Aromatic glucosides from the seeds of Prunus davidiana

Chemical investigation of the seeds of Prunus davidiana afforded seven new aromatic glucosides, i.e., the prupersins A-E (1-5) and compounds 6 and 7, as well as 11 known compounds. The structures of 1-7 were elucidated by spectroscopic data analysis and chemical evidence, and configurations were determined by hydrolysis experiments (1, 2, and 5) or electronic circular dichroism (6). Compounds 1-6 exhibited antioxidant activity aganist Fe²⁺-cysteine-induced rat liver microsomal lipid peroxidation, with malondialdehyde inhibitory rates of 50-67% and 53-57% at concentrations of 10⁻⁵ and 10⁻⁶ mol/L, respectively.