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从互叶醉鱼草地上部分分出3个环烯醚萜甙类化合物。经化学和光谱方法测定结构为6-O－cinnamoylcatalpol（Ⅰ）、specioside（Ⅱ）和6－O－cis－p－coumaroylcatalpol（Ⅲ）。其中化合物Ⅲ为首次从自然界发现。
Three iridoids were isolated from the top of the grass. The structures determined by chemical and spectroscopic methods were 6-O-cinnamoylcatalpol(I), specioside(II) and 6-O-cis-p-coumaroylcatalpol(III). Compound III was first discovered from nature.