流行性感冒是由甲型流感病毒(IAV)引起的对公共健康的持续重大威胁。IAVs按表面蛋白血凝素(HA)和神经氨酸酶(NA)进行分类,它们都是药物发现的基本靶标。尽管人们经常从人或禽流感病毒中鉴定出NA抑制剂奥司他韦耐药株,这一点引起了极大的关注,但流感HA的结构和功能表征却为新的抗病毒治疗带来了希望。在这项研究中,我们探索了基于频胺的抗病毒药物的构效关系(SAR),并发现了强效抑制剂M090对抗耐金刚烷胺的病毒(包括2009 H1N1大流行毒株)和耐奥司他韦的病毒。作用机理的研究,特别是溶血抑制作用,表明M090靶向HA流感,它占据了HA 2结构域的高度保守的口袋,并通过在构象重排过程中“锁定” HA 2的弯曲状态来抑制病毒介导的膜融合。这项工作在HA蛋白中提供了新的结合位点,表明该口袋可能是广谱抗A型流感药物设计和开发的有希望的目标。
[EN] FORMYLTHIOPHENES AND THEIR USE IN FLAVOR AND FRAGRANCE COMPOSITIONS [FR] FORMYLTHIOPHÈNES ET LEUR UTILISATION DANS DES COMPOSITIONS D'ARÔME ET DE PARFUM
[EN] FORMYLTHIOPHENES AND THEIR USE IN FLAVOR AND FRAGRANCE COMPOSITIONS<br/>[FR] FORMYLTHIOPHÈNES ET LEUR UTILISATION DANS DES COMPOSITIONS D'ARÔME ET DE PARFUM
申请人:INT FLAVORS & FRAGRANCES INC
公开号:WO2017079368A1
公开(公告)日:2017-05-11
The present invention is directed to novel organoleptic compounds, a process of augmenting, enhancing or imparting taste to a material selected from the group consisting of a foodstuff, a chewing gum, a dental product, an oral hygiene product and a medicinal product comprising the step of incorporating an olfactory acceptable amount of such novel organoleptic compounds, and a process of improving, enhancing or modifying a fragrance formulation through the addition of an olfactory acceptable amount of such novel organoleptic compounds.
Fluorine containingconjugatedpolymers have been widely applied in high performance organicsolarcells, but their use in field-effect transistors is still quite limited. In this work, a conjugatedpolymer PTFBTV based on difluorobenzothiadiazole (DFBT) and dithiophene was synthesized, utilizing multiple vinylene as linkers. The polymer exhibits a relatively high hole mobility up to 2.0 cm2 V−1 s−1
含氟共轭聚合物已被广泛应用于高性能有机太阳能电池中,但其在场效应晶体管中的应用仍然非常有限。在这项工作中,利用多个亚乙烯基作为接头,合成了基于二氟苯并噻二唑(DFBT)和二噻吩的共轭聚合物PTFBTV。聚合物显示出较高的空穴迁移率,最高可达2.0 cm 2 V -1 s -1与报道的基于DFBT的低聚噻吩基聚合物相比,它的结构复杂性要简单得多。聚合物薄膜表现出典型的“面对”分子取向。其单体的单晶显示氟与相邻质子之间存在非共价分子内接触,从而增强了骨架的共面性。同时,还观察到分子间F⋯F接触,这可能导致固态PTFBTV产生相当分散的层状结晶。
Detty, Michael R.; Hays, David S., Heterocycles, 1995, vol. 40, # 2, p. 925 - 938
作者:Detty, Michael R.、Hays, David S.
DOI:——
日期:——
Synthesis of Trithienylenevinylenes Bearing Dithiocarbonate Groups and Their Dithiophene−Tetrathiafulvalene Derivatives
作者:Xin Chen、Norma R. de Tacconi、Ronald L. Elsenbaumer
DOI:10.1021/jo901574v
日期:2009.12.4
A series of conjugated trithienylenevinylene compounds bearing dithiocarbonate groups were prepared by Wittig reactions. Dithiophene-tetrithiafulvalene (DT-TTF) derivatives can be readily prepared through trialkylphosphite-mediated coupling reactions of these trithienylenevinylene materials. All compounds were characterized by NMR, FT-IR, UV-vis, and mass spectroscopy.
FORMYLTHIOPHENES AND THEIR USE IN FLAVOR AND FRAGRANCE COMPOSITIONS