Abstract：
:A chemical study of the ethyl acetate (EtOAc) extract from the deep-sea-derived fungus Penicilliumthomii YPGA3 led to the isolation of a new austalide meroterpenoid (1) and seven known analogues (28), two new labdane-type diterpenoids (9 and 10) and a known derivative (11). The structures of new compounds 1, 9, and 10 were determined by comprehensive analyses via nuclear magnetic resonance (NMR) and mass spectroscopy (MS) data. The absolute configurations of 1, 9, and 10 were determined by comparisons of experimental electronic circular dichroism (ECD) with the calculated ECD spectra. Compound 1 represented the third example of austalides bearing a hydroxyl group at C-5 instead of the conserved methoxy in other known analogues. To our knowledge, diterpenoids belonging to the labdane-type were discovered from species of Penicillium for the first time. Compound 1 showed cytotoxicity toward MDA-MB-468 cells with an IC50 value of 38.9 M. Compounds 2 and 11 exhibited inhibition against α-glucosidase with IC50 values of 910 and 525 M, respectively, being more active than the positive control acarbose (1.33 mM).
journal_name
Mar Drugsjournal_title
Marine drugsauthors
Cheng Z,Liu W,Fan R,Han S,Li Y,Cui X,Zhang J,Wu Y,Lv X,Zhang Y,Luo Z,Alias SA,Xu W,Li Qdoi
10.3390/md18030164subject
Has Abstractpub_date
2020-03-16 00:00:00issue
3issn
1660-3397pii
md18030164journal_volume
18pub_type
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