The MeOH extract of Asarum sagittarioides (Aristolochiaceae) showed antihistaminic activity. N-Isobutyl-3, 4-methylenedioxybenzamide (1) was isolated as the active principle, and this compound was proved to be an antiallergic substance by pharmacological studies. Furthermore, in order to investigate the structure-activity relationships, some analogues of 1 were synthesized, and compounds 4 and 5 were found to show more potent activity than 1.
箭根薯(马兜铃科)的
甲醇提取物显示出抗
组胺活性。从中分离得到活性成分N-异丁基-3,4-亚甲二氧基苯甲酰胺(1),并通过药理学研究证实该化合物具有抗过敏作用。此外,为了研究结构与活性的关系,合成了一系列1的类似物,其中化合物4和5被发现比1具有更强的活性。