Urazole compounds having the formula (I),
1
or pharmaceutically-acceptable salts thereof, are effective as anti-inflammatory or immunosuppressive agents, wherein L and K are O or S; Q is a linker such as —O—, —S—, C(═O), and so forth, R
1
is an aryl or heteroaryl group, and R
3
, R
4a
, R
4c
, Z, r, s and t are as defined in the specification.
具有
化学式(I)的Urazole化合物,或其药学上可接受的盐,可作为抗炎或
免疫抑制剂。其中L和K为O或S;Q为连接基,例如-O-、-S-、C(═O)等;R1为芳基或杂环芳基基团,而R3、R4a、R4c、Z、r、s和t的定义如规范中所述。