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Three new triterpenoid saponins from the seeds of<i>Aesculus turbinata</i>

Xiu‐Wei YangThe State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing, China. [email protected]Jing Zhao The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing, 100083, ChinaMasao Hattori Institute of Natural Medicines, Toyama Medical & Pharmaceutical University, 2630 Sugitani, Toyama, 930-0194, Japan

2008en

ABI

Annotatsiya

Three new triterpenoid saponins, named isoescins VIIa (1), VIa (2), and VIIIa (3), were isolated from the seeds of Aesculus turbinata and identified by spectroscopic analysis and chemical hydrolysis. Their structures were established as 21beta-O-tigloyl-28-O-acetylprotoaescigenin 3beta-O-[beta-d-galactopyranosyl(1 --> 2)][beta-d-glucopyranosyl(1 --> 4)]-beta-d-glucopyranosiduronic acid (Isoescin VIIa, 1), 21beta-O-(2-methylbutyryl)-28-O-acetylprotoaescigenin 3beta-O-[beta-d-glucopyranosyl(1 --> 2)] [beta-d-glucopyranosyl(1 --> 4)]-beta-d-glucopyranosiduronic acid (Isoescin VIa, 2), and 21beta-O-angeloyl-28-O-acetylbarringtogenol C 3beta-O-[beta-d-glucopyranosyl(1 --> 2)] [beta-d-glucopyranosyl(1 --> 4)]-beta-d-glucopyranosiduronic acid (Isoescin VIIIa, 3).

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DOI: 10.1080/10286020701604904

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