Abstract
Culture filtrates of Fusarium monoliforme contain 16α-hydroxy-(−)-kauran-19-al ( 8) and 16α-hydroxy-(−)-kauran-19-oic acid ( 9)-two diterpenoids related to the intermediates in the biosynthesis of gibberellins. The previously described 7,13-dihydroxykanrenolide ( 10) is an endogenic metabolite of the fungus. From the mycelium extracts three C 28-sterols were isolated including the hitherto unknown 5α- 8α-epidioxyergosta-6,9(11), 22-trien-3β-ol-12-one ( 19). The content of the oxidized kaurene derivatives in the mycelium was much lower than in the culture filtrate. Among the fatty acids of the mycelium a new compound, 4-oxododecanedioic acid ( 21) was isolated.
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