摘要 |
The present invention relates to optical isomers of quinoline compounds of Formula (IA) or Formula (IA'), their pharmaceutically acceptable salts and their intermediates: <IMAGE> (IA) <IMAGE> (IA') In the above formulae, A represent nitrogen or <IMAGE> in which Y represents hydrogen, halogen such as fluorine or chlorine, lower alkyl or lower alkoxy such as methoxy, or together with R1 forms -CH2CH2CH2-, -CH2CH2CH(CH3)-, -OCH2CH2-, -OCH2CH(CH3)-, -SCH2CH2- or -SCH2CH(CH3)-; R1 is as defined above or represents straight chain or cyclic lower alkyl group having 1 to 3 carbon atoms, a straight chain or cyclic lower alkyl group having 1 to 3 carbon atoms which is substituted with a halogen atom, a phenyl group or a phenyl group substituted with one or two halogen atoms, such as ethyl, cyclopropyl or 2,4-difluorophenyl; R4 represents hydrogen, lower alkyl, lower alkoxy, or an amino-protecting group, such as methyl, ethyl or butoxycarbonyl; R5, R6, R7 and R8 may be the same or different and represent independently hydrogen, lower alkyl optionally substituted by amino, hydroxy or halogen, such as methyl or ethyl; and X represents hydrogen, halogen such as fluorine or chlorine, amino or lower alkyl such as methyl.
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申请人 |
KOREAN RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY |
发明人 |
KIM, WAN JOO;PARK, TAE HO;KIM, MOON HWAN;PARK, JEWN GIEW;KIM, BONG JIN |