Abstract
Dendropanoxide, α-amyrin, β-amyrin, α-acetylamyrin, β-acetylamyrin, friedelin, epifriedelinol, uvaol, ursolic acid, and 18 kinds of paraffin were isolated from etherial extract of the leaves of Rhododendron degronianum CARR. by silica gel column chromatography. From the methanolic extract of the leaves, grayanotoxin I, rhododendrin, quercetin, and isoquercitrin were isolated, and from the aqueous extract of the leaves. 11 kinds of amino acid were identified. Ten kinds of inorganic cation were detected from the ashed leaves.
