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Two New Lupane-Triterpene Glycosides from Leaves of Acanthopanax koreanum.

Seung‐Yeup Chang, Chang‐Soo Yook, Toshihiro Nohara

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Abstract

Two new lupane-triterpene glycosides, acankoreoside A (1) and B (2), were isolated from the leaves of Acanthopanax koreanum NAKAI (Araliaceae). Based on spectroscopic data, the chemical structures of 1 and 2 were determined as 3α-hydroxy-lup-20(29)-en-23, 28-dioic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester and 3α, 11α, 23-trihydroxy-lup-20(29)-en-28-oic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl- (1→6)-β-D-glucopyranosyl ester, respectively.

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What this paper is about

Two new lupane-triterpene glycosides, acankoreoside A (1) and B (2), were isolated from the leaves of Acanthopanax koreanum NAKAI (Araliaceae). Based on spectroscopic data, the chemical structures of 1 and 2 were determined as 3α-hydroxy-lup-20(29)-en-23, 28-dioic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester and 3α, 11α, 23-trihydroxy-lup-20(29)-en-28-oic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl- (1→6)-β-D-glucopyranosyl ester, respectively.

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Available abstract

Two new lupane-triterpene glycosides, acankoreoside A (1) and B (2), were isolated from the leaves of Acanthopanax koreanum NAKAI (Araliaceae). Based on spectroscopic data, the chemical structures of 1 and 2 were determined as 3α-hydroxy-lup-20(29)-en-23, 28-dioic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester and 3α, 11α, 23-trihydroxy-lup-20(29)-en-28-oic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl- (1→6)-β-D-glucopyranosyl ester, respectively.

Key concepts: Triterpene, Araliaceae, Chemistry, Glycoside, Stereochemistry, Saponin, Triterpenoid, Trisaccharide

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