Pericarp Saponins of Akebia quinata DECNE. II. Arjunolic and Norarjunolic Acids, and Their Glycosides
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概要
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The structures of two free triterpenoids, Y and Z, and two saponins, P_H and P_<J1>, isolated from the fresh pericarps of Akebia quinata DECNE. (Lardizabalaceae) were investigated. Y, mp 317-320°, [α]_D+62°, was identified with arjunolic acid (I), while Z, mp 303-305°, [α]_D+75°, was assigned the structure 20 (29)-dehydro-30-norarjunolic acid (XII) and conventionally named norarjunolic acid. P_H, mp 207-210°(decomp.), [α]_D+3°, was defined as 28-O-α-L-rha・pyr-(1→4)-β-D-glc・pyr-(1→6)-β-D-glucopyranside (XIX) of XII, and P_<J1> was characterized as 28-O-β-D-xyl・pyr-(1→3)-α-L-rha・pyr-(1→4)-β-D-glc・pyr-(1→6)-β-D-glucopyranoside (XXIV') of I. XXIV' is the first arjunolic acid oligoglycoside, and XII and XIX are second to eupteleogenin and eupteleoside, respectively, as a naturally occurring noroleanane derivative and its glycoside.
- 公益社団法人日本薬学会の論文
- 1976-06-25
著者
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川崎 敏男
Faculty of Pharmaceutical Sciences of Kyushu University
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川崎 敏男
Faculty Of Pharmaceutical Sciences Kyushu University
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樋口 隆一
Faculty of Pharmaceutical Sciences, Kyushu University
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樋口 隆一
Faculty Of Pharmaceutical Sciences Kyushu University
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