Lignans and aromatic glycosides from Piper wallichii and their antithrombotic activities
作者:Yan-Ni Shi、Yi-Ming Shi、Lian Yang、Xing-Cong Li、Jin-Hua Zhao、Yan Qu、Hong-Tao Zhu、Dong Wang、Rong-Rong Cheng、Chong-Ren Yang、Min Xu、Ying-Jun Zhang
DOI:10.1016/j.jep.2014.12.038
日期:2015.3
hydrolysis in case of the new glycoside 2. Determination of absolute configurations of the new compound 1 was facilitated by calculated electronic circular dichroism using time-dependent density-functional theory. All compounds were tested for their inhibitory effects on platelet aggregation induced by platelet activating factor (PAF) in rabbits׳ blood model, from which the active ones were further evaluated
民族药理学意义 Piper wallichii(Miq。)Hand.-Mazz。是在中国广泛用于治疗类风湿关节炎,炎症性疾病,脑梗塞和心绞痛的药用植物。先前的研究表明,Piper spp中的木脂素和新木脂素。对血小板聚集具有潜在的抑制作用。在本研究中,我们调查了Piper wallichii的化学成分及其抗血栓形成活性,以支持其传统用途。 材料和方法 使用各种色谱方法(包括半制备型HPLC)分离和纯化Piper wallichii风干茎的甲醇提取物。通过详细的光谱分析确定分离物的化学结构,并在新糖苷2情况下进行酸性水解。新的化合物1的绝对构型的确定通过使用时间依赖性密度泛函理论计算的电子圆二色性来促进。在兔的血液模型中测试了所有化合物对血小板活化因子(PAF)诱导的血小板聚集的抑制作用,从中进一步评价了活性化合物在斑马鱼模型中的体内抗血栓形成活性。 结果 一个新的新木脂素,piperwalliol