Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/110441
Título: | 6β-Acetamido-5α-hydroxy-cholestan-3β-yl acetate | Autor: | Pinto, R. M. A. Silva, M. Ramos Beja, A. Matos Salvador, J. A. R. Paixão, J. A. |
Palavras-chave: | single-crystal X-ray study; T = 291 K; mean (C–C) = 0.003 A°; disorder in solvent or counterion; R factor = 0.030; wR factor = 0.055; data-toparameter ratio = 60.9 | Data: | 8-Nov-2008 | Editora: | International Union of Crystallography | Projeto: | FCT | Título da revista, periódico, livro ou evento: | Acta Crystallographica Section E: Structure Reports Online | Volume: | 64 | Número: | Pt 12 | Resumo: | The title steroid, C(31)H(53)NO(4), was prepared from the corresponding 5α,6α-epoxy-cholestane. The conformation of the six-membered rings is close to a chair form, while the five-membered ring adopts a twist conformation. The hydroxyl and acetamide groups are in axial positions. The nucleophilic species bound to the steroid nucleus at position 6 by the β-face, whereas the hydroxyl group at position 5 has α-orientation. All rings are trans-fused. The crystal packing shows that the mol-ecules related by twofold symmetry exist as O-H⋯O hydrogen-bonded dimers. | URI: | https://hdl.handle.net/10316/110441 | ISSN: | 1600-5368 | DOI: | 10.1107/S160053680803568X | Direitos: | openAccess |
Aparece nas coleções: | FFUC- Artigos em Revistas Internacionais FCTUC Física - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Bisglycinium05-perrhenateActa-Crystallographica-Section-E-Structure-Reports-Online.pdf | 398.55 kB | Adobe PDF | Ver/Abrir |
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