摘要:
Anti-bacterially active penicillin 1,1-dioxides of the formula ##STR1## or a salt thereof, in which R.sub.1 denotes a hydrogen atom or an ester-forming radical,R.sub.2 denotes a hydrogen atom or optionally substituted alkoxy group,R.sub.3 denotes a hydrogen atom, COR.sub.4, SO.sub.2 -alkyl, SO.sub.2 -aryl or an optionally substituted alkyl group, but R.sub.2 and R.sub.3 do not simultaneously denote hydrogen atoms, andR.sub.4 denotes a hydrogen atom or any of many possible organic radicals.The compounds are also inhibitors of .beta.-lactamases so they can be used in conjunction with .beta.-lactamase-susceptible antibiotics. They are useful in fighting bacterial infection, in promoting animal growth and in preserving various materials.
摘要:
Compounds represented by the following formula ##EQU1## wherein A is a substituted or unsubstituted heterocyclic radical and T is a C.sub.2 -C.sub.5 alkyl, alkenyl, cyclopropylmethyl, cyclobutylmethyl or cyclopentyl groupA process for their preparation and novel intermediates therefor are disclosed. These compounds are useful antibiotics.
摘要:
A-PHENOXYALKYL PENICILLIN AND SALTS THEREOF ARE PRODUCED BY REACTING 6-AMINOPENICILLANIC ACID OR SALTS THEREOF WITH A NOVEL N, N-DIACYL COMPOUND OF THE FORMULA
PHENYL-O-C(-R1)(-R2)-CO-N(-R)-CO-AR
IN WHICH R IS ALKYL, CYCLOALKYL, ARYL, SUBSTITUTED ARYL, ARALKYL, SUBSTITUTED ARALKYL OR PHENYLALKENYL, AR IS PHENYL, PHENOXYALKYL, OR SUBSTITUTED PHENYL, AND R1 AND R2 ARE HYDROGEN OR LOWER ALKYL.