Journal of the Chemical Society. Perkin transactions I p. 1855 - 1862 (1981)
Update date:2022-08-05
Topics:
De Simone, Francesco
Dini, Antonio
Finamore, Estea,
Minale, Luigi
Pizza, Cosimo
et al.
The toxic major saponin from the starfish Echinaster sepositus, has been completely characterized.The structure is unique having as it does both a Δ7,3β,6β-dioxygenated-23-oxosteroidal moiety and a sugar moiety<β-D-glucopyranosyl-(1->2)-β-D-galactopyranosyl-(1->2)-β-D-glucuronopyranosyl> which bridges the C-3 and C-6 atoms of the steroid.The 3-β-hydroxy-group of the steroid forms an O-acetal linkage with the glucuronate unit, while the HO-C(6''') of the glucopyranosyl unit is attached to C-6 of the aglycone, forming a 6β-O-ethereal linkage.
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