2,3-Disubstituted-4-hydroxyquinoline derivatives and process for preparing the same
申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0374765A1
公开(公告)日:1990-06-27
2, 3-disubstituted-4-hydroxyquinoline derivatives of the general formula (I):
[wherein R1 represents a hydrogen atom or R3CO- (wherein R3 is a lower alkyl group); R2 represents a hydrogen atom, -CH3 or C2Hs; A represents -CH2CH = CH-,
-CH = CHCH2 or CH2C ≡ C- ; and W represents a hydrogen atom, or 1 - 4 halogen atoms or alkyl groups which are substituted at the nucleus and may be the same or different] having the strong antagonistic action on leukotriene D4 is described. A process for preparing the derivatives is also described.
2,3-disubstituted-4-hydroxyquinoline derivatives of the general formula (I): ##STR1## [wherein R.sup.1 represents a hydrogen atom or R.sup.3 CO-- (wherein R.sup.3 is a lower alkyl group); R.sup.2 represents a hydrogen atom, --CH.sub.3 or --C.sub.2 H.sub.5 ; A represents ##STR2## and W represents a hydrogen atom, or 1- 4 halogen atoms or alkyl groups which are substituted at the nucleus and may be the same or different] have a strong antagonistic action on leukotriene D.sub.4.