171908-90-0Relevant academic research and scientific papers
Tertiary-Amine-Based Inhibitors of the Astacin Protease Meprin α
Tan, Kathrin,J?ger, Christian,Schlenzig, Dagmar,Schilling, Stephan,Buchholz, Mirko,Ramsbeck, Daniel
, p. 1619 - 1624 (2018)
Metalloproteinases of the astacin family are drawing ever increasing attention as potential drug targets. However, knowledge regarding inhibitors thereof is limited in most cases. Crucial for the development of metalloprotease inhibitors is high selectivi
Imidazolium-based polymer supported gadolinium triflate as a heterogeneous recyclable Lewis acid catalyst for Michael additions
Alleti, Ramesh,Oh, Woon Su,Perambuduru, Meher,Ramana,Prakash Reddy
, p. 3466 - 3470 (2008)
A heterogeneous Lewis acid catalytic system has been developed by incorporating gadolinium triflate on to poly[styrene-co-(1-((4-vinylphenyl)methyl)-3-methylimidazolium) tetrafluoroborate] (1-Gd(OTf)3), and the catalytic activity of this system has been examined for Michael additions of amines and thiols to α,β-unsaturated esters and acrylonitrile. The reactions proceed in moderate to excellent yields in the presence of catalytic system 1-Gd(OTf)3. The catalytic system could be efficiently recycled and reused.
Ceric ammonium nitrate catalyzed aza-Michael addition of aliphatic amines to α,β-unsaturated carbonyl compounds and nitriles in water
Varala, Ravi,Sreelatha, Nuvula,Adapa, Srinivas R.
, p. 1549 - 1553 (2006)
Ceric ammonium nitrate (3 mol%) efficiently catalyzes the aza-Michael reaction of amines with α,β-unsaturated carbonyl compounds in water to produce the corresponding β-amino carbonyl compounds in good to excellent yields (55-99%) for most of the compounds under mild conditions. The reaction is procedurally simple and displays limited chemoselectivity, as aromatic amines were found to be unreactive. Georg Thieme Verlag Stuttgart.
Cellulose-supported copper(0) catalyst for aza-Michael addition
Reddy, K. Rajender,Kumar, Nadakudity S.
, p. 2246 - 2250 (2006)
Cellulose-supported copper(0) efficiently catalyzes the aza-Michael reaction of N-nucleophiles, such as amines and imidazoles with α,β-unsaturated compounds to produce the corresponding β-amino compounds and N-substituted imidazoles in excellent yields. The reactions are facile and the recovered catalyst is used for several cycles with consistent activity. Georg Thieme Verlag Stuttgart.
Aza-Michael Reactions in Ionic Liquids. A Facile Synthesis of β-Amino Compounds
Yadav,Reddy,Basak,Narsaiah
, p. 988 - 989 (2003)
Electron-deficient olefins undergo smoothly aza-Michael reactions with a wide range of amines in ionic liquids in the absence of any acid catalyst to produce the corresponding β-amino compounds in excellent yields with high 1,4-selectivity. The recovered ionic liquids can be reused in subsequent reactions without loss of activity. Owing to the high polarity of ionic liquids, the enones show enhanced reactivity thereby reducing reaction times and improving the yields significantly.
Cu(acac)2 immobilized in ionic liquids: A recoverable and reusable catalytic system for aza-Michael reactions
Kantam, M. Lakshmi,Neeraja,Kavita,Neelima,Chaudhuri, Mihir K.,Hussain, Sahid
, p. 763 - 766 (2005)
Copper(II) acetylacetonate immobilized in ionic liquids efficiently catalyzes the aza-Michael reaction of amines with α,β-unsaturated carbonyl compounds to produce the corresponding β-amino carbonyl compounds with great alacrity in excellent yields. The reactions are far more facile than those reported earlier. The recovered ionic liquid phase containing the copper catalyst can be reused for several cycles with consistent activity.
Bio-heterogeneous Cu(0)NC@PHA for n-aryl/alkylation at room temperature
Jian Fui, Choong,Lutfor Rahman, Md,Musta, Baba,Sani Sarjadi, Mohd,Sarkar, Shaheen M.,Xin Ting, Tang
, (2021/06/28)
A pure cellulose was derived from waste fibre and it was chemically modified to a hydroxamic acid ligand. The poly(hydroxamic acid) was treated with an aqueous copper solution to afford the greenish stable five-membered copper complex; namely Cu(II)@PHA. Further, the Cu(II)@PHA was treated with a reducing agent hydrazine hydride to give brown colour cellulose supported copper nanocomplex (Cu(0)NC@PHA). The Cu(0)NC@PHA was characterised by ATR-FTIR, FE-SEM & EDS, TEM, ICP-OES, TGA, XRD and XPS analyses. The cellulose-based Cu(0)NC@PHA was used for the n-aryl/alkylation (Michael addition) reaction with a variety of α,β-unsaturated Michael acceptors to produce the corresponding n-aryl/alkyl products with an excellent yield at room temperature. The Cu(0)NC@PHA showed extraordinary stability and it was easily filtered out from the reaction mixture and may potentially recycled up to five times without loss of its original catalytic ability.
TRI-CYCLE COMPOUND AND APPLICATIONS THEREOF
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Paragraph 0301-0302; 0304, (2020/01/22)
Disclosed in the present invention are a compound represented by formula (I), a tautomer thereof or a pharmaceutically acceptable salt, and applications thereof in the preparation of drugs for treating HBV-related diseases.
BICYCLIC JAK INHIBITORS AND USES THEREOF
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Paragraph 000379, (2020/10/20)
Provided herein are compounds of Formulas (I), (II), (III), and (IV) and subformulas thereof, wherein the variables are defined herein. Also provided herein are pharmaceutical compositions comprising a compound of Formula (I), (II), (III), or (IV) and methods of using the compounds, e.g., in the treatment of immune disorders, inflammatory disorders, and cancer.
Design, Synthesis, and Biological Evaluation of Tetrahydroisoquinoline-Based Histone Deacetylase 8 Selective Inhibitors
Taha, Taha Y.,Aboukhatwa, Shaimaa M.,Knopp, Rachel C.,Ikegaki, Naohiko,Abdelkarim, Hazem,Neerasa, Jayaprakash,Lu, Yunlong,Neelarapu, Raghupathi,Hanigan, Thomas W.,Thatcher, Gregory R. J.,Petukhov, Pavel A.
supporting information, p. 824 - 829 (2017/08/16)
Histone deacetylase 8 (HDAC8) is a promising drug target for multiple therapeutic applications. Here, we describe the modeling, design, synthesis, and biological evaluation of a novel series of C1-substituted tetrahydroisoquinoline (TIQ)-based HDAC8 inhibitors. Minimization of entropic loss upon ligand binding and use of the unique HDAC8 "open" conformation of the binding site yielded a successful strategy for improvement of both HDAC8 potency and selectivity. The TIQ-based 3g and 3n exhibited the highest 82 and 55 nM HDAC8 potency and 330- and 135-fold selectivity over HDAC1, respectively. Selectivity over other class I isoforms was comparable or better, whereas inhibition of HDAC6, a class II HDAC isoform, was below 50% at 10 μM. The cytotoxicity of 3g and 3n was evaluated in neuroblastoma cell lines, and 3n displayed concentration-dependent cytotoxicity similar to or better than that of PCI-34051. The selectivity of 3g and 3n was confirmed in SH-SY5Y cells as both did not increase the acetylation of histone H3 and α-tubulin. Discovery of the novel TIQ chemotype paves the way for the development of HDAC8 selective inhibitors for therapeutic applications.
