Crystalline acid addition salts of diastereomerically pure 1-(2,

Details Crystalline acid addition salts of diastereomerically pure 1-(2, Crystalline acid addition salts of diastereomerically pure 1-(2,

1995-05-22

1997-01-14

Ford, John M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D50156, C07D50154

Patent

active

055941338

ABSTRACT:
Crystalline acid addition salts of diastereomerically pure 1-(2,2-dimethylpropionyloxy)ethyl 3-cephem-4-carboxylate
The invention relates to crystalline acid addition salt of the two diastereomers of the 1-(2,2-dimethylpropionyloxy)ethyl 3-cephem-4-carboxylate of the general formula II ##STR1## in which X is the anion of a physiologically acceptable, mono- or polybasic, inorganic or organic acid and the group =N--OH is in the syn-position, pharmaceutical formulations which are active against bacterial infections and contain such cephem derivatives, processes for the preparation of the cephem derivatives and the use of the cephem derivatives for combating bacterial infections.

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