摘 要 ：A new germacrane sesquiterpene was obtained from the roots of L. Dentata which was a folk herb medicine in China- Its structure was elucidated to be 1α, 4β, 6α, 10a-tetrahy-droxy-3β, 5a, 8a-triangeloyloxygermacr-11-en-9-one with the spectroscopic techniques (such as IR, MS, 1H NMR, 13C NMR and 2D-NM...