- 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
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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.
- 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.
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p. 5310 - 5321
(2017/11/13)
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- TOPICAL FORMULATIONS OF BIARYL HETEROCYCLIC COMPOUNDS AND METHODS OF USE THEREOF
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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.
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- Method for preparing tedizolid phosphate
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The invention relates to the technical field of preparation of tedizolid phosphate, and especially relates to a preparation method of tedizolid phosphate. According to the invention, 3-fluoroaniline is taken as a raw material, and is subjected to a nucleophilic substitution reaction with (R)-(-)-glycidyl butyrate, then a cyclization reaction and hydrolysis are carried out, protective group is removed to obtain a compound (VI); the compound (VI) is subjected to an iodination reaction and the nucleophilic substitution reaction to obtain a compound (VIII); the compound (VIII) and 2-(1-methyl-tetrazolium-5-group)-5-bromopyridine (IX) are reacted, and then a target product (I) is obtained with phosphoric acid. The method has the advantages of short route, mild reaction condition, and easy post-treatment, and is more suitable for industrial production requirement.
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- A PROCESS FOR THE PREPARATION OF TEDIZOLID PHOSPHATE
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The present invention provides a process for the preparation of tedizolid phosphate.
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- METHOD FOR TREATING, PREVENTING, OR REDUCING THE RISK OF SKIN INFECTION
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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.
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- An improved efficient synthesis of the antibacterial agent torezolid
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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%.
- Li, Gang,Yuan, Bao-Kun,Tang, Wu,Zhao, Hong-Yi,Lin, Zi-Yun,Huang, Hai-Hong
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p. 143 - 146
(2015/02/19)
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- Discovery of torezolid as a novel 5-hydroxymethyl-oxazolidinone antibacterial agent
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A series of novel substituted pyridyl phenyl oxazolidinone analogues were synthesized and their structure-activity relationship (SAR) was investigated based on in vitro and in vivo antibacterial activities. The minimum inhibitory concentrations (MICs) of the synthesized compounds against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) ranged from 0.12 to 2.0 μg/mL, and against Haemophilus influenzae (Hi) from 2.0 to 8.0 μg/mL. Compared to linezolid, only four compounds (11, 12, 21 and 29) showed higher in vitro antibacterial activities and better in vivo protective effects in mice. To improve the aqueous solubility, various prodrugs of compound 11 (DA-7157), which exerted a potency that was enhanced by 2-8-fold compared to that of linezolid, were synthesized. Among the prodrugs, the phosphate compound 42 exhibited excellent aqueous solubility (>50 mg/mL in DW) and good pharmacokinetic profiles, along with better in vivo efficacy than linezolid. This compound 42 is currently undergoing clinical trials with the brand name Torezolid.
- Im, Weon Bin,Choi, Sun Ho,Park, Ju-Young,Choi, Sung Hak,Finn, John,Yoon, Sung-Hwa
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p. 1027 - 1039
(2011/04/17)
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- Process for the synthesis of triazoles
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The present invention relates to processes for the preparation of triazoles. These compounds are useful as anti-infective, anti-proliferative, anti-inflammatory, and prokinetic agents.
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Page/Page column 37
(2010/09/18)
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- Antibacterial oxazolidinones possessing a novel C-5 side chain. (5R)-trans-3-[3-fluoro-4-(1-oxotetrahydrothiopyran-4-yl)phenyl] -2-oxooxazolidine-5-carboxylic acid amide (PF-00422602), a new lead compound
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Oxazolidinones possessing a C-5 carboxamide functionality (reverse amides) represent a new series of compounds that block bacterial protein synthesis. These reverse amides also exhibited less potency against monoamine oxidase (MAO) enzymes and thus posses
- Poel, Toni-Jo,Thomas, Richard C.,Adams, Wade J.,Aristoff, Paul A.,Barbachyn, Michael R.,Boyer, Frederick E.,Brieland, Joan,Brideau, Roger,Brodfuehrer, Joanne,Brown, Alan P.,Choy, Allison L.,Dermyer, Michael,Dority, Michael,Ford, Charles W.,Gadwood, Robert C.,Hanna, Debra,Hongliang, Cai,Huband, Michael D.,Huber, Christopher,Kelly, Rose,Kim, Ji-Young,Martin Jr., Joseph P.,Pagano, Paul J.,Ross, Daniel,Skerlos, Laura,Sulavik, Mark C.,Zhu, Tong,Zurenko, Gary E.,Vara Prasad
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p. 5886 - 5889
(2008/04/05)
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- Novel substituted (pyridin-3-yl)phenyloxazolidinones: Antibacterial agents with reduced activity against monoamine oxidase A and increased solubility
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Oxazolidinones represent a new and promising class of antibacterial agents. Current research in this area is mainly concentrated on improving the safety profile and the antibacterial spectrum. Oxazolidinones bearing a (pyridin-3-yl)phenyl moiety (e.g., 3) generally show improved antibacterial activity compared to linezolid but suffer from potent monoamine oxidase A (MAO-A) inhibition and low solubility. We now disclose the finding that new analogues of 3 with acyclic substituents on the pyridyl moiety exhibit excellent activity against Gram-positive pathogens, including linezolid-resistant Streptococcus pneumoniae. Generally, more bulky substituents yielded significantly reduced MAO-A inhibition relative to the unsubstituted compound 3. The MAO-A SAR can be rationalized on the basis of docking studies using a MAO-A/MAO-B homology model. Solubility was enhanced with incorporation of polar groups. One optimized analogue, compound 13, showed low clearance in the rat and efficacy against S. pneumoniae in a mouse pneumonia model.
