232 research outputs found

    L'oxydation par le dioxyde de sélénium de la coriacéolide, triterpène de stryphnodendron coriaceum

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    Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe

    III International IUPAC Symposium on marine natural products: a survey

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    info:eu-repo/semantics/publishe

    Les médicaments de la mer

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    info:eu-repo/semantics/publishe

    Chemical Defense in ants

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    info:eu-repo/semantics/publishe

    Defensive alkaloids from ants

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    SCOPUS: ar.jinfo:eu-repo/semantics/publishe

    Chemical and biological aspects of sponge secondary metabolites

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    SCOPUS: cp.jinfo:eu-repo/semantics/publishe

    Chemical defence in sponges

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    Many sponges are known to synthesize secondary metabolites showing a great diversity of structures and of biological activities. Further-more, the same sponge species, although sessile, exposed to predation and apparently devoid of mechanical or physical defence, suffer negligible predation and are seldom invaded by epizoic organisms. By putting these two observations together, a cause-effect relationship has been repeatedly suggested. Our purpose is to review the existing data and the arguments having led to this proposal. Recent structural studies and biological tests performed in our laboratory will serve to illustrate the complexity of the chemically mediated interactions of sponges with their environment. © 1986 IUPACSCOPUS: ar.jinfo:eu-repo/semantics/publishe
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