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  • Title: Steroidal saponins from the fruits of Solanum torvum.
    Author: Colmenares AP, Rojas LB, Mitaine-Offer AC, Pouységu L, Quideau S, Miyamoto T, Tanaka C, Paululat T, Usubillaga A, Lacaille-Dubois MA.
    Journal: Phytochemistry; 2013 Feb; 86():137-43. PubMed ID: 23218611.
    Abstract:
    Seven steroidal glycosides have been isolated from the fruits of Solanum torvum Swartz. Their structures were established by 2D NMR spectroscopic techniques ((1)H,(1)H-COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectrometry as (25S)-26-(β-D-glucopyranosyloxy)-3-oxo-5α-furost-20(22)-en-6α-yl-O-β-D-xylopyranoside (1), (25S)-26-(β-D-glucopyranosyloxy)-3-oxo-22α-methoxy-5α-furostan-6α-yl-O-β-D-xylopyranoside (2), (25S)-26-(β-D-glucopyranosyloxy)-3β-hydroxy-22α-methoxy-5α-furostan-6α-yl-O-α-L-rhamnopyranosyl-(1→3)-β-D-glucopyranoside (3), (25S)-3β-hydroxy-5α-spirostan-6α-yl-O-β-D-xylopyranoside (4), (25S)-3-oxo-5α-spirostan-6α-yl-O-β-D-xylopyranoside (5), (25S)-3β-hydroxy-5α-spirostan-6α-yl-O-β-D-glucopyranoside (6), (25S)-3β,27-dihydroxy-5α-spirostan-6α-yl-O-β-D-glucopyranoside (7).
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