149524-47-0Relevant articles and documents
Incorporation of a chiral gem-disubstituted nitrogen heterocycle yields an oxazolidinone antibiotic with reduced mitochondrial toxicity
Sun, Alexander W.,Bulterys, Philip L.,Bartberger, Michael D.,Jorth, Peter A.,O'Boyle, Brendan M.,Virgil, Scott C.,Miller, Jeff F.,Stoltz, Brian M.
supporting information, p. 2686 - 2689 (2019/08/07)
gem-Disubstituted N-heterocycles are rarely found in drugs, despite their potential to improve the drug-like properties of small molecule pharmaceuticals. Linezolid, a morpholine heterocycle-containing oxazolidinone antibiotic, exhibits significant side effects associated with human mitochondrial protein synthesis inhibition. We synthesized a gem-disubstituted linezolid analogue that when compared to linezolid, maintains comparable (albeit slightly diminished) activity against bacteria, comparable in vitro physicochemical properties, and a decrease in undesired mitochondrial protein synthesis (MPS) inhibition. This research contributes to the structure-activity-relationship data surrounding oxazolidinone MPS inhibition, and may inspire investigations into the utility of gem-disubstituted N-heterocycles in medicinal chemistry.
Compound design guidelines for evading the efflux and permeation barriers of Escherichia coli with the oxazolidinone class of antibacterials: Test case for a general approach to improving whole cell Gram-negative activity
Spaulding, Andrew,Takrouri, Khuloud,Mahalingam, Pornachandran,Cleary, Dillon C.,Cooper, Harold D.,Zucchi, Paola,Tear, Westley,Koleva, Bilyana,Beuning, Penny J.,Hirsch, Elizabeth B.,Aggen, James B.
supporting information, p. 5310 - 5321 (2017/11/13)
Previously we reported the results from an effort to improve Gram-negative antibacterial activity in the oxazolidinone class of antibiotics via a systematic medicinal chemistry campaign focused entirely on C-ring modifications. In that series we set about testing if the efflux and permeation barriers intrinsic to the outer membrane of Escherichia coli could be rationally overcome by designing analogs to reside in specific property limits associated with Gram-negative activity: i) low MW (7.4 1), and iii) zwitterionic character at pH 7.4. Indeed, we observed that only analogs residing within these limits were able to overcome these barriers. Herein we report the results from a parallel effort where we explored structural changes throughout all three rings in the scaffold for the same purpose. Compounds were tested against a diagnostic MIC panel of Escherichia coli and Staphylococcus aureus strains to determine the impact of combining structural modifications in overcoming the OM barriers and in bridging the potency gap between the species. The results demonstrated that distributing the charge-carrying moieties across two rings was also beneficial for avoidance of the outer membrane barriers. Importantly, analysis of the structure-permeation relationship (SPR) obtained from this and the prior study indicated that in addition to MW, polarity, and zwitterionic character, having ≤4 rotatable bonds is also associated with evasion of the OM barriers. These combined results provide the medicinal chemist with a framework and strategy for overcoming the OM barriers in GNB in antibacterial drug discovery efforts.
Preparation method of biaryl oxazolidone intermediate
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Paragraph 0045-0047, (2017/07/11)
The invention relates to a preparation method of a biaryl oxazolidone intermediate (5S)-N-[[3-(3-fluoro-4-iodophenyl)-2-oxooxazolidine-5-ol]methyl]acetamine (I). According to the method, the intermediate is prepared with m-fluoroaniline as an initial raw material through amino protection, iodination and cyclization sequentially. Compared with a reported preparation method of the biaryl oxazolidone intermediate, the method adopts a short route, increases the yield, greatly reduces the cost and is more suitable for industrial production.
