申请人:Schering Corporation
公开号:US04002742A1
公开(公告)日:1977-01-11
1-N-Alkyl-4,6-di-(aminoglycosyl)-1,3-diaminocyclitols, valuable as antibacterial agents, are prepared by treating an acid addition salt of a 4,6-di-(aminoglycosyl)-1,3-diamonocyclitol antibacterial agent in an inert solvent, preferably a protic solvent containing water, with one equivalent of a hydride donor reducing agent and with at least one equivalent of an aldehyde. The 1-N-alkyl-4,6-di-(aminoglycosyl)-1,3-diaminocyclitols are also prepared by treating the corresponding 1-N-acyl-4,6-di-(aminoglycosyl)-1,3-diaminocyclitol with an amide-reducing hydride reagent in an inert organic solvent. Other methods of preparing 1-N-alkyl-4,6-di-(aminoglycosyl)-1,3-diaminocyclitols include carrying out the foregoing processes with partially N-protected intermediates. Another useful process involves preparing a Schiff base of the 1-amino function of a partially N-protected 4,6-di-(aminoglycosyl)-1,3-diaminocyclitol followed by reduction of said Schiff base and removal of the N-protecting groups. Pharmaceutical compositions comprising 1-N-alkyl-4,6-di-(aminoglycosyl)-1,3-diaminocyclitols are described as well as the method of using said compositions to elicit an antibacterial response in a warm blooded animal having a susceptible bacterial infection.
1-N-烷基-4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇是一种有价值的抗菌剂,通过在惰性溶剂中处理4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇抗菌剂的酸盐,并与一个等当量的氢化物供体还原剂和至少一个等当量的醛反应来制备。也可以通过在惰性有机溶剂中使用酰胺还原氢化物试剂处理相应的1-N-酰基-4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇来制备1-N-烷基-4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇。制备1-N-烷基-4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇的其他方法包括使用部分N-保护中间体进行前述过程。另一种有用的方法涉及制备部分N-保护的4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇的1-氨基功能的席夫碱,随后还原所述席夫碱并去除N保护基团。还描述了包括1-N-烷基-4,6-二-(氨基糖苷基)-1,3-二氨基环糖醇的药物组合物,以及使用这些组合物在感染易感细菌的温血动物中引发抗菌反应的方法。