Acetylated Furostene Glycosides from Solanum gilo Fruits

Planta Med
DOI: 10.1055/s-0043-116491

In continuation of our work on a traditional mixture of spices called "Nkui", used in Cameroon for its influence on womenʼs reproductive health, we investigated the chemical composition of Solanum gilo, one component of "Nkui". A methanolic extract was studied in detail. After dereplication of several known compounds, two furo-5-stene-derived saponin glycosides with acetylated sugar moieties were isolated. By extensive 1- and 2D NMR experiments and HR-MS and GC-MS methods, the structures were elucidated as 26-[(3‴,4‴,6‴-tri-O-acetyl)-β-D-glucopyranosyloxy]-22-hydroxyfurost-5-en-3β-yl-O-α-L-rhamnopyranosyl-(1″→2′)-β-D-glucopyranoside (A) and 26-[(3‴,4‴,6‴-tri-O-acetyl)-β-D-glucopyranosyloxy]-22-hydroxyfurost-5-en-3β-yl-[O-α-L-rhamnopyranosyl-(1′′′′→4′)-O-α-L-rhamnopyranosyl-(1″→2′)]-β-D-glucopyranoside (B), both new natural compounds.
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Georg Thieme Verlag KG Stuttgart · New York

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