- Reck, Folkert,Zhou, Fei,Eyermann, Charles J.,Kern, Gunther,Carcanague, Dan,Ioannidis, Georgine,Illingworth, Ruth,Poon, Grace,Gravestock, Michael B.
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p. 4868 - 4881
(2008/03/12)
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- 3-[4-(6-{4,5-DIHYDROISOXAZOL-3-YL}PYRIDIN-3-YL)-3-PHENYL]-5-(1H-1,2,3-TRIAZOL-1-YLMETHYL)-1,3-OXAZOLIDIN-2-ONES AS ANTIBACTERIAL AGENTS
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Compounds of the formula (I): or a pharmaceutically- acceptable salt or pro-drug thereof: wherein R1 is selected for example from hydrogen, halogen, optionally substituted methyl; R2 and R3 are independently selected from
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- 3- `4- {6-SUBSTITUTED ALKANOYL) PYRIDIN-3-YL} -3-PHENYL! -5- (1H-1, 2, 3-TRIAZOL-1-YLMETHYL) -1, 3-OXAZOLIDIN-2-ONES AS ANTIBACTERIAL AGENTS
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Compounds of formula (I) as well as pharmaceutically-acceptable salts and pro-drugs thereof are disclosed wherein R1, R2, R3, and R4 are defined herein. Also disclosed are processes for making compounds of formula (I) as well as methods of using compounds of formula (I) for treating bacterial infections.
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- 3- (4- (2-DIHYDROISOXAZOL-3-YLPYRIDIN-5-YL) PHENYL) -5-TRIAZOL-1-YLMETHYLOXAZOLIDIN-2-ONE DERIVAIVES AS MAO INHIBITORS FOR THE TREATMENT OF BACTERIAL INFECTIONS
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Compounds of formula (I) as well as pharmaceutically-acceptable salts and pro-drugs thereof are disclosed wherein R1, R2, R3, and R4 are defined herein. Also disclosed are processes for making compounds of formu
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- 3- {4- (PYRIDIN-3-YL) PHENYL} -5- (1H-1, 2, 3-TRIAZOL-1-YLMETHYL) -1, 3-OXAZOLIDIN-2-ONES AS ANTIBACTERIAL AGENTS
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Compounds of formula (I), as well as pharmaceutically-acceptable salts and pro-drugs thereof, are disclosed wherein R1, R2, R3, and R4 are defined herein. Also disclosed are processes for making compounds of formula (I) as well as methods of using compounds of formula (I) for treating bacterial infections.
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- NOVEL OXAZOLIDINONE DERIVATIVES
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The present invention relates to novel derivatives of oxazolidinone, a method thereof and pharmaceutical compositions comprising the derivatives for use in an antibiotic. The oxazolidinone derivatives of the present invention show inhibitory activity against a broad spectrum of bacteria and lower toxicity. The prodrugs, prepared by reacting the compound having hydroxyl group with amino acid or phosphate, have an excellent efficiency on solubility thereof against water. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the oxazolidinone are used in an antibiotic.
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Page/Page column 24; 25
(2008/06/13)
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- ANTIBACTERIAL COMPOUNDS
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A compound of the formula (I), or a pharmaceutically-acceptable salt, or in-vivo hydrolysable ester thereof wherein in (I) C is for example formula (D), (E), (H) wherein A and B are independently selected from formulae (i) and (ii) and R2b and R6b, R2b and R6a, R3a and R5a, are for example selected from H, F, OMe and Me; R2b’ and R6b’, R2a’ and R6a’, R3a’, R5a’ are for example selected from H, OMe and Me; R1a and R1b are for example selected from hydroxy, -OSi(tri-(1-6C)alkyl), NR5C(=W) R4, formla (a), formula (b) wherein HET-1 is for example isoxazolyl and HET-2 is for example triazolyl or tetrazolyl. Methods for making compounds of the formula (I), compositions containing them and their use as antibacterial agents are also described.
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- Amide-containing compound having improved solubility and method of improving the solubility of an amide-containing compound
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The present invention is directed to novel amide-containing compounds which have an improved solubility and a method of improving the solubility of amide-containing compounds. The amide-containing compounds include oxazolidinone compounds and the bioavail
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- N-aryl-2-oxazolidinone-5-carboxamides and their derivatives
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The present invention provides antibacterial agents having the formulae I, II, and III described herein.
