A new triterpene, 25-methylenecyclopholidonyl p-hydroxy-trans-cinnamate, was isolated from a orchid Pholidota yunnanensis. The structure elucidation and H, 1 13 C-NMR assignments were achieved by spectral and chemical...A new triterpene, 25-methylenecyclopholidonyl p-hydroxy-trans-cinnamate, was isolated from a orchid Pholidota yunnanensis. The structure elucidation and H, 1 13 C-NMR assignments were achieved by spectral and chemical method.展开更多
文摘A new triterpene, 25-methylenecyclopholidonyl p-hydroxy-trans-cinnamate, was isolated from a orchid Pholidota yunnanensis. The structure elucidation and H, 1 13 C-NMR assignments were achieved by spectral and chemical method.
