mild, modular and efficient synthetic method with broad substrate scope was developed for aspulvinones. Nine natural aspulvinones were synthesized, six of which were for the first time. The aldol condensation delivered Z-configuration products predominantly in MeCN. Meanwhile, alkoxy exchange occurred in MeOH and EtOH. Aspulvinone O and E, and substrate 49, 50, and 51 exhibited modest anti-SARS-CoV-2
开发了一种温和、模块化、高效且底物适用范围广的阿斯普维酮合成方法。合成了九种天然阿斯普维酮,其中六种为首次合成。羟醛缩合主要在 MeCN 中提供 Z 构型产品。同时,MeOH和EtOH发生烷氧基交换。Aspulvinone O 和 E,以及底物 49、50 和 51 在高通量筛选和酶动力学测定中表现出适度的抗 SARS-CoV-2 活性。