Phytochemical investigation on an EtOH extract of the leaves of Mons yunnanensis led to the isolation and characterization of 11 isoprenylated phenolic compounds, morusyunnansin G (1), morachalcone B (2), cudraxanthone M (3), cudraxanthone D (4), sanggenofuran B(5), moracin D (6), moracin C (7),