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  • Title: New secondary metabolites with immunosuppressive and BChE inhibitory activities from an endophytic fungus Daldinia sp. TJ403-LS1.
    Author: Lin S, Yan S, Liu Y, Zhang X, Cao F, He Y, Li F, Liu J, Wang J, Hu Z, Zhang Y.
    Journal: Bioorg Chem; 2021 Sep; 114():105091. PubMed ID: 34153809.
    Abstract:
    Five new acetylenic phenol derivatives (1-4 and 7), one new benzofuran derivative (8), one new naphthol derivative (9), and two known analogues (5 and 6), were isolated and identified from an endophytic fungus Daldinia sp. TJ403-LS1 that was isolated from the medicinally valuable plant Anoectochilus roxburghii. Their structures were elucidated by means of extensive spectroscopic analyses and electronic circular dichroism (ECD) calculations. In addition, compound 1 exhibited remarkable immunosuppressive activity against LPS and anti-CD3/anti-CD28 mAbs activated murine splenocytes proliferation with the same IC50 values of 0.06 μM and BChE inhibitory activity with an IC50 value of 6.93 ± 0.71 μM, and compounds 6, 8 and 9 showed excellent BChE inhibitory activity with IC50 values of 16.00 ± 0.30, 23.33 ± 0.55, and 15.53 ± 0.39 μM, respectively (positive drug neostigmine, IC50 = 49.60 ± 6.10 μM), highlighting the promising potentials to be designed and developed as immunosuppressive and BChE inhibitory agents.
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