作者:Voahangy Ramanandraibe、Philippe Grellier、Marie-Thérèse Martin、Alexandre Deville、Roger Joyeau、David Ramanitrahasimbola、Elisabeth Mouray、Philippe Rasoanaivo、Lengo Mambu
DOI:10.1055/s-2008-1034328
日期:2008.3
Piptadenia pervillei Vatke (Fabaceae) was selected from a screening programme devoted to the search of naturally-occuring antimalarial compounds from plants of Madagascar. Bioassay-guided fractionation of the ethyl acetate extract of the leaves led to the isolation of four phenolic compounds, (+)-catechin ( 1), (+)-catechin 5-gallate ( 2), (+)-catechin 3-gallate ( 3) and ethyl gallate ( 4). Structures
Piptadenia pervillei Vatke(Fabaceae)是从一项筛选程序中挑选出来的,该程序致力于从马达加斯加的植物中搜索天然产生的抗疟化合物。叶片乙酸乙酯提取物的生物测定指导分馏导致分离出四种酚类化合物,(+)-儿茶素(1),(+)-儿茶素5-没食子酸酯(2),(+)-儿茶素3-没食子酸酯(3)和没食子酸乙酯(4)。通过NMR和质谱确定结构。化合物2和3对恶性疟原虫的耐氯喹菌株FcB1表现出最高的体外活性,IC(50)值分别为1.2 microM和1.0 microM,并且未检测到对人胚肺细胞MRC-5的明显细胞毒性(IC(50)值> 75 microM)。