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Oxazolidinone compounds and methods of use thereof as antibacterial agents

a technology of oxazolidinone and compounds, which is applied in the field of oxazolidinone compounds, can solve the problems of poor prognosis of infected aids patients

Inactive Publication Date: 2018-10-11
MERCK SHARP & DOHME CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention has various benefits and options for use. The technical effects of the patent text make it easier to explain how the invention can be used to improve technology.

Problems solved by technology

Enormous numbers of MAC are found (up to 1010 acid-fast bacilli per gram of tissue), and consequently, the prognosis for the infected AIDS patient is poor.
Despite clinical efficacy in treating these diseases, long-term use of linezolid has been associated with adverse events including myelosuppression (including anemia and leukopenia) (Hickey et al., Therapy 3(4):521-526 (2006), neuropathy, and serotonin syndrome.

Method used

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  • Oxazolidinone compounds and methods of use thereof as antibacterial agents
  • Oxazolidinone compounds and methods of use thereof as antibacterial agents
  • Oxazolidinone compounds and methods of use thereof as antibacterial agents

Examples

Experimental program
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Effect test

example 1

Synthesis of (S)-5-(aminomethyl)-3-(2-fluoro-4′-(methylthio)-[1,1′-biphenyl]-4-yl)oxazolidin-2-one

[0210]

Step A: Synthesis of (R)-3-(4-bromo-3-fluorophenyl)-5-(hydroxymethyl)oxazolidin-2-one

[0211]To a solution of benzyl (4-bromo-3-fluorophenyl)carbamate (50.0 g, 154 mmol) in THF (600 mL) was added lithium tert-butoxide (37.0 g, 463 mmol) at 0° C. The mixture was stirred at 20° C. for 2 hours, and then (R)-oxiran-2-ylmethyl butyrate (44.5 g, 309 mmol) at 20° C. was added. The resulting mixture was stirred at 20° C. for 16 hours, and then concentrated HCl was added to adjust the pH to 7. The organic solvent was removed under reduced pressure, and the residue was diluted with EtOAc (400 mL), washed with water (400 mL×2) and brine (500 mL), dried over Na2SO4, filtered and concentrated to give the crude product, which was purified by column chromatography (SiO2, PE:EtOAc=1:1) to give the product (R)-3-(4-bromo-3-fluorophenyl)-5-(hydroxymethyl)oxazolidin-2-one as a solid.

Step B: Synthesis ...

example 40

Synthesis of (S)—N-((3-(5-fluoro-6-(4-(methylthio)phenyl)pyridin-3-yl)-2-oxooxazolidin-5-yl)methyl)acetamide

[0217]

Step A: Synthesis of (S,E)-1-(benzylideneamino)-3-chloropropan-2-ol

[0218]To a solution of (S)-2-(chloromethyl)oxirane (5.0 g, 54.3 mmol) in EtOH (15 mL) was added ammonia hydrate (4.9 g, 140 mmol) and benzaldehyde (5.98 g, 56.4 mmol) and the resulting mixture was stirred at 40° C. for 16 hours. The reaction mixture was concentrated to give (S,E)-1-(benzylideneamino)-3-chloropropan-2-ol as a solid, which was used in the next step without purification.

Step B: Synthesis of (S)-1-amino-3-chloropropan-2-ol hydrochloride

[0219]To a solution of (S,E)-1-(benzylideneamino)-3-chloropropan-2-ol (6.2 g, 31.4 mmol) in EtOH (13 mL) and Toluene (12 mL) was added HCl (6.8 mL, 83 mmol) and the resulting mixture was stirred at 35° C. for 4 hours. The reaction mixture was concentrated to smaller volume, washed with water (20 mL), and the aqueous extract was lyophilized to give (S)-1-amino-3...

example 41

Synthesis of (S)—N-((3-(2-fluoro-4′-(methylthio)-[1,1′-biphenyl]-4-yl)-2-oxooxazolidin-5-yl)methyl)cyclopropanecarboxamide

[0223]

[0224]To a solution of cyclopropanecarboxylic acid (14.2 mg, 0.165 mmol) in DMF (2 mL) was added DIEA (53 mL, 0.301 mmol) and HATU (62.9 mg, 0.165 mmol). The mixture was stirred at 20° C. for 15 minutes and then (S)-5-(aminomethyl)-3-(2-fluoro-4′-(methylthio)-[1,1′-biphenyl]-4-yl)oxazolidin-2-one (50.0 mg, 0.150 mmol) was added. The mixture was stirred at 20° C. for 16 hours. The reaction mixture was filtered, and concentrated to give a residue which was purified by reverse phase prep-HPLC to give (S)—N-((3-(2-fluoro-4′-(methylthio)-[1,1′-biphenyl]-4-yl)-2-oxooxazolidin-5-yl)methyl)cyclopropanecarboxamide as a solid. LC / MS=401.1 [M+H+].

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Abstract

The present invention relates to oxazolidinone compounds of Formula (I): and pharmaceutically acceptable salts thereof, wherein A, E, and R1 are as defined herein. The present invention also relates to compositions which comprise at least one oxazolidinone compound of the invention. The invention also provides methods for inhibiting growth of mycobacterial cells as well as a method of treating mycobacterial infections by Mycobacterium tuberculosis comprising administering a therapeutically effective amount of an oxazolidinone of the invention and / or a pharmaceutically acceptable salt thereof, or a composition comprising such compound and / or salt.

Description

FIELD OF THE INVENTION[0001]The present invention relates to novel oxazolidinone compounds useful for the treatment of bacterial infections, particularly mycobacterial infections. The invention also relates to methods of use of oxazolidinone compounds for the treatment of mycobacterial infections such as those caused by Mycobacteria tuberculosis.BACKGROUND OF THE INVENTION[0002]Mycobacterium is a genus of bacterium, neither truly gram-positive nor truly gram-negative, including pathogens responsible for tuberculosis (M. tuberculosis) and leprosy (M. leprae). Tuberculosis (TB), in particular, despite the availability of anti-TB drugs such as isoniazide and rifampin, is considered to be one of the world's deadliest diseases. According to World Health Organization, in 2012, there were 8.6 million new TB cases and 1.3 million TB deaths. See, Global tuberculosis report 2013 published by the World Health Organization. Complicating the TB epidemic is the rising tide of multi-drug-resistant...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C07D263/20C07D471/04C07D413/10C07D417/10C07D413/04C07D487/04C07D413/06C07D417/14C07D413/14A61K31/421A61K31/437A61K31/422A61K31/427A61K31/4439A61K31/506A61K31/553A61K31/4985A61K31/541A61K31/5377A61K45/06
CPCC07D263/20C07D471/04C07D413/10C07D417/10C07D413/04C07D487/04C07D413/06C07D417/14C07D413/14A61K31/421A61K31/437A61K31/422A61K31/427A61K31/4439A61K31/506A61K31/553A61K31/4985A61K31/541A61K31/5377A61K45/06A61P31/06A61K2300/00
Inventor MANDAL, MIHIR B.OLSEN, DAVID B.SU, JINGYANG, LIHUYOUNG, KATHERINESUZUKI, TAKAOYOU, LANYING
Owner MERCK SHARP & DOHME CORP
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