Disclosed are the compounds of formula (I), wherein R is methyl or ethyl; R1 is chloro or fluoro; R2 is hydrogen or fluoro; R3 is hydrogen, fluoro, chloro, methyl, ethyl, methoxy, ethoxy or hydroxy; R4 is hydrogen or fluoro; and R5 is chloro, fluoro, trifluoromethyl or methyl; pharmaceutically acceptable salts thereof; and pharmaceutically acceptable prodrug esters thereof; as selective COX-2 cyclooxygenase inhibitors.
本发明涉及式(I)的化合物,其中R为甲基或乙基;R1为
氯或
氟;R2为氢或
氟;R3为氢、
氟、
氯、甲基、乙基、甲氧基、乙氧基或羟基;R4为氢或
氟;R5为
氯、
氟、三
氟甲基或甲基;其药学上可接受的盐;及其药学上可接受的前药酯,作为选择性COX-2环氧化酶
抑制剂。