A new acylated flavone glycoside from the fruits of Stocksia brauhica.
Phytochemical investigations of the fruits of Stocksia brauhica (Sapindaceae) resulted in the isolation of a new acylated flavone glycoside. Its structure of the new compound brauhenefloroside D (1) was established as 3-O-[(alpha-L-rhamnopyranosyl)oxy]-7-O-[(acetyl)-beta-D-glucopyranosyl (1 --> 4)]-[6-O-(4-hydroxy-E-cinnamoyl)-beta-D-glucopyranosyl-(1 --> 2)-alpha-L-rhamnopyranosyl)-oxy]-kaempferol. The structure elucidation of the new compound was based primarily on 1D and 2D NMR analysis, including COSY, HMBC and HMQC correlations.
Ahmad
V U
VU
International Centre for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan. vuahmad@cyber.net.pk
Bader
S
S
Arshad
S
S
Iqbal
S
S
Ahmed
A
A
Mohammad
F V
FV
Khan
A
A
Kann
A
A
Tareen
R B
RB
D000215:Acylation; D047309:Flavones / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D029631:Sapindaceae / Q000737:chemistry*; D014312:Trisaccharides / Q000737:chemistry / Q000302:isolation & purification*
C525298:3-O-((rhamnopyranosyl)oxy)-7-O-((acetyl)glucopyranosyl-1-4)-(6-O-(4-hydroxycinnamoyl)glucopyranosyl-1-2-rhamnopyranosyloxy)kaempferol; D047309:Flavones; D006027:Glycosides; D014312:Trisaccharides