山茱萸(Olax subscorpioidea, Oliv)茎皮中一种新的轮状双黄酮苷的结构解析

IF 1.9 3区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Magnetic Resonance in Chemistry Pub Date : 2023-06-21 DOI:10.1002/mrc.5375

Bienvenu Tsakem, Billy Tchegnitegni Toussie, Xavier Siwe-Noundou, Beaudelaire Kemvoufo Ponou, Rémy Bertrand Teponno, Syed Ghulam Musharraf, Leon Azefack Tapondjou

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引用次数: 0

摘要

从药用植物山茱萸(Olax subscorpioidea)乙醇提取物的正丁醇可溶部分中，分离到一种先前未报道的由4′- o -甲基没食子儿茶素-(4α→8)-4′- o -甲基没食子儿茶素作为苷元组成的旋美双黄酮苷，命名为olassubscorpioside C(1)和已知的4′- o -甲基没食子儿茶素(2)。通过HRFABMS、1H和13C NMR、DEPT 1350、HSQC、HMBC、ROESY和CD等光谱技术确定其结构，并与报道的数据进行比较。

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Structure elucidation of olasubscorpioside C, a new rotameric biflavonoid glycoside from the stem barks of Olax subscorpioidea (Oliv)

From the n-butanol soluble fraction of the ethanol extract of the medicinal plant Olax subscorpioidea, a previously unreported rotameric biflavonoid glycoside constituted of 4′-O-methylgallocatechin-(4α → 8)-4′-O-methylgallocatechin as aglycone named olasubscorpioside C (1) along with the known 4′-O-methylgallocatechin (2) were isolated. Their structures were determined on the basis of spectrometric and spectroscopic techniques including HRFABMS, ¹H and ¹³C NMR, DEPT 135^o, HSQC, HMBC, ROESY, and CD followed by comparison with the reported data.

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来源期刊

Magnetic Resonance in Chemistry 化学-光谱学

CiteScore

4.70

自引率

10.00%

发文量

审稿时长

1 months

期刊介绍： MRC is devoted to the rapid publication of papers which are concerned with the development of magnetic resonance techniques, or in which the application of such techniques plays a pivotal part. Contributions from scientists working in all areas of NMR, ESR and NQR are invited, and papers describing applications in all branches of chemistry, structural biology and materials chemistry are published. The journal is of particular interest not only to scientists working in academic research, but also those working in commercial organisations who need to keep up-to-date with the latest practical applications of magnetic resonance techniques.