A new phenethyl alcohol glycoside, galactosylmartynoside (1), and a new abietatriene-type diterpene glycoside, ajugaside A (2), were isolated from the whole plants of Ajuga decumbens, together with known phenethyl alcohol glycosides (3 and 4) and iridoid glycosides (5-7). Chemical structures were elucidated on the basis of spectral data. Of these compounds, 8-acetylharpagide (6) exhibited the strongest inhibitory effect on Epstein-Barr virus activation induced by 12-O-tetradecanoylphorbol-13-acetate.
diterpenes, phenylpropanoid glycosides, tumor-promoting activities
NCBI PubMed ID: 9748375Publication DOI: 10.1021/np980148kJournal NLM ID: 7906882Publisher: American Society of Pharmacognosy
Institutions: Faculty of Pharmacy, Meijo University, Nagoya, Japan, Kyoto Pharmaceutical University, Kyoto, Japan
Methods: 13C NMR, 1H NMR, NOE, IR, acid hydrolysis, HPLC, UV, extraction, optical rotation measurement, CC, melting point determination, HMBC, antitumor activity assay, DEPT, COSY, HOHAHA, HSQC, HR-FAB-MS