摘要:
A process is provided which yields derivatives of cephalosporins and penicillins. The process starts with 7-aminodecephalosporanic acid or 6-APA and reacts with a carbonyl containing compound to form a Schiff's base (imino) adduct. This latter compound is then treated with a defined reactant yielding a novel Schiff's base adduct having a side chain on the carbon adjacent to the imino-nitrogen. The amino moiety can be regenerated and further reacted to form end compounds which are active against both gram-positive and gram-negative bacteria.
摘要:
Disclosed are substituted azetidinones (1) which are useful in the preparation of 1-carba-2-penem-3-carboxylic acids (I): ##STR1## wherein R is hydrogen or a blocking group and R.sup.1, R.sup.2 and R.sup.3 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, aryl, and aralkyl. Such 1-carba-2-penem-3-carboxylic acids and their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics.
摘要:
Disclosed are 3-(2-aminoethylthio)-6-amido-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acids having the structure: ##STR1## wherein R.sup.1 is hydrogen or acyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
Disclosed are 3- and 6-substituted 7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acids having the structure: ##STR1## wherein R.sup.6, R.sup.7 and R.sup.8 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, alkenyl, aryl and aralkyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
Amides and thioates of (-)(cis-1,2-epoxypropyl)-phosphonic acid and phosphonothioic acid are prepared by converting (-)(cis-1,2-epoxypropyl)phosphonic acid or phosphonothioic acid or a salt thereof to an acid halide and reacting the acid halide with an amine, and by reacting the phosphonic acid or a salt thereof with an amine in the presence of a carbodiimide. The novel (-)(cis-1,2-epoxypropyl)phosphonic and phosphonothioic amides are active antibacterial agents.
摘要:
Disclosed are 3-(2-aminoethylthio)-6-amido-7-oxo-1-azabicyclo [3.2.0]hept-2-ene-2-carboxylic acids having the structure: ##STR1## wherein R.sup.1 is hydrogen or acyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
Disclosed are S-oxides of 3-substituted thio-6-amido-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acids having the structure: ##STR1## wherein: n is 1 or 2; R.sup.1 is hydrogen or acyl; and R.sup.8 is, inter alia, independently selected from the group consisting of alkyl, alkenyl, aryl and aralkyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
Disclosed are 2-, 5- and 6-substituted-1-carbadethiapen-2-em-3-carboxylic acids having the structure: ##STR1## wherein R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are, inter alia, independently selected from the group consisting of hydrogen, (R.sup.9 is not hydrogen), alkyl, alkenyl, aryl and aralkyl. Such compounds, as well as their pharmaceutically acceptable salt, ester and amide derivatives, are useful as antibiotics. Also disclosed are processes for the preparation of such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
Disclosed are 2- and 6-substituted-1-carbadethiapen-2-em-3-carboxylic acids having the structure: ##STR1## wherein R.sup.6, and R.sup.7 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, alkenyl, aryl and aralkyl; A is a direct, single bond connecting the indicated S and C atoms, or A is a cyclic or acyclic connecting group selected, inter alia, from alkyl, cyclalkyl, aryl, heteroaryl, heteroalkyl; R.sup.1 and R.sup.2 inter alia, independently selected from hydrogen, alkyl, aryl; additionally, said carbamimidoyl is characterized by cyclic structures achieved by the joinder of the two nitrogen atoms via their substituents and by their joinder to connecting group A; additionally, "carbamimidiums" are disclosed by quarternization of one of the nitrogen atoms of said carbammidoyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds; pharamaceutical compositions comprising such compounds; and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
Disclosed are 3-substituted-6-(1'-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acids having the structure: ##STR1## wherein R.sup.8 is, inter alia, selected from the group consisting of hydrogen, alkyl, alkenyl, aryl and aralkyl. Such compounds as well as their pharmaceutically acceptable O- and carboxyl derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.