The diarylbenzopyran derivatives represented by formula I, and the pharmaceutically acceptable salts thereof, are disclosed. The composition comprising the compound of formula I, or a pharmaceutically acceptable salt thereof, shows an excellent selective inhibition of cyclooxygenase-2. ##STR1##

Los derivados del diarylbenzopyran representados por el fórmula I, y las sales farmacéutico aceptables de eso, se divulgan. La composición que abarca el compuesto del fórmula I, o una sal farmacéutico aceptable de eso, demuestra una inhibición selectiva excelente de cyclooxygenase-2. ## del ## STR1

 
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