Author's Organization:Faculty of Pharmaceutical Sciences Higashi Nippon Gakuen University Faculty of Pharmaceutical Sciences Higashi Nippon Gakuen University Faculty of Pharmaceutical Sciences Higashi Nippon Gakuen University
The position of glucose linkage in phillyrin (1) was established to be at C-4"by the discussion of 13C nuclear magnetic resonance (13C-NMR) spectra of phillygenin methyl ether (2), phillygenin (3) and phillygenin acetate (4).