Abstract
A new oligosaccharide ester, namely 3′-O-(Z)-3,4,5-trimethoxy-cinnamoyl-sucrose (1) along with nine known compounds (2–10), were isolated from the roots of Polygala fallax Hemsl. The structure of new compound was elucidated using 1D, 2D NMR, and HRESIMS methods. Furthermore, compounds 2–10 were isolated from the roots of Polygala fallax Hemsl for the first time. And the class of Lignan (8 and 10) were firstly reported in this species. Additionally, the antitumor activities of all compounds were evaluated.