Kotomolide (1), obtusilactone A (2), isoobtusilactone A (3), secokotomolide (4), kaempferol (5), quercetin (6), (-)-catechin (7), (-)-epicatechin (8), (-)-sesamin (9), isoeugenol (10), trans-ferulic acid (11), benzoic acid (12), p-hydroxybenzoic acid (13), p-hydroxybenzaldehyde (14), a mixture of β-sitosterol (15) and stigmasterol (16), and a mixture of β-sitosterol-D-glucoside (17) and stigmasterol-D-glucoside (18) were isolated from the stems of Cinnamomum kotoense Kanehira & Sasaki. Among them, 1 is a new compound. The structures of these compounds were characterized and identified by spectral analyses.
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