18,20-Hemiacetal-type and other withanolides from Dunalia brachyacantha
Two Dunalia brachyacantha specimens collected at different locations in Argentina were investigated separately. The 18,20-hemiacetal-type withanolides (17S,20R,22R,24S,25R)-4β-acetyloxy-5β,6β:18,20-diepoxy-18- hydroxy-1-oxowitha-2-enolide (1) and (17S,20R,22R)-4β-acetyloxy- 5β,6β:18,20-diepoxy-18-hy...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
1999
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| LEADER | 04887caa a22006737a 4500 | ||
|---|---|---|---|
| 001 | PAPER-2628 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203204.0 | ||
| 008 | 190411s1999 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0032769162 | |
| 024 | 7 | |2 cas |a withanolide, 40326-62-3 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a JNPRD | ||
| 100 | 1 | |a Silva, G.L. | |
| 245 | 1 | 0 | |a 18,20-Hemiacetal-type and other withanolides from Dunalia brachyacantha |
| 260 | |c 1999 | ||
| 270 | 1 | 0 | |m Oberti, J.C.; Departamento de Quimica Organica, IMBIV, Universidad Nacional de Cordoba, Ciudad Universitaria, 5000 Cordoba, Argentina |
| 506 | |2 openaire |e Política editorial | ||
| 504 | |a Ray, A.B., Gupta, M., (1994) Prog. Chem. Org. Nat. Prod., 63, pp. 1-106 | ||
| 504 | |a Srivastava, C., Siddiqui, I.R., Singh, J., Tiwari, H.P., (1992) J. Indian Chem. Soc., 69, p. 111 | ||
| 504 | |a Hunziker, A.T., (1960) Bol. Acad. Nac. Ci. Córdoba, 41, pp. 211-244. , Entr. cf. p. 236 | ||
| 504 | |a Hunziker, A.T., (1982) Kurtziana, 15, pp. 81-102 | ||
| 504 | |a Hunziker, A.T., (1984) Kurtziana, 17, pp. 91-118 | ||
| 504 | |a Conta, A.G., Albónico, S.M., Juliani, H.R., (1971) Anales Asoc. Quím. Argentina, 59, pp. 373-375 | ||
| 504 | |a Luis, J.G., Echeverri, F., Gonzalez, A.G., (1994) Phytochemistry, 36, pp. 769-772 | ||
| 504 | |a Luis, J.G., Echeverri, F., Gonzalez, A.G., (1994) Phytochemistry, 36, pp. 1297-1301 | ||
| 504 | |a Luis, J.G., Echeverri, F., García, F., Rojas, M., (1994) Planta Med., 60, pp. 348-350 | ||
| 504 | |a Adam, G., Chien, N.Q., Khoi, N.H., (1984) Phytochemistry, 23, pp. 2293-2297 | ||
| 504 | |a Lischewski, M., Hang, N.T.B., Porzel, A., Adam, G., Massiot, G., Lavaud, C., (1992) Phytochemistry, 31, pp. 939-942 | ||
| 504 | |a Kupchan, S.M., Anderson, W.K., Bollinger, P., Doskotch, R.W., Smith, R.M., Saenz Renauld, J.A., Schnols, H.K., Smith, D.H., (1969) J. Org. Chem., 34, pp. 3858-3866 | ||
| 504 | |a Alfonso, D., Kapetanidis, I., Bernardinelli, G., (1991) J. Nat. Prod., 54, pp. 1576-1582 | ||
| 504 | |a Glotter, E., Kirson, I., Abraham, A., Subramanian, S.S., Sethi, P.D., (1975) J. Chem. Soc., Perkin Trans. 1, pp. 1370-1374 | ||
| 504 | |a Kennelly, E.J., Gerhäuser, C., Song, L.L., Graham, J.G., Beecher, C.W.W., Pezzuto, J.M., Kinghorn, A.D., (1997) J. Agric. Food Chem., 45, pp. 3771-3777 | ||
| 504 | |a Lavie, D., Kirson, I., Glotter, E., Snatzke, G., (1970) Tetrahedron, 26, pp. 2221-2228 | ||
| 504 | |a Nittala, S.S., Lavie, D., (1981) Phytochemistry, 20, pp. 2735-2739 | ||
| 504 | |a Haasnoot, C.A.G., De Leeuw, F.A.A.M., Altona, C., (1980) Tetrahedron, 36, pp. 2783-2792 | ||
| 520 | 3 | |a Two Dunalia brachyacantha specimens collected at different locations in Argentina were investigated separately. The 18,20-hemiacetal-type withanolides (17S,20R,22R,24S,25R)-4β-acetyloxy-5β,6β:18,20-diepoxy-18- hydroxy-1-oxowitha-2-enolide (1) and (17S,20R,22R)-4β-acetyloxy- 5β,6β:18,20-diepoxy-18-hydroxy-1-oxowitha-2,24-dienolide (2) were isolated from the first collection, both as mixtures epimeric at C-18. The second collection contained instead (17R,20S,22R)-5β,6β-epoxy-4β,16α-dihydroxy- 1-oxowitha-2,24-dienolide (3); (17R,20S,22R)-5β,6β-epoxy-4β,18-dihydroxy- 1-oxowitha-2,24-dienolide (4), and (17R,20S,22R)-5β,6β-epoxy-4β,16α- dihydroxy-1,18-dioxowitha-2,24-dienolide (5). All five new withanolides (15) bear an A and B ring substitution pattern similar to that of withaferin A, and their structural elucidation was achieved by spectroscopic techniques. |l eng | |
| 593 | |a Depto. de Quimica Organica, Facultad de Ciencias Químicas, Ciudad Universitaria, 5000 Córdoba, Argentina | ||
| 593 | |a Depto. de Quimica Organica, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a PLANT EXTRACT |
| 690 | 1 | 0 | |a WITHANOLIDE |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a CHEMICAL ANALYSIS |
| 690 | 1 | 0 | |a CHEMICAL STRUCTURE |
| 690 | 1 | 0 | |a PLANT |
| 690 | 1 | 0 | |a PLANT LEAF |
| 690 | 1 | 0 | |a SPECTROSCOPY |
| 690 | 1 | 0 | |a DUNALIA BRACHYACANTHA |
| 651 | 4 | |a ARGENTINA | |
| 700 | 1 | |a Burton, G. | |
| 700 | 1 | |a Oberti, J.C. | |
| 773 | 0 | |d 1999 |g v. 62 |h pp. 949-953 |k n. 7 |p J. Nat. Prod. |x 01633864 |t Journal of Natural Products | |
| 856 | 4 | 1 | |u https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032769162&doi=10.1021%2fnp9804536&partnerID=40&md5=e782ebf8ab41bb58da7fa64149bae985 |y Registro en Scopus |
| 856 | 4 | 0 | |u https://doi.org/10.1021/np9804536 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_01633864_v62_n7_p949_Silva |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01633864_v62_n7_p949_Silva |y Registro en la Biblioteca Digital |
| 961 | |a paper_01633864_v62_n7_p949_Silva |b paper |c PE | ||
| 962 | |a info:eu-repo/semantics/article |a info:ar-repo/semantics/artículo |b info:eu-repo/semantics/publishedVersion | ||
| 999 | |c 63581 | ||