Abstract:
Antibacterial activity is exhibited by .beta.-lactams having a ##STR1## substituent in the 1-position and an acylamino substituent in the 3-position wherein Z is oxygen or sulfur, and R is alkyl, alkenyl, alkynyl, substituted alkyl, phenyl, substituted phenyl, a 5,6 or 7-membered heterocycle (R.sub.c), phenylalkyl, (substituted phenyl)alkyl, R.sub.c -alkyl or --NR.sub.a R.sub.b wherein R.sub.a and R.sub.b are the same or different and each is hydrogen, alkyl, substituted alkyl, phenyl, substituted phenyl, phenylalkyl, or (substituted phenyl)alkyl or one of R.sub.a and R.sub.b is hydrogen, alkyl, phenyl, substituted phenyl, phenylalkyl or (substituted phenyl)alkyl and the other is amino, alkanoylamino, arylcarbonylamino, alkoxycarbonylamino, alkylsulfonylamino, alkylamino, dialkylamino, phenylamino, (substituted phenyl)amino, hydroxy, cyano, alkoxy, phenyloxy, (substituted phenyl)oxy, phenylalkoxy, (substituted phenyl)alkoxy, R.sub.c, R.sub.c -alkyl, R.sub.c -alkoxy, alkylsulfonyl, alkylmethyleneamino, phenylmethyleneamino or (substituted phenyl)methyleneamino.
Abstract translation:在1-位具有取代基的β-内酰胺和3-位上的酰氨基取代基,其中Z是氧或硫,R是烷基,烯基,炔基,取代的烷基,苯基,被取代的抗菌活性表现出抗菌活性 苯基,5,6或7-元杂环(Rc),苯基烷基,(取代的苯基)烷基,R c-烷基或-NR a R b,其中R a和R b相同或不同,各自为氢,烷基,取代的烷基,苯基, 取代的苯基,苯基烷基或(取代的苯基)烷基或Ra和Rb中的一个是氢,烷基,苯基,取代的苯基,苯基烷基或(取代的苯基)烷基,另一个是氨基,烷酰基氨基,芳基羰基氨基,烷氧基羰基氨基,烷基磺酰基氨基,烷基氨基, 二烷基氨基,苯基氨基,(取代苯基)氨基,羟基,氰基,烷氧基,苯氧基,(取代的苯基)氧基,苯基烷氧基,(取代的苯基)烷氧基,Rc,Rc-烷基,Rc-烷氧基,烷基磺酰基,烷基亚甲基氨基,苯基亚甲基氨基或 苯基) 亚乙基氨基。
Abstract:
Antibacterial activity is exhibited by (3-acylamino)-2-azetidinones having in the 1-position a group of the formula ##STR1## or a salt or ester thereof wherein R.sub.5 and R.sub.6 are the same or different and each is hydrogen or alkyl.
Abstract:
Antibacterial activity and .beta.-lactamase inhibitory activity is exhibited by .beta.-lactams having a 3-acylamino substituent and in the 1-position a group having the formula ##STR1## wherein R.sub.5 is hydrogen, methyl or ethyl.
Abstract:
Cephalosporins of the formula ##STR1## wherein R is hydrogen, sodium, potassium or certain ester groups; R.sub.1 is in the .alpha.-configuration and is hydrogen or methoxy; R.sub.2 is hydrogen, ##STR2## X is hydrogen, ##STR3## R.sub.4 is hydrogen or lower alkyl; R.sub.5 is hydrogen, lower alkyl, ##STR4## --(CH.sub.2).sub.n --N--(lower alkyl).sub.2 ; R.sub.6 is hydrogen, sodium, or potassium; n is an integer from 1 to 4; are disclosed. These compounds are useful as anti-bacterial agents.
Abstract:
[(Thioalkyl)thioacetyl]cephalosporin derivatives of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, tri(lower alkyl)silyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen, lower alkyl, phenyl, thienyl or furyl; R.sub.2 and R.sub.6 each is hydrogen or lower alkyl; R.sub.3 and R.sub.5 each is lower alkyl, phenyl or phenyl-lower alkyl and R.sub.4 is hydrogen, hydroxy or lower alkanoyloxy; are useful as antimicrobial agents.
