Termitomyces striatus (Beeli) Heim forma annulatus. Identification et étude préliminaire de la composition chimique : Recherche des polyols, des sucres, des alcaloïdes, des acides phénols et des toxines

A la BU Pharmacie Montpellier version papierInternational audienc

Investigation of polyols, amino acids and phenolic acids in a taxonomic study of Cortinarius, Subgenus Leprocybe, Section Orellani

International audienceSeven Cortinarius species in sect. Orellani were divided into 6 groups using microscopic features of their basidiospores. Two of these groups contained all specimens of C. speciosissimus and C. orellanoides, with each group having specimens of both species. Chemical methods employing thin-layer chromatography were used to detect polyols, amino acids and phenolic acids among specimens in these groups. The importance of these compounds as well as microscopic characteristics of the basidiospores are discussed in relation to the classification of species. Preliminary data does not confirm synonymy of C. speciosissimus and C. orellanoides, but identical chromatographic fingerprints were detected for C. orellanoides and C. orellanus

Bioactive Prenylhydroquinone Sulfates and a Novel C31 Furanoterpene Alcohol Sulfate from the Marine Sponge, Ircinia Sp.

Prenylhydroquinone sulfates have been isolated from a marine sponge, Ircinia sp., collected off New Caledonia. These compds. bind to the neuropeptide Y receptor, inhibit the tyrosine protein kinase and HIV-integrase enzymes, and co-occur with a mixt. of sulfated prenylated chromanols and chromenols, prenylhydroquinones, and the corresponding quinones and chromenols. A hydroxylated heptaprenylhydroquinone, which proved to be active against tyrosine protein kinase, was also isolated, as well as a novel C31 furanoterpene alc. sulfate, named ircinol sulfate