sesquiterpenos de sementes de guarea guidonia (meliaceae)
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ID: 179622
2012
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Abstract
Two new sesquiterpenes 6α-ethoxyeudesm-4(15)-en-1β-ol (1) and (7R*)-5-epi-opposit-4(15)-ene-1β,7-diol (7) were isolated from the seeds of a specimen of Guarea guidonia (Meliaceae). Five other known sesquiterpenes, eudesm-4(15)-ene-1β,6α-diol (2), 5-epi-eudesm-4(15)-ene-1β,6β-diol (3), eudesm-4(15)-ene-1β,5α-diol (4), eudesm-4(15),7-dien-1β-ol (5) and (7R*)-opposit-4(15)-ene-1β,7-diol (6), were also isolated in this work. Their structures were determined on the basis of spectral data (MS, IR, and NMR-1D and 2D) and subsequent comparisons with the literature. The substances 3, 4 and 6 are reported for the first time in Meliaceae and 5 for the first time in the genus Guarea.
| Reference Key |
soares2012qumicasesquiterpenos
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| Authors | ;Luzinátia Ramos Soares;Alene Cortes de Queiroz e Silva;Talita Vilalva Freire;Fernanda Rodrigues Garcez;Walmir Silva Garcez |
| Journal | greece and rome |
| Year | 2012 |
| DOI |
10.1590/S0100-40422012000200017
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