Process for the preparation of cephem prodrug esters

Details Process for the preparation of cephem prodrug esters Process for the preparation of cephem prodrug esters

1993-12-30

1996-12-31

Ford, John M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D50102

Patent

active

055895948

ABSTRACT:
The invention relates to a process for the preparation of cephem prodrug esters of the formula: ##STR1## in which R.sup.1 is C.sub.1 -C.sub.5 -alkanoyloxy-C.sub.1 -C.sub.3 -alkyl or C.sub.1 -C.sub.5 -alkoxycarbonyloxy-C.sub.1 -C.sub.3 -alkyl and X is an inorganic or organic anion, and in which the hydroxyimino group is present in the syn-form.

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