[Chemical constituents from leaf of Rhododendron przewalskii].

ABSTRACT

OBJECTIVE: To study the chemical constituents from the leaf of Rhododendron przewalskii. METHODS: Isolate and purify compounds by chromatographic methods, and identify structures by spectroscopic methods. RESULTS: Six compounds were isolated and identified as hyperin (1), avicularin (2), gossypetin-3-O-ß-D-galactoside (3), quercetin (4), betuloside (5) and ß-sitosterol (6). CONCLUSION: Compounds 1-4 and 6 are isolated from Rhododendron przewalskii for the frist time.