| 摘要 |
Compounds of the formula <CHEM> wherein R<1> is hydrogen or lower alkyl, R<2> is hydrogen or halogen, R<3>, R<4> and R<5>, independently, are hydrogen, acyl or lower alkyl, provided that only one of R<3>, R<4> and R<5> can be acyl, R<6> is hydrogen or lower alkyl, R<7> is higher alkyl or benzyl and X is (C3-7)-alkylene, as well as enantiomes thereof, are useful for treating allergic and inflammatory disorders. They can be prepareed according to known methods. |
