title: Studies on orchidaceae alkaloids. XXV. N-isopentenyl derivatives of dendroxine and 6-hydroxydendroxine from Dendrobium friedricksianum Lindl. and Dendrobium hildebrandii Rolfe.
mesh_terms: D000470:Alkaloids / Q000032:analysis*; D066298:In Vitro Techniques; D009904:Optical Rotation; D010944:Plants / Q000032:analysis*; D000644:Quaternary Ammonium Compounds / Q000032:analysis*; D013057:Spectrum Analysis
chemical_list: D000470:Alkaloids; D000644:Quaternary Ammonium Compounds