Triterpenoid saponins from Maesa lanceolata.
Six new homologous triterpenoid saponins were isolated from the methanol extract of the leaves of Maesa lanceolata and characterized as 3 beta-O-[alpha-L-rhamnopyranosyl(1 --> 2)-beta-D-galactopyranosyl (1 --> 3)]-[beta-D-galactopyranosyl(1 --> 2)]-beta-D-glucuronopyranosides alpha-diol, 22 alpha-angeloyloxy-16 alpha-butanoyloxy-13 beta,28-oxydoolean-21 beta,28 alpha-diol, 16 alpha,22 alpha-diangeloyloxy-13 beta,28-oxydoolean-21 beta,-28 alpha-diol, 22 alpha-angeloyloxy-13 beta,28-oxydo-16 alpha-(2-methyl-butanoyloxy)-olean-21 beta,28 alpha-diol, 21 beta-acetoxy-22 alpha-angeloyloxy-13 beta,28-oxydo-16 alpha-propanoyloxyolean-28 alpha-ol, 21 beta-acetoxy-22 alpha-angeloyloxy-16 alpha-butanoyloxy-13 beta,28-oxydoolean-28 alpha-01. The structures were established on the basis of chemical and spectral evidence.
Sindambiwe
J B
JB
Department of Pharmaceutical Sciences, University of Antwerp, Belgium.
Baldé
A M
AM
De Bruyne
T
T
Pieters
L
L
Van den Heuvel
H
H
Claeys
M
M
Van den Berghe
D A
DA
Vlietinck
A J
AJ
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010936:Plant Extracts; D018515:Plant Leaves; D010946:Plants, Medicinal; D012432:Rwanda; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014197:Trees; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes