(1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B

The title compound, C(20)H(24)O(5), isolated from Rabdosia var. lophanthoides Hara, is built up from six fused rings. Cyclo­hexane ring A adopts a chair conformation, ring B exists in a screw-boat conformation and ring C adopts a boat conformation; the three five-membered rings D, E and F adopt enve...

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Detalles Bibliográficos
Autor principal: Shi, Hao
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2007
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2915036/
https://www.ncbi.nlm.nih.gov/pubmed/21200956
http://dx.doi.org/10.1107/S1600536807060692
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author Shi, Hao
author_facet Shi, Hao
author_sort Shi, Hao
collection PubMed
description The title compound, C(20)H(24)O(5), isolated from Rabdosia var. lophanthoides Hara, is built up from six fused rings. Cyclo­hexane ring A adopts a chair conformation, ring B exists in a screw-boat conformation and ring C adopts a boat conformation; the three five-membered rings D, E and F adopt envelope conformations.
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spelling pubmed-29150362010-12-30 (1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B Shi, Hao Acta Crystallogr Sect E Struct Rep Online Organic Papers The title compound, C(20)H(24)O(5), isolated from Rabdosia var. lophanthoides Hara, is built up from six fused rings. Cyclo­hexane ring A adopts a chair conformation, ring B exists in a screw-boat conformation and ring C adopts a boat conformation; the three five-membered rings D, E and F adopt envelope conformations. International Union of Crystallography 2007-12-06 /pmc/articles/PMC2915036/ /pubmed/21200956 http://dx.doi.org/10.1107/S1600536807060692 Text en © International Union of Crystallography 2008 http://journals.iucr.org/services/termsofuse.html This is an open-access article distributed under the terms described at http://journals.iucr.org/services/termsofuse.html.
spellingShingle Organic Papers
Shi, Hao
(1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B
title (1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B
title_full (1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B
title_fullStr (1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B
title_full_unstemmed (1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B
title_short (1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin B
title_sort (1s*,2s*,5r*,8s*,11s*,14r*,17s*,20r*)-14-methyl-6-methyl­ene-10,16,18-trioxa­hexa­cyclo­[12.5.1.1(5,8).0(1,11).0(2,8).0(17,20)]henicosane-7,9-dione: natural diter­penoid macrocalyxoformin b
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2915036/
https://www.ncbi.nlm.nih.gov/pubmed/21200956
http://dx.doi.org/10.1107/S1600536807060692
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