Two new glucosides, named schizonepetosides A (1) and B (2), were isolated from the spikes of Schizonepeta tenuifolia (Labiatae). The structure of 1 was elucidated as (1S, 4R, 8E)-9-O-β-D-glucopyranosyl-p-menth-8 (9)-en-3-one on the basis of chemical and spectral studies. Compound 2 was identified as a glucoside possessing a dioxane ring formed by the double linkage between glucose and the aglycone, (1S, 4R, 8R)-8, 9-dihydroxy-p-menth-3-one, by X-ray crystallographic analysis.
从 Schizonepeta tenuifolia(唇形科植物)的穗状花序中分离出了两种新的苷类,分别命名为 schizonepetosides A (1) 和 B (2)。根据化学和光谱研究,阐明了 1 的结构为 (1S, 4R, 8E)-9-O-β-D-Glucopyranosyl-p-menth-8 (9)-en-3-one 。通过 X 射线晶体学分析,确定化合物 2 是一种葡萄糖苷,具有由葡萄糖和苷元 (1S,4R,8R)-8,9-二羟基-对薄荷-3-酮之间的双链所形成的二氧环。