Isolation and characterization of dihydrohomoisoflavonoids from Portulaca oleracea L.
作者:Jianbo Liu、Hongqing Wang、Hongjie Shao、Junhua Sun、Chaoxuan Dong、Ruoyun Chen、Jie Kang
DOI:10.1016/j.phytochem.2024.114071
日期:2024.6
enantiomeric aglycones [(,)-portulacanones B () and C () and (,)-oleracones C () and Q ()] and four pairs of epimeric glycosides [portulacasides A−D and epiportulacasides A−D (−)], were obtained from L. Among them, (,)-oleracone Q () and four pairs of epimeric glycosides (−) were reported for the first time. The 50% EtOH fraction from the 70% EtOH extract prevented HepG2 human liver cancer cell damage
八对二氢高异黄酮类化合物 (−),包括四对对映体苷元 [(,)-马齿苋酮 B () 和 C () 和 (,)-马齿苋酮 C () 和 Q ()] 和四对差向异构体糖苷 [马齿苋苷 A -D和表马齿苋苷AD(-)],是从L获得的。其中,(,)-奥拉酮Q()和四对差向异构糖苷(-)为首次报道。 70% EtOH提取物中的50% EtOH组分可防止-乙酰-氨基苯酚(APAP)诱导的HepG2人肝癌细胞损伤,细胞存活率为62.3%。从 50% EtOH 馏分中分离出的马齿苋苷 B () 具有保肝和抗炎作用。该化合物将 APAP 损伤的 HepG2 人肝癌细胞的存活率从 40.0% 提高到 51.2%,并减少 RAW 264.7 巨噬细胞中一氧化氮的产生,导致抑制率为 46.8%。