The present invention relates to certain novel quinolone compounds of the present invention represented by the following formula(I) and novel processes for preparing same.
wherein:
X isa nitrogen atom or a C-Y group wherein Y is a hydrogen, fluorine, chlorine or bromine atom or a methoxy or methyl group;
R₁ isa 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 isa 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 isa hydrogen or halogen atom, an amino, hydroxy or methyl group; and
n is1 to 3.
本发明涉及下式(I)所代表的本发明的某些新型
喹诺酮化合物及其新型制备工艺。
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;
R₁ 是任选被卤素原子或羟基取代的 C₁₋₆ 烷基、烯基、C₃₋₆ 环烷基、被卤素原子取代的苯基或 -OCH₂*CH(CH₃)- 的二价基团、-SCH₂*CH₂-或 -SCH₂*CH(CH₃)-,它们与 R₁ 所连接的氮原子和 X 一起形成噁嗪环或
噻嗪环,其中 X 为 C-Y;
R₂ 是氢原子、羧基保护基团或药学上可接受的
金属或有机阳离子;
R₃和 R₄(可以相同或不同)是氢原子、低级烷基、酰基或可在体内代谢的氮保护基团;
Z 是氢原子或卤素原子、
氨基、羟基或甲基;以及
n 为 1 至 3。