申请人:Beecham Group Limited
公开号:US04138403A1
公开(公告)日:1979-02-06
Compounds of the formula ##STR1## and salts and esters thereof wherein R.sub.1 is hydrogen, alkyl of 1 to 4 carbon atoms, phenyl, alkenyl of 2 to 4 carbon atoms, alkynyl of 2 to 4 carbon atoms, acyl of 1 to 4 carbon atoms, a carboxylic acid group or ester thereof of 1 to 7 carbon atoms, or alkyl of 1 to 4 carbon atoms substituted by 1 or 2 halogen atoms, hydroxyl, substituted hydroxyl, amino, protected amino, substituted thio of 1 to 7 carbon atoms, substituted sulphinyl of 1 to 7 carbon atoms, substituted sulphonyl of 1 to 7 carbon atoms, or by a carboxylic acid group or ester thereof of 1 to 7 carbon atoms; R.sub.2 is hydrogen or alkyl of 1 to 4 carbon atoms, or is joined to R.sub.1 to form a cycloalkyl group of 3 to 6 carbon atoms; R.sub.3 is hydrogen, chlorine or bromine; and R.sub.4 is hydrogen, halogen, azido or amino; provided that when R.sub.4 is azido, R.sub.3 is hydrogen and R.sub.1 is methyl, R.sub.2 is not methyl, and that when R.sub.2 R.sub.3 and R.sub.4 are hydrogen and R.sub.1 is hydroxyethyl or an acyl derivative thereof, the compound does not have the (2R, 3S, 5R) stereochemistry; inhibit certain .beta.-lactamate enzymes and are useful in antiseptic and disinfectant solutions.
式为##STR1##的化合物及其盐和酯,其中R.sub.1为氢、1至4个碳原子的烷基、苯基、2至4个碳原子的烯基、2至4个碳原子的炔基、1至4个碳原子的酰基、1至7个碳原子的羧酸基或其酯、1至4个碳原子的烷基,被1或2个卤素原子、羟基、取代羟基、氨基、保护氨基、1至7个碳原子的取代硫醚、1至7个碳原子的取代磺酰基、1至7个碳原子的取代磺酸基或1至7个碳原子的羧酸基或其酯取代的1至4个碳原子的烷基取代;R.sub.2为氢或1至4个碳原子的烷基,或与R.sub.1结合形成3至6个碳原子的环烷基;R.sub.3为氢、氯或溴;R.sub.4为氢、卤素、叠氮基或氨基;但当R.sub.4为叠氮基时,R.sub.3为氢且R.sub.1为甲基,R.sub.2不是甲基;当R.sub.2、R.sub.3和R.sub.4为氢且R.sub.1为羟乙基或其酰衍生物时,该化合物不具有(2R,3S,5R)立体化学构型;抑制某些β-内酰胺酶,可用于抗菌和消毒溶液中。