Seasonal fluctuations of the sponge-dwelling gnathiid isopod Elaphognathia aff. cornigera
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چکیده
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Antichlamydial sterol from the Red Sea sponge Callyspongia aff. implexa.
Marine sponges are rich sources of natural products exhibiting diverse biological activities. Bioactivity-guided fractionation of the Red Sea sponge Callyspongia aff. implexa led to the isolation of two new compounds, 26,27-bisnorcholest-5,16-dien-23-yn-3β,7α-diol, gelliusterol E (1) and C27-polyacetylene, callimplexen A (2), in addition to the known compound β-sitosterol (3). The structures of...
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Reexamination of the marine sponge Suberea aff. praetensa, (Row) from the Gulf of Thailand furnished in addition to bromotyrosine derivatives found previously 5-bromo- and 5-chlorocavernicolin, cavernicolins 1 and 2, two other brominated tyrosine metabolites, a known bisoxazolidone and a new unusual rearranged tyrosine metabolite subereatensin. Several of the metabolites exhibited significant i...
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ژورنال
عنوان ژورنال: Crustacean Research
سال: 2008
ISSN: 0287-3478,2189-5317
DOI: 10.18353/crustacea.37.0_14