摘要:
R1 is hydrogen, lower alkyl or cyclo-lower alkyl; R2 is a salt forming metal, lower alkyl or cyclo-lower alkyl; R3 is lower alkyl or phenyl-lower alkyl; and X is hydrogen, hydroxy or lower alkanoyloxy, are useful as antibacterial agents.
wherein R is hydrogen, lower alkyl, trimethylsilyl alkali metal or
Dithiocarbonylthio cephalosporin derivatives of the formula
摘要:
New 2-(thiocarbonylamino)acetamidocephalosporanic acid compounds of the following general formula, and their salts,
WHEREIN R is hydrogen, lower alkyl, aralkyl, a salt forming ion or the group
R1 is hydrogen, lower alkyl, lower alkenyl, cyclo-lower alkyl, unsaturated cyclo-lower alkyl, aryl, aralkyl or a heterocyclic group; R2 is lower alkyl, lower alkoxy-lower alkyl, lower alkylthio-lower alkyl, aryl, aralkyl or a heterocyclic group, R3 is lower alkyl, aryl or aralkyl and X is hydrogen, hydroxy, lower alkanoyloxy, aroyloxy, aralkanoyloxy, the radical of a nitrogen base, a quaternary ammonium radical or together X and R represent a bond linking carbon and oxygen in a lactone ring; are useful as antibacterial agents.
摘要:
THIS INVENTION RELATES TO CERTAIN NEW 2,4-DISUBSTITUTED6-AMINOQUINAZOLINES AND THE 2,4-DISUBSTITUTED-6-NITROQUINAZOLINES FROM WHICH THEY ARE PRODUCED. THE FORMER ARE USEFUL AS ANTI-INFLAMMATORY AGENTS.
摘要:
R4 is lower alkyl, phenyl or phenyl-lower alkyl; and X is hydrogen, lower alkoxy, lower alkanoyloxy, lower alkylmercapto, the radical of a nitrogen base, or certain heterocyclic thio moieties; are disclosed. They are useful as antibacterial agents.
R1 is hydrogen, lower alkyl or phenyl-lower alkyl; R2 is hydrogen, lower alkyl, phenyl, hydroxyphenyl, thienyl, furyl, or pyridyl; R3 is hydrogen, lower alkyl, phenyl-lower alkyl, a salt forming ion, trimethylsilyl, benzhydryl, or
WHEREIN A is either
1,2,4-Oxadiazolonylacetyl penicillins and cephalosporins of the general formula
摘要:
WHEREIN R1 is tetrazolylmethyl or (lower alkyl)tetrazolylmethyl; R2 is hydrogen or lower alkyl; R3 is lower alkyl; and X is thiadiazolylthio or (lower alkyl)thiadiazolylthio. They are useful as antibacterial agents.
New acylthiomethyl esters of cephalosporins have the formula
摘要:
Amino substituted dithiocarbonylthioacetylcephalosporins of the general formula R1 is hydrogen, lower alkyl, aralkyl, aryl or certain heterocyclic groups; R2 and R3 each is hydrogen or lower alkyl; R4 is lower alkyl, aryl or aralkyl; R5 is hydrogen or lower alkyl; R6 is hydrogen, cycloalkyl, lower alkyl; or together R5 and R6 complete certain nitrogen heterocyclics; X is hydrogen, hydroxy, lower alkanoyloxy, aroyloxy, aralkanoyloxy, SR7, OR7, the radical of a nitrogen base, a quaternary ammonium radical, or together X and R represent a bond linking carbon and oxygen in a lactone ring; R7 is lower alkyl; and n is 1, 2, 3 or 4; are useful as antibacterial agents.
WHEREIN R is hydrogen, lower alkyl, aralkyl, tri(lower alkyl)silyl, tri(lower alkyl)stannyl, a salt forming ion or the group
摘要:
THIS INVENTION RELATES TO NEW, IMPROVED ANTIMICROBIAL AGENTS OF THE FORMULA
3-((5-(NO2-)FUR-2-YL)-(CH=CH)N-),5-(R1-N(-R2)-)-
1,2,4-OXADIAZOLE
WHEREIN R1 AND R2 EACH REPRESENT HYDROGEN, ALKYL, HYDROXY-ALKYL OR ACYL OR TOGETHER WITH THE NITROGEN ATOM TO WHICH THEY ARE ATTACHED FORM A 3 TO 6 MEMBERED HETEROCYCLIC RING WHICH MAY ALSO CONTAIN OXYGEN OR SULFUR, AND WHEREIN N IS 0, 1 OR 2.