Cheng, Gwendoline Lian Ee and Siow, Hwa Teo and Huey, Chong Kwong and Mohamed Tahir, Mohamed Ibrahim and Silong, Sidik (2010) 12-Acetyl-6-hydroxy-3,3,9,9-tetramethylfuro[3,4-b]pyrano[3,2-h]-xanthene-7,11(3H,9H)-dione. Acta Crystallographica Section E-Structure Reports Online, 66 (12). pp. 3331-3332. ISSN 1600-5368
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Official URL: http://dx.doi.org/10.1107/S1600536810048592
Abstract
The title compound, Artonol B, C24H20O7, isolated from the stem bark of Artocarpus kemando, consists of four six-membered rings and one five-membered ring. The tricyclic xanthone ring system is almost planar [maximum deviation 0.115 (5) Å], whereas the pyranoid ring is in a distorted boat conformation·The furan ring is almost coplanar with the fused aromatic ring, making a dihedral angle of 3.76 (9)°. The phenol ring serves as a intramolecular hydrogen-bond donor to the adjacent carbonyl group and also acts as an intermolecular hydrogen-bond acceptor for the methyl groups of adjacent molecules, forming a three-dimensional network in the crystal.
| Item Type: | Article |
|---|---|
| Keyword: | single-crystal X-ray study |
| Subject: | Artocarpus |
| Subject: | Flavonoids |
| Subject: | Chemical structure |
| Faculty or Institute: | Faculty of Science |
| Publisher: | International Union of Crystallography |
| DOI Number: | 10.1107/S1600536810048592 |
| ID Code: | 12630 |
| Deposited By: | Najwani Amir Sariffudin |
| Deposited On: | 12 Aug 2011 11:36 |
| Last Modified: | 12 Aug 2011 11:36 |
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