Characterization and Antiglycation Activity of Phenolic Constituents from Viscum album (European Mistletoe)
作者:M. Iqbal Choudhary、Saima Maher、Afshan Begum、Ahmed Abbaskhan、Sajjad Ali、Ambreen Khan、Shafique-ur-Rehman、Atta-ur-Rahman
DOI:10.1248/cpb.58.980
日期:——
4′-O-[β-D-Apiosyl(1→2)]-β-D-glucosyl]-5-hydroxyl-7-O-sinapylflavanone (1), 3-(4-acetoxy-3,5-dimethoxy)-phenyl-2E-propenyl-β-D-glucopyranoside (2), 3-(4-hydroxy-3,5-dimethoxy)-phenyl-2E-propenyl-β-D-glucopyranoside (3), 5,7-dimethoxy-4′-O-β-D-glucopyranoside flavanone (4), 4′,5-dimethoxy-7-hydroxy flavanone (5), and 5,7-dimethoxy-4′-hydroxy flavanone (6), were isolated from the organic extracts of Viscum album L. (European Mistletoe). These compounds were studied for their anti-glycation and antioxidant properties. The structures of new compounds 1 and 2 were deduced on the basis of spectroscopic evidence.
4′-O-[β-<小>D小>-芹基(1→2)]-β-<小>D小>-葡萄糖基]-5-羟基-7-O-芥子基黄烷酮 (1 ), 3-(4-乙酰氧基-3,5-二甲氧基)-苯基-2E-丙烯基-β-<小>D小>-吡喃葡萄糖苷 (2), 3-(4-羟基-3,5-二甲氧基) )-苯基-2E-丙烯基-β-<小>D小>-吡喃葡萄糖苷 (3)、5,7-二甲氧基-4′-O-β-<小>D小>-吡喃葡萄糖苷黄烷酮 (4 )、4',5-二甲氧基-7-羟基黄烷酮 (5) 和 5,7-二甲氧基-4'-羟基黄烷酮 (6) 从槲寄生(欧洲槲寄生)的有机提取物中分离出来。研究了这些化合物的抗糖化和抗氧化特性。新化合物1和2的结构是根据光谱证据推导的。