title: Na-demethyl-purpeline and Na-demethyl-dihydropurpeline, new alkaloids from Rauwolfia cumminsii Stapf.
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D046948:Secologanin Tryptamine Alkaloids / Q000302:isolation & purification*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D046948:Secologanin Tryptamine Alkaloids