Disclosed are 2-(syn)-hydroxyimino-acetamide derivatives of the formula: ##STR1## wherein Y is hydrogen, hydroxyl, an acyloxy, carbamoyloxy, a quaternary ammonium or a nitrogen-containing heterocyclic ring-substituted thio group; or pharmaceutically acceptable salts or esters thereof are useful as antibacterial agents. Also disclosed are processes for producing them.
Novel cephalosporins having a dithioacetamido substituent at the 7-position are prepared. These compounds have antibacterial activity.
制备了在7位具有二硫代乙酰胺基取代基的新型头孢菌素。这些化合物具有抗菌活性。
.DELTA..sup.3 -3-Vinyl or substituted vinyl-4-carboxy cephalosporins
申请人:Glaxo Laboratories Limited
公开号:US04107431A1
公开(公告)日:1978-08-15
The invention is concerned with .DELTA..sup.3 -4-carboxy cephalosporin antibiotics possessing a 3-vinyl or substituted 3-vinyl groups as well as with phosphorous intermediates useful in the preparation thereof.
The invention is concerned with .DELTA..sup.3 -4-carboxy cephalosporin antibiotics possessing a 3-vinyl group and having 2,2-disubstituted acetamido group at the 7-position.
7-Cyanomethylmercaptoacetamidocephalosporins, 7-cyanomethylsulfinylacetamidocephalosporins, and 7-cyanomethylsulfonylacetamidocephalosporins, which have antibacterial activity, are disclosed.