Susumu Ikegami

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A new nitrogen-containing bicyclic spirosesquiterpene designated exiguamide which inhibited cell fate specification during sea urchin embryogenesis has been isolated from the marine sponge Geodia(More)
Though O-linked β-N-acetylglucosaminylation (O-GlcNAcylation) of nucleocytoplasmic proteins has been found in many multicellular organisms, its presence or absence in Echinodermata is unknown. Here(More)
The marine sponge Monotria japonica contains cytolytic constituents, which have been fractionated to a new alpha,beta,gamma,delta-unsaturated carboxylic acid designated monotriajaponide A (1) and(More)