New Chlorinated 2,5-Diketopiperazines from Marine-Derived Bacteria Isolated from Sediments of the Eastern Mediterranean Sea

被引：23

作者：

Harizani, Maria ^{[1
]}

Katsini, Eleni ^{[1
]}

Georgantea, Panagiota ^{[1
]}

Roussis, Vassilios ^{[1
]}

Ioannou, Efstathia ^{[1
]}

机构：

[1] Natl & Kapodistrian Univ Athens, Sch Hlth Sci, Dept Pharm, Sect Pharmacognosy & Chem Nat Prod, Athens 15771, Greece

来源：

MOLECULES | 2020年 / 25卷 / 07期

关键词：

2,5-diketopiperazine; marine bacteria; sediment; natural products; structure elucidation; antifungal activity evaluation; EFFICIENT SYNTHESIS; CYCLIC DIPEPTIDES; DIKETOPIPERAZINES; METABOLITES; SPONGE; THURINGIENSIS; BIOSYNTHESIS; CONSTITUENTS; INHIBITOR; DISCOVERY;

D O I：

10.3390/molecules25071509

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

From the organic extracts of five bacterial strains isolated from marine sediments collected in the East Mediterranean Sea, three new (15, 16, 31) and twenty-nine previously reported (1-14, 17-30, 32) metabolites bearing the 2,5-diketopiperazine skeleton were isolated. The structures of the chlorinated compounds 15, 16, and 31 were elucidated by extensive analysis of their spectroscopic data (NMR, MS, UV, IR). Compounds 15 and 16 were evaluated for their antifungal activity against Candida albicans and Aspergillus niger but were proven inactive. The relevant literature is supplemented with complete NMR assignments and revisions for the 29 previously reported compounds.

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页数：17

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