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A new apocarotenoid, burmannic acid (1), was isolated from the roots of Cinnamomum burmannii (Nees & T. Nees) Blume (Lauraceae). The structure of the new apocarotenoid was elucidated by chemical and physical evidence.

A new phenylalkanoid, (E)-3-hydroxy-1-(4′-hydroxy-3′,5′-dimethoxyphenyl)-tetradecan-6-en-5-one (1), was isolated from the rhizomes of Chinese ginger (Zingiber officinale Roscoe (Zingiberaceae)). The structure of this new phenylalkanoid was elucidated by chemical and physical evidence.

From the MeOH extract of the leaves and stems of Machilus zuihoensis var. mushaensis, one new lignan, machilolin-B (1), together with 10 known compounds, zuonin B (2), (+)-9,9′-O-diferuloylsecoisolariciresinol (3), (E)-3-(3-hydroxybut-1-enyl)-2,4,4-trimethylcyclohexa-2,5-dienone (4), 5-[(1R,5R,8S)-8-hydroxy-1,5-dimethyl-3-oxo-6-oxabicyclo[3.2.1]oct-8-yl]-3-methyl-2,4-pentadienoic acid (5), vanillin (6), rhamnetin-3-O-β-D-galactopyranoside (7), 2-hydroxy-3,4-dioxopentanal (8), a mixture of β-sitosterol (9) and stigmasterol (10), and β-sitosteryl-β-D-glucoside (11), have been isolated. Among them, compound 3 was demonstrated to have significant cytotoxic activity against the DU145, LNCaP, and A549 cell lines. Compound 11 also possessed moderate antiproliferative activities against DU145 cell lines.