Furanoid Norditerpenes from Dioscorea Plants. VII. Structures of Diosbulbinosides D and F
Two kinds of furanoid norditerpene glucosides, named diosbulbinosides D (I), mp 169-173°(dec.), [α] D-31°, and F (II), mp 193-195°(dec.), [α]350-25°, were isolated from the fresh root tubers of Dioscorea bulbifera L. forma spontanea MAKINO et NEMOTO. On the basis of chemical and spectral evidences I...
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Veröffentlicht in: | Chemical & pharmaceutical bulletin 1978/02/25, Vol.26(2), pp.435-439 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Two kinds of furanoid norditerpene glucosides, named diosbulbinosides D (I), mp 169-173°(dec.), [α] D-31°, and F (II), mp 193-195°(dec.), [α]350-25°, were isolated from the fresh root tubers of Dioscorea bulbifera L. forma spontanea MAKINO et NEMOTO. On the basis of chemical and spectral evidences I and II were assigned the structures, 6-O-β-D-glucopyranosides of the enol forms, 5-en-6-ols, of coexisting diosbulbins D (IV) and F (V), respectively. They are noted as the non-conjugated enol glucosides. |
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ISSN: | 0009-2363 1347-5223 |
DOI: | 10.1248/cpb.26.435 |