title: Isolation and structural elucidation of 3,6-dioxo-hexahydro-pyrrolo (1,2-a)-pyrazine from the echinoderm Luidia clathrata.
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000302:isolation & purification*; D002850:Chromatography, Gel; D008961:Models, Structural; D008968:Molecular Conformation; D010879:Piperazines / Q000302:isolation & purification*; D011758:Pyrroles / Q000302:isolation & purification; D013215:Starfish / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D000970:Antineoplastic Agents; D010879:Piperazines; D011758:Pyrroles