Unsaturated Mo in Mo<sub>4</sub>O<sub>4</sub>N<sub>3</sub> for efficient catalytic transfer hydrogenation of nitrobenzene using stoichiometric hydrazine hydrate
作者:Shicheng Luo、Yu Long、Kun Liang、Jiaheng Qin、Yi Qiao、Jing Li、Guangxue Yang、Jiantai Ma
DOI:10.1039/d1gc02647j
日期:——
Transferhydrogenation of nitroarenes to the corresponding anilines using hydrazine hydrate and non-noble metal catalysts has already been widely studied. However, the toxicity resulting from excess hydrazine hydrate and the high reaction temperature limit its industrial application. Herein, a novel N-doped molybdenum oxide compound (Mo4O4N3) was in situ prepared from g-C3N4 and (NH4)6Mo7O24·4H2O (AHM)
已经广泛研究了使用水合肼和非贵金属催化剂将硝基芳烃氢化成相应的苯胺。然而,过量的水合肼导致的毒性和高反应温度限制了其工业应用。在此,一种新型的掺杂N氧化钼化合物(莫4 ø 4 Ñ 3)为在原位从GC制备3 Ñ 4和(NH 4)6沫7 ö 24 ·4H 2 O(AHM)。制备的 Mo 4 O 4 N 3使用化学计量摩尔比的水合肼(–NO 2 : N 2 H 4 ·H 2 O = 1: 1.5)在室温下放置 50 分钟,可以实现苯胺的 99% 产率。机理实验和表征技术表明,Mo 4 O 4 N 3中不饱和Mo的酸性位点可以有效地激活N 2 H 4分子,形成活性氢物种,用于硝基芳烃的催化转移加氢,而不会产生有害的NH 3。此外,Mo 4 O 4 N 3在无溶剂的大规模反应中仍表现出优异的催化性能。这项工作可能为芳胺生产提供一种可行且有效的策略。
[EN] INHIBITORS OF HEPATITIS C VIRUS REPLICATION<br/>[FR] INHIBITEURS DE LA RÉPLICATION DU VIRUS DE L'HÉPATITE C
申请人:MERCK SHARP & DOHME
公开号:WO2010111483A1
公开(公告)日:2010-09-30
The present invention relates to compounds of formula (I) that are useful as hepatitis C virus (HCV) NS5A inhibitors, the synthesis of such compounds, and the use of such compounds for inhibiting HCV NS5A activity, for treating or preventing HCV infections and for inhibiting HCV viral replication and/or viral production in a cell-based system.
Synthesis and Structure–Activity Relationship Studies of 4-((2-Hydroxy-3-methoxybenzyl)amino)benzenesulfonamide Derivatives as Potent and Selective Inhibitors of 12-Lipoxygenase
作者:Diane K. Luci、J. Brian Jameson、Adam Yasgar、Giovanni Diaz、Netra Joshi、Auric Kantz、Kate Markham、Steve Perry、Norine Kuhn、Jennifer Yeung、Edward H. Kerns、Lena Schultz、Michael Holinstat、Jerry L. Nadler、David A. Taylor-Fishwick、Ajit Jadhav、Anton Simeonov、Theodore R. Holman、David J. Maloney
DOI:10.1021/jm4016476
日期:2014.1.23
demonstrated role in skin diseases, diabetes, platelet hemostasis, thrombosis, and cancer. Herein, we report the identification and medicinal chemistry optimization of a 4-((2-hydroxy-3-methoxybenzyl)amino)benzenesulfonamide-based scaffold. Top compounds, exemplified by 35 and 36, display nM potency against 12-LOX, excellent selectivity over related lipoxygenases and cyclooxygenases, and possess favorable
The present invention relates to bioconjugates and the delivery of bioactive agents which are preferably targeted for site-specific release in cells, tissues or organs. More particularly, this invention relates to bioconjugates which comprise a bioactive agent and an organocobalt complex. The bioactive agent is covalently bonded directly or indirectly to the cobalt atom of the organocobalt complex. The bioactive agent is released from the bioconjugate by the cleavage of the covalent bond between the bioactive agent and the cobalt atom in the organocobalt complex. The cleavage may occur as a result of normal displacement by cellular nucleophiles or enzymatic action, but is preferably caused to occur selectively as a predetermined release site by application of an external signal. The external signal may be light or photoexcitation, i.e. photolysis, or it may be ultrasound, i.e. sonolysis. Further, if the photolysis takes place in the presence of a magnetic field surrounding the release site, the release of the bioactive agent into surrounding healthy tissue is minimized.
Faserreaktive Chrom- oder Kobaltkomplexe, deren Herstellung und Verwendung
申请人:CIBA-GEIGY AG
公开号:EP0159962A2
公开(公告)日:1985-10-30
Die Erfindung betrifft Chrom- oder Kobaltkomplexe der Formel
worin A der Rest eines dicyclisch metallisierbaren Azo- oder Azomethinfarbstoffes, B der Rest einer dreizähnigen, bianionischen, komplexbildenden, organischen Verbindung, die eine an dem Chrom- oder Kobaltkomplex.beteiligte
-Gruppe enthält, X ein faserreaktiver Rest, Me ein Chrom-oder Kobaltatom, Ka ein Kation und m = 1, 2, 3 oder 4 ist, sowie ein Verfahren zur Herstellung der Chrom- oder Kobaltkomplexe der Formel (1) und deren Verwendung zum Färben von Materialien faseriger Struktur, insbesondere Textilmaterialien.