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Planta Med 1990; 56(2): 218-221
DOI: 10.1055/s-2006-960929
DOI: 10.1055/s-2006-960929
Papers
© Georg Thieme Verlag Stuttgart · New York
Steroidal Sapogenins from Tacca leontopetaloides
Weitere Informationen
Publikationsverlauf
1989
Publikationsdatum:
05. Januar 2007 (online)
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Abstract
Diosgenin and its ring-F-hydroxylated derivatives isonarthogenin {spirost-5-ene-3,27-diol {3β, 22R, 25S)} and isonuatigenin {spirost-5-ene-3,25-diol (3β, 22R, 25S)}, together with the 22,25-epoxyfurost-5-ene isomer nuatigenin {furost-5-ene-3,26-diol-22,25-epoxy (3β, 22R, 25S)}, were identified as the major steroidal sapogenins of the acid hydrolysate of an extract of leaves of Tacca leontopetaloides by IR, 1H-NMR, 13C-NMR, and mass spectroscopy. A diosgenin ester was isolated which apparently arose by ring closure of a glycosylated furostene during hydrolysis.
Key words
Tacca leontopetaloides - steroidal sapogenins - diosgenin - isonarthogenin - molluscicidal activity