Studies on teh Constitutents of Aster scaber THUNB.I. Structures of Scaberosides, Oleanolic Acid Glycosides Isolated from the Root
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概要
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Six oleanolic aicd glucuronide saponins, scaberosides B_1,B_2,B_3,B_4,B_5 and B_6 were isolated from the root of Aster scaber THUNB. (Compositae) as their methyl esters, and their structures were determined based on spectral and cheimical evidence. Scaberosides have a common prosapogenin structure, oleanolic acid 3-O-glucopyranosiduronic acid, and differ in the structures of the 28-O-linked sugar moieties.Scaberoside B_1 is a 28-[α-L-arabinopyranosyl] ester, scaberoside B_2,a 28-[β-D-xylopyranosyl] ester, scaberoside B_3,a 28-[O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl] ester, and scaberoside B_4,a 28-[O-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranosyl] ester, scaberoside B_5,a 28-[O-β-D-xylopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl] ester, scaberoside B_6,a 28-{O-β-xylopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranosyl] ester of the prosapogenin.
- 1991-07-25
著者
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長尾 常敦
福岡大
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岡部 光
Faculty Of Pharmaceutical Sciences Fukuoka University
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岡部 光
福岡大学
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Okabe Hikaru
福岡大学 薬学部
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田中 龍一郎
Faculty of Pharmaceutical Sciences, Setsunan University
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長尾 常敦
Faculty of Pharmaceutical Sciences, Fukuoka University
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田中 龍一郎
Faculty Of Pharmaceutical Sciences Fukuoka University
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