Isolation, Characterization, Complete Structural Assignment, and Anticancer Activities of the Methoxylated Flavonoids from Rhamnus disperma Roots
作者:Hamdoon A. Mohammed、Mohammed F. Abd El-Wahab、Usama Shaheen、Abd El-Salam I. Mohammed、Ashraf N. Abdalla、Ehab A. Ragab
DOI:10.3390/molecules26195827
日期:——
including reversed-phase HPLC led to the isolation and purification of three O-methylated flavonoids; 5,4’-dihydroxy-3,6,7-tri-O-methyl flavone (penduletin) (1), 5,3’-dihydroxy-3,6,7,4’,5’-penta-O-methyl flavone (2), and 5-hydroxy-3,6,7,3’,4’,5’-hexa-O-methyl flavone (3) from Rhamnus disperma roots. Additionlly, four flavonoid glycosides; kampferol 7-O-α-L-rhamnopyranoside (4), isorhamnetin-3-O-β-D-glucopyranoside
包括反相 HPLC 在内的不同色谱方法导致了三种O-甲基化黄酮类化合物的分离和纯化;5,4'-二羟基-3,6,7-三-O-甲基黄酮(penduletin) ( 1 ), 5,3'-二羟基-3,6,7,4',5'-五-O-甲基来自鼠李树根的黄酮 ( 2 ) 和 5-羟基-3,6,7,3',4',5'-六-O-甲基黄酮 ( 3 ) 。此外,四种黄酮苷;kampferol 7- O - α -L-rhamnopyranoside ( 4 ), isorhamnetin-3- O - β -D-glupyranoside ( 5 ), 槲皮素 7- O- α -L-rhamnopyranoside ( 6 ) 和 kampferol 3, 7-di- O - α -L-rhamnopyranoside ( 7 ) 以及苄基-O - β -D-吡喃葡萄糖苷 ( 8 ) 被成功分离。这些化合物的完整结构表征基于