This invention relates to novel 7-thiadiazol-oxyimino-3-cephem and cepham 4-carboxylic acid compounds of high antimicrobial activity.
这项发明涉及具有高抗微生物活性的新型7-噻二唑氧肟基-3-头孢菌素和头孢菌素-4-羧酸化合物。
7-Amino-thiadiazole oxyimino derivatives of cephem and cepham compounds
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04381299A1
公开(公告)日:1983-04-26
This invention relates to new cephem and cepham compounds of high antimicrobial activity, and more particularly to new 7-amino-thiadiazole oxyimino derivatives of cephem and cepham compounds.
Compounds of the formula [I] ##STR1## in which R.sup.1 is hydroxy, a protected hydroxy or lower alkoxy group, R.sup.2 is carboxy or an easily eliminable esterified carboxy group and R.sup.3 is pyridyl, and pharmaceutically acceptable salts thereof, having antimicrobial and .beta.-lactamase inhibiting properties, and pharmaceutical compositions containing the same.
7.alpha.-Hydroxyamino-7.beta.-[2-substituted-2-(acylamino)acetamido]cephalo sporin antibiotics, pharmaceutically-acceptable salts and in vivo hydrolyzable esters thereof, a method of treating susceptible infections therewith, and intermediates therefor.
7-(.alpha.-Acylamino-.alpha.-phenyl or thienylacetamido) cephalosporin
申请人:Sumitomo Chemical Company, Limited
公开号:US04165373A1
公开(公告)日:1979-08-21
A compound of the formula (I): ##STR1## wherein A is a monocyclic or polycyclic heteroaromatic ring containing at least one nitrogen atom as a hetero atom, which may be unsubstituted or substituted with one or more substituents; R is a phenyl group which can be unsubstituted or substituted or a thienyl group; T is (1) a -CH.sub.2 -S-Het group, where Het is a tetrazolopyridazine ring, a triazolopyridazine ring, or a triazolopyridine ring, (2) ##STR2## WHERE R.sub.1 and R.sub.2, which may be the same or different, each is a hydrogen atom or a (C.sub.1 -C.sub.4)alkyl group, (3) a -CH.sub.2 N.sub.3 group or (4) a --CH.sub.2 S--D group in which D is a group selected from the group consisting of ##STR3## where m and n each is 0 to 3; with the proviso that (A) WHEN T is the --CH.sub.2 SD group wherein D is as defined above then the HO-A- moiety is a ##STR4## where B represents the non-metallic atoms necessary to complete a pyridine ring, a pyrimidine ring or a pyrazoline ring, each of which may be unsubstituted or subsituted, and (b) when T is the --CH.sub.2 N.sub.3 group, then R is a substituted phenyl group And the non-toxic, pharmaceutically acceptable salts thereof, processes for preparing the same, and anti-microbial compositions containing the same.