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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >Hobartine: a tetracyclic indole alkaloid extracted from Aristotelia chilensis (maqui)
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Hobartine: a tetracyclic indole alkaloid extracted from Aristotelia chilensis (maqui)

机译:荷巴汀:从智利马兜铃(maristo)提取的四环吲哚生物碱

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摘要

The natural compound hobartine {systematic name: (1R)-3-[(1S,5S)-(4,4,8-trimethylbicyclo[3.3.1]non-7-en-2-yl)methyl]-2,3-dihydro-1H-indole}, C20H26N2, (I), is an indole alkaloid isolated from Aristotelia chilensis as part of a study of secondary metabolites from Chilean flora. The colourless compound has a tetracyclic structure closely related to the strongly coloured polymorphic structures discussed in Paz et al. [Acta Cryst. (2013), C69, 1509–1512] and Watson et al. [Acta Cryst. (1989), C45, 1322–1324]. The main differences reside in the absence of a keto group in (I) compared with the previous structures, as well as an endo double bond in (I) contrasting with the exo double bond found in the previous structures. The supramolecular structure of (I) in strongly related to the twofold screw axis, around which isolated chains build up, internally linked by an N—H...N hydrogen bond which is the only significant intermolecular interaction present in the structure.
机译:天然化合物hobartine {系统名称:(1R)-3-[(1S,5S)-(4,4,8-三甲基双环[3.3.1] non-7-en-2-yl)methyl] -2,3 -二氢-1H-吲哚},C20H26N2,(I),是从智利亚里士多德分离的吲哚生物碱,是研究智利植物群次级代谢产物的一部分。该无色化合物具有四环结构,该四环结构与Paz等人讨论的强烈着色的多态结构密切相关。 [Acta Cryst。 (2013),C69,1509-1512]和Watson等。 [Acta Cryst。 (1989),C45,1322-1324]。与之前的结构相比,主要区别在于(I)中没有酮基,而(I)中的内双键与先前结构中的外双键相反。 (I)的超分子结构与双螺旋轴紧密相关,围绕该双螺旋轴建立分离的链,该链通过NH-N氢键内部连接,这是结构中存在的唯一重要的分子间相互作用。

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