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1984•Journal of the Chemical Society Perkin Transactions 1Requires access

Saponins from roots of Platycodon grandiflorum. Part 2. Isolation and structure of new triterpene glycosides

Hiroshi Ishii, Kazuo Tori, Takehiko Tozyo, Yohko Yoshimura

Open publisher page 75 citations

Abstract

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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What this paper is about

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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Available abstract

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.

Key concepts: Triterpene, Chemistry, Glycoside, Rhamnose, Saponin, Stereochemistry, Sugar, Polysaccharide

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