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Ee, Gwendoline Cheng Lian and Mohamed Tahir, Mohamed Ibrahim and Silong, Sidik and Wei, Chung Sim and Huey, Chong Kwong (2010) 1,3,6-Trihy­droxy-7-meth­oxy-2,8-bis­(3-methyl­but-2-en­yl)-9H-xanthen-9-one. Acta Crystallographica Section E: Structure Reports Online, 66 (12). pp. 3362-3363. ISSN 1600-5368

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The title compound (trivial name α-mangostin), C24H26O6, isolated from Cratoxylum glaucum, is characterized by a xanthone skeleton of three fused six-membered rings and two 3-methyl­but-2-enyl side chains. The three rings in the structure are nearly coplanar, with an r.m.s. deviation for the tricyclic ring system of 0.0014 Å. The two 3-methyl­but-2-enyl side chains are in (+)-synclinal and (-)-anti­clinal conformations. Intra­molecular O—H[cdots, three dots, centered]O and C—H[cdots, three dots, centered]O inter­actions occur. The crystal structure is stabilized by inter­molecular O—H[cdots, three dots, centered]O, C—H[cdots, three dots, centered]O and C—H[cdots, three dots, centered]π inter­actions.

Item Type:Article
Keyword:single-crystal x-ray study
Faculty or Institute:Faculty of Science
Publisher:International Union of Crystallography
DOI Number:10.1107/S1600536810049123
ID Code:12629
Deposited By: Najwani Amir Sariffudin
Deposited On:22 Jul 2011 15:37
Last Modified:10 Sep 2015 11:42

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