The present invention provides compounds having the formula I: 
X is (C1-C8)alkylene, (C2-C8)alkenylene, (C2-C8)alkynylene, wherein one of the carbon atoms in the alkylene, alkenylene or alkynylene groups is optionally replaced with a group having the formula —O—, —N(R4)C(O)—, —OC(O—, S—, —S(O)—or —SO2—, or a pharmaceutically acceptable salt thereof and pharmaceutical compositions comprising compounds having the formula I. The compounds of the invention are selective antagonists of A2B adenosine receptors (ARs). These compounds and compositions are useful as pharmaceutical agents for treatment of diseases that are mediated by A2B adenosine receptors.
                            本发明提供具有以下式子I的化合物:X是(C1-C8)烷基,(C2-C8)烯基,(C2-C8)炔基,其中烷基,烯基或炔基中的一个碳原子可以选择性地被具有以下式子的基团所替代:—O—,—N(R4)C(O)—,—OC(O—,S—,—S(O)—或—SO2—,或其药学上可接受的盐以及包含具有式子I的化合物的制药组合物。本发明的化合物是A2B
腺苷受体(ARs)的选择性拮抗剂。这些化合物和组合物可用作治疗由A2B
腺苷受体介导的疾病的药物。