Steroids glycosylated with both D- and L-arabinoses from the South China Sea gorgonian Dichotella gemmacea.
J Nat Prod
; 76(4): 764-8, 2013 Apr 26.
Article
em En
| MEDLINE
| ID: mdl-23477504
ABSTRACT
Three new 19-hydroxy steroidal glycosides, namely, junceellosides E-G (2-4), were isolated together with the known analogue junceelloside C (1) from the South China Sea gorgonian Dichotella gemmacea. The structures of these compounds were elucidated by a combination of detailed spectroscopic analyses, chemical methods, and comparison with reported data. These glycosides are found to have sugar moieties of both ß-l- and ß-d-arabinopyranoses by HPLC analysis of their thiocarbamoyl-thiazolidine derivatives and those of authentic d- and l-arabinoses, leading to the structure revision of junceelloside C (1). This is the first report of steroidal glycosides from the gorgonian D. gemmacea and the first report of glycosides with ß-l-arabinopyranose from marine sources.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Arabinose
/
Esteroides
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Antozoários
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Glicosídeos
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Antineoplásicos
Limite:
Animals
Idioma:
En
Revista:
J Nat Prod
Ano de publicação:
2013
Tipo de documento:
Article