2,3-Diaryl-pyrazolo[1,5-b]pyridazines derivatives, their preparation and their use as cyclooxygenase 2(COX-2) inhibitors
申请人:Smithkline Beecham Corporation
公开号:US06451794B1
公开(公告)日:2002-09-17
The invention provides the compounds of formula (I) and pharmaceutically acceptable derivatives thereof in which: R0 is halogen, C1-6alkyl, C1-6alkoxy, C1-6alkoxy substituted by one or more fluorine atoms, or O(CH2)nNR4R5; R1 and R2 are independently selected from H, C1-6alkyl, C1-6alkyl, substituted by one or more fluorine atoms, C1-6alkoxy, C1-6hydroxyalkyl, SC1-6alkyl, C(O)H, C(O)C1-6alkyl, C1-6alkylsulphonyl, C1-6alkoxy substituted by one or more fluorine atoms, O(CH2)nCO2C1-6alkyl, O(CH2)nSC1-6alkyl, (CH2)nNR4R5, (CH2)nSC1-6alkyl or C(O)NR4R5; with the proviso that when R0 is at the 4-position and is halogen, at least one of R1 and R2 is C1-6alkylsulphonyl, C1-6alkoxy substituted by one or more fluorine atoms, O(CH2)nCO2C1-6alkyl, O(CH2)nSC1-6alkyl, (CH2)nNR4R5 or (CH2)nSC1-6alkyl, C(O)NR4R5; R3 is C1-6alkyl or NH2; R4 and R5 are independently selected from H, or C1-6alkyl or, together with the nitrogen atom to which they are attached, form a 4-8 membered saturated ring; and n is 1-4. Compounds of formula (I) are potent and selective inhibitors of COX-2 and are of use in the treatment of the pain, fever, inflammation of a variety of conditions and diseases.
该发明提供了式(I)的化合物及其在药学上可接受的衍生物,其中:R0为卤素,C1-6烷基,C1-6烷氧基,C1-6烷氧基上取代一个或多个氟原子,或O(CH2)nNR4R5;R1和R2分别选择自H,C1-6烷基,C1-6烷基,取代一个或多个氟原子,C1-6烷氧基,C1-6羟基烷基,SC1-6烷基,C(O)H,C(O)C1-6烷基,C1-6烷基磺酰基,C1-6烷氧基上取代一个或多个氟原子,O(CH2)nCO2C1-6烷基,O(CH2)nSC1-6烷基,(CH2)nNR4R5,(CH2)nSC1-6烷基或C(O)NR4R5;但当R0位于4位且为卤素时,R1和R2中至少一个为C1-6烷基磺酰基,C1-6烷氧基上取代一个或多个氟原子,O(CH2)nCO2C1-6烷基,O(CH2)nSC1-6烷基,(CH2)nNR4R5或(CH2)nSC1-6烷基,C(O)NR4R5;R3为C1-6烷基或NH2;R4和R5分别选择自H,或C1-6烷基,或与它们连接的氮原子一起形成4-8成员饱和环;n为1-4。式(I)的化合物是COX-2的有效且选择性抑制剂,并可用于治疗疼痛、发热、炎症等多种疾病和症状。