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Natural Product Research
Formerly Natural Product Letters
Volume 35, 2021 - Issue 18
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Short Communications

A new antimicrobial indoloditerpene from a marine-sourced fungus aspergillus versicolor ZZ761

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Pages 3114-3119 | Received 23 Aug 2019, Accepted 10 Oct 2019, Published online: 05 Nov 2019
 

Abstract

A new indoloditerpene (1) and fifteen known compounds (216) were isolated from a marine-derived fungus Aspergillus versicolor ZZ761. Structure of the new compound was elucidated as (3 R,9S,12R,13S,17S,18S)-2-carbonyl-3-hydroxylemeniveol based on its HRESIMS data, NMR spectroscopic analyses, the Mosher′s method, and ECD calculation. This new indoloditerpene (1) showed antimicrobial activities with MIC values of 20.6 μM against Escherichia coli and 22.8 μM against Candida albicans. Diorcinol (2) and versicolorin B (6) had activities in inhibiting the proliferation of human glioma U87MG and U251 cells with IC50 values of 4.4 and 6.2 μM and 11.3 and 30.5 μM, respectively.

Graphical Abstract

Supplementary material

The experimental section, HRESIMS, NMR, IR, and UV spectra of 1 as well as 13C and 1H NMR data of compounds 116 are available in the Supplementary Material.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was supported by the National Key R&D Program of China (No. 2018YFC0311002) and the National Natural Science Foundation of China (No. 81773587).

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