title: New polyoxygenated steroids from the South China Sea gorgonian Echinogorgia aurantiaca.
abstract: Three new polyoxygenated steroids, named 3beta,7alpha,9alpha-trihydroxy-cholestan-6-one (1), 3beta,5alpha,6beta-trihydroxycholestan-1-one (2) and cholestane-3beta,5alpha,6beta,11beta-tetrol (3), along with four known steroids (4-7) were isolated from the South China Sea gorgonian Echinogorgia aurantiaca. The structures of 1-3 were established by extensive spectroscopic analysis, including 1D and 2D NMR data.
authors.affiliation: Guangdong Key Laboratory of Marine Material Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, PR China.
authors.forename: Yunqi
authors.initials: Y
authors.lastname: Qiu
authors.forename: Shuhua
authors.initials: S
authors.lastname: Qi
authors.forename: Si
authors.initials: S
authors.lastname: Zhang
authors.forename: Jin
authors.initials: J
authors.lastname: Yang
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Xiao
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D013256:Steroids