New depsidones and isoindolinones from the mangrove endophytic fungus Meyerozyma guilliermondii (HZ-Y<inf>2</inf>) isolated from the South China Sea

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Abstract

Three new depsidones, botryorhodines E-G (1-3), and two new isoindolinones, meyeroguillines A and B (7 and 9), along with five known compounds were isolated from an endophytic fungus Meyerozyma guilliermondii, derived from the mangrove plant Kandelia obovata. Their structures were elucidated by 1D and 2D NMR spectroscopy and high resolution mass spectrometry (HREIMS). Compounds 1-6 exhibited strong α-glucosidase inhibitory activity with IC<inf>50</inf> values ranging from 2.1 to 13.3 μM. Moreover, kinetic studies of compounds 2 and 6 showed that both of them were noncompetitive inhibitors of α-glucosidase.

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Chen, S., Liu, Z., Liu, Y., Lu, Y., He, L., & She, Z. (2015). New depsidones and isoindolinones from the mangrove endophytic fungus Meyerozyma guilliermondii (HZ-Y<inf>2</inf>) isolated from the South China Sea. Beilstein Journal of Organic Chemistry, 11, 1187–1193. https://doi.org/10.3762/bjoc.11.133

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