Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-04-05
2008-08-26
Berch, Mark L (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07417143
ABSTRACT:
An improved process for the purification of tazobactam or its derivatives of the formula (I)wherein R represents hydrogen, C1-C6alkyl, p-methoxybenzyl, o-nitrobenzyl, p-nitrobenzyl, o-chlorobenzyl, benzyl or diphenylmethyl, which comprises the steps of:i) slurrying the compound of formula (I) containing the impurity of the formula (V) using a solvent in the presence or absence of tartaric acid with or without the presence of water at 20-50° C. andii) isolating the compound of formula (I) in pure form.
REFERENCES:
patent: 4626384 (1986-12-01), Tanaka et al.
patent: 2002/0193587 (2002-12-01), Shimabayashi et al.
patent: 2002/0193588 (2002-12-01), Shimabayashi et al.
patent: 2003/0232983 (2003-12-01), Deshpande et al.
patent: 2004/0162277 (2004-08-01), Shimbayashi et al.
patent: A-63-066187 (1988-03-01), None
Gnanaprakasam Andrew
Om Reddy Gaddam
Senthilkumar Udayampalayam Palanisamy
Berch Mark L
Oliff & Berridg,e PLC
Orchid Chemicals & Pharmaceuticals Limited
LandOfFree
Process for the preparation of Tazobactam in pure form does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of Tazobactam in pure form, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of Tazobactam in pure form will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3995029