申请人:E. R. Squibb & Sons, Inc.
公开号:US03960850A1
公开(公告)日:1976-06-01
3-Heterothio derivatives of [(alkoxycarbonyl)oxyacetyl]cephalosporins which have the formula ##SPC1## tri(lower Wherein R.sub.1 is hydrogen, lower alkyl, phenyl, phenyl-lower alkyl or certain heterocyclic groups; R.sub.2 is lower alkyl; R.sub.3 is hydrogen, lower alkyl, tri(lower alkyl)silyl, tri(lowe alkyl)stannyl, a salt forming ion, or ##EQU1## R is lower alkyl, phenyl, or phenyl-lower alkyl; R.sub.4 is a five-membered nitrogen and sulfur or oxygen-containing ring system; are useful as antibacterial agents.
3-[(烷氧羰基)氧乙酰]头孢菌素的3-杂硫衍生物,其化学式为##SPC1## tri(lower,其中R.sub.1为氢、烷基、苯基、苯基烷基或某些杂环基团;R.sub.2为烷基;R.sub.3为氢、烷基、三(烷基)硅基、三(烷基)锡基、盐形成离子,或##EQU1## R为烷基、苯基或苯基烷基;R.sub.4为含有五元氮和硫或氧的环系统;可用作抗菌剂。