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Starfish saponins II. 22,23-epoxysteroids, minor genins from the starfish Echinaster sepositus

✍ Scribed by L. Minale; R. Riccio; F.De Simone; A. Dini; C. Pizza

Publisher: Elsevier Science
Year: 1979
Tongue: French
Weight: 231 KB
Volume: 20
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)86026-3

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On the basis of comparative 'H-and 13C-n.m.r. data, the structures of the minor saponins fz>orn the starfish Eehinuster sepositus have been elucidated to be 2 -4. They closely resemble 1, the major saponin from the same starfish, and, in addition to the cycZic trisaccharide moiety bridging C-3 and C

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The occurrence of toxic saponins in starfish has been known since some years ago'. They are cytotoxic, hemolytic, antiviral2 and also induce escape reaction in molluscs3. A number of steroidal aglycones produced by acid hydrolysis of star fish saponins (asterosaponins) have been characterized; all o