| 摘要 |
PCT No. PCT/US90/02162 Sec. 371 Date May 8, 1992 Sec. 102(e) Date May 8, 1992 PCT Filed Apr. 20, 1990 PCT Pub. No. WO91/07178 PCT Pub. Date May 30, 1991.Racemic or optically active compound of the formula <IMAGE> wherein X is O or NH, R1 is a (C7-C11)polycycloalkyl group, R2 is methyl or ethyl, Y is <IMAGE> R3 is hydrogen, (C1-C3)alkyl, (C2-C3)alkenyl, benzyl or phenethyl, and R4 is hydrogen, (C1-C3)alkyl or (C2-C3)alkanoyl, are useful in the treatment of asthma or inflammatory airway or skin diseases.
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