Abstract: The invention relates to novel cephem compounds of high antimicrobial activity of the formula: ##STR1## wherein R.sup.1 is amino or lower alkanoylamino,R.sup.2 is lower alkyl, lower alkynyl, carboxy (lower) alkyl or esterified carboxy (lower) alkyl,R.sup.3 is amino or lower alkanoylamino, andX is hydrogen or halogen; and pharmaceutically acceptable salts thereof.

Abstract: The invention relates to cephem compounds of high antimicrobial activity, of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group;R.sup.2 is lower alkyl which may be substituted with one carboxy, lower alkenyl, lower alkynyl, cyclo (lower) alkyl or cyclo (lower) alkenyl;R.sup.3 is lower alkylamino, N-(lower) alkanoyl (lower) alkylamino, di (lower) alkylamino, sulfo (lower) alkylamino, hydroxy (lower) alkylamino, N-(lower) alkanoylhydroxy (lower) alkylamino, alkanoyloxy (lower) alkyl, alkenoyloxy (lower) alkyl, lower alkoxy (lower) alkoxy (lower) alkyl, di (lower) alkylamino (lower) alkyl, lower alkylthio (lower) alkyl, lower alkylthio, lower alkoxy, lower alkoxy (lower) alkoxy, hydroxy (lower) alkoxy, lower alkanesulfonyl (lower) alkyl, hydroxy (lower) alkylthio, di (lower) alkylamino (lower) alkylthio, tetrazolyl, tetrazolylthio, tetrazolylthio (lower) alkyl or dihydrotriazinylthio (lower) alkyl substituted with oxo, hydroxy and lower alkyl; andR.sup.

Abstract: The present invention relates to new 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and pharmaceutically acceptable salts thereof which have antimicrobial activities and to processes for preparation thereof, to pharmaceutical compositions comprising the same, and to a method of using the same therapeutically in the treatment of infectious diseases in humans and animals.This division relates to intermediate compounds, namely amino or amido-thiazolyl, substituted oxyimino disubstituted acetic acid of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group;R.sup.2 is --CONH--R.sup.5, --NHCO--R.sup.5, or ##STR2## R.sup.5 is aryl or heterocyclic, either of which may be substituted, R.sup.6 is hydrogen or lower alkyl, andA is lower alkylene, or a salt thereof.

Abstract: This invention relates to cephem compounds of high antimicrobial activity of the formula ##STR1## wherein R.sup.1 is amino or a protected amino group;R.sup.2 is hydrogen, lower aliphatic hydrocarbon group selected from lower alkyl, alkenyl and alkynyl which may be substituted with carboxy, protected carboxy, lower alkylthio or phenyl, cyclo(lower)alkyl, or cyclo(lower)alkenyl;R.sup.3 is lower alkyl which may be substituted with carboxy, carbamoyl, hydroxy, amino or protected amino;R.sup.3a is hydrogen, lower alkyl or amino; andR.sup.3b is hydrogen or lower alkyl; andpharmaceutically acceptable salts thereof.

Abstract: New phospholipid derivatives represented by the formula: ##STR1## wherein R.sup.1 is alkyl, alkoxy, alkylthio, ar(lower)alkoxy or alkanoylamino; R.sup.2 is lower alkyl or ar(lower)alkyl; n is an integer of 0 or 1; A is lower alkylene; R.sup.3 is pyridinio or a group of the formula: ##STR2## in which R.sup.5, R.sup.6 and R.sup.7 are each hydrogen or lower alkyl; and R.sup.4 is hydrogen or lower alkyl; and pharmaceutically acceptable salt thereof, which exhibit anti-hypertensive activity.

Abstract: New phosphate derivatives represented by the formula: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are each hydroxy, alkoxy, alkanoylamino or protected hydroxy;A is lower alkylene;R.sup.4 is alkylammonio, cyclic ammonio or cyclic amino; andR.sup.5 is oxido anion or hydroxy;and pharmaceutically acceptable salt thereof, which exhibit antitumor activity.

