Chemical Constituents from Roots of Achyranthes bidentata

Twelve compounds were isolated from the roots of Achyranthes bidentata Blume.On the basis of spectral data,they were identified as polypodine B(1),shidasterone(2),oleanolic acid(3),oleanolic acid 3-O-βD-glucuronopyranoside-6′-O-methyl ester(4),chikusetsusaponin Ⅵa methyl ester(5),N-cis-feruloyltyramine(6),N-cis-feruloyl-3-methoxytyramine(7),N-trans-feruloyltyramine(8),N-trans-feruloyl-3-methoxytyramine(9),tianshic acid(10),(9E)-8,11,12-trihydroxyoctadecenoic acid methyl ester(11) and linoleic acid(12).Compounds 2,6,7,and 10 – 12 were obtained from the plant for the first time.