Compounds of formula (I) are A2B receptor antagonists:
Wherein R1 is optionally substituted aryl or an optionally substituted 5- or 6-membered heteroaryl ring; R2 and R3 are independently selected from hydrogen, C1-C6 alkyl, C3-C8 cycloalkyl, C3-C8 cycloalkyl-(C1-C6)-alkyl, aryl-(C1-C6)-alkyl optionally substituted in the ring part thereof, a 5- or 6-membered monocyclic heterocyclic group optionally linked via a C1-C6 alkylene chain and optionally substituted in the ring part thereof, benzimidazol-2-yl-methyl, pyrid-3-yl-carbonyl, or (1-methyl-piperidin-4-yl)-carbonyl-methyl; or R2 and R3 taken together with the nitrogen atom to which they are attached form an optionally substituted 5- or 6-membered ring; R4 is C1-C3 alkyl, C2-C3 alkenyl, —N(—R5)—R6, or optionally substituted heteroarylmethylamino; and R5 and R6 are independently selected from hydrogen or C1-C3 alkyl; or R5 and R6 taken together with the nitrogen atom to which they are attached form an optionally substituted 4- to 6-membered saturated ring.
式(I)化合物是 A2B 受体拮抗剂:
其中 R1 是任选取代的芳基或任选取代的 5 或 6 元杂芳基环;R2和R3独立地选自氢、C1-C6烷基、C3-C8环烷基、C3-C8环烷基-(C1-C6)-烷基、在其环状部分被任选取代的芳基-(C1-C6)-烷基、任选通过C1-C6亚烷基链连接且在其环状部分被任选取代的5-或6-元单环杂环基团、
苯并咪唑-2-基-甲基、
吡啶-3-基-羰基或(1-甲基-
哌啶-4-基)-羰基-甲基;或 R2 和 R3 与它们所连接的氮原子一起形成任选取代的 5 或 6 元环;R4 是 C1-C3 烷基、C2-C3 烯基、-N(-R5)-R6 或任选取代的杂芳基甲基
氨基;R5 和 R6 独立选自氢或 C1-C3 烷基;或 R5 和 R6 与它们所连接的氮原子一起形成任选取代的 4 至 6 元饱和环。