title: Further Highly Hydroxylated Steroids from the Vietnamese Starfish Archaster typicus.
abstract: Eight highly hydroxylated steroids (1-8), including three new compounds as sodium salts of (24S)-5α-cholestane-3β,4β,5,6α,7β,8,14,15α,24-nonaol 6-sulfate (1), (24E)-5α-cholest-24-ene-26-yde-3β,6α,8,14,15α-pentaol 15-sulfate (2), and 5α-cholest-3β,6α,8,14,15α,24,25,26-octaol 15-sulfate (3), were isolated and elucidated from the methanol extract of the Vietnamese starfish Archaster typicus. The structure elucidation was done by spectroscopic methods including one and two dimensional (1D-, 2D-)NMR and Fourier transform ion cyclotron resonance (FT-ICR)-MS. The isolated compounds can be used as chemical markers for taxonomic identification of the starfish A. typicus.
authors.affiliation: Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST).
authors.forename: Tran Thi Hong
authors.initials: TT
authors.lastname: Hanh
authors.forename: Le Thi
authors.initials: LT
authors.lastname: Vien
authors.forename: Le Ba
authors.initials: LB
authors.lastname: Vinh
authors.forename: Nguyen Van
authors.initials: NV
authors.lastname: Thanh
authors.forename: Nguyen Xuan
authors.initials: NX
authors.lastname: Cuong
authors.forename: Nguyen Hoai
authors.initials: NH
authors.lastname: Nam
authors.forename: Do Cong
authors.initials: DC
authors.lastname: Thung
authors.forename: Phan Van
authors.initials: PV
authors.lastname: Kiem
authors.forename: Chau Van
authors.initials: CV
authors.lastname: Minh
mesh_terms: D000818:Animals; D005583:Fourier Analysis; D006900:Hydroxylation; D008968:Molecular Conformation; D021241:Spectrometry, Mass, Electrospray Ionization; D013215:Starfish / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification; D014744:Vietnam
chemical_list: D013256:Steroids