| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 | 
|---|---|---|---|---|
| 7-氯-6-氟-4-氧代-1,4-二氢喹啉-3-羧酸乙酯 | ethyl 7-chloro-6-fluoro-4-oxo-1,4-dihydroquinoline 3-carboxylate | 75073-15-3 | C12H9ClFNO3 | 269.66 | 
| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 | 
|---|---|---|---|---|
| —— | ethyl 7-chloro-4-(4-chlorophenyl)sulfanyl-6-fluoro-3-quinolinecarboxylate | 218457-60-4 | C18H12Cl2FNO2S | 396.269 | 
CDK8/CycC complex has kinase activity towards the carboxyterminal domain of RNA polymerase II, and contributes to the regulation of transcription via association with the mediator complex. Different human malignancies, mainly colorectal and gastric cancers, were produced as a result of overexpression of CDK8/CycC in the mediator complex. Therefore, CDK8/CycC complex represents as a cancer oncogene and it has become a potential target for developing CDK8/CycC modulators.
A series of nine 4-phenylaminoquinoline scaffold-based compounds 
The scaffold substituent effects on the intrinsic inhibitory activity toward CDK8/CycC complex are addressed trying to present a novel outlook of CDK8/CycC Complex inhibitors with 4-phenylaminoquinoline scaffold in cancer therapy. The secondary benzenesulfonamide analogues proved to be the most potent compounds in suppressing CDK8/CycC enzyme, whereas, their primary benzenesulfonamide analogues showed inferior activity. Moreover, the benzene reversed sulfonamide analogues were totally inactive.
The titled scaffold showed promising inhibitory activity data and there is a crucial role of un/substituted sulfonamido group for CDK8/CycC complex inhibitory activity. Compound 
CDK8/CycC复合物具有对RNA聚合酶II羧基末端结构的激酶活性,并通过与中介体复合物的结合参与转录调控。过表达CDK8/CycC在中介体复合物中是导致不同人类恶性肿瘤,主要是结肠直肠癌和胃癌的原因。因此,CDK8/CycC复合物代表了一种癌症致癌基因,已成为开发CDK8/CycC调节剂的潜在靶点。
探讨了支架取代基对CDK8/CycC复合物固有抑制活性的影响,试图提供使用4-苯胺基喹啉支架的CDK8/CycC复合物抑制剂在癌症治疗中的新视角。次级苯磺酰胺类似物被证明是抑制CDK8/CycC酶最有效的化合物,而它们的主要苯磺酰胺类似物表现出较差的活性。此外,苯环反转磺酰胺类似物完全没有活性。
这个支架显示了有前途的抑制活性数据,并且未/取代磺酰胺基团对于CDK8/CycC复合物的抑制活性起着至关重要的作用。化合物5d对CDK8/CycC表现出亚微米级的抑制活性(IC50 = 0.639 µM),可以用于进一步的研究,并设计另一个更大的基于苯胺基喹啉支架的类似物库,以建立详细的SAR。