申请人:Leo Pharmaceutical Products, Ltd. A/S
公开号:US04246262A1
公开(公告)日:1981-01-20
The present invention relates to new 6.beta.-amidino-penicillanic acids of the formula: ##STR1## in which X is oxygen or sulphur, --A-- is aliphatic hydrocarbon, or a single bond, --B-- is aliphatic hydrocarbon, or a single bond; R.sub.1 and R.sub.2 stand for hydrogen, lower alkyl, phenyl or phenyl-lower alkyl; or R.sub.2 is acyl or guanyl; or R.sub.1 and R.sub.2 together with the nitrogen atom can form a monocyclic, saturated ring or represent ##STR2## in which R.sub.3 and R.sub.4 each stands for hydrogen, lower alkyl, phenyl, or phenyl-lower alkyl, or R.sub.3 and R.sub.4 together with nitrogen form a monocyclic, saturated ring; --W-- stands for ##STR3## which represent saturated, monocyclic, bicyclic or spirocyclic ring systems, respectively; salts of the compounds of formula I, and easily hydrolyzable, esters thereof, and salts of such esters; the invention further relating to methods of producing the compounds; to intermediates in their preparation; to pharmaceutical compositions containing the compounds; and to dosage units thereof, and to their use. The compounds of the present invention are active against a variety of pathogenic microorganisms, including gram-positive and gram-negative bacteria.
本发明涉及新的6.beta.-酰胺基青霉烷酸,其化学式为:##STR1## 其中X为氧或硫,--A--为脂肪烃或单键,--B--为脂肪烃或单键;R.sub.1和R.sub.2代表氢、低碳基、苯基或苯基-低碳基;或R.sub.2为酰基或鸟氨酸基;或R.sub.1和R.sub.2与氮原子一起形成单环饱和环或表示##STR2## 其中R.sub.3和R.sub.4分别代表氢、低碳基、苯基或苯基-低碳基,或R.sub.3和R.sub.4与氮形成单环饱和环;--W--代表##STR3## 分别表示饱和的、单环的、双环的或螺旋的环系统;化合物I的盐以及易水解的酯和这种酯的盐;本发明还涉及制备该化合物的方法;在其制备中的中间体;含有该化合物的制药组合物;以及其用量单位和用途。本发明的化合物对各种致病微生物具有活性,包括革兰氏阳性和革兰氏阴性细菌。