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High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
Two new compounds from the leaves of Calocedrus microlepic var. formosana
Shih-Chang Chien1, Han-Kang Liu, Yueh-Hsiung Kuo
1Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, ROC.
Chemical & Pharmaceutical Bulletin
|June 10, 2004
Abstract:
Two new compounds, 15-methoxypinusolidic acid (1) and isonerylgeraniol-18-oic acid (2) together with four knowns taiwaniaflavone (3), nerylgeraniol-18-oic acid (4), 3-(3,4-dihydroxyphenyl)-1-propanol (5), and amentoflavone (6) are isolated from the leaves of Calocedrus microlepic var. formosana. Compounds 1 and 2 were elucidated as labdane diterpene and linear diterpene, respectively, through spectral studies.
