Structure–activity relationships of indole compounds derived from combretastatin A4: Synthesis and biological screening of 5-phenylpyrrolo[3,4-a]carbazole-1,3-diones as potential antivascular agents
4′,5′-trimethoxyphenyl)pyrrolo[3,4-a]carbazole-1,3(2H,10H)-diones was designed as cis-restricted analogues of 3-aroylindoles, arylthioindoles and 3-benzylidoneindolin-2-ones derivedfrom combretastatin A4 (CA-4). Starting from various indoles, compounds were synthesized by means of a convenient two-step procedure involving a one-pot multicomponent reaction as key step. Intermediate tetrahydro[3,4-a]carbazoles
设计了一系列5-(3',4',5'-三甲氧基苯基)吡咯并[3,4- a ]咔唑-1,3(2 H,10 H)-二酮作为3-芳基吲哚的顺式限制类似物衍生自康维他汀A4(CA-4)的芳基,芳基硫基吲哚和3-苄基二氢吲哚-2-酮。由各种吲哚开始,通过方便的两步法合成化合物,其中以一锅多组分反应为关键步骤。中间四氢[3,4- a]咔唑及其相应的咔唑已进行了涉及抗血管作用的生物学筛选测试,包括对鼠B16黑色素瘤细胞的细胞毒性,内皮细胞的聚集(EA.hy 926)和微管蛋白聚合的抑制作用。在筛选出的31种化合物中,在8位带有甲氧基的化合物具有显着的生物学活性。咔唑化合物30被确定为新型血管靶向剂的进一步开发的有希望的候选者。