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- CHEMICAL COMPOUNDS
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A compound of the formula (I), or a pharmaceutically-acceptable salt, or in-vivo hydrolysable ester thereof: Wherein C is selected from (D) and (E), R2a, R6a, and R3a ar e independently selected from for example H, CF3, Me and Et; R2b and R6b are independently selected from for example H,F, CF3, Me and Et; R1b is for example optionally substituted diazolyl, triazolyl or tetrazolyl; R4 is for example an optionally substituted 5- or 6-membered heterocyclic ring system. Methods for making compounds of the formula (I), compositions containing them and their use as antibacterial agents are also described.
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- OXAZOLIDINONE AND / OR ISOXAZOLINE DERIVATIVES AS ANTIBACTERIAL AGENTS
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A compound of the formula (I), or a pharmaceutically-acceptable salt, or in-vivo hydrolysable ester thereof: formula (I) wherein in (I) C is for example formula (D), formula (E), formula (H) wherein A and B are independently selected from (i) formula (J)
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Page 81-82; 158-159
(2010/02/07)
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- ANTIBACTERIAL OXAZOLIDINONES
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A compound of the formula (I), or a pharmaceutically-acceptable salt, or in-vivo hydrolysable ester thereof: formula (I)wherein C is selected from D and E, formula (II) R2a, R6a, and R3a are independently selected from for example H, CF3, Me and Et;R2b and R6b are independently selected from for example H, F, CF3, Me and Et; R1b is -NRz-Z wherein Rz is for example hydrogen and Z is a 5- or 6-membered heteroaryl ring;R4 is for example an optionally substituted 5- or 6-membered heterocyclic ring system. Methods for making compounds of the formula (I), compositions containing them and their use as antibacterial agents are also described.
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- OXAZOLIDINONE DERIVATIVES AND THEIR USE AS ANTIBACTERIAL AGENTS
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A compound of the formula (I), or a pharmaceutically-acceptable salt, or in-vivo hydrolysable ester thereof: (I)wherein in (I) C is for example wherein A and B are independently selected from i) ii) and m is 1 or 2;R2b and R6b, R2a and R6a, R3a and R5a, are for example selected from H, F, OMe and Me;R2b' and R6b', R2a' and R6a', R3a', R5a' are for example selected from H, OMe and Me;R1a is for example optionally substituted (1-10C)alkyl;R1b is for example selected from NR5C(=W)R4, a) , or b) wherein HET-1 is for example isoxazolyl and HET-2 is for example triazolyl or tetrazolyl.Methods for making compounds of the formula (I), compositions containing them and their use as antibacterial agents are also described.
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- HYDROXYMETHYL SUBSTITUTED DIHYDROISOXAZOLE DERIVATIVES USEFUL AS ANTIBIOTIC AGENTS
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Compounds of the formula (I), or a pharmaceutically-acceptable salt, or an in-vivo-hydrolysable ester thereof, (I) R1a is NH(C=W)R5 or (a); W is O or S; R2 and R3 are for example H or F; R1 is for example hydrogen, or halogen; R5 is selected from hydrogen, (2-6C)alkyl (optionally substituted); R6 and R7 are independently selected from hydrogen, and (1-4C)alkyl (optionally substituted); wherein R4 is either a hydroxymethyl substituent on C-4' of the isoxazoline ring; or R4 is a hydroxymethyl substituent on C-5' of the isoxazoline ring and the stereochemistry at C-5' of the isoxazoline ring and at C-5 of the oxazolidinone ring is selected, such that the compound of formula (I) is a single diastereomer; are useful as antibacterial agents; and processes for their manufacture and pharmaceutical compositions containing them are described.
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- ANTIBACTERIAL OXALIDINONES
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Compounds of the formula (I), or a pharmaceutically-acceptable salts, or in-vivo-hydrolysable esters thereo Formula (I): wherein: N-HET is for example triazolyl; Q is for example phenyl or pyridyl, substituted with T; T is for example selected from (TAa1
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- N-ARYL-2-OXAZOLIDINONE-5-CARBOXAMIDES AND THEIR DERIVATIVES AND THEIR USE AS ANTIBACTERIALS
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Compounds of formula B-C-A-CO-NH-R1, wherein A is structure i, ii or iii: formulae (I), (II), (III). C is optionally substituted aryl or heteroaryl, and B is a specified cyclic moiety, or C and B together are a heterobicyclic moiety, are useful as antibacterial agents.
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Page/Page column 82
(2010/02/07)
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- Bicyclo[3,1,0]hexane containing oxazolidinone antibioytics and derivatives thereof
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Oxazolidinones having a bicyclic[3.1.0] hexane containing moiety, which are effective against aerobic and anerobic pathogens such as multi-resistant staphylococci, streptococci and enterococci, Bacteroides spp., Clostridia spp. species, as well as acid-fa
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