- 5-Keto-3-cyano-2,4-diaminothiophenes as selective maternal embryonic leucine zipper kinase inhibitors
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Maternal embryonic leucine zipper kinase (MELK) is involved in several key cellular processes and displays increased levels of expression in numerous cancer classes (colon, breast, brain, ovary, prostate and lung). Although no selective MELK inhibitors ha
- Boutard, Nicolas,Sabiniarz, Aleksandra,Czerwińska, Klaudia,Jarosz, Ma?gorzata,Cierpich, Anna,Kolasińska, Ewa,Wiklik, Katarzyna,Gluza, Karolina,Commandeur, Claude,Buda, Anna,Stasiowska, Agata,Bobowska, Aneta,Galek, Mariusz,Fabritius, Charles-Henry,Bugaj, Marta,Palacz, Edyta,Mazan, Andrzej,Zar?bski, Adrian,Krawczyńska, Karolina,?urawska, Ma?gorzata,Zawadzki, Przemys?aw,Milik, Mariusz,W?grzyn, Paulina,Dobrzańska, Monika,Brzózka, Krzysztof,Kowalczyk, Piotr
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Read Online
- Based on isoxazole substitution of benzamide derivatives and anti-prostate cancer drug applications
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The present invention discloses a class (I), formula (II) structure based on isoxazole substituted benzamide derivatives and antiprostate cancer drug applications, such isoxazole substituted benzamide derivatives, can effectively inhibit the activity of a
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Paragraph 0065; 0073-0074
(2022/01/10)
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- Usnic Acid Enaminone-Coupled 1,2,3-Triazoles as Antibacterial and Antitubercular Agents
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(+)-Usnic acid, a product of secondary metabolism in lichens, has displayed a broad range of biological properties such as antitumor, antimicrobial, antiviral, anti-inflammatory, and insecticidal activities. Interested by these pharmacological activities and to tap into its potential, we herein present the synthesis and biological evaluation of new usnic acid enaminone-conjugated 1,2,3-triazoles 10-44 as antimycobacterial agents. (+)-Usnic acid was condensed with propargyl amine to give usnic acid enaminone 8 with a terminal ethynyl moiety. It was further reacted with various azides A1-A35 under copper catalysis to give triazoles 10-44 in good yields. Among the synthesized compounds, saccharin derivative 36 proved to be the most active analogue, inhibiting Mycobacterium tuberculosis (Mtb) at an MIC value of 2.5 μM. Analogues 16 and 27, with 3,4-difluorophenacyl and 2-acylnaphthalene units, respectively, inhibited Mtb at MIC values of 5.4 and 5.3 μM, respectively. Among the tested Gram-positive and Gram-negative bacteria, the new derivatives were active on Bacillus subtilis, with compounds 18 [3-(trifluoromethyl)phenacyl] and 29 (N-acylmorpholinyl) showing inhibitory concentrations of 41 and 90.7 μM, respectively, while they were inactive on the other tested bacterial strains. Overall, the study presented here is useful for converting natural (+)-usnic acid into antitubercular and antibacterial agents via incorporation of enaminone and 1,2,3-triazole functionalities.
- Bangalore, Pavan K.,Vagolu, Siva K.,Bollikanda, Rakesh K.,Veeragoni, Dileep K.,Choudante, Pallavi C.,Misra, Sunil,Sriram, Dharmarajan,Sridhar, Balasubramanian,Kantevari, Srinivas
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supporting information
p. 26 - 35
(2020/01/03)
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- PYRROLIDINE DERIVATIVES AS PPAR AGONISTS
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The present invention discloses a class of pyrrolidine derivatives as PPAR agonist, and their use for the treatment of some diseases of PPAR receptor-associated pathways (such as nonalcoholic steatohepatitis and concurrent fibrosis, insulin resistance, primary biliary cholgangitis, dyslipidenmia, hyperlipidemia, hypercholesterolemia, atherosclerosis, hypertriglyceridemia, cardiovascular disease, obesity or the like). In particular, the present invention discloses a compound represented by Formula (I) or a pharmaceutically acceptable salt thereof.
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Paragraph 0575-0578
(2019/08/02)
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- Synthesis and antifungal activity of novel oxazolidin-2-one-linked 1,2,3-triazole derivatives
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Novel oxazolidin-2-one-linked 1,2,3-triazole derivatives (4a-k) were synthesized by straightforward and versatile azide-enolate (3 + 2) cycloaddition. The series of compounds was screened for antifungal activity against four filamentous fungi as well as six yeast species of Candida spp. According to their efficiency and breadth of scope, they can be ordered as 4k > 4d > 4h > 4a, especially in relation to the activity displayed against Candida glabrata ATCC-34138, Trichosporon cutaneum ATCC-28592 and Mucor hiemalis ATCC-8690, i.e. compounds 4d, 4h and 4k showed excellent activity against C. glabrata (MIC 0.12, 0.25 and 0.12 μg mL-1, respectively), better than that of itraconazole (MIC 1 μg ml-1). The activity of compound 4d (MIC = 2 μg mL-1) was higher than that observed for the standard antifungal drug (MIC = 8 μg mL-1) against Trichosporon cutaneum, while compound 4k displayed an excellent antimycotic activity against Mucor hiemalis (MIC = 2 μg mL-1vs. 4 μg mL-1 for itraconazole). In addition, we describe herein a novel mild and eco-friendly synthetic protocol for obtaining β-ketosulfones (adducts to afford compounds 4a-k) from α-brominated carbonyls in an aqueous nanomicellar medium at room temperature.
