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-Alkyl-4,6-二-(氨基糖苷)-1,3-二氨基环己糖醇是一种有价值的抗菌剂,其制备方法为:将4,6-二-(氨基糖苷)-1,3-二氨基环己糖醇抗菌剂的酸加成盐在惰性溶剂中处理,最好使用含水的质子溶剂,与一个等当量的还原剂和至少一个等当量的醛反应。1-N-烷基-4,6-二-(氨基糖苷)-1,3-二氨基环己糖醇也可通过在惰性有机溶剂中处理相应的1-N-酰基-4,6-二-(氨基糖苷)-1,3-二氨基环己糖醇与酰胺还原剂反应来制备。制备1-N-烷基-4,6-二-(氨基糖苷)-1,3-二氨基环己糖醇的其他方法包括使用部分N-保护的中间体进行上述过程。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)-1,3-二氨基环己糖醇的1-氨基功能的席夫碱,然后还原该席夫碱并去除N-保护基。描述了含有1-N-烷基-4,6-二-(氨基糖苷)-1,3-二氨基环己糖醇的制药组合物,以及使用该组合物在易感染细菌感染的温血动物中引发抗菌反应的方法。