Two new lignans from Zanthoxylum armatum

Zanthoxylum armatum, its peels possessed better special flavour, as well as various bioactivities, such as anti-inflammatory, anti-microbial and anti-tumour. In our chemical investigation on the peels of Z. armatum, two new lignans (1 and 2) and three known lignans (3–5) were isolated by silica gel column chromatography, ODS column and preparative HPLC and their structures were established as zanthlignans A and B (1–2), (-)-asarinin (3), phylligenin (4) and planispine A (5) through various spectroscopic techniques including UV, IR, HR-ESI-MS, NMR and CD methods.