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Xueqian He,Zhenzhen Zhang,Qian Che,Tianjiao Zhu,Qian-Qun Gu,Dehai Li 대한약학회 2018 Archives of Pharmacal Research Vol.41 No.1
Seven polyketides, including four new onesnamed as varilactones A–B (1–2) and wortmannilactonesM–N (3–4), as well as three biogenetically related knownwortmannilactones E, F and H (5–7), were isolated fromthe fungus Penicillium variabile HXQ-H-1, cultivated inpotato-based medium with the histone deacetylase inhibitorsuberoylanilide 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]heptaneunit was deduced from 1H-NMR analyses on MPA estersafter chemical reduction reaction. Among them, varilactonesA and B (1 and 2), features a novel skeleton with atriene unit linking an oxabicyclo[2.2.1]heptane and anoxabicyclo[3.3.0]octane rings.