- N-(1,3,4-oxadiazol-2-yl)benzamide analogs, bacteriostatic agents against methicillin- and vancomycin-resistant bacteria
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Various reports of multidrug-resistant bacteria that are immune to all available FDA-approved drugs demand the development of novel chemical scaffolds as antibiotics. From screening a chemical library, we identified compounds with antibacterial activity.
- Opoku-Temeng, Clement,Naclerio, George A.,Mohammad, Haroon,Dayal, Neetu,Abutaleb, Nader S.,Seleem, Mohamed N.,Sintim, Herman O.
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- Antibacterial Small Molecules That Potently Inhibit Staphylococcus aureus Lipoteichoic Acid Biosynthesis
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The rise of antibiotic resistance, especially in Staphylococcus aureus, and the increasing death rate due to multiresistant bacteria have been well documented. The need for new chemical entities and/or the identification of novel targets for antibacterial
- Naclerio, George A.,Karanja, Caroline W.,Opoku-Temeng, Clement,Sintim, Herman O.
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Read Online
- Identification of thiophene-benzenesulfonamide derivatives for the treatment of multidrug-resistant tuberculosis
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A series of thiophene-benzenesulfonamide derivatives was designed and synthesized by exploring the structure-activity relationship of lead compounds 2,3-disubstituted thiophenes 25a and 297F as antituberculosis agents, which displayed potent antimycobacterial activity against drug-susceptible and clinically isolated drug-resistant tuberculosis. In particular, compound 17b, which had improved activity (minimum inhibitory concentration of 0.023 μg/mL) compared with the lead compounds, displayed good intracellular antimycobacterial activity in macrophages with a reduction of 1.29 log10 CFU. A druggability evaluation indicated that compound 17b had favorable hepatocyte stability, low cytotoxicity, and low hERG channel inhibition. Moreover, compound 17b exhibited modest in vivo efficacy in an acute mouse model of tuberculosis. In addition, the molecular docking study elucidated the binding mode of compound 17b in the active site of DprE1. Therefore, compound 17b may be a promising antituberculosis lead for further research.
- Batt, Sarah M.,Besra, Gurdyal S.,Fu, Lei,Huang, Haihong,Li, Gang,Lu, Yu,Qin, Rongfei,Wang, Bin,Wang, Pengxu,Wang, Yanan,Wu, Chengwei
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- Structure-activity relationship studies in substituted sulfamoyl benzamidothiazoles that prolong NF-κB activation
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In the face of emerging infectious diseases, there remains an unmet need for vaccine development where adjuvants that enhance immune responses to pathogenic antigens are highly desired. Using high-throughput screens with a cell-based nuclear factor κB (NF-κB) reporter assay, we identified a sulfamoyl benzamidothiazole bearing compound 1 that demonstrated a sustained activation of NF-κB after a primary stimulus with a Toll-like receptor (TLR)-4 agonist, lipopolysaccharide (LPS). Here, we explore systematic structure–activity relationship (SAR) studies on compound 1 that indicated the sites on the scaffold that tolerated modification and yielded more potent compounds compared to 1. The selected analogs enhanced release of immunostimulatory cytokines in the human monocytic cell line THP-1 cells and murine primary dendritic cells. In murine vaccination studies, select compounds were used as co-adjuvants in combination with the Food and Drug Administration approved TLR-4 agonistic adjuvant, monophosphoryl lipid A (MPLA) that showed significant enhancement in antigen-specific antibody titers compared to MPLA alone. Additionally, our SAR studies led to identification of a photoaffinity probe which will aid the target identification and mechanism of action studies in the future.
- Shukla, Nikunj M.,Chan, Michael,Lao, Fitzgerald S.,Chu, Paul J.,Belsuzarri, Masiel,Yao, Shiyin,Nan, Jason,Sato-Kaneko, Fumi,Saito, Tetsuya,Hayashi, Tomoko,Corr, Maripat,Carson, Dennis A.,Cottam, Howard B.
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- VACCINE ADJUVANT
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Compounds useful as an adjuvant, e.g., formulas (I)-(VI) and uses thereof, for example, with immunogenic moieties or other adjuvants, are provided.
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Page/Page column 69
(2020/06/10)
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- Diaryl 2- amide-substituted thiophene imide ester compound as well as preparation method and application thereof (by machine translation)
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The invention also discloses a 2 - synthesis method thereof, and an application of the compound as an antibacterial agent, in the phthisis-caused by the bacterium, in particular to the, mycobacterium-induced infectious disease (especially (Tuberculosis,TB), mycobacterium- induced mycobacterium, tuberculosis), and (I) the invention, specifically relates to a pharmaceutical composition containing the compound of the present invention or, a R pharmaceutical composition comprising the compound of the present invention. 1 , R2 , R3 , R4 , R5 As described Y in the present invention. as described in the specification, the present invention is directed, to the preparation of novel compounds, having an anti-mycobacterial activity as potential, new drug (s) for the treatment (TB) or preventative treatment of infectious diseases, consisting of M. tuberculosis, in particular phthisis- caused by tubercular mycobacteria, while being useful in overcoming the problems associated with drug resistance. (by machine translation)
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Paragraph 0357; 0361; 0364-0365; 0401; 0405; 0408-0409
(2020/02/17)
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- COMPOUNDS HAVING ANTIBACTERIAL ACTIVITY
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The present invention relates to compounds of formula (I) and their uses. In particular, though not exclusively, it concerns heterocyclic compounds that inhibit the biogenesis of adhesive pili in Gram- negative bacteria, and their use in the prevention or
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Page/Page column 110
(2014/11/13)
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- HISTAMINE H3 RECEPTOR AGENTS, PREPARATION AND THERAPEUTIC USES
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The present invention discloses novel compounds of Formula I or pharmaceutically acceptable salts thereof which have histamine-H3 receptor antagonist or inverse agonist activity, as well as methods for preparing such compounds. In another embodiment, the
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Page/Page column 34
(2010/11/25)
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- Discovery and initial development of a novel class of antibacterials: Inhibitors of Staphylococcus aureus transcription/translation
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The novel bacterial transcription/translation (TT) inhibitor 1 was identified through a combination of high throughput screening and exploratory medicinal chemistry. Initial optimization of the anthranilic acid moiety and sulfonamide amine diversity was accomplished via 1- and two-dimensional solution phase libraries, resulting in an improvement in the MIC of the lead from 64 to 8 μg/mL (compound 4l). Subsequent modification of the central aromatic ring and further refinement of the sulfonamide amines required the development of a solid phase route on Wang resin. The resulting libraries generated a number of potent antibacterials with MICs of ≤1 μg/mL (e.g., 10b, 12, and 13). During the course of this work, it became apparent that the antibacterial activity of the series is not fully correlated with TT inhibition, suggesting that at least one additional mechanism of action is operative.
- Larsen, Scott D.,Hester, Matthew R.,Craig Ruble,Kamilar, Gregg M.,Romero, Donna L.,Wakefield, Brian,Melchior, Earline P.,Sweeney, Michael T.,Marotti, Keith R.
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p. 6173 - 6177
(2007/10/03)
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