Abstract: This invention relates to tetrahydrofuran-carboxylic acid derivatives, of antimicrobial activity, of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group,R.sup.2 is amino or acylamino andR.sup.3 is carboxy or a protected carboxy groupor a pharmaceutically acceptable salt thereof.

Abstract: This invention relates to novel 7-acylaminocephalosporanic acid derivatives of high antimicrobial activity, to processes for their preparation, and to pharmaceutical compositions comprising said derivatives, said derivatives being of the formula: ##STR1## wherein R.sup.1 is amino or protected amino,R.sup.2 is dialkanoyloxy(lower)alkyl; alkyl having one or more substituents selected from the group consisting of hydroxy, protected hydroxy, alkoxy, carboxy, protected carboxy, cycloalkylcarbonyloxy and heterocyclic group; lower alkoxycarbonyloxy(lower)alkyl; azido(lower)alkoxycarbonyloxy(lower)alkyl; aroyloxy(lower)alkyl; higher alkanoyloxy(lower)alkyl; phthalidyl; or phthalidylidene(lower)alkyl,R.sup.3 is lower alkyl,Y is thio (--S--) or sulfinyl (--S--), and the dotted line represents 2- or 3-cephem nuclei.

Abstract: New antimicrobial azetidinone derivatives and their salt of the formula: ##STR1## wherein R.sub.1 amino or acylamino, and A is selected from a variety of groups.

Abstract: This invention relates to thiadiazolyl compounds useful as intermediates in the preparation of novel cephem compounds of high antimicrobial activity.

Abstract: This invention relates to novel cephem compounds of high antimicrobial activity of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group;R.sup.2 is hydrogen, lower aliphatic hydrocarbon group which may be substituted with suitable substituents(s), cyclo(lower)alkyl or cyclo(lower)alkenyl; andR.sup.3 is a thiazolio group which may be substituted with suitable substituents(s) or a pyridinio group substituted with substituent(s) selected from the group consisting of halogen, cyano, hydroxy, amino, acylamino, lower alkanoyl, hydroxycarbamoyl, alkylcarbamoyl, carboxy, protected carboxy, lower alkyl, hydroxy(lower)alkyl, sulfo(lower)alkyl, protected amino(lower)alkyl, amino(lower)alkyl, carboxy(lower)alkyl and hydroxyimino(lower)alkyl.

Abstract: This invention relates to novel cephem compounds of high antimicrobial activity, to processes for preparation of said compounds, and to pharmaceutical compositions comprising said compounds, the novel cephem compounds being of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group;R.sup.2 is hydrogen, lower aliphatic hydrocarbon group which may be substituted with a substituent selected from the group consisting of carboxy and protected carboxy, cyclo (lower) alkyl or cyclo (lower) alkenyl; andR.sup.

Abstract: This invention relates to novel cephem compounds of high antimicrobial activity of the formula ##STR1## wherein R.sup.1 is amino or a protected amino,R.sup.2 is lower alkyl,R.sup.3 is hydrogen or lower alkyl,R.sup.4 is hydrogen, acyloxy(lower)alkyl or acylthio(lower)alkyl andR.sup.5 is carboxy or a protected carboxy.

Abstract: A process for producing a 2-cephem or 3-cephem derivative compound of the formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted amino radical and R.sub.4 represents hydrogen or a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and the dotted line indicates the alternate bond structure providing 3-cephem or 2-cephem, which comprises:reacting a halogenated derivative selected from the group consisting of a halogenated penam derivative having the formula: ##STR2## a halogenated cephem derivative of the formula: ##STR3## wherein X represents a halogen atom, R.sub.3 represents a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and R.sub.1 is as defined above, or mixtures thereof with a dehydrohalogenoic acid reagent.

