申请人:KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
公开号:EP0550019A3
公开(公告)日:1993-09-01
The present invention relates to certain novel quinolone compounds of the present invention represented by the following formula(l) and novel processes for preparing same.
wherein:
X is a nitrogen atom or a C-Y group wherein Y is a hydrogen, fluorine, chlorine or bromine atom or a methoxy or methyl group;R1 is a C1 -6 alkyl group optionally substituted with a halogen atom or a hydroxy radical, an alkenyl group, a C3-6 cycloalkyl group, a phenyl group substituted with a halogen atom or a divalent group of -OCH2*CH(CH3)-, -SCH2*CH2-or -SCH2*CH(CH3)- which forms an oxazine or thiazine ring together with the nitrogen atom to which R1 is attached and with X wherein X is C-Y;R2 is a hydrogen atom, a carboxy protecting group or a pharmaceutically acceptable metal or organic cation;R3 and R4, which may be the same or different, are a hydrogen atom, a lower alkyl group, an acyl group or a nitrogen protecting group metabolizable in vivo;Z is a hydrogen or halogen atom, an amino, hydroxy or methyl group; andn is 1 to 3.
本发明涉及一些新型喹诺酮化合物,其由以下式(l)表示,并且涉及制备这些化合物的新型方法。其中:X是氮原子或C-Y基团,其中Y是氢、氟、氯或溴原子或甲氧基或甲基基团;R1是C1-6烷基基团,可选择地取代为卤原子或羟基基团、烯基基团、C3-6环烷基基团、带有卤原子的苯基基团或与R1连接的氮原子一起形成氧杂环或硫杂环的二价基团,其中X是C-Y;R2是氢原子、羧基保护基团或药用可接受的金属或有机阳离子;R3和R4,可以相同也可以不同,是氢原子、较低烷基基团、酰基团或在体内可代谢的氮保护基团;Z是氢或卤原子、氨基、羟基或甲基基团;n为1至3。