Fusapyrone and deoxyfusapyrone, two antifungal alpha-pyrones from Fusarium semitectum.
A strain of Fusarium semitectum Berk. & Rav. from maize stalk rot in southern Italy produced bioactive metabolites when cultured on autoclaved rice kernels at room temperature for 4 weeks. The organic extracts of fungal culture showed a strong antibiotic activity towards Geotrichum candidum in disk diffusion assays, but they were not toxic to Artemia salina larvae. Two antifungal metabolites were isolated and characterized by chemical and spectroscopic methods as two 3-substituted-4-hydroxy-6-alkyl-2-pyrones, in particular, the 3-(4-deoxy-beta-xylo-hexopyranosyl)-4-hydroxy-6-[2-hydroxy-7-hydroxymeth yl- 1,1,5,9,11-pentamethyl-3,5,8-heptadecatrienyl]-2H-pyran-2-one and its 6-[2-hydroxy-1,1,5,7,9,11-hexamethyl] analog, which were named fusapyrone and deoxyfusapyrone, respectively.
Evidente
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Dipartimento di Scienze Chimico-Agrarie, Università di Napoli Federico II, Portici, Italy.
Conti
L
L
Altomare
C
C
Bottalico
A
A
Sindona
G
G
Segre
A L
AL
Logrieco
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D000818:Animals; D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D001156:Artemia; D005285:Fermentation; D005670:Fusarium / Q000737:chemistry*; D005848:Geotrichum / Q000187:drug effects; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D011753:Pyrones / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D000935:Antifungal Agents; D011753:Pyrones; C088397:fusapyrone; C088398:deoxyfusapyrone