Polyketides from the fungus Pochonia chlamydosporia and their bioactivities.

Phytochemistry

School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central Minzu University, Wuhan, 430074, PR China; International Cooperation Base for Active Substances in Traditional Chinese Medicine in Hubei Province, Wuhan, 430074, PR China. Electronic address:

Published: September 2023

Three previously undescribed griseofulvin derivatives, namely pochonichlamydins A-C, one small polyketide, namely pochonichlamydin D, together with nine known compounds, have been isolated from cultures of the fungus Pochonia chlamydosporia. Their structures with absolute configurations were elucidated on the basis of extensive spectrometric methods and single-crystal X-ray diffraction. Dechlorogriseofulvin and griseofulvin exhibited inhibitory activities against Candida albicans at the concentration of 100 μM, with inhibition rates of 69.1% and 56.3%, respectively. Meanwhile, pochonichlamydin C showed mild cytotoxicity against the human cancer MCF-7 cell line with an IC value of 33.1 μM.

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http://dx.doi.org/10.1016/j.phytochem.2023.113747DOI Listing

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