发明授权
US5194617A 2,3-disubstituted-4-hydroxyquinoline derivatives 失效
2,3-二取代-4-羟基喹啉衍生物

2,3-disubstituted-4-hydroxyquinoline derivatives
摘要:
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.
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