Caryophyllenes from a fungal culture of Chrysosporium pilosum.
2009
Four new caryophyllene derivatives, Sch 725432 (1), Sch 601253 (2), Sch 601254 (3), and Sch 725434 (4), were isolated from the fungal fermentation broth of Chrysosporium pilosum by reversed-phase HPLC purification. The structure elucidation of trioxygenated caryophyllenes 1−4 was accomplished on the basis of spectroscopic data interpretation. Sch 725434 (4) possesses a dihydrofuran-3-one ring, forming a tricyclic ring skeleton, which represents an unprecedented ring skeleton for the caryophyllene-type of sesquiterpenes. Compounds 1−4 were evaluated for their antifungal activity.
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