A New Ursane-Type Pentacyclic Triterpenoid from the Tree Bark of Sandoricum koetjape: Antibacterial, DFT, and Molecular Docking Study

从山茱萸树皮中分离得到一种新的乌苏烷型五环三萜类化合物：抗菌活性、密度泛函理论计算和分子对接研究