申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:US04125615A1
公开(公告)日:1978-11-14
2-[4-(P-Aminobenzyl)-1-piperazinyl]-8-ethyl-5,8-dihydro-5-oxopyrido-[2,3-d] pyrimidine-6-carboxylic acid, and its pharmaceutically acceptable salt. This novel compound can be prepared by reacting a compound of the formula ##STR1## wherein R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, with a compound of the formula ##STR2## wherein R.sub.1 is an amino group or a group convertible to the amino group, and X is a reactive moiety capable of splitting off together with the hydrogen atom at the 4-position of the 1-piperazinyl group of the compound of the formula (II). Pharmaceutical compositions containing aforesaid compounds as active ingredients are useful for treating a bacterial infection of man and other warm-blooded animals.
这种新化合物可以通过将具有以下结构式的化合物与具有以下结构式的化合物反应制备而成:其中R是氢原子或具有1至6个碳原子的烷基基团;其中R₁是氨基团或可转化为氨基团的基团,X是具有裂解能力的反应基团,能够与结构式(II)中的1-哌嗪基团的4位氢原子一起脱落。包含上述化合物作为活性成分的药物组合物对治疗人类和其他温血动物的细菌感染有用。