Abstract
Seven polyketides, including four new ones named as varilactones A–B (1–2) and wortmannilactones M–N (3–4), as well as three biogenetically related known wortmannilactones E, F and H (5–7), were isolated from the fungus Penicillium variabile HXQ-H-1, cultivated in potato-based medium with the histone deacetylase inhibitor suberoylanilide hydroxamic acid (SAHA). Their structures (1–7) were established by analysis of NMR and MS data, and the absolute configuration of oxabicyclo[2.2.1]heptane unit was deduced from 1H-NMR analyses on MPA esters after chemical reduction reaction. Among them, varilactones A and B (1 and 2), features a novel skeleton with a triene unit linking an oxabicyclo[2.2.1]heptane and an oxabicyclo[3.3.0]octane rings.
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26 November 2018
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26 November 2018
The author would like to include conflict of interest statement of the online published article. The correct conflict of interest statement should read as.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (21372208), the Shandong Provincial Natural Science Fund for Distinguished Young Scholars (JQ201422), AoShan Talents Program Supported by Qingdao National Laboratory for Marine Science and Technology (2015ASTP-ES09), NSFC-Shandong Joint Fund for Marine Science Research Centers (U1606403), Shandong province key research and development program (2016GSF201204), and Fundamental Research Funds for the Central Universities (201564026).
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He, X., Zhang, Z., Che, Q. et al. Varilactones and wortmannilactones produced by Penicillium variabile cultured with histone deacetylase inhibitor. Arch. Pharm. Res. 41, 57–63 (2018). https://doi.org/10.1007/s12272-017-0982-2
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DOI: https://doi.org/10.1007/s12272-017-0982-2