Discovery and semisynthesis of coniochaetones N-P: antimicrobial and antioxidant heterocyclics from an Antarctic-derived fungus Penicillium sp. S2014503.
Penicillium sp. S2014503 is a fungus found in the Antarctic. Herein, we report a new heterocyclic (1) and two semi-synthesized ones (2-3) derived from citrinin (4), the main product of S2014503. Absolute configurations of 1 and 4 were deduced by single crystal X-ray diffraction analyses. Compound 2 was analyzed to be a...