- Ramírez-Villalva, Alejandra,González-Calderón, Davir,Rojas-García, Roxana I.,González-Romero, Carlos,Tamaríz-Mascarúa, Joaquín,Morales-Rodríguez, Macario,Zavala-Segovia, Nieves,Fuentes-Benítes, Aydeé
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p. 2258 - 2262
(2017/12/26)
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- PYRAZOLOPYRIDINE PYRAZOLOPYRIMIDINE AND RELATED COMPOUNDS
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In one aspect this invention relates generally to compounds of Formula: and sub-formulas thereof, or a tautomer of each thereof, a pharmaceutically acceptable salt of each thereof, or a pharmaceutically acceptable solvate of each of the foregoing, where X1, L1, L3, and R3 are described herein.
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Paragraph 1198; 1199
(2015/11/25)
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- Molecular recognition at the active site of factor Xa: Cation-π Interactions, stacking on planar peptide surfaces, and replacement of structural water
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Factor Xa, a serine protease from the blood coagulation cascade, is an ideal enzyme for molecular recognition studies, as its active site is highly shape-persistent and features distinct, concave sub-pockets. We developed a family of non-peptidic, small-molecule inhibitors with a central tricyclic core orienting a neutral heterocyclic substituent into the S1 pocket and a quaternary ammonium ion into the aromatic box in the S4 pocket. The substituents were systematically varied to investigate cation-π interactions in the S4 pocket, optimal heterocyclic stacking on the flat peptide walls lining the S1 pocket, and potential water replacements in both the S1 and the S4 pockets. Structure-activity relationships were established to reveal and quantify contributions to the binding free enthalpy, resulting from single-atom replacements or positional changes in the ligands. A series of high-affinity ligands with inhibitory constants down to Ki=2nM were obtained and their proposed binding geometries confirmed by X-ray co-crystal structures of protein-ligand complexes. Factor Xa is an ideal enzyme to undertake molecular recognition studies at atomic level resolution as its active site is completely conserved in complexes with designed ligands. Cation-π interactions, water replacements, and stacking interactions with flat peptide fragments were investigated, revealing large changes in binding affinity resulting from single-atom mutations or positional shifts of heteroatoms in the ligands. Copyright
- Salonen, Laura M.,Holland, Mareike C.,Kaib, Philip S. J.,Haap, Wolfgang,Benz, J?rg,Mary, Jean-Luc,Kuster, Olivier,Schweizer, W. Bernd,Banner, David W.,Diederich, Fran?ois
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supporting information; experimental part
p. 213 - 222
(2012/03/09)
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- CHEMICAL COMPOUNDS
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Compounds of formula (I):wherein variable groups are as defined within; for use in the inhibition of 11betaHSD1 are described
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- Synthesis and evaluation of a novel series of pyrrolizine derivatives as dual cyclooxygenase-1 and 5-lipoxygenase inhibitors
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The aim of our study was to investigate structure activity relationship following the replacement of the 6-phenyl substituent at the 6,7-diaryl-2,3-dihydropyrrolizine template by various heteroaromatic residues. In this context we developed a new, efficient, and highly sensitive test method for the screening of dual cyclooxygenase-1 (COX-1) and 5-lipoxygenase (5-LOX) inhibitors. We used human platelets as a source of COX-1 and human PMNLs as a source of 5-LOX. Both cell types were isolated from the same volume of blood. PGE2 and LTB4 respectively were determined by highly selective and sensitive ELISA kits, using monoclonal antibodies. For a single determination at most 0.5 mL whole blood is needed.
- Laufer, Stefan,Striegel, Hans-Guenter,Neher, Karola,Zechmeister, Pia,Donat, Cornelia,Stolingwa, Katrin,Baur, Sibylle,Tries, Susanne,Kammermeier, Thomas,Dannhardt, Gerd,Kiefer, Werner
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p. 307 - 312
(2007/10/03)
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- Thienylpyrrole fungicidal agents
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There are provided fungicidal thienyl- and furylpyrrole compounds of formula I STR1 Further provided are compositions and methods comprising those compounds for the protection of plants from fungal infestation and disease.
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- Thienyl-and furylpyrrole insecticidal and acaricidal agents
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There are provided thienyl- and furylpyrrole compounds of formula I STR1 and their use for the control of insects and acarina. Further provided are compositions and methods comprising those compounds for the protection of plants from attack by insects and acarina.
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