FLUORINATED DIBENZOFURAN AND DIBENZOTHIOPHENE DERIVATIVES
申请人:MERCK PATENT GMBH
公开号:US20160298034A1
公开(公告)日:2016-10-13
Disclosed are dibenzofuran and dibenzothiophene derivatives of the general formula I,
in which X
1
, X
2
, W, Y, R, A, Z and m have the meaning defined in claim
1,
to a process for the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.
1,2,4-Triazolsulfone: A novel isosteric replacement of acylsulfonamides in the context of Na V 1.7 inhibition
作者:Alessandro A. Boezio、Kristin Andrews、Christiane Boezio、Margaret Chu-Moyer、Katrina W. Copeland、Erin F. DiMauro、Robert S. Foti、Robert T. Fremeau、Hua Gao、Stephanie Geuns-Meyer、Russell F. Graceffa、Hakan Gunaydin、Hongbing Huang、Daniel S. La、Joseph Ligutti、Bryan D. Moyer、Emily A. Peterson、Violeta Yu、Matthew M. Weiss
DOI:10.1016/j.bmcl.2018.04.035
日期:2018.6
Recently, the identification of several classes of aryl sulfonamides and acyl sulfonamides that potently inhibit Na(v)1.7 and demonstrate high levels of selectivity over other Na-v isoforms have been reported. The fully ionizable nature of these inhibitors has been shown to be an important part of the pharmacophore for the observed potency and isoform selectivity. The requirement of this functionality, however, has presented challenges associated with optimization toward inhibitors with drug-like properties and minimal off-target activity. In an effort to obviate these challenges, we set out to develop an orally bioavailable, selective Na(v)1.7 inhibitor, lacking these acidic functional groups. Herein, we report the discovery of a novel series of inhibitors wherein a triazolesulfone has been designed to serve as a bioisostere for the acyl sulfonamide. This work culminated in the delivery of a potent series of inhibitors which demonstrated good levels of selectivity over Na v 1.5 and favorable pharmacokinetics in rodents. (C) 2018 Elsevier Ltd. All rights reserved.
The synthesis and electro-optic properties of liquid crystalline 2-(2,3-difluorobiphenyl-4′-yl)-1,3-dioxanes
作者:Chu Chuan Dong、Peter Styring、John W. Goodby、Lawrence K. M. Chan
DOI:10.1039/a902351h
日期:——
Fifty-six novel alkyl and/or alkoxy disubstituted 2-(2,3-difluorobiphenyl-4â²-yl)-1,3-dioxanes (DFBPD) were prepared. Smectic C and nematic mesophases were exhibited by most of the alkyl-alkoxy homologues. Conversely, most of the dialkyl compounds exhibited smectic C, smectic A and nematic phases. The birefringence (În), dielectric anisotropy (Îõ), spontaneous polarisation and response times of two ferroelectric mixtures formulated from the dioxanyl systems were determined. The birefringence results were compared with eight other groups of mixtures where the materials were based on different core systems. The overall electro-optic properties of the DFBPDs were found to be comparable to the best of the eight most commonly used materials in ferroelectric display devices.
制备了 56 种新型烷基和/或烷氧基二取代的 2-(2,3-二氟联苯-4´-基)-1,3-二氧六环 (DFBPD)。大多数烷基-烷氧基同系物展现出近晶 C 和向列相中間相。相反,多数二烷基化合物展现出近晶 C、近晶 A 和向列相。测定了两个由二氧六环体系构成的铁电混合物的双折射 (Δn)、介电各向异性 (Δε)、自发极化和响应时间。双折射结果与基于不同核心体系的 8 组混合物进行了比较。发现 DFBPD 的整体电光性质与最常用的 8 种铁电显示器材料相当。