Following the characterization of the triterpene constituents in Chinese Alismatis Rhizoma, we investigated the chemical structures of orientalols A, B, and C, isolated from the less polar fraction of the crude drug together with two known sesquiterpenes, alismol and alismoxide. On the basis of the chemical and physicochemical evidence, the structures of orientalols A, B, and C have been determined and those of alismol and alismoxide were revised.All five sesquiterpenes were found to show an inhibitory effect on the contraction of isolated bladder smooth muscle induced by carbachol.
在对中药黄精中的三
萜类成分进行表征之后,我们研究了从粗药极性较低的部分中分离出的东方
酚 A、B 和 C 以及两种已知
倍半萜--烯丙基
酚和烯丙基氧化物--的
化学结构。在
化学和理化证据的基础上,确定了东方
酚 A、B 和 C 的结构,并修正了 alismol 和 alismoxide 的结构。研究发现,所有五种
倍半萜都对
卡巴胆碱诱导的离体膀胱平滑肌收缩有抑制作用。