Three isoprenylated flavanones were isolated from the leaves of Flemingia lineata (L.) Aiton. Among them are two new flavanones, flemilineatins A and B (1 - 2), along with 6-isoprenyl eridioctyol (3). Their structures were determined using HRESIMS data and NMR spectra. Flavanones 1 - 3 were assayed in the HeLa cancer cells. Compound 1 showed moderate activity with an IC 50 value of 11.2 µM.

Two xanthones and 4-phenylcoumarins were isolated from the twigs of Mesua beccariana (Baill.) Kosterm. Among them, one new xanthone, beccarianin A (1), along with 7-isoprenyl-jacareubin (2), mammea A/ AA cyclo F (3), and mammea A/BA cyclo F (4). These structures were determined by spectrometric and spectroscopic methods, HRESIMS data, NMR, and UV spectra. Two xanthones (1-2) and two 4-phenylcoumarins (3-4) were evaluated for their cytotoxic effect on the HeLa cells. Compound 1 showed active activity (IC50 = 8.2 µM), and compounds 3-4 showed moderate activity (IC50 = 12.3 and 15.6 µM, respectively).

A new flavonol, macagigantin A (1), and three known flavonols (2–4) were isolated from Macaranga gigantea leaves. The structure of macagigantin A was fully assigned by 1D and 2D NMR, UV, and highresolution mass spectra data. The cytotoxic activity of 1–4 was evaluated against 4T1, P-388, and HeLa cells.Compound 1 showed potent activity against 4T1 cells with an IC 50 value of 1.18 μg/mL, and compound 3 showed moderate activity against P-388 cells (IC 50 value of 2.54 μg/mL).