A New Diketopiperazine Derivative from the South China Sea SpongeDysideafragilis

A New Diketopiperazine Derivative from the South China Sea Sponge<i>Dysidea</i><i>fragilis</i> Three New Diketopiperazines from a Marine Sponge Dysidea fragilis Dysamide U, a new trichlorinated diketopiperazine from the sponge <i>Dysidea sp</i> New Diketopiperazines from the Sponge<i>Dysidea chlorea</i> Two novel alkaloids from the South China Sea marine sponge Dysidea sp. Dysidazirine, a cytotoxic azacyclopropene from the marine sponge Dysidea fragilis Dysibetaine: a new α,α-disubstituted α-amino acid derivative from the marine sponge Dysidea herbacea New Polyhydroxy Sterols, Dysidamides, and a Dideoxyhexose from the Sponge Dysidea herbacea New polychlorinated pyrrolidinones from the Red Sea marine sponge Lamellodysidea herbacea New Chlorinated Metabolites from the Tropical Marine Sponge Dysidea herbacea