Brequinar is a potent inhibitor of dihydroorotate dehydrogenase with potent activities against a broad spectrum of viruses.

Lobetyol is a natural compound that can be isolated from Lobelia chinensis. Lobetyol induces apoptosis and cell cycle arrest in MKN45 cells. Lobetyol shows anti-virus, anti-inflammation and anti-tumor activity. Lobetyol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Deoxyartemisinin (2-deoxyartemisinin), a compound derived from Artemisia annua, has anti-inflammatory and anti-ulcer effects and is used in the study of malaria.