New Flavonoids and Turkesterone-2-O-Cinnamate from Leaves of Rhaponticum uniflorum
作者:D. N. Olennikov、N. I. Kashchenko
DOI:10.1007/s10600-019-02662-2
日期:2019.3
Leaves of Rhaponticum uniflorum (L.) DC. (Asteraceae) afforded 46 compounds including seven new flavonoids that were identified using UV, IR, and NMR spectroscopy and mass spectrometry as 6-hydroxyluteolin-7-O-(2′-O-caffeoyl)-β-D-glucopyranoside (rhaunoside A, 1), 6-hydroxyluteolin-7-O-(6″-O-cinnamoyl)-β-D-glucopyranoside (rhaunoside B, 2), 6-hydroxyluteolin-4′-O-β-D-glucopyranoside (rhaunoside C, 3), nepetin-7-O-(6″-O-caffeoyl)-β-D-glucopyranoside (rhaunoside D, 4), nepetin-7-O-(6″-O-cinnamoyl)-β-D-glucopyranoside (rhaunoside E, 5), nepetin-3′-O-β-D-glucopyranoside (rhaunoside F, 6), and luteolin-7-O-(2″-O-caffeoyl)-β-D-glucopyranoside (rhaunoside G, 7) and the new ecdysteroid turkesterone-2-O-cinnamate (8).
Rhaponticum uniflorum (L.) DC.(用紫外光谱、红外光谱、核磁共振光谱和质谱鉴定出了 46 种化合物,其中包括 7 种新的黄酮类化合物,分别是 6-羟基木犀草素-7-O-(2′-O-咖啡酰基)-β-D-吡喃葡萄糖苷(木犀草素苷 A、1)、6-羟基木犀草素-7-O-(6″-O-肉桂酰基)-β-D-吡喃葡萄糖苷(木犀草苷 B,2)、6-羟基木犀草素-4′-O-β-D-吡喃葡萄糖苷(木犀草苷 C、3),奈皮素-7-O-(6″-O-咖啡酰基)-β-D-吡喃葡萄糖苷(荷包牡丹苷 D,4),奈皮素-7-O-(6″-O-肉桂酰基)-β-D-吡喃葡萄糖苷(荷包牡丹苷 E,5)、芍药苷 F,6)和木犀草素-7-O-(2″-O-咖啡酰基)-β-D-吡喃葡萄糖苷(芍药苷 G,7)以及新的蜕皮甾类化合物 turkesterone-2-O-肉桂酸酯(8)。