Naphthyridine derivatives, processes for their preparation and pharmaceutical compositions containing them
申请人:Société anonyme dite:
LABORATOIRE ROGER BELLON
公开号:EP0027752A1
公开(公告)日:1981-04-29
The present invention provides a 1,8-naphthyridine compound of the formula
wherein
R is hydrogen, methyl, ethyl or propyl, and a nontoxic pharmaceutically acceptable salt thereof,
-an antibacterial agent comprising said 1,8-naphtyridine compound
-and a process for prearing a 1,8-naphtyridine compound of the above formula which comprises
(A) reacting a compound oftheformula:
with a compound of the formula
or (B) decomposing a compound of the formula
or (C) treating a compound of the formula
with an acid or base, and/or reducrively cleaving it.
本发明提供了一种式中 R 为氢、甲基、乙基或丙基的 1,8-萘啶化合物及其无毒的药学上可接受的盐,一种包含上述 1,8-萘啶化合物的抗菌剂,以及一种预制上述式中 1,8-萘啶化合物的工艺,该工艺包括(A)使式中化合物:与式中化合物反应,或(B)分解式中化合物,或(C)用酸或碱处理式中化合物,和/或还原裂解式中化合物。