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Five New Guanacastane-Type Diterpenes from Cultures of the Fungus Psathyrella candolleana.

ABSTRACT: Five new guanacastane-type diterpenes, named guanacastepenes P-T (1-5), were isolated from cultures of the fungus Psathyrella candolleana. Their structures were elucidated on the basis of extensive spectroscopic methods. All of the compounds were tested for their 11β-hydroxysteroid dehydrogenase (11β-HSD1) inhibitory activity. Compound 3 exhibited inhibitory activity against both human and mouse isozymes of 11β-HSD1 with IC50 values of 6.2 and 13.9 μM, respectively.

SUBMITTER: Yin X

PROVIDER: S-EPMC4050309 | biostudies-literature |

REPOSITORIES: biostudies-literature

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