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Abstract:

From Acnistus breviflorus the new 27-hydroxy-5β,6β-epoxy-1-oxo-(22R)-witha-24-enolide (2,3-dihydrojaborosalactone A) as well as seven known withanolides, withaferin A, 2,3-dihydrowithaferin A, 6α-chloro-5β-hydroxywithaferin A, 5,6-deoxywithaferin A, jaborosalactone A, jaborosalactone D and jaborosalactone E were isolated and characterized by means of spectroscopic (1H NMR, 13 C NMR and mass spectral) methods. Depending on the extraction solvent (methanol or ethanol), a known artifact (3β-methoxy-2,3-dihydrowithaferin A) and the new 5α-methoxy-4,5-dihydrojaborosalactone B and 5α-ethoxy-4,5-dihydrojaborosalactone B were also isolated and characterized. © 1985.

Registro:

Documento: Artículo
Título:2,3-dihydrojaborosalactone A, a withanolide from Acnistus breviflorus
Autor:Veleiro, A.S.; Burton, G.; Gros, E.G.
Filiación:Departamento de Química Orgánica, UMYMFOR, Facultad de Ciencias Exactas y Naturales, Pab. 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:2,3-dihydrojaborosalactone A; 5α-ethoxy-4,5-dihydrojaborosalactone B.; 5α-methoxy-4,5-dihydrojaborosalactone B; Acnistus breviflorus; Solanaceae; withanolide
Año:1985
Volumen:24
Número:8
Página de inicio:1799
Página de fin:1802
DOI: http://dx.doi.org/10.1016/S0031-9422(00)82554-6
Título revista:Phytochemistry
Título revista abreviado:Phytochemistry
ISSN:00319422
CODEN:PYTCA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319422_v24_n8_p1799_Veleiro

Referencias:

  • Nittala, Lavie, (1981) Phytochemistry, 20, p. 2735
  • Bukovits, Gros, (1979) Phytochemistry, 18, p. 1237
  • Bukovits, Gros, (1981) An. Asoc. Quim. Argent., 69, p. 7
  • Tschesche, Schwang, Legler, (1966) Tetrahedron, 22, p. 1121
  • Tschesche, Schwang, Fehlhaber, Snatzke, (1966) Tetrahedron, 22, p. 1129
  • Tschesche, Baumgarth, Welzel, (1968) Tetrahedron, 24, p. 5169
  • Lavie, Glotter, Shvo, 1371. Constituents of Withania somnifera Dun. Part IV. The structure of withaferin A (1965) Journal of the Chemical Society (Resumed), p. 7517
  • Kupchan, Anderson, Bollinger, Doskotch, Smith, Saenz Renauld, Schnoes, Smith, (1969) J. Org. Chem., 34, p. 3858
  • Burton, Veleiro, Gros, (1982) J. Chromatogr., 248, p. 472
  • Vande Velde, Lavie, (1981) Phytochemistry, 20, p. 1359
  • Nittala, Vande Velde, Frolow, Lavie, (1981) Phytochemistry, 20, p. 2547

Citas:

---------- APA ----------
Veleiro, A.S., Burton, G. & Gros, E.G. (1985) . 2,3-dihydrojaborosalactone A, a withanolide from Acnistus breviflorus. Phytochemistry, 24(8), 1799-1802.
http://dx.doi.org/10.1016/S0031-9422(00)82554-6
---------- CHICAGO ----------
Veleiro, A.S., Burton, G., Gros, E.G. "2,3-dihydrojaborosalactone A, a withanolide from Acnistus breviflorus" . Phytochemistry 24, no. 8 (1985) : 1799-1802.
http://dx.doi.org/10.1016/S0031-9422(00)82554-6
---------- MLA ----------
Veleiro, A.S., Burton, G., Gros, E.G. "2,3-dihydrojaborosalactone A, a withanolide from Acnistus breviflorus" . Phytochemistry, vol. 24, no. 8, 1985, pp. 1799-1802.
http://dx.doi.org/10.1016/S0031-9422(00)82554-6
---------- VANCOUVER ----------
Veleiro, A.S., Burton, G., Gros, E.G. 2,3-dihydrojaborosalactone A, a withanolide from Acnistus breviflorus. Phytochemistry. 1985;24(8):1799-1802.
http://dx.doi.org/10.1016/S0031-9422(00)82554-6