Steroid saponins from Solanum laxum |
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| Authors: | F Ferreira S Soulé A Vazquez P Moyna L Kenne |
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| Affiliation: | Cátedra de Farmacognosia y Productos Naturales, Facultad de Química, Montevideo, Uruguay. |
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| Abstract: | Two new steroid saponins, named laxumins A and B, were isolated from the ethanolic extract of the aerial parts of Solanum laxum. These compounds were characterized, using mainly NMR spectroscopy, mass spectrometry and chemical methods, as (23S,25S)-spirost-5-en-3 beta, 15 alpha, 23-triol 3-O-{beta-D-glucopyranosyl-(1-->2)- beta-D-glucopyranosyl-(1-->4)-[alpha-L-rhamnopyranosyl-(1-->2)]-beta-D- galactopyranoside} and 3-O-{beta-D-glucopyranosyl-(1--> 4)-alpha-L-rhamnopyranosyl-(1-->2)]-beta-D-galactopyranoside}, respectively. |
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