- Design, synthesis, and evaluation of substituted 2-acylamide-1,3-benzo[d]zole analogues as agents against MDR- and XDR-MTB
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N-(5-Chlorobenzo[d]oxazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamideox-amide has been identified as a potent inhibitor of Mtb H37Rv, with a minimum inhibitory concentration (MIC) of 0.42 μM. In this study, a series of substituted 2-acylamide-1,3-zole analogues were designed and synthesized, and their anti-Mtb activities were analyzed. In total, 17 compounds were found to be potent anti-Mtb agents, especially against the MDR- and XDR-MTB strains, with MIC values 10 μM. These analogues can inhibit both drug-sensitive and drug-resistant Mtb. Four representative compounds were selected for further profiling, and the results indicate that compound 18 is acceptably safe and has favorable pharmacokinetic (PK) properties. In addition, this compound displays potent activity against Gram-positive bacteria, with MIC values in the range of 1.48–11.86 μM. The data obtained herein suggest that promising anti-Mtb candidates may be developed via structural modification, and that further research is needed to explore other compounds.
- Li, Dongsheng,Liu, Chao,Jiang, Xinhai,Lin, Yuan,Zhang, Jing,Li, Yan,You, Xuefu,Jiang, Wei,Chen, Minghua,Xu, Yanni,Si, Shuyi
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- Cyanoguanidine as a versatile, eco-friendly and inexpensive reagent for the synthesis of 2-aminobenzoxazoles and 2-guanidinobenzoxazoles
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An effective, easy-to-handle, safe and inexpensive protocol is reported for the synthesis of 2-aminobenzoxazoles under Lewis acid activation, utilising cyanoguanidine as the cyanating reagent. An optimized procedure for the synthesis of 2-guanidinobenzoxazole and novel derivatives is also described.
- Grytsai, Oleksandr,Druzhenko, Tetiana,Demange, Luc,Ronco, Cyril,Benhida, Rachid
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supporting information
p. 1642 - 1645
(2018/03/29)
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- ANTIBIOTIC COMPOUNDS
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The present invention relates to antibiotic compounds of formula (I), to compositions containing these compounds and to methods of treating bacterial diseases and infections using the compounds. The compounds find application in the treatment of infection with, and diseases caused by, Gram-positive and/or Gram-negative bacteria, and in particular in the treatment of infection with, and diseases caused by, Neisseria gonorrhoeae.
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Page/Page column 110; 111
(2018/03/25)
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- ANTIBIOTIC COMPOUNDS, PHARMACEUTICAL FORMULATIONS THEREOF AND METHODS AND USES THEREFOR
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The present invention relates to compounds of formula (I) wherein G1 to G8 are as defined herein. The compounds are PK inhibitors and as such represent a new approach to treating pathogenic infections, including multidrug resistant pathogens. Disclosed herein are the compounds of formula (I), pharmaceutical compositions comprising the compounds of formula (I) and their use in the treatment of antimicrobial infection. (Formula (1))
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Page/Page column 290
(2017/06/30)
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- Electrochemical intramolecular c-h amination: Synthesis of benzoxazoles and benzothiazoles
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A new method for metal-free intramolecular C-H amination has been developed. Electrochemical oxidation of 2-pyrimidyloxybenzenes and 2-pyrimidylthiobenzenes, which can be easily prepared from phenols and thiophenols, respectively, followed by the treatment of the resulting pyrimidinium ions with piperidine gives 2-aminobenzoxazoles and 2-aminobenzothiazoles, respectively.
- Morofuji, Tatsuya,Shimizu, Akihiro,Yoshida, Jun-Ichi
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p. 3211 - 3214
(2015/03/05)
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- A metal-free oxidative amination of benzoxazoles with primary amines and ammonia
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An efficient synthesis of 2-aminobenzoxazoles is described by a direct oxidative amination of unfunctionalized benzoxazoles with primary amines. The reaction could be performed in the absence of transition metals by using catalytic amounts of a quaternary ammonium iodide and tert-butylhydroperoxide as a cheap and easy-to-handle co-oxidant. In addition to primary amines, aqueous solutions of NH3 were used to introduce a primary amine group into the heterocyclic core. Georg Thieme Verlag Stuttgart. New York.
- Kloeckner, Ulrich,Weckenmann, Nicole M.,Nachtsheim, Boris J.
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supporting information; experimental part
p. 97 - 100
(2012/02/03)
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- Transition metal mediated process
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This invention relates to a transition metal mediated process for the preparation of optionally substituted 2-amino-benzoxazoles and or 2-amino-benzimidazoles, which are useful as therapeutic agents or as intermediates in the synthesis of therapeutic agents.
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- Transition metal mediated process
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This invention relates to a transition metal mediated process for the preparation of optionally substituted 2-amino-benzoxazoles and or 2-amino-benzimidazoles, which are useful as therapeutic agents or as intermediates in the synthesis of therapeutic agents.
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