ABSTRACT
Objective To study the chemical constituents and their biological activities of the seeds of Clausena lansium. Methods The compounds were isolated by various column chromatographic techniques including silica gel, Sephadex LH-20, semi-preparative HPLC, et al., and their structures were identified through a combined analysis of physicochemical properties, as well as NMR and MS data. The in vitro α-glucosidase inhibitory activity and nematicidal activity against Panagrellus redivivusl were screened by PNPG and Berman funnel methods, respectively. Results Eleven compounds were isolated and identified as (4R*,6R*)-6-hydroxypiperitone (1), (4S*,6R*)-6-hydroxypiperitone (2), (1S*,2S*,4R*)-1-methyl-4-(prop-l-en-2-yl) cyclohexane-1,2-diol (3), subamone (4), methyl (1R*,2R*,2’Z)-2-(5’-hydroxy-pent-2’-enyl)-3-oxo-cyclopentane acetate (5), 5-hydroxy-4-phenyl-5H-furan-2-one (6), loliolide (7), xylogranatinin (8), 2,6-dihydroxyhumula-3(12),7(13),9(E)-triene (9), xanthoxol (10), and ligballinol (11). Conclusion Compounds 1-8 are isolated from the genus for the first time, and compound 9 is first isolated from this species. Compound 8 showed strong α-glucosidase inhibitory activity, and compound 5 exhibited potent nematicidal activity.