摘要：

There have been few reports on the constituents and biological activity of stem bark of , and no phytochemical and biological studies have been reported for stem wood of . Two flavan 3-ols (1 and 2), three phenolic acid/alcohols (3~5), and two coumarins (6 and 7) were isolated from the stem wood of by repeated column chromatography. The structure of isolated compounds were identified as (+)-catechin (1), (-)-epicatechin (2), -hydroxybenzaldehyde (3), syringic alcohol (4), -tyrosol (5), scopoletin (6), and cleomiscosin A (7) on the basis of spectroscopic evidences such as -NMR, -NMR, 2D-NMR and MS spectrum. -Hydroxybenzaldehyde (3), syringic alcohol (4), scopoletin (6), and cleomiscosin A (7) have not been reported from this plant so far. (+)-Catechin (1) and (-)-epicatechin (2) showed the higher 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity than butylated hydroxyanisole (BHA) used as a positive control.

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