YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
アマチャツルの成分研究(第2報)Gypenoside XV-XXIの化学構造
竹本 常松在原 重信中島 正奥平 恵
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1983 年 103 巻 10 号 p. 1015-1023

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New saponins, named gypenosides XV (1), XVI (2), XVII (3), XVIII (4), XIX (5), XX (6) and XXI (7) were isolated from Gynostemma pentaphyllum MAKINO. On enzymatic hydrolysis, 1, 2, and 3 yielded 20-O-β-D-glucopyranoside of 20 (S)-protopanaxadiol (compound K) (8), and 4, 5, 6 and 7 afforded 20-O-β-D-glucopyranoside of dammar-24-ene-3β, 12β, 20 (S), 26-tetraol (9) as a prosapogenin. The configuration of the sugar linkages in each saponin was established on the basis of chemical and spectroscopic evidence.

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© by the PHARMACEUTICAL SOCIETY OF JAPAN
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