A Simple, efficient, Catalyst-Free and Solvent-Less Microwave-Assisted process for N-Cbz Protection of Several amines
Aouf, Zineb,Mansouri, Rachida,Lakrout, Salah,Berredjem, Malika,Aouf, Nour-Eddine
, p. 151 - 156 (2017/08/02)
A simple, green and chemo-selective method for the N-benzyloxycarbonylation of amines, β-amino alcohols, α-amino esters and sulfonamides has been developed under microwave irradiation. Good to excellent yields of the N-benzyloxy-carbamates compounds were obtained in short times without any side products.
Application of spectroscopic methods (FT-IR, Raman, ECD and NMR) in studies of identification and optical purity of radezolid
Michalska, Katarzyna,Gruba, Ewa,Mizera, Miko?aj,Lewandowska, Kornelia,Bednarek, El?bieta,Bocian, Wojciech,Cielecka-Piontek, Judyta
supporting information, p. 116 - 122 (2017/04/28)
In the presented study, N-{[(5S)-3-(2-fluoro-4′-{[(1H-1,2,3-triazol-5-ylmethyl)amino]methyl}biphenyl-4-yl)-2-oxo-1,3-oxazolidin-5-yl]methyl}acetamide (radezolid) was synthesized and characterized using FT-IR, Raman, ECD and NMR. The aim of this work was t
TOPICAL FORMULATIONS OF BIARYL HETEROCYCLIC COMPOUNDS AND METHODS OF USE THEREOF
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Paragraph 0194, (2017/12/15)
The present invention relates to topical formulations of biaryl heterocyclic compounds and methods of use thereof for treating acne and other skin infections caused or mediated by Streptococcus pyogenes, Streptococcus agalactiae, Haemophilus influenza, Trichomonas vaginalis, Klebsiella sp., Enterobacter sp., Proteus sp., Propionibacterium acnes, Gardnerella vaginalis, or Staphylococcus aureus (including Methicillin-resistant Staphylococcus aureus (MRSA)) in a patient in need thereof. In certain embodiments, the acne or other skin infection is caused or mediated by Propionibacterium acnes, Gardnerella vaginalis, or Staphylococcus aureus.
A oxazolidinone compounds of preparation method (by machine translation)
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Paragraph 0044, (2017/05/12)
The invention provides a oxazolidinone compounds of the preparation method. Specifically provides the type 1 compound preparation method. The formula 1 compound preparation method comprises, formula 2 N - methyl - D - grape amine compound in the presence of a catalytic reduction, direct formula 1 compound. The present invention provides a preparation has simplified the reaction step, shorten the reaction route, can make the final yield of the product is higher, and, better purity. (by machine translation)
METHOD FOR TREATING, PREVENTING, OR REDUCING THE RISK OF SKIN INFECTION
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Paragraph 0210; 0211, (2016/06/06)
The present invention relates to methods for treating acne and other skin infections caused or mediated by Propionibacterium acnes, Gardnerella vaginalis, or Staphylococcus aureus in a patient with a safe and effective amount of a topically applied oxazolidinone antibiotic compound.
An improved efficient synthesis of the antibacterial agent torezolid
Li, Gang,Yuan, Bao-Kun,Tang, Wu,Zhao, Hong-Yi,Lin, Zi-Yun,Huang, Hai-Hong
, p. 143 - 146 (2015/02/19)
An improved and efficient method for the preparation of torezolid based on Suzuki cross-coupling reaction as the key step was developed on a gram scale in five steps. The total yield was 44% and the optical purity of torezolid by the improved method was above 99%.
Synthesis and in vitro activity of novel 1,2,4-triazolo[4,3-a]pyrimidine oxazolidinone antibacterial agents. Part II
Khera, Manoj Kumar,Cliffe, Ian A.,Prakash, Om
, p. 5266 - 5269 (2011/10/02)
The synthesis and antibacterial activity of 1,2,4-triazolo[4,3-a]pyrimidine oxazolidinones is reported. Compound 3e with a 2,4-disubstituted thiophene ring was found to be a potent inhibitor of Gram-positive pathogens and was 4-16-fold more potent than Linezolid.