Posts Tagged ‘oxazolidinones’

newly developed oxazolidinone antibiotics

Larry H. Bernstein, MD, FCAP, Curator




New Antibacterial oxazolidinones in pipeline by Wockhardt





MF C19 H25 F2 N3 O5, MW 413.42

Acetamide, N-​[[(5S)​-​3-​[3,​5-​difluoro-​4-​[4-​hydroxy-​4-​(methoxymethyl)​-​1-​piperidinyl]​phenyl]​-​2-​oxo-​5-​oxazolidinyl]​methyl]​-

CAS 957796-51-9

Antibacterial oxazolidinones

THIS MAY BE WCK 4086?????


WO 2015173664, US8217058, WO 2012059823, 


Oxazolidinone represent a novel chemical class of synthetic antimicrobial agents.Linezolid represents the first member of this class to be used clinically. Oxazolidinones display activity against important Gram-positive human and veterinary pathogens including Methicillin-Resistant Staphylococcus aureus (MRSA), Vancomycin Resistant Enterococci (VRE) and β-lactam Resistant Streptococcus pneumoniae (PRSP). The oxazolidinones also show activity against Gram-negative aerobic bacteria, Gram-positive and Gram-negative anaerobes. (Diekema D J et al., Lancet 2001 ; 358: 1975-82).

Various oxazolidinones and their methods of preparation are disclosed in the literature. International Publication No. WO 1995/25106 discloses substituted piperidino phenyloxazolidinones and International Publication No. WO 1996/13502 discloses phenyloxazolidinones having a multisubstituted azetidinyl or pyrrolidinyl moiety. US Patent Publication No. 2004/0063954, International Publication Nos. WO 2004/007489 and WO 2004/007488 disclose piperidinyl phenyl oxazolidinones for antimicrobial use.

Pyrrolidinyl/piperidinyl phenyl oxazohdinone antibacterial agents are also described in Kim H Y et al., Bioorg. & Med. Chem. Lett., (2003), 13:2227-2230. International Publication No. WO 1996/35691 discloses spirocyclic and bicyclic diazinyl and carbazinyl oxazolidinone derivatives. Diazepeno phenyloxazolidinone derivatives are disclosed in the International Publication No. WO 1999/24428. International Publication No. WO 2002/06278 discloses substituted aminopiperidino phenyloxazolidinone derivatives.

Various other methods of preparation of oxazolidinones are reported in US Patent No. 7087784, US Patent No. 6740754, US Patent No. 4948801 , US Patent No. 3654298, US Patent No. 5837870, Canadian Patent No. 681830, J. Med. Chem., 32, 1673 (1989), Tetrahedron, 45, 1323 (1989), J. Med. Chem., 33, 2569 (1990), Tetrahedron Letters, 37, 7937-40 (1996) and Organic Process Research and Development, 11 , 739-741(2007).

Indian Patent Application No. 2534/MUM/2007 discloses a process for the preparation of substituted piperidino phenyloxazolidinones. International Publication No. WO2012/059823 further discloses the process for the preparation of phosphoric acid mono-(L-{4-[(5)-5-(acetylaminomethyl)-2-oxo-oxazolidin-3-yl]-2,6-difluorophenyl}4-methoxymethyl piperidine-4-yl)ester.

US Patent No. 8217058 discloses (5S)-N-{3-[3,5-difluoro-4-(4-hydroxy-4-methoxymethyl-piperidin-l-yl)-phenyl]-2-oxo-oxazolidin-5-ylmethyl}-acetamide as an antibacterial agent and its process for preparation.







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Wockhardt Ltd,

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(3) (4)



WO 2012059823

Phosphoric acid mono-(l-{4-[(S)-5-(acetylamino- methyl)-2-oxo-oxazolidin-3-yl]-2,6-difluorophenyl}-4-methoxymethyl-piperidin-4-yl) ester of Formula (A),
Figure imgf000022_0001
the process comprising the steps of:
a) Converting intermediate of Formula (1) into intermediate of Formula (3)
Figure imgf000022_0002
b) Converting intermediate of Formula (3) into intermediate of Formula (5)
Figure imgf000022_0003

c) Converting intermediate of Formula (5) into intermediate of structure (6)

Figure imgf000022_0004
(5) <6> d) Converting intermediate of Formula (6) into intermediate of Formula (10)
Figure imgf000023_0001
e) Converting intermediate of Formula (10) into intermediate of Formula (11),
Figure imgf000023_0002

f) Converting intermediate of Formula (11) into compound of Formula (A) or Pharmaceutically acceptable salts thereof

Figure imgf000023_0003



Figure imgf000006_0001
Figure imgf000006_0002
Figure imgf000006_0003



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