Abstract: A new ionone derivative and six known flavonoids were isolated from the aerial parts of Isodon leucophyllus (Dunn) Kudo. Their structures were respectively elucidated as 13-carboxy-blumenol C (1), 5, 7, 3', 4'-tetramethoxyflavone (2), cirsiliol (3), 5-hydroxy-6, 7, 3', 4'-tetramethoxyflavone (4), 3'-hydroxy-5, 7, 8, 4'-tetramethoxyflavone (5), isosinensetin (6) and isoquercetrin (7), based on their spectra analysis. All of the six flavonoids were reported firstly from this plant.

Key words: Isodon leucophyllus

摘要： 从白叶香茶菜Isodon leucophyllus(Dunn)Kudo地上部分的丙酮提取物中，分离得到1个新的紫罗兰酮类化合物和6个黄酮类化合物，经IR，UV，MS，NMR波谱数据分析，其结构分别确定为：13-羧基布卢姆醇C(1)，5，7，3′，4′-四甲氧基黄酮(2)，线蓟素(3)，5-羟基-6，7，3′，4′-四甲氧基黄酮(4)，3′-羟基-5，7，8，4′-四甲氧基黄酮(5)，异甜橙素(6)和异槲皮素(7)。其中，化合物2-7均为首次从该植物中得到。

关键词: 白叶香茶菜, 唇形科, 13-羧基布卢姆醇 C, 黄酮类化合物