A furostanol glycoside from rhizomes of Costus spicatus

A new furostanol glycoside was isolated from the rhizomes of Costus spicatus. Its structure was established as (3β,22α,25 R)-26-(β- d-glucopyranosyloxy)-22-methoxyfurost-5-en-3-yl O- d-apio-β- d-furanosyl-(1→2)- O-[6-deoxy-α- l-mannopyranosyl-(1→4)]-β- d-glucopyranoside. The structural identificatio...

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Veröffentlicht in:	Phytochemistry (Oxford) 1999-08, Vol.51 (7), p.931-935
Hauptverfasser:	Pereira Da Silva, Bernadete, Bernardo, Robson Roney, Parente, José P
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Carbohydrate Conformation Carbohydrate Sequence chemical constituents of plants Chemical constitution chemical structure Costaceae Costus Costus spicatus Fundamental and applied biological sciences. Psychology Furostanol glycoside glycosides Magnetic Resonance Spectroscopy Mass Spectrometry Molecular Sequence Data nuclear magnetic resonance spectroscopy Plant physiology and development Plants, Medicinal - chemistry Rhizomes saponins Saponins - chemistry Saponins - isolation & purification spectral analysis Steroidal saponin Steroids
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Zusammenfassung:	A new furostanol glycoside was isolated from the rhizomes of Costus spicatus. Its structure was established as (3β,22α,25 R)-26-(β- d-glucopyranosyloxy)-22-methoxyfurost-5-en-3-yl O- d-apio-β- d-furanosyl-(1→2)- O-[6-deoxy-α- l-mannopyranosyl-(1→4)]-β- d-glucopyranoside. The structural identification was performed using detailed analysis of 1 H and 13 C NMR spectra including 2D NMR spectroscopic techniques (COSY, HETCOR and COLOC) and chemical conversions.
ISSN:	0031-9422 1873-3700
DOI:	10.1016/S0031-9422(99)00077-1