Ophirasterol, a new C31 sterol from the marine sponge Topsentia ophiraphidites.
Steroids
; 69(2): 93-100, 2004 Feb.
Article
em En
| MEDLINE
| ID: mdl-15013687
Analysis of the sterol fraction obtained from the Colombian Caribbean sponge Topsentia ophiraphidites revealed that this sponge is a rich source of C30 and C31 sterols. Among them, a new C31 sterol, named ophirasterol, was isolated, and its structure was established as (22E,24R)-24-(1-buten-2-yl)cholesta-5,22-dien-3beta-ol (1) by spectral means and comparison with synthetic C-24 epimers with known configuration. Other isolated C30 and C31 sterols were the known 24-ethyl-24-methyl-22-dehydrocholesterol (2), 24-isopropyl-22-dehydrocholesterol (3), 24-isopropylcholesterol (4), 24-ethyl-24-methylcholesterol (5), 24-isopropenyl-25-methyl-22-dehydrocholesterol (6) and 24-isopropenyl-25-methylcholesterol (7), and 24-isopropenyl-22-dehydrocholesterol (8).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poríferos
/
Esteróis
Limite:
Animals
Idioma:
En
Revista:
Steroids
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Colômbia
País de publicação:
Estados Unidos