Secoiridoid and flavonoid glycosides from Gonocaryum calleryanum
作者:Tetsuo Kaneko、Mayumi Sakamoto、Kazuhiro Ohtani、Aiko Ito、Ryoji Kasai、Kazuo Yamasaki、William G. Padorina
DOI:10.1016/0031-9422(94)00884-v
日期:1995.5
leaves of Gonocaryum calleryanum afforded four new secoiridoidglycosides acylated with 2,3-dihydroxy-2-methylbutanoic acid, three of which have a novel 10-membered dilactone-ring. From this plant, we also isolated a new flavonoid glycoside, apigenin 7-O-β-apiofuranosyl (1 → 6)-β- d -glucopyranoside, along with six known flavonoids and flavonoid glycosides, apigenin, apigenin-5,7-dimethyl ether, apigenin
Hydroxylated Ethacrylic and Tiglic Acid Derivatives from the Stems and Branches of <i>Enkianthus chinensis</i> and Their Potential Anti-inflammatory Activities
Two new hydroxylated ethacrylic acid derivatives (compounds 1 and 2) and 11 new hydroxylated tiglic acid derivatives (compounds 3–13), together with one known compound (compound 14), were isolated from the stems and branches of Enkianthus chinensis. Their structures were established by extensive spectroscopic analyses, while their absolute configurations were determined by X-raycrystallographic methods
两个新的羟基化的乙基丙烯酸衍生物(化合物1和2)和11个新的羟基化的惕各酸衍生物(化合物3 - 13),与一种已知化合物(化合物一起14),分离从茎和树枝吊钟红豆杉。它们的结构是通过广泛的光谱分析确定的,而它们的绝对构型是通过 X 射线晶体学方法(化合物1和2)、Mo 2 (OAc) 4诱导的电子圆二色性实验(化合物3和4) 和化学方法(化合物5 – 11)。本研究是对该物种次生代谢物的首次调查。在 LPS 诱导的小鼠腹腔巨噬细胞模型中评估了所有分离化合物的抗炎活性。值得注意的是,化合物3和12都对 NO 产生发挥了有效的抑制作用,IC 50值分别为 2.9 和 1.2 μM。