摘要:
The benzazole compounds of this invention can be represented by the following formula [I]: ##STR1## wherein R.sup.1 is aryl or a heterocyclic group, each of which may have suitable substitutent(s),R.sup.2 is hydroxy, mercapto, lower alkylthio, sulfo, lower alkyl, amino or substituted amino,R.sup.3 is hydrogen, halogen or lower alkoxy,A is lower alkenylene, lower alkylene optionally substituted with hydroxy, or a group of the formula:--A'--Q--A"--, in which A' is lower alkylene, A" is lower alkylene or a single bond, and Q is O or S, andX is O, S, NH or N--R.sup.4, in which R.sup.4 is lower alkyl,More particularly, it relates to benzazole compounds and pharmaceutically acceptable salts thereof which have antiulcer activity and H.sub.2 -receptor antagonism, to processes for the preparation thereof, to a pharmaceutical composition comprising the same and to a method for the treatment of ulcers in human being or animals.
摘要:
A compound of the formula: ##STR1## wherein R.sup.1 is pyridyl,R.sup.2 is hydrogen, lower alkyl or hydroxy (lower) alkyl,R.sup.3 is hydrogen, hydroxy or lower alkyl, andR.sup.4 is aryl optionally substituted with substituent(s) selected from the group consisting of lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl, nitro, amino, substituted amino, hydroxy, lower alkoxy, lower alkynyloxy, substituted or unsubstituted ar(lower)alkoxy, halogen, halo(lower)alkyl, carboxy and esterified carboxy,and a pharmaceutically acceptable salt thereof, processes for the preparation thereof and pharmaceutical composition comprising the same.
摘要:
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.
摘要:
The invention relates to cephem compounds of high antimicrobial activity of the formula: ##STR1## wherein R.sup.1 is amino or acylamino,R.sup.2 is lower alkyl, andY is CH or N.
摘要:
The invention relates to cephem compounds of high antimicrobial activity of the formula: ##STR1## wherein R.sup.1 is amino or acylamino,R.sup.2 is lower alkyl, andY is CH or N.
摘要:
This invention relates to a new cephem compound of the formula: ##STR1## wherein R.sup.1 is amino or a substituted amino group;R.sup.2 is carboxy or a protected carboxy group;R.sup.3 is a tetrazolyl group having a lower alkynyl group; andX is --S-- or ##STR2## and pharmaceutically acceptable salts thereof, of high antimicrobial activity.
摘要:
The invention relates to new cephem compounds of high antimicrobial activity, the compounds having the formula ##STR1## wherein R.sup.1 is amino or a protected amino groupR.sup.2 is a saturated 4 to 8-membered heteromonocyclic group containing one sulfur atom;R.sup.3 is carboxy or a protected carboxy group andR.sup.4 is hydrogen, lower alkyl, or a group of the formula:--CH.sub.2 R.sup.4awhereR.sup.4a is acyloxy a heterocyclicthio group which may have suitable substituents or pyridinio which may have suitable substituents with the proviso that R.sup.3 is COO.sup.- when R.sup.4a is pyridinio which may have suitable substituents.
摘要:
This invention relates to a new cephem compound of the formula: ##STR1## wherein R.sup.1 is amino or a substituted amino group;R.sup.2 is carboxy or a protected carboxy group;R.sup.3 is a tetrazolyl group having a lower alkynyl group; andX is --S-- or ##STR2## and pharmaceutically acceptable salts thereof, of high antimicrobial activity.
摘要:
This invention relates to new compounds of high antibiotic activity of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group; andR.sup.2 is C.sub.2 to C.sub.6 alkyl.