A new dihydroxysterol from the marine phytoplankton Diacronema sp.
Diacronema sp. was cultured and its sterols were separated by column chromatography on silica gel. The new sterol 24-ethyl-4alpha-methyl-cholestane-3,20-diol (1) was characterised by NMR and MS spectrometry, as well as (22E)-24-ethyl-4alpha-methyl-5alpha-cholest-22-en-3beta-ol (2) and beta-sitosterol, the major components of the sterol fractions. Neither the biosynthetic origin of the new dihydroxysterol nor its role in the biochemistry of Diacronema is known.
Rauter
Amélia P
AP
Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Ed. C8, 5 piso, 1749-016 Lisboa, Portugal. aprauter@fc.ul.pt
Filipe
Manuela M
MM
Prata
Carla
C
Noronha
João P
JP
Sampayo
Maria A M
MA
Justino
Jorge
J
Bermejo
Jaime
J
D000818:Animals; D044523:Chrysophyta; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008517:Phytotherapy; D013261:Sterols / Q000737:chemistry*
D013261:Sterols