The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2003
Filed:
Jul. 09, 2001
Tarek Mansour, New City, NY (US);
Phaik-Eng Sum, Pomona, NY (US);
Yang-I Lin, Tappan, NY (US);
Zhong Li, Congers, NY (US);
Wyeth, Five Giralda Farms, Madison, NJ (US);
Abstract
The invention is a process improvement for producing the carbapenem antibacterial agent (4R, 5S, 6S)-3-[[2R,3R)-2-[[[(S)-2-amino-3-methyl-1-oxobutyl]amino]methyl]tetrahydro-3-furanyl]thio]-6-[R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid by hydrogenation of 4-nitrobenzyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-{[2R,3R)-2-({[(2S)-3-methyl-2-({[4-nitrobenzyl)oxy]carbonyl}amino)butanoyl]amino}methyl)-tetrahydrofuran-3-yl]thio}-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate in a biphasic solvent mixture comprising a water portion and an organic solvent portion, not containing an acid acceptor. The water portion is separated from the organic solvent portion and (4R,5S,6S)-3-[[(2R,3R)-2-[[[(S)-2-amino-3-methyl-1-oxobutyl]amino]methyl]tetrahydro-3-furanyl]thio]-6-[R-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid is isolated from the separated water portion by lyophilization or reverse osmosis.