Flavonol glycosides with alpha-D-aldohexoses from Rhododendron irroratum.
Two new flavonol glycosides which contain rare alpha-D-galactose or alpha-D-glucose were obtained from the flowers of Rhododendron irroratum Franch., namely myricetin 3-O-beta-D-galactoside-3'-O-alpha-D-glucoside (1) and myricetin 3-O-beta-D-galactoside-3'-O-alpha-D-galactoside (2). Their structures were determined by UV, IR, HR-ESI-MS, ESI-MS, 1D- and 2D-NMR techniques.
Yang
Ming Hua
MH
Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, PR China.
Luo
Jian Guang
JG
Huang
Xue Feng
XF
Kong
Ling Yi
LY
D044948:Flavonols / Q000737:chemistry*; D005690:Galactose / Q000737:chemistry; D005947:Glucose / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D029793:Rhododendron / Q000737:chemistry*
D044948:Flavonols; D006027:Glycosides; D005947:Glucose; D005690:Galactose