申请人:Sumitomo Chemical Company, Limited
公开号:US03992371A1
公开(公告)日:1976-11-16
Novel penicillins of the formula ##SPC1## Wherein ##EQU1## represents a substituted or unsubstituted benzene or nitrogen atom-containing heteroaromatic ring which may be substituted, ##EQU2## represents a pyridine, pyrazine or pyridazine ring, X represents an oxygen or sulfur atom, Y represents a hydrogen atom or a loer alkoxycarbonyl or lower alkanoyl group, and R.sub.1, R.sub.2 and R.sub.3 are each a hydrogen or halogen atom or a nitro, lower alkylamino, di(lower)alkylamino, aine, lower alkoxycarbonylamino, lower alkanoylamino, amino(lower)alkyl, lower alkyl, lower alkoxy, hydroxyl, sulfamoyl, trifluoromethyl, lower alkylthio or lower alkylsulfonyl group, excluding the cases where all of R.sub.1, R.sub.2 and R.sub.3 are hydrogen atoms and where R.sub.1 is a hydroxyl group and R.sub.2 and R.sub.3 are each a hydrogen or halogen atom, and their nontoxic, pharmaceutically acceptable salts, which can be prepared by reacting a carboxylic acid of the formula: ##EQU3## wherein ##EQU4## X and Y are each as defined above or its reactive derivative with a compound of the formula: ##SPC2## Wherein R.sub.1, R.sub.2 and R.sub.3 are each as defined above or its reactive derivative, and are ueful as antimicrobial agents against gram-positive and gram-negative bacteria including Pseudomonas.
新型青霉素的化学式为##SPC1##其中##EQU1##代表一个取代或未取代的苯或含氮杂芳环,可能被取代,##EQU2##代表吡啶、吡嗪或吡啉环,X代表氧或硫原子,Y代表氢原子或较低的烷氧羰基或较低的烷酰基团,R.sub.1、R.sub.2和R.sub.3分别是氢或卤素原子或硝基、较低烷基氨基、二(较低)烷基氨基、胺、较低烷氧羰基氨基、较低烷酰胺基、氨基(较低)烷基、较低烷基、较低烷氧基、羟基、磺胺基、三氟甲基、较低烷硫基或较低烷基磺酰基团,不包括R.sub.1、R.sub.2和R.sub.3均为氢原子且R.sub.1为羟基且R.sub.2和R.sub.3分别为氢或卤素原子的情况,以及它们的无毒、药学上可接受的盐,可通过将化学式为的羧酸与化学式为的化合物反应制备:##EQU3##其中##EQU4##X和Y分别如上定义或其反应衍生物与化学式为的化合物反应:##SPC2##其中R.sub.1、R.sub.2和R.sub.3分别如上定义或其反应衍生物,可用作抗菌剂,对革兰氏阳性和阴性细菌包括假单胞菌有效。