| 摘要 |
Compounds of formula 1 <IMAGE> 1 in which R1, R2, R3 and R4 are the same or different selected from the group consisting of hydrogen, halogen, nitro, trifluoromethyl, lower alkyl and lower alkoxy, or R1 and R2, R2 and R3, or R3 and R4 together form a CH2CH2CH2CH2 chain and R3 and R4, R1 and R4 and R1 and R2, respectively, are as defined above, R5 is hydrogen, lower alkyl or a radical of formula -Alk-OR6 wherein Alk is an alkylene selected from the group consisting of CR7R8, CR7R8CR9R10, CR7R8CR9R10CR11R12 and CR7R8CR9R10CR11R12CR13R14 wherein each of R7, R8, R9, R10, R11, R12, R13 and R14 is hydrogen or lower alkyl and R6 is hydrogen or lower alkyl; R15 is hydrogen or lower alkyl; X is O, S, SO or SO2; and Y is O or NR16 wherein R16 is hydrogen or lower alkyl, are disclosed. The compounds of formula 1 are useful for treating allergic conditions and for treating microbial infections. Methods for the preparation and use of said compounds are disclosed.
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