Abstract
A new bisdesmosidic furostanol saponin, along with a known spirostanol saponin, furcreastatin, were isolated from Furcraea gigantea Vent. (Agavaceae). The structure of the new saponin was elucidated as 3-[(O-6-deoxy-α-L-mannopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1å 3)-O-[O-β-D-glucopyranosyl-(1→3)-β-D-glucopyranosyl-(1→2)-O-β-D-glucopyranosyl-(1→4)-β-D-galactopyranosyl)oxy]-(3β, 5α, 25R)-26-(β-D-glucopyranosyloxy)-22-hydroxyfurost-12-one. The structural identification was performed using a combination of spectroscopic techniques and chemical conversions. Furcreastatin showed a powerful haemolytic effect in the in vitro assay, but the new bisdesmosidic furostanol saponin demonstrated only a significant inhibition of the capillary permeability activity.
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Published in Khimiya Prirodnykh Soedinenii, No. 3, pp. 259–262, May–June, 2006.
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Pereira da Silva, B., Oliveira Campos, P. & Paz Parente, J. Chemical structure and biological activity of steroidal saponins from Furcraea gigantea . Chem Nat Compd 42, 316–321 (2006). https://doi.org/10.1007/s10600-006-0109-3
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DOI: https://doi.org/10.1007/s10600-006-0109-3