Cephalosporin derivatives

Details Cephalosporin derivatives Cephalosporin derivatives

1979-06-25

1981-09-29

Coughlan, Jr., Paul M.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544 26, C07D50156

Patent

active

042924286

ABSTRACT:
There is presented cephalosporin derivatives which are the readily hydrolysable esters and ethers of compounds of the general formula ##STR1## wherein R represents furyl, thienyl or phenyl optionally substituted by halogen, hydroxy, lower alkoxy or lower alkyl, R.sub.1 represents lower alkyl or aminocarbonylmethyl and X represents a group of the formula ##STR2## in which one of the two symbols R.sub.2 and R.sub.3 represents hydrogen and the other represents lower alkyl and R.sub.4 represents lower alkyl,
as well as salts of said esters and ethers and hydrates of said esters, ethers and salts.

REFERENCES:
patent: 4074047 (1978-02-01), Foxton et al.
patent: 4091211 (1978-05-01), Montavon et al.
patent: 4178443 (1979-12-01), Montavon et al.

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