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Chemical Structure| 99-92-3 Chemical Structure| 99-92-3
Chemical Structure| 99-92-3

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CAS No.: 99-92-3

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Synonyms: p-Aminoacetophenone

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Agarwal, Devesh S. ; Beteck, Richard M. ; Ilbeigi, Kayhan ; Caljon, Guy ; Legoabe, Lesetja J. ;

Abstract: A library of imidazo[1,2-a]pyridine-appended chalcones were synthesized and characterized using 1H NMR,13C NMR and HRMS. The synthesized analogs were screened for their antikinetoplastid activity against Trypanosoma cruzi, Trypanosoma brucei brucei, Trypanosoma brucei rhodesiense and Leishmania infantum. The analogs were also tested for their cytotoxicity activity against human lung fibroblasts and primary mouse macrophages. Among all screened derivatives, (E)-N-(4-(3-(2-chlorophenyl)acryloyl)phenyl)imidazo[1,2-a]pyridine-2-carboxamide was found to be the most active against T. cruzi and T. b. brucei exhibiting IC50 values of 8.5 and 1.35 μM, resp. Against T. b. rhodesiense, (E)-N-(4-(3-(4-bromophenyl)acryloyl)phenyl)imidazo[1,2-a]pyridine-2-carboxamide was found to be the most active with an IC50 value of 1.13 μM. All synthesized active analogs were found to be non-cytotoxic against MRC-5 and PMM with selectivity indexes of up to more than 50.

Keywords: antikinetoplastid ; ; drug likeliness properties ; ; neglected tropical diseases (NTDs) ; Trypanosoma brucei brucei ; Trypanosoma brucei rhodesiense

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Klaudia T. Angula ; Lesetja J. Legoabe ; Audrey Jordaan ; Digby F. Warner ; Richard M. Beteck ;

Abstract: A recent study identified quinolone-based thiosemicarbazone with an MIC90 value of 2?μM against Mycobacterium tuberculosis (Mtb). Herein, we report further optimization of the previous hit, which led to the discovery of quinolone-tethered aminoguanidine molecules with generally good antitubercular activity. Compounds 7f and 8e emerged as the hits of the series with submicromolar antitubercular activity, exhibiting MIC90 values of 0.49/0.90 and 0.49/0.60?μM, respectively, in the 7H9 CAS GLU Tx medium. This shows a fivefold increase in antitubercular activity compared to the previous study. Target compounds were also screened against ESKAPE (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) pathogens. However, the series generally exhibited poor antibacterial activities, with only compounds 8d and 8e demonstrating >50% growth inhibition of Staphylococcus aureus and Pseudomonas aeruginosa at 32?μg/ml. The compounds displayed selective antitubercular activity as they showed no cytotoxicity effects against two noncancerous human cell lines. In silico studies predict 7f to have good solubility, no inhibitory effect on cytochrome P450 isoenzymes, and to be a non-pan-assay interfering compound.

Keywords: tuberculosis ; ESKAPE pathogens ; aminoguanidine ; quinolones ; thiosemicarzone

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Jang, Mingyeong ; Lim, Taeho ; Park, Byoung Yong ; Han, Min Su ;

Abstract: In this study, we developed a metal-free and highly chemoselective method for the reduction of aromatic nitro compounds. This reduction was performed using tetrahydroxydiboron [B2(OH)4] as the reductant and 4,4'-bipyridine as the organocatalyst and could be completed within 5 min at room temperature. Under optimal conditions, nitroarenes with sensitive functional groups, such as vinyl, ethynyl, carbonyl, and halogen, were converted into the corresponding anilines with excellent selectivity while avoiding the undesirable reduction of the sensitive functional groups.

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Product Details of 4'-Aminoacetophenone

CAS No. :99-92-3
Formula : C8H9NO
M.W : 135.16
SMILES Code : CC(C1=CC=C(N)C=C1)=O
Synonyms :
p-Aminoacetophenone
MDL No. :MFCD00007896
InChI Key :GPRYKVSEZCQIHD-UHFFFAOYSA-N
Pubchem ID :7468

Safety of 4'-Aminoacetophenone

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338
 

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