216869-24-8Relevant articles and documents
OXAZOLIDINONE DERIVATIVES, PROCESS FOR THEIR PREPERATION AND THEIR USE AS ANTIMYCOBACTERIAL AGENTS
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Page 31-32, (2008/06/13)
Novel compounds belonging to the class of oxazolidinones possessing potent antimycobacterial properties especially useful in the treatment of acid fast organisms such as Mycobacterium tuberculosis, Mycobacterium avium-intracellular complex, M. fortuitum and M. kansai. The compound and its pharmaceutically acceptable salts thereof act as antibacterial agents. Also disclosed is a method for inhibiting growth of mycobacterial cells a well as a method of treating mycobacterial conditions such as Mycobacterium tuberculoses, drug resistant Mycobacterium tuberculosis, Mycobacterium avium-intracellular complex, M. fortuitum and M. kansai, comprising administering an antimycobacterially effective amount of the said compound and/or pharmaceutically acceptable salts thereof. There is also disclosed a process for the manufacture of the said compound or its pharmaceutically acceptable salts.
Substituent effects on the antibacterial activity of nitrogen-carbon- linked (azolylphenyl)oxazolidinones with expanded activity against the fastidious gram-negative organisms Haemophilus influenzae and Moraxella catarrhalis
Genin, Michael J.,Allwine, Debra A.,Anderson, David J.,Barbachyn, Michael R.,Emmert, D. Edward,Garmon, Stuart A.,Graber, David R.,Grega, Kevin C.,Hester, Jackson B.,Hutchinson, Douglas K.,Morris, Joel,Reischer, Robert J.,Ford, Charles W.,Zurenko, Gary E.,Hamel, Judith C.,Schaadt, Ronda D.,Stapert, Douglas,Yagi, Betty H.
, p. 953 - 970 (2007/10/03)
A series of new nitrogen-carbon-linked (azolylphenyl)oxazolidinone antibacterial agents has been prepared in an effort to expand the spectrum of activity of this class of antibiotics to include Gram-negative organisms. Pyrrole, pyrazole, imidazole, triazole, and tetrazole moieties have been used to replace the morpholine ring of linezolid (2). These changes resulted in the preparation of compounds with good activity against the fastidious Gram- negative organisms Haemophilus influenzae and Moraxella catarrhalis. The unsubstituted pyrrolyl analogue 3 and the 1H-1,2,3-triazolyl analogue 6 have MICs against H. influenzae = 4 μg/mL and M. catarrhalis = 2 μg/mL. Various substituents were also placed on the azole moieties in order to study their effects on antibacterial activity in vitro and in vivo. Interesting differences in activity were observed for many analogues that cannot be rationalized solely on the basis of sterics and position/number of nitrogen atoms in the azole ring. Differences in activity rely strongly on subtle changes in the electronic character of the overall azole systems. Aldehyde, aldoxime, and cyano azoles generally led to dramatic improvements in activity against both Gram-positive and Gram-negative bacteria relative to unsubstituted counterparts. However, amide, ester, amino, hydroxy, alkoxy, and alkyl substituents resulted in no improvement or a loss in antibacterial activity. The placement of a cyano moiety on the azole often generates analogues with interesting antibacterial activity in vitro and in vivo. In particular, the 3-cyanopyrrole, 4-cyanopyrazole, and 4-cyano-1H-1,2,3- triazole congeners 28, 50, and 90 had S. aureus MICs ≤ 0.5-1 μg/mL and H. influenzae and M. catarrhalis MICs = 2-4 μg/mL. These analogues are also very effective versus S. aureus and S. pneumoniae in mouse models of human infection with ED50s in the range of 1.2-1.9 mg/kg versus 2.8-4.0 mg/kg for the eperezolid (1) control.
