| 摘要 |
There is provided compounds of formula (I), wherein Rx, Ry, X1, X2, L1, L2, Y1 and Y2 have meanings given in the description, and pharmaceutically-acceptable salts thereof, which compounds are useful in the treatment of diseases in which inhibition of the activity of leukotriene C4 synthase is desired and/or required, and particularly in the treatment of a respiratory disorder and/or inflammation.
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