Structure elucidation and complete NMR spectral assignments of two new oleanane‐type pentacyclic triterpenoid saponins from the husks of Xanthoceras sorbifolia Bunge |
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| Authors: | Ying Guo De‐Qiang Dou Ting‐Guo Kang Shi‐Cheng Wang Hai‐Xue Kuang |
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| Affiliation: | 1. College of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life one Road, DD Port, Dalian 116600, China;2. Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road Shenhe District, Shenyang 110016, China;3. College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, 24 Heping Road, Harbin 150040, China |
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| Abstract: | Two new saponins were isolated from husks of Xanthoceras sorbifolia Bunge and their structures were elucidated as 3‐O‐[β‐D‐galactopyranosyl(1→2)]‐α‐L‐arabinofuranosyl(1→3)‐β‐D‐methyl glucuronic acid‐21‐O‐(3,4‐diangeloyl)‐α‐L‐rhamnose‐3β, 16α, 21β, 22α, 28β‐pentahydroxyl‐22‐acetoxy‐olean‐12‐ene(1) and 3‐O‐[β‐D‐galactopyranosyl(1→2)]‐α‐L‐arabinofuranosyl(1→3)‐β‐D‐methyl glucuronic acid‐21,22‐O‐diangeloyl‐3β,15α,16α,21β,22α,28β‐hexahydroxyl‐olean‐12‐ene(2) on the basis of 1D and 2D NMR (including 1H, 13C‐NMR, 1H? 1H COSY, HSQC, HMBC and DEPT), ESI‐MS spectrometry and chemical methods. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | NMR 1H 13C saponin Xanthoceras sorbifolia Bunge |
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