申请人:Pennwalt Corporation
公开号:US04769369A1
公开(公告)日:1988-09-06
Novel 1 2(H)-phthalazones are disclosed along with a method of treating either allergic rihinitis or bronchial asthma by the administration to a mammal an effective amount of a compound of the formula: ##STR1## wherein R.sub.1 is hydrogen, hydroxyl, C.sub.1 -C.sub.4 alkoxy, or C.sub.1 -C.sub.4 alkylthio, R.sub.2 is ##STR2## or 1-pyrrolidinyl, R.sub.3 and R.sub.4 are independently hydrogen or C.sub.1 -C.sub.4 alkyl, X is CH.sub.2, O or NR.sub.5, Y is ethylene or ethenylene, R.sub.5 is hydrogen or C.sub.1 -C.sub.4 alkyl, n is 2, 3 or 4, and all stereoisomeric forms and pharmaceutical acceptable addition salts thereof.
本发明涉及一种1,2(H)-菲嗪酮类化合物,以及通过向哺乳动物施用公式化合物的有效量来治疗过敏性鼻炎或支气管哮喘的方法:其中R1为氢、羟基、C1-C4烷氧基或C1-C4烷基硫基,R2为##STR2##或1-吡咯烷基,R3和R4独立地为氢或C1-C4烷基,X为CH2、O或NR5,Y为乙烯或乙烯基,R5为氢或C1-C4烷基,n为2、3或4,以及其所有立体异构体和药学上可接受的加合物。