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http://hdl.handle.net/2445/169248| Title: | Crinine-type alkaloids from Hippeastrum aulicum and H. calyptratum |
| Author: | de Andrade, Jean Paulo Guo, Y. Font Bardia, Ma. Mercedes Calvet Pallàs, Maria Teresa Dutilh, J. H. Viladomat Meya, Francesc Codina Mahrer, Carles Nair, Jerald J. Zuanazzi, José Ângelo Silveira Bastida Armengol, Jaume |
| Keywords: | Alcaloides Radiocristal·lografia Alkaloids X-ray crystallography |
| Issue Date: | Jul-2014 |
| Publisher: | Elsevier Ltd |
| Abstract: | An ongoing search for alkaloids in the Amaryllidaceae species using GC MS resulted in the identification of two crinine-type alkaloids, aulicine (1) and 3-O-methyl-epimacowine, (2) from the indigenous Brazilian species Hippeastrum aulicum and Hippeastrum calyptratum, respectively. In addition, two alkaloids, 11-oxohaemanthamine (3) and 7-methoxy-O-methyllycorenine (4) were both isolated from H. aulicum. Furthermore, we provide here complete NMR spectroscopic data for the homolycorine analogues nerinine (5) and albomaculine (6). The absolute stereochemistry of the 5,10b-ethano bridge in the crinine variants was determined by circular dichroism and X-ray crystallographic analysis, thus presenting the first direct evidence for the presence of crinine-type alkaloids in the genus Hippeastrum. |
| Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.phytochem.2014.03.007 |
| It is part of: | Phytochemistry, 2014, vol. 103, p. 188-195 |
| URI: | http://hdl.handle.net/2445/169248 |
| Related resource: | https://doi.org/10.1016/j.phytochem.2014.03.007 |
| ISSN: | 0031-9422 |
| Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
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