Potent anti-muscarinic activity in a novel series of quinuclidine derivatives
摘要:
The synthesis and biological evaluation of a novel family of M-3 muscarinic antagonists are described. A systematic modification of the substituents to a novel alkyne-quinuclidine scaffold yielded original compounds displaying potent in vitro anticholinergic properties. (c) 2005 Elsevier Ltd. All rights reserved.
Aryl Diazinyl Ketoximes: Synthesis and Configurational Assignment
摘要:
Preparation of a series of new aryl diazinyl ketoximes (7a,b - 12a,b) required as synthetic building blocks is described. Separation of the E/Z-isomers obtained was achieved by means of chromatography, their configuration was assigned using nmr techniques. Moreover, procedures for the synthesis of the starting ketones (1b - 6b) are given.
Carbonylative Hiyama coupling of aryl halides with arylsilanes under balloon pressure of CO
作者:Sheng Chang、Ying Jin、Xiu Rong Zhang、Yong Bing Sun
DOI:10.1016/j.tetlet.2016.02.058
日期:2016.5
An efficient protocol has been developed for the carbonylative Hiyama coupling of aryl halides using the cesium fluoride as a promoter by palladium-catalyzed in NMP. This protocol was applied to a wide variety of functionalized and hindered aryliodides and bromides with arylsilanes, to afford the desired biaryl ketones in good to excellent yields.
Carbonylative coupling of aryl tosylates/triflates with arylboronic acids under CO atmosphere
作者:Cheng Yi Hao、Dan Wang、Ya Wei Li、Lin Lin Dong、Ying Jin、Xiu Rong Zhang、He Yun Zhu、Sheng Chang
DOI:10.1039/c6ra14678c
日期:——
The carbonylative Suzuki–Miyaura reaction between aryl tosylates/triflates with arylboronic acid is herein reported, using base-free conditions and a balloon pressure of carbon monoxide. Under these conditions, unsymmetrical biaryl ketones were obtained in modest to excellent yields. This method was adapted to the synthesis of oxybenzone and ketoprofen in good yields under mild conditions.
Quinuclidine derivatives processes for preparing them and their uses as m2 and/or m3 muscarinic receptor inhibitors
申请人:Guyaux Michel
公开号:US20050020660A1
公开(公告)日:2005-01-27
The invention concerns quinuclidine derivatives of formula I or II wherein the substituents are as defined in the specification, as well as their use as pharmaceuticals. The compounds of the invention_show high affinities for m3 and/or m2 muscarinic receptors and are particularly suited for treating urinary incontinence.