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Título: | New phytoecdysteroids from cultured plants of Ajuga nipponensis Makino |
Autor: | Coll Toledano, Josep; Tandrón, Yudelsy A.; Zeng, Xinnian |
Palabras clave: | Phytoecdysteroid Ajuga nipponensis Makino NMR 22-Dehydrocyasterone 2-glucoside Ajugacetalsterone A Ajugacetalsterone B |
Fecha de publicación: | 8-ene-2007 |
Editor: | Elsevier |
Citación: | Steroids 72(3): 270-277 (2007) |
Resumen: | An extract from aerial parts of Ajuga nipponensis Makinowas examined by high performance liquid chromatography for minor ecdysteroids. Along with the compounds already reported, namely cyasterone, ajugasterone C, cyasterone 22-acetate and 22-dehydrocyasterone, the presence of three additional bands with the expected ecdysteroid-like UV absorption was observed. The structures of the isolates were unambiguously elucidated based on extensive NMR spectral studies (one and two-dimensional experiments) and pointed out three new phytoecdysteroids. One of the new compounds, 22-dehydrocyasterone 2-glucoside is just the second example of a C-2 glucosyl derivative. The other two compounds displayed hemiacetal functions in the side chain, one unprecedented, and were named ajugacetalsterone A and B. |
Descripción: | 8 pages, 6 figures.-- PMID: 17210166 [PubMed]. |
Versión del editor: | http://dx.doi.org/10.1016/j.steroids.2006.11.017 |
URI: | http://hdl.handle.net/10261/9303 |
DOI: | 10.1016/j.steroids.2006.11.017 |
ISSN: | 0039-128x |
Aparece en las colecciones: | (IQAC) Artículos |
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