(E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime

In the penta­cyclic triterpenoide skeleton of the title mol­ecule, C(27)H(43)NO(2) [systematic name: (3E,3aS,5aR,5bR,7aR,11R,11aR,11bR,13aR,13bR)-5a,5b,10,10,13b-penta­methyl­icosa­hydro-1H-11,7a-(epoxy­methano)cyclo­penta­[a]chrysen-3-one oxime], the five-membered ring A has an envelope conformatio...

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Autores principales: Froelich, Anna, Kazakova, Oxana B., Tolstikov, Genrikh, Gzella, Andrzej K.
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2009
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969752/
https://www.ncbi.nlm.nih.gov/pubmed/21583127
http://dx.doi.org/10.1107/S1600536809016675
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author Froelich, Anna
Kazakova, Oxana B.
Tolstikov, Genrikh
Gzella, Andrzej K.
author_facet Froelich, Anna
Kazakova, Oxana B.
Tolstikov, Genrikh
Gzella, Andrzej K.
author_sort Froelich, Anna
collection PubMed
description In the penta­cyclic triterpenoide skeleton of the title mol­ecule, C(27)H(43)NO(2) [systematic name: (3E,3aS,5aR,5bR,7aR,11R,11aR,11bR,13aR,13bR)-5a,5b,10,10,13b-penta­methyl­icosa­hydro-1H-11,7a-(epoxy­methano)cyclo­penta­[a]chrysen-3-one oxime], the five-membered ring A has an envelope conformation, while the six-membered rings B–E adopt chair conformations. Rings A and B are cis-fused. The hydroximino group has an E configuration. Strong inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into helical chains.
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spelling pubmed-29697522010-12-30 (E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime Froelich, Anna Kazakova, Oxana B. Tolstikov, Genrikh Gzella, Andrzej K. Acta Crystallogr Sect E Struct Rep Online Organic Papers In the penta­cyclic triterpenoide skeleton of the title mol­ecule, C(27)H(43)NO(2) [systematic name: (3E,3aS,5aR,5bR,7aR,11R,11aR,11bR,13aR,13bR)-5a,5b,10,10,13b-penta­methyl­icosa­hydro-1H-11,7a-(epoxy­methano)cyclo­penta­[a]chrysen-3-one oxime], the five-membered ring A has an envelope conformation, while the six-membered rings B–E adopt chair conformations. Rings A and B are cis-fused. The hydroximino group has an E configuration. Strong inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into helical chains. International Union of Crystallography 2009-05-14 /pmc/articles/PMC2969752/ /pubmed/21583127 http://dx.doi.org/10.1107/S1600536809016675 Text en © Froelich et al. 2009 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
Froelich, Anna
Kazakova, Oxana B.
Tolstikov, Genrikh
Gzella, Andrzej K.
(E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
title (E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
title_full (E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
title_fullStr (E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
title_full_unstemmed (E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
title_short (E)-17β,19-Epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
title_sort (e)-17β,19-epoxy­methano-17,23,24-tridemethyl-4-nor-5β,18α-olean-3-one oxime
topic Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969752/
https://www.ncbi.nlm.nih.gov/pubmed/21583127
http://dx.doi.org/10.1107/S1600536809016675
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