Three new steroidal sulfate pentaglycosides (asterosaponins), goniopectenosides A-C (1-3), were isolated from the polar extract of the starfish Goniopecten demonstrans. The pentasaccharide moiety linked to C-6 of 3 beta -sulfated steroidal aglycones, consists of D-xylose, D-fucose, D-quinovose, and the unprecedented 3-O-methyl-D-quinovose. Their structures were elucidated by extensive NMR experiments as well as chemical evidence. The isolated asterosaponins have been found to significantly inhibit the settlement of the biofouling marine brown macroalga Hincksia irregularis.
Starfish saponin part LVI. Three new asterosaponins from the starfish Goniopecten demonstrans / DE MARINO, Simona; M., Iorizzi; Zollo, Franco; C. D., Amsler; S. P., Greer; J. B., Mcclintock. - In: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. - ISSN 1434-193X. - STAMPA. - 24(2000), pp. 4093-4098.
Starfish saponin part LVI. Three new asterosaponins from the starfish Goniopecten demonstrans
DE MARINO, SIMONA;ZOLLO, FRANCO;
2000
Abstract
Three new steroidal sulfate pentaglycosides (asterosaponins), goniopectenosides A-C (1-3), were isolated from the polar extract of the starfish Goniopecten demonstrans. The pentasaccharide moiety linked to C-6 of 3 beta -sulfated steroidal aglycones, consists of D-xylose, D-fucose, D-quinovose, and the unprecedented 3-O-methyl-D-quinovose. Their structures were elucidated by extensive NMR experiments as well as chemical evidence. The isolated asterosaponins have been found to significantly inhibit the settlement of the biofouling marine brown macroalga Hincksia irregularis.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
