[摘要]：A new stereoisomer of a tetrahydrofuranoid lignan.acerifuranoid A (1), and two new oleanane-type triterpenoids, aceriphyllic acids J and K (2 and 3), were isolated from the roots of Aceriphyllum rossii. Their structures were elucidated on the basis of spectroscopic analyses and chemical evidence. These isolated compounds exhibited weak cytotoxic activity against various cancer cell lines with IC50 > 150 mu M.
