Process for preparing cephalosporin compounds from reactive orga

Details Process for preparing cephalosporin compounds from reactive orga Process for preparing cephalosporin compounds from reactive orga

1994-06-10

1996-10-22

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540223, 540225, 540227, 540228, C07D50106

Patent

active

055678130

ABSTRACT:
The present invention provides a process for preparing cephem derivatives having the following general formula (I): ##STR1## in which R.sup.1 represents a carboxy group or a protected carboxy group which can form the salt of --COO.sup.- M.sup.+ with an alkali metal ion (M.sup.+) such as sodium, or may represent --COO.sup.- when R.sup.2 has a substituent having positive electric charge such as pyridinium, pyrimidinium or thiazolium,

REFERENCES:
patent: 4098888 (1978-07-01), Ochiai et al.
patent: 5317099 (1996-05-01), Lee et al.

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