Structures and absolute stereochemistry of isocyanide and isothiocyanate amphilectenes from the Caribbean sponge Cribochalina sp. (Articolo in rivista)

Type
Label
  • Structures and absolute stereochemistry of isocyanide and isothiocyanate amphilectenes from the Caribbean sponge Cribochalina sp. (Articolo in rivista) (literal)
Anno
  • 1999-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S0040-4020(99)00737-1 (literal)
Alternative label
  • Maria Letizia Ciavatta, Angelo Fontana, Raffaella Puliti, Gennaro Scognamiglio, Guido Cimino (1999)
    Structures and absolute stereochemistry of isocyanide and isothiocyanate amphilectenes from the Caribbean sponge Cribochalina sp.
    in Tetrahedron (Oxf., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Maria Letizia Ciavatta, Angelo Fontana, Raffaella Puliti, Gennaro Scognamiglio, Guido Cimino (literal)
Pagina inizio
  • 12629 (literal)
Pagina fine
  • 12636 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 55 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per la Chimica di Molecole di Interesse Biologico, Via Toiano 6, 80072 Arco Felice, Napoli Italy (literal)
Titolo
  • Structures and absolute stereochemistry of isocyanide and isothiocyanate amphilectenes from the Caribbean sponge Cribochalina sp. (literal)
Abstract
  • Three new diterpenes (5-7), based on amphilectene skeleton, were isolated from the Caribbean sponge Cribochalina sp.. AII contain isocyanide and isothiocyanate functions and are epimers at C-7 of previously characterized diterpenoids. The structures of 5-7 were established by spectroscopic techniques. The sponge extract also showed the presence of the known metabolite 4, together with the new bicyclic diterpene 8, potential precursor of the co-occurring amphilectenes. For the first time, the absolute configuration of the amphilectene skeleton has been assigned by applying the modified Mosher's method on a derivative of the main compound 4. The isocyanide 4 reduced the proliferation of lymphocytes T and B under various stimuli. (literal)
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