Flavonoids and Phenolics from the Wholeplant of Macrosolen Bidoupensis Tangane & V.S. Dang

Five flavonoids, including quercetin (1) and four its derivatives, quercitrin (2), isoquercitrin (3), astibin (4), and rutin (5), together with two phenolic glycosides, 3,3 '-di-O-methylellagic acid 4-O-beta-D-xylopyranoside (6), and aesculin (7) were isolated from the whole plants of Macrosolen bidoupensis Tangane & V.S. Dang. Their chemical structures were characterized using HR-ESI-MS, NMR data and comparison with published data. Compounds (3, 4 & 7) were notified from the Macrosolen genus for the first time, whereas, all isolated compounds were informed for the first time from this species.