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  • Calabro, K., et al. (author)
  • Poecillastrosides, Steroidal Saponins from the Mediterranean Deep-Sea Sponge Poecillastra compressa (Bowerbank, 1866)
  • 2017
  • In: Marine Drugs. - : MDPI AG. - 1660-3397. ; 15:7
  • Journal article (peer-reviewed)abstract
    • The first chemical investigation of the Mediterranean deep-sea sponge Poecillastra compressa (Bowerbank, 1866) led to the identification of seven new steroidal saponins named poecillastrosides A-G (1-7). All saponins feature an oxidized methyl at C-18 into a primary alcohol or a carboxylic acid. While poecillastrosides A-D (1-4) all contain an exo double bond at C-24 of the side-chain and two osidic residues connected at O-2', poecillastrosides E-G (5-7) are characterized by a cyclopropane on the side-chain and a connection at O-3' between both sugar units. The chemical structures were elucidated through extensive spectroscopic analysis (High-Resolution Mass Spectrometry (HRESIMS), 1D and 2D NMR) and the absolute configurations of the sugar residues were assigned after acidic hydrolysis and cysteine derivatization followed by LC-HRMS analyses. Poecillastrosides D and E, bearing a carboxylic acid at C-18, were shown to exhibit antifungal activity against Aspergillus fumigatus.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Diaz, C. (1)
Soussi, Bassam, 1957 (1)
Rodrigues, D. (1)
Perez, T (1)
Calabro, K. (1)
Kalahroodi, E. L. (1)
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de la Cruz, M. (1)
Cautain, B. (1)
Laville, R. (1)
Reyes, F. (1)
Thomas, O. P. (1)
Talan Can, Steroids ... (1)
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University
University of Gothenburg (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2017 (1)

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