Abstract: This invention relates to new cephem compounds of antimicrobial activity, of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group;R.sup.2 is hydrogen, lower aliphatic hydrocarbon group which may be substituted with suitable substituent(s), cyclo(lower)alkyl or cyclo(lower)alkenyl; andR.sup.3 is thiazolio group which may be substituted with suitable substituent(s) or a pyridinio group substituted with substituent(s) selected from the group consisting of halogen, cyano, hydroxy, amino, acylamino, lower alkanoyl, hydroxycarbamoyl, alkylcarbamoyl, carboxy, protected carboxy, lower alkyl, hydroxy(lower)alkyl, sulfo(lower)alkyl, protected amino(lower)alkyl, amino(lower)alkyl, carboxy(lower)alkyl and hydroxyimino(lower)alkyl; and pharmaceutically acceptable salts thereof.

Abstract: This invention relates to new cephem and cepham compounds of high antimicrobial activity of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino,R.sup.2 is hydrogen, acyl, aryl which may be substituted with suitable substituent(s), lower alkyl substituted with suitable substituent(s), lower alkenyl, lower alkynyl, cycloalkyl which may be substituted with suitable substituent(s), cyclo(lower)alkenyl, or S or O containing 5-membered heterocyclic group substituted with oxo group(s),R.sup.3 is hydrogen or lower alkyl,R.sup.4 is hydrogen, acyloxy(lower)alkyl; acylthio(lower) alkyl; pyridinium(lower)alkyl which may be substituted with suitable substituent(s); a heterocyclicthio(lower)alkyl which may be substituted with suitable substituent(s); lower alkyl;l halogen; hydroxy; thiazolium(lower)alkyl which may be substituted with suitable substituent(s); or lower alkoxy; R.sup.5 is carboxy or a protected carboxy, wherein R.sup.5 is COO.sup.- when R.sup.

Abstract: This invention relates to a process for preparing an oxidized penam derivative of the formula: ##STR1## wherein R.sub.1 represents an amino or protected amino radical, andR.sub.3 represents a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, wherein a penam derivative of the formula: ##STR2## is oxidized with an oxidizing agent selected from the group consisting of hydrogen peroxide, peracids, hydroperacids, and salts thereof, the improvement which comprises conducting said oxidation in the presence of a catalytic amount of a Group Vb or VIb of the Periodic Table metal compound.

Abstract: This invention relates to novel compounds having antimicrobial activity of the formula ##STR1## in which R.sup.1 is amino or a protected amino group,R.sup.2 is cyclo(lower)alkyl, cyclo(lower)alkenyl, lower alkyl, lower alkynyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl or lower alkylthio(lower)alkyl, andY is hydrogen, amino or a protected amino group, and pharmaceutically acceptable salts thereof.

Abstract: This invention relates to novel cephem compounds, useful as intermediates in the formation of novel 7-aminothiadiazol alkoxyimino acetamido cephem compounds of high antimicrobial activity, said novel intermediates being 7-aminothiadiazol alkoxyimino acetamido cephem derivatives with substitution in the 3-position of the cephem nucleus of lower alkanoyl (lower) alkanoyloxy grouping.

Abstract: This invention relates to novel benzothiazine derivatives having therapeutic effect on autoimmune diseases, to processes for preparation of such derivatives, and to pharmaceutical compositions containing such derivatives, the derivatives having the formula: ##STR1## wherein R.sup.1 is lower alkyl which may have one or more substituents selected from carboxy, aryl and carboxy(lower)cycloalkyl; aryl which may have one or more substituents selected from halogen, lower alkyl, halo(lower)alkyl and lower alkoxy; haloarylamino; or heterocyclic group;R.sup.2 is hydrogen, lower alkyl, lower alkylamino(lower)alkyl, aryl or ar(lower)alkyl;R.sup.3 is hydrogen, halogen, lower alkyl or lower alkoxy; andn is an integer 0 to 2.