A class of benzopyran, derivatives is described for use in treating cyclooxygenase-2 mediated disorders. Compounds of particular interest are defined by Formula I′
wherein X, A
1
, A
2
, A
3
, A
4
, R, R″, R
1
and R
2
are as described in the specification.
一类
苯并
吡喃衍
生物被描述为用于治疗环
氧合酶-2介导的疾病。特别感兴趣的化合物由公式I'定义,其中X,A1,A2,A3,A4,R,R",R1和R2如规范中所述。