Mucronatine, a new N -methyl purine from the French mediterranean marine sponge Stryphnus mucronatus

Mucronatine, a new N -methyl purine from the French mediterranean marine sponge Stryphnus mucronatus 20-<i>N</i>-Methylpurpuramine E: New Bromotyrosine-Derived Metabolite from Okinawan Marine Sponge <i>Pseudoceratina purpurea</i> 3,7-Dimethylguanine, a New Purine from a Philippine Sponge Zyzzya fuliginosa. Purpuramines A-I, new bromotyrosine-derived metabolites from the marine sponge Psammaplysilla purpurea Sulcatin, a Novel Antiproliferative N-Methylpyridinium Alkaloid from the Ascidian Microcosmus vulgaris 1,3-Dimethylisoguanine, a New Purine from the Marine Sponge <i>Amphimedon viridis</i> Niphatynes, methoxylamine pyridines from the marine sponge, niphates SP. Two New Bromotyrosine-Derived Metabolites from the Sponge Psammaplysilla purpurea New Cytotoxic Macrolides from the Sponge <i>Fasciospongia rimosa</i> A New Manzamine Congener from Marine Sponge Amphimedon sp.