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New depsidones and isoindolinones from the mangrove endophytic fungus Meyerozyma guilliermondii (HZ-Y2) isolated from the South China Sea.


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 ?-glucosidase inhibitory activity with IC50 values ranging from 2.1 to 13.3 ?M. Moreover, kinetic studies of compounds 2 and 6 showed that both of them were noncompetitive inhibitors of ?-glucosidase.

SUBMITTER: Chen S 

PROVIDER: S-EPMC4578337 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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New depsidones and isoindolinones from the mangrove endophytic fungus Meyerozyma guilliermondii (HZ-Y2) isolated from the South China Sea.

Chen Senhua S   Liu Zhaoming Z   Liu Yayue Y   Lu Yongjun Y   He Lei L   She Zhigang Z  

Beilstein journal of organic chemistry 20150716


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 IC50 values ranging from 2.1 to 13.3 μM. Moreover, kinetic  ...[more]

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