| Journal: | Journal of the Brazilian Chemical Society |
| Database: | PERIÓDICA |
| System number: | 000311865 |
| ISSN: | 0103-5053 |
| Authors: | Santos, Claudio C. dos1 Lima, Mary Anne S Braz-Filho, Raimundo2 Silveira, Edilberto R |
| Institutions: | 1Universidade Federal do Ceara, Departamento de Quimica Organica e Inorganica, Fortaleza, Ceara. Brasil 2Universidade Estadual do Norte Fluminense, Setor de Quimica de Produtos Naturais, Campos dos Goytacazes, Rio de Janeiro. Brasil |
| Year: | 2006 |
| Season: | Dic |
| Volumen: | 17 |
| Number: | 7 |
| Pages: | 1304-1308 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | Two new diterpenes ent-rosan-1-one-5alpha,15xi,16-triol (1) and ent-11alpha-acetoxy-devadarane-15xi,16-diol (2) were isolated from roots of Erythroxylum barbatum, in addition to the known diterpenes ent-devadarane-15xi,16-diol (erythroxydiol X, 3) and procesterol. Investigation of the trunk heartwood furnished the ent-devadarane-11alpha,15xi,16-triol (erythroxytriol Q, 4), ent-devadarane-7beta,15xi,16-triol (hydroxydevadarool, 5), beta-sitosterol and its glucoside. Structural characterization, including the relative stereochemistry of all compounds, was established on the basis of spectroscopic methods, particularly 1D and 2D NMR, and comparison with data from literature |
| Portuguese abstract | Das raízes de Erythroxylum barbatum foram isolados dois novos diterpenos ent- rosan-1-ona-5alfa,15ksi,16-triol (1) e ent-11alfa-acetoxi-devadarano-15ksi,16-diol (2), além do ent-devadarano-15ksi,16-diol (erythroxidiol X, 3) e do procesterol. Investigação do lenho do caule forneceu o ent-devadarano-11alfa,15ksi,16-triol (erythroxitriol Q, 4), o ent-devadarano-7beta,15ksi,16-triol (hidroxidevadarool, 5), o beta-sitosterol e seu glicosídeo. A caracterização estrutural, inclusive a estereoquímica relativa dos compostos, foi estabelecida com base em métodos espectroscópicos, particularmente RMN uni e bidimensional, e comparação com dados da literatura |
| Disciplines: | Química, Biología |
| Keyword: | Fitoquímica, Angiospermas, Diterpenos, Erythroxylum barbatum, Erythroxylaceae |
| Keyword: | Chemistry, Biology, Phytochemistry, Angiosperms, Diterpenes, Erythroxylum barbatum, Erythroxylaceae |
| Full text: | Texto completo (Ver HTML) |
