Methods of inhibiting the replication of influenza viruses in a biological sample or patient, of reducing the amount of influenza viruses in a biological sample or patient, and of treating influenza in a patient, comprises administering to said biological sample or patient an effective amount of a compound represented by Structural Formula (I):
or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A compound is represented by Structural Formula (IA) or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A pharmaceutical composition comprises an effective amount of such a compound or pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, adjuvant or vehicle.
The first cationic titanium catalyst system for the intermolecular hydroaminoalkylation of alkenes with various tertiary alkylamines is presented. Corresponding reactions which involve the addition of the α‐C−H bond of a tertiary amine across the C−C double bond of an alkene take place at temperatures close to room temperature with excellent regioselectivity to deliver the branched products exclusively
Efficient and recyclable ruthenium catalysts were synthesized from readily available polystyrene‐ or silica‐supported phosphine ligands. Catalysts bound to the polymer support through an ether linkage showed good to excellent activity towards the N‐alkylation of primary and secondary amines to afford the alkylated products in 62–99 % yield at 120–140 °C. The supported phosphine ligand/ruthenium ratio
room temperature was achieved using the bimetallic catalyst. The mild reaction conditions enable highly selective hydrogenation of various amides to the corresponding amines, while inhibiting arene hydrogenation. Catalyst characterization showed that the origin of the catalytic activity for the bimetallic catalyst is the oxophilic V-decorated Pt nanoparticles, which are 2 nm in diameter.
酰胺加氢成胺是重要的反应,但是需要高温和H 2压力是一个问题。在温和的反应条件下(低于30 bar H 2和70°C)有效的催化剂尚未见报道。在此,通过使用Pt-V双金属催化剂首次实现了酰胺的温和氢化。酰胺氢化,在70°C下1 bar H 2或5 bar H 2下使用双金属催化剂达到室温。温和的反应条件能够在抑制芳烃氢化的同时,将各种酰胺高度选择性地氢化为相应的胺。催化剂表征表明,双金属催化剂催化活性的起源是亲氧性的V-修饰的Pt纳米颗粒,其直径为2 nm。
Heterogeneous Ru/TiO<sub>2</sub> for hydroaminomethylation of olefins: multicomponent synthesis of amines
作者:Jinghua An、Zhuyan Gao、Yehong Wang、Zhixin Zhang、Jian Zhang、Lu Li、Bo Tang、Feng Wang
DOI:10.1039/d1gc00113b
日期:——
Synthesizing amines via the hydroaminomethylation (HAM) reaction of olefins, a multicomponent reaction, has been regarded as one of the most attractive methods compared with the traditional methods considering the atom economy and environmental friendliness. However, the use of homogeneous catalysts, complex ligands containing diphosphine or nitrogen, and base or acid additives has severely hampered
合成胺通过烯烃,多组分反应的hydroAMinomethylation(HAM)反应,被认为是与考虑到原子经济性和环境友好性的传统方法相比,最有吸引力的方法之一。然而,均相催化剂,含有二膦或氮的复杂配体以及碱或酸添加剂的使用严重地阻碍了这些方法的使用。在本文中,开发了没有任何添加剂的有效的异质Ru / TiO 2催化的烯烃HAM反应。可以从包括芳族和脂族烯烃在内的烯烃中成功地获得包括仲胺和叔胺在内的各种胺。系统研究表明,Ruδ +的电子密度较低Ru / TiO 2的酸位较高,导致烯烃的高HAM反应活性。最重要的是,硝基苯衍生物也可以优良的产率通过Ru / TiO 2转化为相应的产物。