| 摘要 |
There are disclosed compounds of the formula <IMAGE> wherein <IMAGE> <IMAGE> +TR <IMAGE> <IMAGE> +TR <IMAGE> R is hydrogen, lower alkyl, phenyl or benzyl; R1 is hydrogen, lower alkyl, trifluoromethyl, amino, mono- or di-lower alkylamino, nitro, hydroxy, carboxy, lower alkoxycarbonyl, lower alkoxy or halo; R2 is hydrogen or lower alkyl; and the pharmaceutically acceptable salts thereof, and their use in the treatment of psoriasis, ulcerative colitis, rheumatoid arthritis as well as in other inflammatory conditions.
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