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Spectral Assignments and Reference Data Complete 1H and 13C NMR assignments of six saponins from Sapindus trifoliatus

Tipo de material: TextoTextoSeries ; Magnetic Resonance in Chemistry, 43(12), p.1072-1076, 2005Trabajos contenidos:
  • Grover, R.K
  • Roy, A.D
  • Roy, R
  • Joshi, S. K
  • Srivastava, V
  • Arora, S.K
Tema(s): Recursos en línea: Resumen: Complete 1H and 13C spectral assignments are reported for six saponins from the pericarp of Sapindus trifoliatus (Hindi name: Reetha)collected from Madhya Pradesh and Maharashtra, India, using only 1D and 2D NMR methods. The structures of the compounds were elucidated as hederagenin 3-O-(3-O-acetyl-b-Dxylopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin 3-O-(4-O-acetyl-b-D-xylopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin -O-(3,4-O-diacetyl-b-D-xylopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin 3-O-(3,4-O-diacetyl-a-L-arabinopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin 3-O-(b-D-xylopyranosyl)-(1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside and hederagenin 3-O-(a-L-arabinopyranosyl)-(1-3)-a-L-rhamnopyranosyl-( 1-2)-a-L-arabinopyranoside. It is concluded that saponins of this complexity approach the limit of structural complexity, which can be solved by NMR alone, precisely and quickly
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Complete 1H and 13C spectral assignments are reported for six saponins from the pericarp of Sapindus trifoliatus (Hindi name: Reetha)collected from Madhya Pradesh and Maharashtra, India, using only 1D and 2D NMR methods. The structures of the compounds were elucidated as hederagenin 3-O-(3-O-acetyl-b-Dxylopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin 3-O-(4-O-acetyl-b-D-xylopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin -O-(3,4-O-diacetyl-b-D-xylopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin 3-O-(3,4-O-diacetyl-a-L-arabinopyranosyl)-( 1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside, hederagenin 3-O-(b-D-xylopyranosyl)-(1-3)-a-L-rhamnopyranosyl-(1-2)-a-L-arabinopyranoside and hederagenin 3-O-(a-L-arabinopyranosyl)-(1-3)-a-L-rhamnopyranosyl-( 1-2)-a-L-arabinopyranoside. It is concluded that saponins of this complexity approach the limit of structural complexity, which can be solved by NMR alone, precisely and quickly

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