Investigation of chemical constituents of rhododendron luteum leaves

In this work, purification and isolation of major compounds from Rhododendron luteum's leaves by spectroscopic techniques was aimed. Dried and powdered leaves were respectively extracted with %80 ethanol, water and chloroform. Extracts were controlled on TLC. Isolation and purification studies were carried out. Five (5) major compounds were isolated after chromatographic studies. Their moleculer structures were identified as D-Fructose, D-Xylose, D-Mannitol, Avicularin and Isoquercetin by using spectroscopic techniques (1H-NMR, 13C-NMR, HSQC, HMBC, COSY) and literature data. These compounds isolated for the first time from Rhododendron luteum plant.