3-Epiursolic Acid 是从桃金娘科植物中分离到的三萜类物质，为竞争性的组织蛋白酶 L (cathepsin L) 抑制剂，ICIC50 和 Ki 值分别为 6.5 和 19.5 μM，对 cathepsin B 无明显作用。
CAS：989-30-0
分子式：C30H48O3
分子量：456.7
纯度：98%
存储：Store at -20°C

Background:

3-Epiursolic Acid is a triterpenoid isolated from Myrtaceae, acts as a competitive inhibitor of cathepsin L (ICIC50, 6.5 μM; Ki, 19.5 μM), with no obvious effect on cathepsin B[1]. IC50: 6.5 μM (Cathepsin L)[1]Ki: 19.5 μM (Cathepsin L)[1]

[1]. 3-Epiursolic Acid, et al. Triterpenoids as novel natural inhibitors of human cathepsin L. Chem Biodivers. 2014 Sep;11(9):1354-63.