Influence de la structure de composés phénoliques sur l'inhibition du Phytophthora parasitica et d'enzymes participant aux processus parasitaires
作者： A. RAVISÉ , B. S. Kirkiacharian
DOI: 10.1111/J.1439-0434.1976.TB01705.X
关键词:
摘要: Le Professeur TAMM et ses collaborateurs ont decele chez des Liliacees du genre Eucomis L. composes phenoliques possedant une structure particuli8re. Celle-ci est caracterisee par la pr.esence d'un atome de carbone situe hors cycles benzeniques, elle designee sous le vocable general d'homo-isoflavone (BOHLER 1967, SIDWELL 1970, FINCK 1972, 1972). Ces substances sont presentes principalement dans les cires recouvrant l'epiderme ecailles bulbes ainsi que tissus trois especes d'Eucomis E. bicolor Bak., automnalis Graeb., punctata l'Herit. a. . ,. Ca biosynthese ces a ete recemment etudiee (DEWICK 1975). Des produits semblables extraits d'une autre Liliacee, Scilla scilloides Druce (KOUNO al. 1973) Gutifferale, Gnrcinia dulcis (Roxb.) Kurz. (WAJID 1976). Ayant etabli, au cours d'etudes precedentes, isoflavonoides benzyle-3 coumarine divers degres toxiques pour Phytophthora parasitica inhibent differentiellement l'activite d'enzymes lytiques (KIRKIACHARIAN RAVISE 1976, KIRKIACHARIAN 1976a 1976b), nous avons etudie propriktes biologiques d'homo-isoflavanones stnicturellement proches substances. Les homo-isoflavanones, ou benzylidkne-3 chromanone-4 1975) constitutives plantes elles \
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