Substituted 1,8-naphthyridinones of formulae V, Vl or VII
wherein n is 1 or 2; R1 and R2 may be combined to form a bond, or R1 is hydrogen and R2 is OR, halogen or NR3R4; R is hydrogen, carboxylic acyl or carbamyl; R3 and R4 are independently hydrogen or alkyl having from 1 to 6 carbon atoms, or R3 and R4 may be combined with the nitrogen to which they are attached to form a pyrrolidino, piperidino, morpholino or piperazino ring; R5 is hydrogen or carboxylic acyl; and Y is CH or N.
The compounds possess anti-allergic, anti-inflammatory, cytoprotective activity and an immuno-suppressing effect.
式 V、Vl 或 VII 的取代型
1,8-萘啶酮,其中 n 为 1 或 2;R1 和 R2 可结合形成键,或 R1 为氢,R2 为 OR、卤素或 NR3R4;R 为氢、羧酰基或羰基;R3 和 R4 独立为氢或具有 1 至 6 个碳原子的烷基,或 R3 和 R4 可与所连接的氮结合形成
吡咯烷、
哌啶、吗啉或
哌嗪环;R5 为氢或羧酰基;Y 为 CH 或 N。