Abstract:
20‐Methylpregna‐4,20‐dien‐3‐one and the corresponding 17α‐hydroxy, 20‐hydroxymethyl and 17α‐hydroxy‐20‐hydroxymethyl derivatives were prepared from the 20‐keto compounds by Wittig reaction or a modified Simmons‐Smith reaction. The 13C NMR spectra of these steroids and of 3‐methylene derivatives are analysed. Solvent effects produced by addition of methanol‐d4 in the spectra of the 20‐methylene steroids are correlated with intramolecular hydrogen bonding in the corresponding 20‐ketosteroids. Copyright © 1988 John Wiley & Sons, Ltd.
Registro:
Documento: |
Artículo
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Título: | Preparation and carbon‐13 NMR study of 3‐ and 20‐methylene analogues of steroid hormones |
Autor: | Gonzalez, M.D.; Burton, G. |
Filiación: | Departamento de Quimica Orgánica, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, 1428, Argentina
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Palabras clave: | 13C NMR Steroid hormones; 20‐Methylenepregnanes; 3‐Methylenepregnanes; Synthesis |
Año: | 1988
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Volumen: | 26
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Número: | 11
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Página de inicio: | 963
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Página de fin: | 966
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DOI: |
http://dx.doi.org/10.1002/mrc.1260261105 |
Título revista: | Magnetic Resonance in Chemistry
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Título revista abreviado: | Magn. Reson. Chem.
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ISSN: | 07491581
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07491581_v26_n11_p963_Gonzalez |
Referencias:
- Gonzalez, M.D., Burton, G., A carbon-13 nuclear magnetic resonance study of the 1,4-diene analogues of steroid hormones and related steroids (1984) Organic Magnetic Resonance, 22, p. 586
- Shoolery, J.N., (1984) J. Nat. Prod., 47, p. 226
- Romo, J., Romero, M., Djerassi, C., Rosenkranz, G., (1951) J. Am. Chem. Soc., 73, p. 1528
- Uskokovic, M., Dorfman, R.I., Gut, M., A Preparation of 3β-Hydroxypregn-5-en-20-one-4-C14 (1958) The Journal of Organic Chemistry, 23, p. 1947
- Nysted, L.N., (1969), G. D. Searle & Co., Ger. Offen. 1 803276, June 4; (1967), US Pat. Appl. Oct. 17; (1969) Chem. Abstr., 71, p. 61686r
- Gonzalez, M.D., Burton, G., (1985) Z. Naturforsch., Teil B, 40, p. 639
Citas:
---------- APA ----------
Gonzalez, M.D. & Burton, G.
(1988)
. Preparation and carbon‐13 NMR study of 3‐ and 20‐methylene analogues of steroid hormones. Magnetic Resonance in Chemistry, 26(11), 963-966.
http://dx.doi.org/10.1002/mrc.1260261105---------- CHICAGO ----------
Gonzalez, M.D., Burton, G.
"Preparation and carbon‐13 NMR study of 3‐ and 20‐methylene analogues of steroid hormones"
. Magnetic Resonance in Chemistry 26, no. 11
(1988) : 963-966.
http://dx.doi.org/10.1002/mrc.1260261105---------- MLA ----------
Gonzalez, M.D., Burton, G.
"Preparation and carbon‐13 NMR study of 3‐ and 20‐methylene analogues of steroid hormones"
. Magnetic Resonance in Chemistry, vol. 26, no. 11, 1988, pp. 963-966.
http://dx.doi.org/10.1002/mrc.1260261105---------- VANCOUVER ----------
Gonzalez, M.D., Burton, G. Preparation and carbon‐13 NMR study of 3‐ and 20‐methylene analogues of steroid hormones. Magn. Reson. Chem. 1988;26(11):963-966.
http://dx.doi.org/10.1002/mrc.1260261105