Isotenulin

Isotenulin, C(17)H(22)O(5), is a sesquiterpene lactone isolated from sneezeweed Helenium amarum. It crystallizes with two independent mol­ecules in the asymmetric unit. In each mol­ecule, two five-membered rings (cyclo­pentenone and lactone) are trans-fused to the central seven-membered ring. The fi...

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Detalles Bibliográficos
Autores principales: Knight, Kyle S., Smith, Cole T., Waddell, Thomas G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2013
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3793783/
https://www.ncbi.nlm.nih.gov/pubmed/24109370
http://dx.doi.org/10.1107/S1600536813019703
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author Knight, Kyle S.
Smith, Cole T.
Waddell, Thomas G.
author_facet Knight, Kyle S.
Smith, Cole T.
Waddell, Thomas G.
author_sort Knight, Kyle S.
collection PubMed
description Isotenulin, C(17)H(22)O(5), is a sesquiterpene lactone isolated from sneezeweed Helenium amarum. It crystallizes with two independent mol­ecules in the asymmetric unit. In each mol­ecule, two five-membered rings (cyclo­pentenone and lactone) are trans-fused to the central seven-membered ring. The five-membered rings each adopt envelope conformations. The seven-membered ring adopts a twist-chair conformation. In the crystal, the molecules are linked by C—H⋯O interactions, which generate a three-dimensional network.
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spelling pubmed-37937832013-10-09 Isotenulin Knight, Kyle S. Smith, Cole T. Waddell, Thomas G. Acta Crystallogr Sect E Struct Rep Online Organic Papers Isotenulin, C(17)H(22)O(5), is a sesquiterpene lactone isolated from sneezeweed Helenium amarum. It crystallizes with two independent mol­ecules in the asymmetric unit. In each mol­ecule, two five-membered rings (cyclo­pentenone and lactone) are trans-fused to the central seven-membered ring. The five-membered rings each adopt envelope conformations. The seven-membered ring adopts a twist-chair conformation. In the crystal, the molecules are linked by C—H⋯O interactions, which generate a three-dimensional network. International Union of Crystallography 2013-07-20 /pmc/articles/PMC3793783/ /pubmed/24109370 http://dx.doi.org/10.1107/S1600536813019703 Text en © Knight et al. 2013 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Organic Papers
Knight, Kyle S.
Smith, Cole T.
Waddell, Thomas G.
Isotenulin
title Isotenulin
title_full Isotenulin
title_fullStr Isotenulin
title_full_unstemmed Isotenulin
title_short Isotenulin
title_sort isotenulin
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3793783/
https://www.ncbi.nlm.nih.gov/pubmed/24109370
http://dx.doi.org/10.1107/S1600536813019703
work_keys_str_mv AT knightkyles isotenulin
AT smithcolet isotenulin
AT waddellthomasg isotenulin

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