| 摘要 |
A compound having formula (I) or a pharmaceutically acceptable salt thereof wherein one of R1, R2 and R3 is a cyclic or heterocyclic acidic functional group having a pKa value below 8 or a group which is convertible in vivo to such a group; R4, R5 and the two other substitutents R1, R2 and R3 are each independently selected from hydrogen; alkyl; alkoxy; hydroxy; halogen; trifluoromethyl; cyano; nitro; amino; alkylamino; -COOR7; -NHSO2-alkyl; -SO2N(R7)2; -SO2OR7; -CO-R7; aryl, biphenyl, phenylamino, phenoxy or heteroaryl, wherein the aryl, biphenyl, phenylamino, phenoxy or heteroaryl group may be substituted one or more times with substituents selected from alkyl, hydroxy, alkoxy, halogen, trifluoromethyl, cyano, nitro, amino and alkylamino; aryl and heteroaryl, or R3 and R4 or R4 and R5 together form a cyclic structure and the other substituents R1, R2, R3, R4 and R5 is as defined above; and R7 is hydrogen, alkyl, amino or phenyl; Y is -CO-, -CS-, -SO2-, or -C(=N-R8)-, wherein R8 is hydrogen, alkyl, or cyano; X is -NH-, -CH2-NH-, or -SO2-NH-; Z is NR6, O, -CH=CH-, -N=CH-, or -CH=N-; R6 is hydrogen, or alkyl; R11, R12, R13, R14 and R15 are each independently selected from hydrogen; alkyl; alkoxy; hydroxy; halogen; trifluoromethyl; cyano; nitro; amino; alkylamino; -COOR7; -NHSO2-alkyl; -SO2N(R7)2; -SO2OR7; -CO-R7; aryl, biphenyl, phenylamino, phenoxy or heteroaryl, wherein the aryl, biphenyl, phenylamino, phenoxy or heteroaryl group may be substituted one or more times with substituents selected from alkyl, hydroxy, alkoxy, halogen, trifluoromethyl, cyano, nitro, amino and alkylamino; aryl and heteroaryl, or one of R11 and R12, R12 and R13, R13 and R14 and R14 and R15 together form a cyclic structure and the other substituents R11, R12, R13, R14 and R15 is as defined above and R7 is as defined above; these compounds are particularly useful in the treatment of sickle-cell anaemia.
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