Abstract:
Carbamoylalkylureido cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen or methoxy; A is straight or branched chain alkylene of 1 to 6 carbons; R.sub.2 and R.sub.3 are independently selected from hydrogen and straight chain alkyl of 1 to 4 carbons, or R.sub.2 is hydrogen and R.sub.3 is branched chain alkyl of 3 or 4 carbons, phenyl, benzyl or phenethyl, or R.sub.2 and R.sub.3 taken together with N atom to which they are attached form ##STR3## R.sub.4 is hydrogen or lower alkyl; R.sub.5 is hydrogen, lower alkyl, cycloalkyl, cycloalkenyl, cycloalkadienyl, phenyl, phenyl-lower alkyl, substituted phenyl, substituted phenyl-lower alkyl, or certain heterocyclic groups; R.sub.6 is hydrogen or lower alkyl; R.sub.7 is lower alkyl; and X is hydrogen, lower alkanoyloxy, ##STR4## or certain heterothio groups; are disclosed. These compounds are useful as antibacterial agents.
Abstract:
Cyanoalkylureido cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen or methoxy; A is straight or branched chain alkylene or ##STR3## R.sub.2 is phenyl, 2-thienyl, or 3-thienyl; R.sub.3 is hydrogen or lower alkyl; R.sub.4 is hydrogen, lower alkyl, cycloalkyl, cycloalkenyl, cycloalkadienyl, phenyl, phenyl-lower alkyl, substituted phenyl, substituted phenyl-lower alkyl, or certain heterocyclic groups; R.sub.5 is hydrogen or lower alkyl; R.sub.6 is lower alkyl; and X is hydrogen, lower alkanoyloxy, ##STR4## or certain heterothio groups; are disclosed. These compounds are useful as antibacterial agents.
Abstract:
7.beta.-[(2-Amino-1,2-dioxoethyl)amino]acyl cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl or a salt forming ion; R.sub.1 is hydrogen, lower alkyl, saturated or unsaturated cycloalkyl, phenyl, phenyl-lower alkyl, substituted phenyl or certain heterocyclic groups; R.sub.2 is hydrogen or methoxy; R.sub.3 is hydrogen, lower alkyl or cycloalkyl; and X is hydrogen, lower alkanoyloxy, carbamoyloxy, lower alkoxy, lower alkylthio ##STR2## or certain heterothio groups, are useful as antibacterial agents.
Abstract:
Ureido cephalosporin derivatives of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen, lower alkyl, cycloalkyl, cycloalkenyl, cycloalkadienyl, phenyl, phenyl-lower alkyl, substituted phenyl or phenyl-lower alkyl, or certain heterocyclic groups; R.sub.2 is hydrogen or lower alkyl; R.sub.3 is hydrogen or methoxy; R.sub.4 is hydrogen, halogen, lower alkyl, or lower alkoxy; R.sub.5 is hydrogen or lower alkyl; R.sub.6 is lower alkyl, phenyl, or phenyl-lower alkyl; are disclosed. These compounds are useful as antibacterial agents.
Abstract:
Alkenyl and alkinylureido cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen or methoxy; R.sub.2 is lower alkenyl or alkinyl, R.sub.3 is hydrogen or lower alkyl; R.sub.4 is hydrogen, lower alkyl, cycloalkyl, cycloalkenyl, cycloalkadienyl, phenyl, phenyl-lower alkyl, substituted phenyl, substituted phenyl-lower alkyl, or certain heterocyclic groups; R.sub.5 is hydrogen or lower alkyl; R.sub.6 is lower alkyl; and X is hydrogen, lower alkanoyloxy, ##STR3## OR CERTAIN HETEROTHIO GROUPS; ARE DISCLOSED. These compounds are useful as antibacterial agents.