[Chemical Constituents from Leaves of Liquidambar formosana].

ABSTRACT

OBJECTIVE: To study the chemical constituents of the leaves of Liquidambarformosana. METHODS: The chemical constituents were isolated and purified by column chromatography on silicagel, Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of physicochemical properties and special analysis. RESULTS: Eight compounds were isolated from the leaves of Liquidambar formosana, whose structures were elucidated as gallic acid (1), p-hydroxy-benzoic acid (2), 3-methoxy-4-hydroxy-benzoic acid (3), 3,5-dihydroxy-4-methoxy-benzoic acid (4) kaempferol (5), 3,4-dihydroxy-benzoic acid (6), 3,4-dihydroxy-5-methoxy-benzoic acid (7) and 3ß,23,29-trihydroxy-olean-12-en-28-oic acid-ß-D-glucopyranosyl ester (8). CONCLUSION: Compounds 1-8 are isolated from the leaves of Liquidambar formosana for the first time.