info:eu-repo/semantics/article
Triterpenoid saponins from Lippia alba (Mill.) N. E. Brown
Fecha
2010-03Registro en:
Farias, Mareni R.; Pértile, Roberto; Correa, Melissa M.; Rojo de Almeida, Maria Tereza; Palermo, Jorge Alejandro; et al.; Triterpenoid saponins from Lippia alba (Mill.) N. E. Brown; Sociedade Brasileira de Química; Journal of the Brazilian Chemical Society; 21; 5; 3-2010; 927-933
0103-5053
1678-4790
CONICET Digital
CONICET
Autor
Farias, Mareni R.
Pértile, Roberto
Correa, Melissa M.
Rojo de Almeida, Maria Tereza
Palermo, Jorge Alejandro
Schenkel, Eloir P.
Resumen
Two saponins were isolated from the leaves of Lippia alba. Their structures were established using one- and two-dimensional NMR spectroscopy and mass spectrometry. These new compounds were elucidated as 3-Ο-β-D- glucopyranosyl-28-Ο-(α-L-rhamnopyranosyl-(1→3) -β-Dxylopyranosyl-( 1→4)-α-L-rhamnopyranosyl-(1→2)-α- L-arabinopyranosyl)-16α, 23-dihydroxy-olean- 12-en-28-oic acid, named as Lippiasaponin I (2) and as 3-Ο-β-D-glucopyranosyl-28-Ο- (α-L-rhamnopyranosyl-(1→3)-β-D-xylopyranosyl-(1→4) -α-L-rhamnopyranosyl-(1→3)-α-Larabinopyranosyl)- 16α, 23-dihydroxy-olean-12-en-28-oic acid, named Lippiasaponin II (3). Das folhas de Lippia alba foram isoladas duas saponinas. As estruturas destas saponinas foram estabelecidas empregando métodos espectroscópicos, principalmente RMN mono e bi-dimensional e espectrometria de massas. Estes novos compostos foram caracterizados como ácido 3-O-β-D-glucopiranosil-28-O-(α-L-rhamnopiranosil-(1→3)-β-D-xilopiranosil-(1→4)-α-L-rhamnopiranosil-(1→2)-α-L-arabinopiranosil)-16α,23-di-hidróxi-olean-12-en-28-óico, designada Lippiasaponina I (2) e como ácido 3-O-β-D-glucopiranosil-28-O-(α-L-rhamnopiranosil-(1→3)-β-D-xilopiranosil-(1→4)-α-L-rhamnopiranosil-(1→3)-α-L-arabinopiranosil)-16α,23-di-hidróxi-olean-12-en-28-óico, designada Lippiasaponina II (3).