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Glycolipids from sponges, II. Glycosyl ceramide composition of the marine spongeAgelas longissima

✍ Scribed by Cafieri, Francesco ;Fattorusso, Ernesto ;Mangoni, Alfonso ;Taglialatela-Scafati, Orazio

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
526 KB
Volume
1995
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

A specimen of the marine sponge Agelas longissima was analyzed for glycosphingolipids. Three cerebrosides 1a‐3a were isolated, each as a mixture of homologs. The structure of the new glycosphingolipid 1a was elucidated by extensive NMR studies of its peracetate derivative and chemical analysis. Compound 2a, previously isolated from another specimen of A. longissima, exhibits in the new specimen a remarkably different alkyl chain composition.

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## Abstract The marine sponge __Agelas clathrodes__ was analyzed for gly‐cosphingolipids, and four cerebrosides (1a‐4a) were isolated, each as a mixture of homologs. The structure of the new glycosphingolipid 1a was elucidated by extensive NMR studies of its peracetate and by chemical analysis. The

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## Abstract The glycosphingolipid (GSL) composition of the marine sponge __Agelas conifera__ was investigated. In addition to three GSLs previous isolated from __Agelas clathrodes__ (2a‐4a), the novel α‐glycosylceramide 1a was isolated as a major component of the GSL mixture, and its structure was