Design of photonic liquid crystal materials: synthesis and evaluation of new chiral thioindigo dopants designed to photomodulate the spontaneous polarization of ferroelectric liquid crystals
摘要:
由光致变色掺杂物 (R,R)-6,6′-bis(2-octyloxy)-5,5′-dinitrothioindigo 和 (R,R)-5,5′-dichloro-6,6′-bis(2-octyloxy)thioindigo 在波长 λ=514 和 532 nm 下照射,引起了铁电 S C * 液晶相自发极化 (P S ) 的增加,增幅范围从 1.4 到 4.0。P S 的这种增加是在不伴随 S C * 相不稳定化的情况下实现的,且与因顺-反光异构化导致的硫靛核心的横向偶极矩增加相一致。硫靛核心对 P S 的贡献是通过与手性侧链的立体极化耦合实现的,该耦合在硝基和氯取代基的存在下得到了增强。
Design of photonic liquid crystal materials: synthesis and evaluation of new chiral thioindigo dopants designed to photomodulate the spontaneous polarization of ferroelectric liquid crystals
摘要:
由光致变色掺杂物 (R,R)-6,6′-bis(2-octyloxy)-5,5′-dinitrothioindigo 和 (R,R)-5,5′-dichloro-6,6′-bis(2-octyloxy)thioindigo 在波长 λ=514 和 532 nm 下照射,引起了铁电 S C * 液晶相自发极化 (P S ) 的增加,增幅范围从 1.4 到 4.0。P S 的这种增加是在不伴随 S C * 相不稳定化的情况下实现的,且与因顺-反光异构化导致的硫靛核心的横向偶极矩增加相一致。硫靛核心对 P S 的贡献是通过与手性侧链的立体极化耦合实现的,该耦合在硝基和氯取代基的存在下得到了增强。
Design and synthesis of novel 3-(benzo[d]oxazol-2-yl)-5-(1-(piperidin-4-yl)-1H-pyrazol-4-yl)pyridin-2-amine derivatives as selective G-protein-coupled receptor kinase-2 and -5 inhibitors
作者:Sung Yun Cho、Byung Ho Lee、Heejung Jung、Chang Soo Yun、Jae Du Ha、Hyoung Rae Kim、Chong Hak Chae、Jeong Hyun Lee、Ho Won Seo、Kwang-Seok Oh
DOI:10.1016/j.bmcl.2013.10.036
日期:2013.12
G-protein-coupled receptor kinase (GRK)-2 and -5 are emerging therapeutic targets for the treatment of cardiovascular disease. In our efforts to discover novel small molecules to inhibit GRK-2 and -5, a class of compound based on 3-(benzo[d]oxazol-2-yl)-5-(1-(piperidin-4-yl)-1H-pyrazol-4-yl) pyridin-2-amine was identified as a novel hit by high throughput screening campaign. Structural modification of parent benzoxazole scaffolds by introducing substituents on phenyl displayed potent inhibitory activities toward GRK-2 and -5. (C) 2013 Elsevier Ltd. All rights reserved.