申请人:Beecham Group Limited
公开号:US04347181A1
公开(公告)日:1982-08-31
Compounds of the formula ##STR1## which are intermediates for producing antibacterial and .beta.-lactamase inhibiting compounds of the formula ##STR2## wherein R.sub.1 is alkyl of 1 to 6 carbon atoms, unsubstituted or substituted with hydroxy, amino, nitro, alkanoylamido of 1 to 6 carbon atoms, benzyloxycarbonylamido or p-nitrobenzyloxycarbonylamido; trityl; phenyl; or phenyl substituted by one or more members selected from the group consisting of halo, alkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, amino, alkanoylamido of 1 to 6 carbon atoms, benzyloxycarbonylamido or p-nitrobenzyloxycarbonylamido; R is alkyl of 1 to 6 carbon atoms, benzyl, p-nitrobenzyl, p-methoxybenzyl, phenacyl, p-bromophenacyl, 2,2,2-trichloroethyl, phthalidyl, phthalimidomethyl, .alpha.-ethoxycarbonyloxyethyl or alkanoyloxymethyl of 1 to 6 carbon atoms, and G is hydrogen, alkyl or alkenyl, said alkyl and alkenyl being unsubstituted or substituted with hydroxy, oxy, methoxycarbonyl, phenyl or phenyl substituted with alkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, nitro or halo.
式为##STR1##的化合物是生产抗菌和β-内酰胺酶抑制剂化合物的中间体,其中R.sub.1是1至6个碳原子的烷基,未取代或取代为羟基,氨基,1至6个碳原子的烷酰胺基,苄氧羰胺基或对硝基苄氧羰胺基;三苯甲基;苯基;或苯基取代为卤素,1至6个碳原子的烷基,1至6个碳原子的烷氧基,氨基,1至6个碳原子的烷酰胺基,苄氧羰胺基或对硝基苄氧羰胺基中的一种或多种成员的群;R是1至6个碳原子的烷基,苄基,对硝基苯甲基,对甲氧基苯甲基,苯乙酰基,对溴苯乙酰基,2,2,2-三氯乙基,邻苯二甲酰基,邻酰胺基甲基,α-乙氧羰酰氧乙基或1至6个碳原子的烷酰氧甲基,G是氢,烷基或烯基,所述烷基和烯基未取代或取代为羟基,氧基,甲氧羰基,苯基或苯基取代为1至6个碳原子的烷基,1至6个碳原子的烷氧基,硝基或卤素。