agent. This atom economic transformation replaces commonly employed hydrosilanes and can also be carried out in an asymmetric fashion.
Optimization of a Novel Quinazolinone-Based Series of Transient Receptor Potential A1 (TRPA1) Antagonists Demonstrating Potent in Vivo Activity
作者:Laurie B. Schenkel、Philip R. Olivieri、Alessandro A. Boezio、Holly L. Deak、Renee Emkey、Russell F. Graceffa、Hakan Gunaydin、Angel Guzman-Perez、Josie H. Lee、Yohannes Teffera、Weiya Wang、Beth D. Youngblood、Violeta L. Yu、Maosheng Zhang、Narender R. Gavva、Sonya G. Lehto、Stephanie Geuns-Meyer
DOI:10.1021/acs.jmedchem.6b00039
日期:2016.3.24
developing a transient receptor potential A1 (TRPA1) antagonist for the treatment of pain due to a wealth of data implicating its role in pain pathways. Despite this, identification of a potent small molecule tool possessing pharmacokinetic properties allowing for robust in vivo target coverage has been challenging. Here we describe the optimization of a potent, selective series of quinazolinone-based
由于大量数据暗示了其在疼痛途径中的作用,因此开发一种用于治疗疼痛的瞬时受体电位A1(TRPA1)拮抗剂引起了人们的极大兴趣。尽管如此,鉴定具有药代动力学特性以允许强大的体内靶标覆盖的有效小分子工具一直具有挑战性。在这里,我们描述了一种有效的,选择性的基于喹唑啉酮的TRPA1拮抗剂系列的优化。高通量筛选确定4,它们具有有希望的效价和选择性。一种策略旨在优化效能同时增加极性,以改善内在清除率,最终发现嘌呤酮27(AM-0902),这是一种有效的TRPA1选择性拮抗剂,具有药代动力学特性,可在体内对大鼠TRPA1 IC 50进行30倍以上的覆盖。化合物27在大鼠中表现出对AITC诱导的退缩的剂量依赖性抑制作用,从而证实了其作为研究TRPA1在体内疼痛模型中作用的工具的效用。
Neue anwendungsmöglichkeiten des reformatzky-reagenz zur syntheses substituierter essigsäureethylester
作者:Kaspar Bott
DOI:10.1016/s0040-4039(00)75836-9
日期:1994.1
When generated in dichloromethane, the Reformatzky reagent from ethyl bromoacetate can react with diphenylcholoromethane, 1-bromoadamantane and 1-phenylethyl chlorides to form the corresponding α -substituted ethyl acetates in excellent to good yields. The mechanism of these Reformatzky reactions is interpreted in terms of a carbocation as intermediate which originates from the interaction of the alkyl
[EN] NICOTINAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE NICOTINAMIDE
申请人:PFIZER LTD
公开号:WO2009153721A1
公开(公告)日:2009-12-23
The present invention relates to compounds of the formula (I) and pharmaceutically acceptable salts and solvates thereof, wherein the substituents are defined herein, to compositions containing such compounds and to the uses of such compounds for the treatment of allergic and respiratory conditions.
The present invention relates to compounds of the formula (I) and pharmaceutically acceptable salts and solvates thereof, wherein the substituents are defined herein, to compositions containing such compounds and to the uses of such compounds for the treatment of allergic and respiratory conditions.