Journal of the Chemical Society. Perkin transactions I p. 661 - 668 (1984)
Update date:2022-08-05
Topics:
Ishii, Hiroshi
Tori, Kazuo
Tozyo, Takehiko
Yoshimura, Yohko
Seventeen new saponins (2)-(18) have been isolated from the roots of Platycodon grandiflorum A.DC. and their structures determined by comparison of their 13C n.m.r. signals with those of known prosapogenins (19)-(26) and of the sugar chain at C-28 in platycodin-D (1).Eight of these saponins were found to have an O-acetyl group which migrated both readily and reversibly between the 2-O- and 3-O-positions of the rhamnose moiety in their sugar chain.
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