A second polymorph of β-arteether
The crystal structure of the title compound, C17H28O5, reported here is a polymorph of the structure first reported by El-Feraly, Al-Yahya, Orabi, McPhail & McPhail [J. Nat. Prod. (1992). 55, 878–883]. It is a derivative of the antimalaria compound artemisinin and consists primarily of...
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International Union of Crystallography
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Series: | Acta Crystallographica Section E |
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doaj-97fa1c9e9f7d482ea702672cfbb978442020-11-25T01:50:51ZengInternational Union of CrystallographyActa Crystallographica Section E1600-53682008-03-01643o585o58610.1107/S1600536807062812A second polymorph of β-arteetherT. V. SreevidyaB. NarayanaH. S. YathirajanRay J. ButcherJerry P. JasinskiThe crystal structure of the title compound, C17H28O5, reported here is a polymorph of the structure first reported by El-Feraly, Al-Yahya, Orabi, McPhail & McPhail [J. Nat. Prod. (1992). 55, 878–883]. It is a derivative of the antimalaria compound artemisinin and consists primarily of three substituted ring systems fused together. A cyclohexane ring (distorted chair conformation) fused to a tetrahydropyran group (distorted chair) is adjacent to an oxacycloheptane unit containing an endo-peroxide bridge, giving the molecule its particular three-dimensional arrangement. The crystal packing is stabilized by intermolecular C—H...O interactions between an O atom from the endo-peroxide bridge and H atoms from both the cyclohexane and seven-membered oxacycloheptane fused rings, as well as between an O atom and H atom from adjacent tetrahydropyran rings. The two polymorphs have the same space group and similar cell parameters for the a and b axes, but significantly different values for the c axis.http://scripts.iucr.org/cgi-bin/paper?S1600536807062812 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T. V. Sreevidya B. Narayana H. S. Yathirajan Ray J. Butcher Jerry P. Jasinski |
spellingShingle |
T. V. Sreevidya B. Narayana H. S. Yathirajan Ray J. Butcher Jerry P. Jasinski A second polymorph of β-arteether Acta Crystallographica Section E |
author_facet |
T. V. Sreevidya B. Narayana H. S. Yathirajan Ray J. Butcher Jerry P. Jasinski |
author_sort |
T. V. Sreevidya |
title |
A second polymorph of β-arteether |
title_short |
A second polymorph of β-arteether |
title_full |
A second polymorph of β-arteether |
title_fullStr |
A second polymorph of β-arteether |
title_full_unstemmed |
A second polymorph of β-arteether |
title_sort |
second polymorph of β-arteether |
publisher |
International Union of Crystallography |
series |
Acta Crystallographica Section E |
issn |
1600-5368 |
publishDate |
2008-03-01 |
description |
The crystal structure of the title compound, C17H28O5, reported here is a polymorph of the structure first reported by El-Feraly, Al-Yahya, Orabi, McPhail & McPhail [J. Nat. Prod. (1992). 55, 878–883]. It is a derivative of the antimalaria compound artemisinin and consists primarily of three substituted ring systems fused together. A cyclohexane ring (distorted chair conformation) fused to a tetrahydropyran group (distorted chair) is adjacent to an oxacycloheptane unit containing an endo-peroxide bridge, giving the molecule its particular three-dimensional arrangement. The crystal packing is stabilized by intermolecular C—H...O interactions between an O atom from the endo-peroxide bridge and H atoms from both the cyclohexane and seven-membered oxacycloheptane fused rings, as well as between an O atom and H atom from adjacent tetrahydropyran rings. The two polymorphs have the same space group and similar cell parameters for the a and b axes, but significantly different values for the c axis. |
url |
http://scripts.iucr.org/cgi-bin/paper?S1600536807062812 |
work_keys_str_mv |
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