Saponins from the seeds of Achras sapota.
A new pentacyclic triterpenoid saponin (2) along with one known was isolated from the cotyledons of Achras sapota. Their structures were determined with the help of (1)H NMR, (13)C NMR and MS spectral data. The isolated compounds were named as 3-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl-(1-->3)-beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl protobassic acid (1) and 3-O-beta-D-glucopyranosyl-(1-->3)-beta-D-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl-(1-->3)-beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl-16alpha-hydroxy protobassic acid (2). Compound 2 showed antibacterial activity against Gram positive and negative bacteria.
Ahmed
Rehana
R
Department of Chemistry, Faculty of Science, University of Karachi, Karachi, Pakistan. rehanaifzal@gmail.com
Rashid
Fahima
F
Ahmed
Viqar Uddin
VU
Mohammad
Faryal Vali
FV
Noorwala
Mushtaq
M
Bibi
Nazia
N
Kazmi
Shahana Urooj
SU
D015394:Molecular Structure; D012503:Saponins / Q000737:chemistry*; D029632:Sapotaceae / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry*
C530935:3-O-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl-(1-3)-beta-D-xylopyranosyl-(1-4)-alpha-L-rhamnopyranosyl-(1-2)-alpha-L-arabinopyranosyl-16alpha-hydroxy protobassic acid; C530936:3-O-beta-D-glucopyranosyl-(1-6)-beta-D-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl-(1-3)-beta-D-xylopyranosyl-(1-4)-alpha-L-rhamnopyranosyl-(1-2)-alpha-L-arabinopyranosyl protobassic acid; D012503:Saponins; D014315:Triterpenes