| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199194 |
| ISSN: | 0100-4042 |
| Autores: | Barbosa, Luiz Claudio de Almeida1 Maltha, Celia Regina Alvares Borges, Eduardo Euclides Lima |
| Instituciones: | 1Universidade Federal de Vicosa, Departamento de Quimica, Vicosa, Minas Gerais. Brasil 2Universidade Federal de Vicosa, Departamento de Engenharia Florestal, Vicosa, Minas Gerais. Brasil |
| Año: | 2002 |
| Periodo: | Mar-Abr |
| Volumen: | 25 |
| Número: | 2 |
| Paginación: | 203-208 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, descriptivo |
| Resumen en inglés | The alkene 2,4-dimethyl-8-oxabicyclo[3.2.1]-oct-6-en-3-one (3) was converted to 1,3,10-trimethyl-8-oxabicyclo[5.3.0]-dec-3-ene-2,9-dione (7) and 1,3-dimethyl-8-oxabicyclo[5.3.0]-dec-3-ene-2,9-dione (8) with a 55% overall yield in both cases. Lactones (7) and (8) were converted in two steps to 1,3,4-trimethyl-13-methylene-6-oxatricyclo[8.3.0.0 3,7]-trideca-2,5,12-trione (12) (63%) and 1,3-dimethyl-13-methylene-6-oxatricycle[8.3.0.0 3,7]-trideca-2,5,12-trione (13) (45% from 8). The effect of lactones (7), (8), (12), (13) and the intermediates (5) and (6), at the concentration of 250 mg mL-1, on the growth of Cucumis sativus L. and Sorghum bicolor L. was evaluated. The best results were observed for lactone (13) that caused 100% inhibition on the root growth of C. sativus and lactone (12) that inhibited 90% of the root growth for S. bicolor |
| Disciplinas: | Agrociencias, Química |
| Palabras clave: | Fitopatología, Fitoquímica, Química analítica, Lactonas, Herbicidas, Fitotoxicidad, Cucumis sativus, Sorghum bicolor, Raíces, Crecimiento de raíces, Asteraceae |
| Keyword: | Agricultural sciences, Chemistry, Phytopathology, Analytical chemistry, Phytochemistry, Lactones, Herbicides, Phytotoxicity, Cucumis sativus, Sorghum bicolor, Roots growth, Asteraceae, Roots |
| Texto completo: | Texto completo (Ver HTML) |
