Theaflavin 3,3'-digallate (TF-3) 是有效的寨卡病毒 (ZIKV) 蛋白酶抑制剂，IC50 为 2.3 μM。Theaflavin 3,3'-digallate 直接与 ZIKVpro 结合 (Kd=8.86 µM) 并抑制 ZIKV 复制。Theaflavin 3,3'-digallate 抑制 gp41 和 NS2B-3 蛋白酶的活性，并具有抗 HSV 和 HIV-1 病毒活性。Theaflavin 3,3'-digallate 是红茶中的典型色素，一种有效的抗肿瘤剂。 Theaflavin 3,3'-digallate (TF-3) is a potent Zika virus (ZIKV) protease inhibitor with an IC50 of 2.3 μM. Theaflavin 3,3'-digallat directly binds to ZIKVpro (Kd=8.86 µM) and inhibits ZIKV replication. Theaflavin 3,3'-digallat inhibits the activity of gp41 and NS2B-3 protease and has antiviral activity against HSV and HIV-1. Theaflavin 3,3'-digallate, the typical pigment in black tea, is a potent antitumor agent.