Natural Product Research 2015
Drybonioside, a new glucoside from the Drynaria bonii H. Christ rhizomes.
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Drynaria bonii H. Christ, a Vietnam traditional medicinal plant, is used for the treatment of osteoporosis, bone fractures, tinnitus, etc. (Ho PH. 2002. Vietnamese plants. Hanoi: Publisher of Young; Loi DT. 2004. Medicinal plants and remedy of Vietnam. Hanoi: Publisher of Medicine). Based on column chromatography, a new glucoside named drybonioside (5) and four known compounds α-tocopherol (1), 24-methylencycloartan-3β-ol (2), triphyllol (3) and ethyl β-D-fructopyranoside (4) were isolated and identified from hexane and methanol extracts of D. bonii. The structures of new compound were elucidated on the basis of NMR and MS spectroscopic analysis.