申请人:PFIZER INC.
公开号:EP0409484A2
公开(公告)日:1991-01-23
A compound of the formula:
or a pharmaceutically acceptable acid addition salt thereof, wherein R₁ is hydrogen or C₁-C₃ alkyl;
R₂ is a group of the formula:-
-(CH₂)m-Ar or -(CH₂)m-Het
wherein m is an integer of 1 to 6 and Ar is phenyl optionally substituted by one or more radicals selected from (C₁-C₃) alkyl, (C₁-C₃)alkoxy, (C₁-C₃)alkylthio, halo, (C₁-C₂) alkylamino and hydroxyl; Het is selected from furyl, thienyl, pyridyl, pyrrolyl, imidazolyl, pyranyl, oxazolyl and indazolyl; and Y₁, Y₂ and Y₃ are each independently hydrogen, (C₁-C₃) alkyl, halo (C₁-C₃) alkoxy or trifluoromethyl;
with the proviso that at least two of Y₁, Y₂ and Y₃ are other than hydrogen.
The compounds are useful in treating allergic and inflammatory conditions.
式中的化合物
或其药学上可接受的酸加成盐,其中 R₁ 是氢或 C₁-C₃ 烷基;
R₂ 是式中的基团:- (CH₂)
-(CH₂)m-Ar或-(CH₂)m-Het
其中,m 是 1-6 的整数,Ar 是被选自 (C₁-C₃)烷基、(C₁-C₃)烷氧基、(C₁-C₃)烷硫基、卤代、(C₁-C₂)烷基氨基和羟基的一个或多个基团任选取代的苯基;Het选自呋喃基、噻吩基、吡啶基、吡咯基、咪唑基、吡喃基、噁唑基和吲唑基;且Y₁、Y₂和Y₃各自独立地为氢、(C₁-C₃)烷基、卤代(C₁-C₃)烷氧基或三氟甲基;
但 Y₁、Y₂ 和 Y₃ 中至少有两个不是氢。
这些化合物可用于治疗过敏和炎症。