title: Antioxidant alkaloid from the South China Sea marine sponge Iotrochota sp.
abstract: Purpurone was isolated from the sponge Iotrochota sp. by bioactivity-guided fractionation. The compound showed antioxidant activity using the DPPH assay. The structure was established on the basis of NMR data and comparison with data reported.
authors.affiliation: Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510-301, China. yonghongliu@scsio.ac.cn
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Liu
authors.forename: Hong
authors.initials: H
authors.lastname: Ji
authors.forename: Junde
authors.initials: J
authors.lastname: Dong
authors.forename: Si
authors.initials: S
authors.lastname: Zhang
authors.forename: Kyung Jin
authors.initials: KJ
authors.lastname: Lee
authors.forename: Susan
authors.initials: S
authors.lastname: Matthew
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D000818:Animals; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification*; D001713:Biphenyl Compounds; D002681:China; D016166:Free Radical Scavengers / Q000737:chemistry; D006834:Hydrazines; D009682:Magnetic Resonance Spectroscopy; D009792:Oceans and Seas; D010851:Picrates; D011161:Porifera / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D000975:Antioxidants; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D006834:Hydrazines; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl