Cycloartane-type triterpenoids from the whole plants of .

One new cycloartane-type triterpenoid, named macrobidoupoic acid A (as an C-24 epimeric mixture, , ), together with three known ones (-), were clarified by different chromatography from the whole plants. Triterpenoids ( & ) were detected for the first time from the genus. Chemical structures of them were illuminated using HR-ESI-MS, and NMR (1 D & 2 D) assessments. The cytotoxic properties of triterpenoids ( & ) were examined against two human cancer cell lines (A549, and RD) by MTT assay. As results shown, triterpenoids ( & ) possessed moderate cytotoxic activity against A549 and RD cancer cells (IC ranged from 5.44 to 39.52 μM).