Bioactive azaphilones from the fungus Penicillium multicolor CM01
2016
Hemtasin, Chulida | Kanokmedhakul, Somdej | Moosophon, Panawan | Soytong, Kasem | Kanokmedhakul, Kwanjai
Two new azaphilones, dechloroisochromophilone II (1) and epi-isochromophilone III (2), a new natural product, 5-hydroxy-4-methoxy-5,6-dihydro-2H-pyran-2-one (3), together with eleven known compounds, 4–14 were isolated from the fungus, Penicillium multicolor CM01. Their structures were elucidated by spectroscopic methods. Compounds 2, 8, 10 and 11 exhibited antimalarial activity against Plasmodium falciparum (IC50 2.1–7.8μg/mL), while compounds 9 and 10 showed antimycobacterial activity against Mycobacterium tuberculosis (MIC 6.2 and 50.0μg/mL, respectively). Compounds 2, 4, and 7–11 showed cytotoxicity against three cancer cell lines, KB, MCF-7 and NCI-H187 (IC50 2.2–35.2μg/mL). In addition, compounds 1, 5–8 and 11 showed a minimum inhibition requirement to acetylcholinesterase (AChE) assay in the range of 0.03–0.25nM.
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