TITLE

Glycosides from the sea cucumber Cucumaria frondosa. III. Structure of frondosides A2-1, A2-2, A2-3, and A2-6, four new minor monosulfated triterpene glycosides

AUTHOR(S)
Silchenko, Alexandra S.; Avilov, Sergey A.; Antonov, Alexandr S.; Kalinovsky, Anatoly I.; Dmitrenok, Pavel S.; Kalinin, Vladimir I.; Stonik, Valentin A.; Woodward, Carl; Collin, Peter D.
PUB. DATE
January 2005
SOURCE
Canadian Journal of Chemistry;Jan2005, Vol. 83 Issue 1, p21
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Frondosides A2-1 (1), A2-2 (2), A2-3 (3), and A2-6 (4) are new monosulfated holostane pentaosides isolated from the sea cucumber Cucumaria frondosa. Their structures have been elucidated on the basis of spectral data (2D NMR and MS). Frondoside A2-2 (2) contains an a,�-unsaturated ketone fragment in the side chain of the aglycon, unique for triterpene glycosides of sea cucumbers.
ACCESSION #
16158390

 

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