Synthesis of Novel 4‐Substituted Coumarins, Docking Studies, and DHODH Inhibitory Activity
作者:Dayanand Patagar、Raviraj Kusanur、Nikum D. Sitwala、Manjunath D. Ghate、Shanmugasundar Saravanakumar、Sharanappa Nembenna、Piyush A. Gediya
DOI:10.1002/jhet.3644
日期:2019.10
Coumarins are the important class of naturally occurring heterocyclic compounds. Activities like antioxidant, antibacterial, anti‐inflammatory, and anticancer have been reported for coumarin derivatives. Present work details the synthesis of substituted coumarin‐4‐pyrrolones as well as coumarin‐4‐acetyl amino acids and their DHODH inhibitory activity, which is a dual target for malaria and cancer.
香豆素是一类重要的天然杂环化合物。据报道,香豆素衍生物具有抗氧化剂,抗菌剂,抗炎剂和抗癌剂等活性。目前的工作详细介绍了取代的香豆素-4-吡咯烷酮以及香豆素-4-乙酰基氨基酸的合成及其对DHODH的抑制活性,这是疟疾和癌症的双重目标。香豆素-4-乙酸(2a – c)与不同的α-氨基酸甲酯(3)结合生成相应的香豆素4-乙酰氨基酸甲基酯(4a – o),在碱性条件下水解进行环化反应生成取代的二氢吡咯-2-酮(5a –i),二氢吲哚嗪3合一(5j – l)和二氢吡咯烷嗪3合一(5m – o)。化合物的酸性水解(4a - o)得到相应的香豆素-4-乙酰基氨基酸(6a - f)。对接研究是使用Surflex-Dock模块与4IGH蛋白(从PDB获得)进行的。以布雷奎纳尔为标准,测试了新合成的化合物对DHODH的抑制活性。与标准品相比,化合物6b表现出显着的抑制作用,而其他具有末端COOH的化合物则表现出中度抑制作用。