Acanthoic acid

The title compound [systematic name: (1R,4aR,7S,8aS,10aS)-1,4a,7-trimethyl-7-vinyl-1,2,3,4,4a,6,7,8,8a,9,10,10a-dodeca­hydro­phenanthrene-1-carb­oxy­lic acid], C(20)H(30)O(2), is a pimarane-type diterpene extracted from Croton oblongifolius. There are two independent mol­ecules in the asymmetric uni...

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Detalles Bibliográficos
Autores principales: Suwancharoen, Sunisa, Tommeurd, Wantanee, Phurat, Chuttree, Muangsin, Nongnuj, Pornpakakul, Surachai
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2010
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3006772/
https://www.ncbi.nlm.nih.gov/pubmed/21587780
http://dx.doi.org/10.1107/S1600536810019483
Descripción
Sumario:The title compound [systematic name: (1R,4aR,7S,8aS,10aS)-1,4a,7-trimethyl-7-vinyl-1,2,3,4,4a,6,7,8,8a,9,10,10a-dodeca­hydro­phenanthrene-1-carb­oxy­lic acid], C(20)H(30)O(2), is a pimarane-type diterpene extracted from Croton oblongifolius. There are two independent mol­ecules in the asymmetric unit. In both of these, the six-membered rings A, B and C adopt chair, boat and half-chair conformations, respectively. Rings A and B are trans-fused. The two mol­ecules in the asymmetric unit form O—H⋯O hydrogen-bonded R (2) (2)(8) dimers. The absolute configuration was assigned on the basis of the published literature on analogous structures.

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