Studies on the Active Compounds to Relieve Cough and Dyspnea from Rhododendron dauricum
Abstract:ObjectiveTo study the natural products to treat cough and dyspnea from Rhododendron dauricum.MethodsActive compounds were isolated by macroporous absorption resin,silica gel columns and other modern chromatographic method.Seven chemical constituents were identified on the basis of chemical methods and spectral evidences. ResultsFrom this plant, seven active compounds were isolated. They were determined as farrerol, myricetin ,quercetin, taxifolin, umbelliferone, hyperin and juniper camphor. ConclusionThe results supplied the researching base to develop the effective part of Folium Rhododendri Daurici as the new medicine.