Colorado J, Muñoz D, Marquez D, Marquez ME, Lopez J, Thomas OP, Martinez A. Ulososides and
urabosides--triterpenoid saponins from the Caribbean marine sponge Ectyoplasia ferox.
Molecules 2013;
18:2598-610. [PMID:
23446917 PMCID:
PMC6270507 DOI:
10.3390/molecules18032598]
[Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 02/07/2013] [Accepted: 02/18/2013] [Indexed: 11/22/2022] Open
Abstract
Three new triterpene glycosides, named ulososide F (1), urabosides A (2) and B (3), together with the previously reported ulososide A (4), were isolated from the Caribbean marine sponge Ectyoplasia ferox. Their structures were elucidated using extensive interpretation of 1D and 2D-NMR data, as well as HRESIMS. The aglycon of all compounds is a rare 30-norlonastane and the sugar residues were identified after acid hydrolysis and GC analyses. Cytotoxicities of the isolated compounds were evaluated against Jurkat and CHO cell lines by a MTT in vitro assay as well as a hemolysis assay. Unexpectedly, all these saponin derivatives showed very low activity in our bioassays.
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