Acyl derivatives

Details Acyl derivatives Acyl derivatives

1981-09-28

1984-07-03

Gerstl, Robert

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544 25, 544 27, 544 28, 548100, 424246, C07D 5156, A61K 31545

Patent

active

044580720

ABSTRACT:
There are presented compounds of the formula ##STR1## wherein R.sup.1 is one of the 3-substituents usable in cephalosporin chemistry, R.sup.2 is hydrogen, lower alkyl or COOR.sup.3 -lower alkyl, wherein R.sup.3 is hydrogen, a cation of a base or a readily hydrolyzable ester group, and X is sulphur, oxygen or one of the groups --SO-- and --SO.sub.2 --, and the readily hydrolyzable esters, readily hydrolyzable ethers and salts of these compounds and hydrates of the compounds of formula I or of their esters, ethers and salts, also presented are methods for the manufacture of these compounds as well as compounds used in their manufacture.

REFERENCES:
patent: 4200575 (1980-04-01), Numata
patent: 4341775 (1982-07-01), Takaya

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