Cleistanthin B
Cleistanthin B (Diphyllin O-glucoside) is an orally active arylnaphthalene lignan lactone glycoside. Cleistanthin B exhibits anti-SARS-CoV-2 effects in Vero cells, with EC50 of 6.51 μM. Cleistanthin B also exhibits antitumor, diuretic and antihypertensive effects in vivo[1][2][3][4].