“…Ursolic acid (3-hydroxy-12-ursen-28-oic acid, UA, Figure 1) belongs to pentacyclic triterpenoids that mainly exist in plants such as the whole grass of Prunella vulgaris, and Ilex. It exhibits wide range of pharmacological activities, including anti-oxidation (Wang et al, 2018), anti-bacterial (Qian et al, 2020), anti-ulcer (Liu et al, 2016), anti-inflammatory (Wang et al, 2018), anti-tumor (Cao et al, 2020) anti leukemia (da Silva et al, 2021), lowering blood glucose (Alkreathy & Ahmad, 2020), as well as obvious stability and cooling effects on the central nervous system (Colla et al, 2021), and liver protection (Ma et al, 2021). In recent years, it has attracted much attention due to its strong pharmacological activity, slight side effects, and a vast range of sources.…”