中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(3R,4R,5R)-5-[(1R)-1,2-二羟基乙基]-3,4-二羟基四氢呋喃-2-酮 | D-glucono-1,4-lactone | 1198-69-2 | C6H10O6 | 178.142 |
葡萄糖酸内酯 | D-Glucono-1,5-lactone | 90-80-2 | C6H10O6 | 178.142 |
The soil fungus Talaromycesflavus (Klöcker) Stolk and Samson is an effective biological control for Verticillium wilt of eggplant (Solanummelongena L.), a disease caused by the fungus Verticilliumdahliae Kleb. The organic soluble metabolites produced when the fungus is grown in liquid still culture include D-glucono-1,4-lactone (1), 5-hydroxymethylfurfural (5), the previously unreported tetraketides, 4,6-dihydroxy-5-methylphthalide (3) and methyl 4-carboxy-5-hydroxyphthalaldehydate (8), a hexaketide, 7-hydroxy-2,5-dimethylchromone (6), and a metabolite believed to be 3-hydroxymethyl-6,8-dimethoxycoumarin (10). A number of higher order polyketides have been isolated including altenusin (11), dehydroaltenusin (12), and the previously unreported desmethyldehydroaltenusin (14). A structurally and biosynthetically interesting spirocyclic metabolite, which we have named talaroflavone (16), as well as a related compound, deoxytalaroflavone (18), have also been obtained. Keywords: Talaromycesflavus, fungal metabolites, talaroflavone, 4,6-dihydroxy-5-methylphthalide.