[EN] PROCESSES FOR THE PREPARATION OF CEFOZOPRAN, ITS SALTS AND POLYMORPHIC FORMS THEREOF<br/>[FR] PROCÉDÉS POUR L'ÉLABORATION DU CEFOZOPRAN, DE SES SELS, ET DE CERTAINES DE SES FORMES POLYMORPHES
申请人:RANBAXY LAB LTD
公开号:WO2010089729A1
公开(公告)日:2010-08-12
The present invention relates to processes for the preparation of cefozopran of Formula (I), its salts and polymorphic forms thereof.
本发明涉及制备化合物cefzopran(化学式I)、其盐和多晶形式的方法。
Process for the production of cephem compounds
申请人:EISAI CHEMICAL CO., LTD.
公开号:EP0832893A1
公开(公告)日:1998-04-01
An industrially excellent, novel process for producing cephem compounds which are useful as medicines, particularly, antibiotics and represented by the following general formula (III):
which comprises reacting in water a 3-cephem-4-carboxylate represented by the following general formula (I):
or a salt thereof with an acid chloride represented by the general formula (II), R1COCl.
Process for the preparation of aminothiadiazolylacetyl halide derivtives
申请人:Eisai Chemical Co., Ltd.
公开号:US05428173A1
公开(公告)日:1995-06-27
A process is provided for the preparation of an aminothiadiazolylacetyl halide derivative represented by the following formula (II): ##STR1## wherein R.sup.1 represents a lower alkyl, cycloalkyl or halogenated lower alkyl group; and R.sup.2 represents an amino-protecting group or a hydrogen atom, or a salt thereof, which process uses as the starting material a compound represented by the following formula (I): ##STR2## wherein R.sup.1 and R.sup.2 have the same meanings as defined above, or a salt thereof.
Described herein is a cephem derivative represented by the general formula:
wherein n stands for 1 or 2, Y stands for CH or nitrogen atom, R, represents a lower hydrocarbon group or a carboxyl-substituted, a carbamoyl-substituted, or a cyclopropyl-substituted lower alkyl group, and R2 denotes hydroxyl group, a lower alkyl group, a hydroxy-substituted lower alkyl group, or carbamoyl group. The derivative is useful as antibacterial composition. Also described herein are process for the production of the derivative, antibacterial composition, intermediate of the derivative and process for the production thereof.
Water-soluble antibiotic composition and water-soluble salts of new cephem compounds
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0303223A2
公开(公告)日:1989-02-15
A water-soluble antibiotic composition which comprises crystals of a cephem compound of the following formula:
wherein R¹ is a residue of an aliphatic hydrocarbon which may have suitable substituent(s), and
R² is a heteronio(lower)alkyl, or an acid addition salt thereof, and a pharmaceutically acceptable carbonic acid salt. The invention also relates to a salt comprising cation(s) and anion of the formula:
wherein R¹ is a residue of an aliphatic hydrocarbon which may have suitable substituent(s),
R² is a heteronio(lower) alkyl, a process for preparing such salt and pharmaceutical composition comprising it.