Diversity-oriented synthesis of marine polybrominated diphenyl ethers as potential KCNQ potassium channel activators.
Bioorganic chemistry(2022)
摘要
Natural polybrominated diphenyl ethers, often isolated from marine sponges, have been reported to possess various biological activities, such as antibacterial, antioxidant and antidiabetic effects. Via a high throughput screening of our marine natural product library, the polybrominated diphenyl ether 3 was found to display a KCNQ potassium channel activation effect. To obtain more compound 3 related natural products and their derivatives for further bioactivity study, a diversity-oriented synthesis was conducted, leading to the successful synthesis of five polybrominated diphenyl ether natural products (1-4, 6) and 30 new derivatives. Compound 3 was found to preferentially potentiate KCNQ1 potassium channel, whereas 17h relatively activated KCNQ2 potassium channel. The structure-activity relationship was analyzed assisted by molecular docking and 17h was further conducted for its agonistic mechanism study on KCNQ2 channel. This research work may give an insight for the discovery of marine polybrominated diphenyl ether derived new drug leads.
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