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Saponins SAPO50 and SAPO30, of which SAPO50 is highly haemolytic, have been isolated from the commercial Merck Saponin. Their structures have been determined exclusively by high-field gradient-enhanced NMR methods. The 1 H and 13 C NMR spectra of these saponins in pyridine-deuterium oxide have been assigned by homonuclear and heteronuclear correlation experiments. Anomeric configurations...