Compounds of general formula (I), wherein R
4
and R
5
stand for hydrogen atom or form together an 1,3-butadienyl group, optionally substituted by a methylenedioxy group or one or more straight or branched C
1-4
alkyl group, straight or branched C
1-4
alkoxy group, hydroxy group or halogen atom; are strong adenosine A
3
receptor ligands preferably antagonists.
1
通式(I)的化合物,其中R4和R5代表氢原子或形成
1,3-丁二烯基团,可选择性地被甲二氧基基团或一个或多个直链或支链C1-4烷基团,直链或支链C1-4烷氧基团,羟基或卤原子所取代;是强的
腺苷A3受体
配体,最好是拮抗剂。1