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Research Article | Open Access

Novel indole diketopiperazine stereoisomers from a marine-derived fungus Aspergillus sp.

Xinyang Li, Jinzhong Xu( ), Pinmei Wang, Wanjing Ding
Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, China
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Abstract

Four dimeric diketopiperazine stereoisomers (1–4) including two new ones (1–2) had been isolated from the culture broth of one marine-derived fungus Aspergillus sp. Z3, which was found in the gut of a marine isopod Ligia exotica. The planner structures and absolute configurations of the new compounds were determined by combination of NMR, HRESIMS, electronic circular dichroism calculation, Marfey’s method as well as single-crystal X-ray diffraction. Their cytotoxicity against the prostate cancer PC3 cell line was assayed by the MTT method.

Keywords

Indole diketopiperazinedimerstereoisomersgut fungus

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Mycology
Volume 14 Issue 1,
March 2023
Pages 1-10
DOI: 10.1080/21501203.2022.2069173

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Cite this article:
Li X, Xu J, Wang P, et al. Novel indole diketopiperazine stereoisomers from a marine-derived fungus Aspergillus sp.. Mycology, 2023, 14(1): 1-10. https://doi.org/10.1080/21501203.2022.2069173

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Received: 18 March 2022
Accepted: 18 April 2022
Published: 29 April 2022
© 2022 The Author(s).

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.