Cephem derivatives

Details Cephem derivatives Cephem derivatives

1992-04-27

1994-10-25

Rizzo, Nicholas

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540222, 540225, 540228, 540230, C07D50104, A61K 31545

Patent

active

053590589

ABSTRACT:
A cephalosporin compound substituted in the 7-position with a (cyclo)alkylideneammonio group of formula (II) ##STR1## wherein X' is an anion from an acid HX, R.sub.1 and R.sub.2 are individually a C.sub.1 -C.sub.16 alkyl group, or R.sub.1 and R.sub.2 together with the carbon atom to which they are attached form a cycloalkylidene ring with up to 8 carbon atoms and a process for the preparation which compounds are useful intermediates.

REFERENCES:
patent: 4695627 (1987-09-01), Verweij et al.
patent: 4921954 (1990-05-01), Witkamp
patent: 5164494 (1992-11-01), Witkamp et al.

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