35318-15-1Relevant academic research and scientific papers
Identification of a bacteria-produced benzisoxazole with antibiotic activity against multi-drug resistant Acinetobacter baumannii
Deering, Robert W.,Whalen, Kristen E.,Alvarez, Ivan,Daffinee, Kathryn,Beganovic, Maya,LaPlante, Kerry L.,Kishore, Shreya,Zhao, Sijing,Cezairliyan, Brent,Yu, Shen,Rosario, Margaret,Mincer, Tracy J.,Rowley, David C.
, p. 370 - 380 (2021/02/22)
The emergence of multi-drug resistant pathogenic bacteria represents a serious and growing threat to national healthcare systems. Most pressing is an immediate need for the development of novel antibacterial agents to treat Gram-negative multi-drug resistant infections, including the opportunistic, hospital-derived pathogen, Acinetobacter baumannii. Herein we report a naturally occurring 1,2-benzisoxazole with minimum inhibitory concentrations as low as 6.25 μg ml?1 against clinical strains of multi-drug resistant A. baumannii and investigate its possible mechanisms of action. This molecule represents a new chemotype for antibacterial agents against A. baumannii and is easily accessed in two steps via de novo synthesis. In vitro testing of structural analogs suggest that the natural compound may already be optimized for activity against this pathogen. Our results demonstrate that supplementation of 4-hydroxybenzoate in minimal media was able to reverse 1,2-benzisoxazole’s antibacterial effects in A. baumannii. A search of metabolic pathways involving 4-hydroxybenzoate coupled with molecular modeling studies implicates two enzymes, chorismate pyruvate-lyase and 4-hydroxybenzoate octaprenyltransferase, as promising leads for the target of 3,6-dihydroxy-1,2-benzisoxazole.
Benzoic hydroxamate-based iron complexes as model compounds for humic substances: Synthesis, characterization and algal growth experiments
Orlowska, Ewelina,Roller, Alexander,Wiesinger, Hubert,Pignitter, Marc,Jirsa, Franz,Krachler, Regina,Kandioller, Wolfgang,Keppler, Bernhard K.
, p. 40238 - 40249 (2016/05/24)
A series of monomeric and dimeric FeIII complexes bearing benzoic hydroxamates as O,O-chelates has been prepared and characterized by elemental analysis, IR spectroscopy, UV-Vis spectroscopy, electrospray ionization mass spectrometry (ESI-MS), cyclic voltammetry, EPR spectroscopy and for some examples by X-ray diffraction analysis. The stability of the synthesized complexes in pure water and seawater was monitored over 24 h by means of UV-Vis spectrometry. The ability to release iron from the synthesized model complexes has been investigated with algae growth experiments.
Protective solutions for organs
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, (2008/06/13)
Described is a protective solution for avoiding ischemic, storage or ischemia/reperfusion to organs, or to isolated cell systems, or to tissue components after perfusion, surgery, transplantation, or cryopreservation and subsequent reperfusion, which contains alkali ions, and if need be also alkaline earth ions as the electrolyte, a buffer e.g. on a histidine derivation basis, as well as a polyol and/or a saccharide, has an osmolarity of about 290 mosm/l to about 350 mosm/l, as well as a pH value of about 6.8 to about 7.4, and to which hydroxamic acid, and/or one or more hydroxamic acid derivatives are added.
Method of treating hemoglobinopathies
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, (2008/06/13)
A therapeutic process for treating anemias in primates, including man, particularly those anemias of genetic origin including sickle-cell anemia, which comprises administering to an anemic primate an amount of a polyhydroxy benzoic, mandelic or phenylacetic acid derivative as specified at a dose level sufficient to increase fetal hemoglobin.
HYDROXY BENZOHYDROXAMIC ACIDS AND BENZAMIDES
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, (2008/06/13)
Di or trihydroxybenzohydroxamic acids or N-substituted benzamides, inhibitors or ribonucleotide reductase
Synthesis of hydroxy- and amino-substituted benzohydroxamic acids: Inhibition of ribonucleotide reductase and antitumor activity
van't Riet,Wampler,Elford
, p. 589 - 592 (2007/10/05)
Benzohydroxamic acids inhibit mammalian ribonucleotide reductase and exhibit antineoplastic activity in L1210 leukemic mice. Five new hydroxy- and amino-substituted benzohydroxamic acids (3,4- and 3,5-OH,3,4-NH2, 2,3,4-, and 3,4,5-OH) were prepared and tested along with 12 previously reported benzohydroxamic acids (BHA) for enzyme inhibition and antitumor activity. The most potent enzyme inhibitor in this series was 2,3,4-OH-BHA (ID50=3.5 μM), which is 140 times more potent than hydroxyurea, but its toxicity limited the antitumor activity to a 30% increase in life span of L1210 bearing mice at 125 (mg/kg) day ip for 8 days. The most effective antitumor agent in this series was 3,4-OH-BHA which prolonged the life span of L1210 bearing mice 103% at 600 (mg/kg)/day ip for 8 days.
