Intermediates for cephem compounds

Details Intermediates for cephem compounds Intermediates for cephem compounds

1994-11-29

1996-07-02

Rizzo, Nicholas

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540222, C07D50118

Patent

active

055323545

ABSTRACT:
Compounds of the formula: ##STR1## wherein R is a group of the formula: ##STR2## in which R.sup.3 and R.sup.4 are each lower alkyl or R.sup.3 and R.sup.4 are linked together to form C.sub.3 -C.sub.6 alkylene, A is lower alkylene, and R.sup.5 is hydroxy or a protected hydroxy group;
or a group of the formula: ##STR3## in which R.sup.6 is lower alkyl, R.sup.7 and R.sup.8 are each hydroxy or a protected hydroxy group, and Y is N or CH, and salts thereof are intermediates for cephem compounds which show antimicrobial activities and which are useful in the treatment of microbial infections.

REFERENCES:
patent: 5244890 (1993-09-01), Yamanaka et al.
patent: 5254679 (1993-10-01), Bradbury et al.

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