A phytochemical study of the whole plants of Chimaphila japonica Miq. led to the isolation of 23 compounds, including ten triterpenoids (1–10), six flavonoids (11–16), two sterols (17 and 18), two quinonoids (19 and 20), one saccharide derivative (21), one phenolic glycoside (22), and one megastigmane glycoside (23). The structures of these isolated compounds were identified using NMR spectroscopy (¹H and ¹³C) by comparison with previously reported data. All compounds, except 19 and 22, were reported from C. japonica for the first time. Among them, 16 compounds (1–4, 6–9, 12, 13, 15, 16, 18, 20, 21, and 23) were reported from genus Chimaphila for the first time, while compounds 12, 16, and 23 were isolated from the Ericaceae family for the first time. The chemotaxonomic significance of the isolates was also discussed.

整个植物的植物化学研究喜冬草属粳木麻黄。导致分离出23种化合物，包括十种三萜类化合物（1 – 10），六种类黄酮（11 – 16），两种固醇（17和18），两种醌类（19和20），一种糖衍生物（21），一种酚类糖苷（22）和一种megastigmane糖苷（23）。通过与先前报道的数据进行比较，使用NMR光谱（¹ H和¹³ C）鉴定了这些分离的化合物的结构。所有化合物，除了19和22是首次从日本血吸虫中报告。其中，16种化合物（1 - 4，6 - 9，12，13，15，16，18，20，21，和23）从属报道喜冬草属首次，而化合物12，16，和23分别首次与Ericaceae家族分离。还讨论了分离株的化学分类学意义。