From the stems of Alangium premnifolium, collected on Okinawa island, four sesquiterpene (calamenene) glycosides, named alangicadinosides F-I, and four sesquilignan glucosides, named alangisesquins A-D, were isolated. The structures of the glycosides were determined on the basis of spectroscopic evidence.
Alangiaceae, Alangium premnifolium, sesquiterpene glycosides, cadinane glycosides, calamenene glycoside, alangicadinosides F-I, sesquilignan glucoside, alangisesquins A-D
Publication DOI: 10.1016/S0031-9422(98)00076-4Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Faculty of Agriculture, Ryukyu University, Okinawa, Japan, Institute of Pharmaceutical Sciences, Hiroshima Umversity School of Medicine, Hiroshima, Japan, Experimental Forest of Ryukyu University, Okinawa, Japan, 134 Furugen, Yomitan-son, Japan, Faculty of Integrated Arts and Sciences, The University of Tokushima, Tokushirna, Japan
Methods: 13C NMR, 1H NMR, NOE, EI-MS, IR, FAB-MS, HPLC, UV, extraction, optical rotation measurement, acetylation, CC, melting point determination, COSY, HR-FAB-MS, cathalytic reduction