Studies on the nepalese crude drugs. XIII. On the flavonoid and iridoid constiuents of the root of Scutellaria grossa Wall.
作者:Yuichi KIKUCHI、Yukinori MIYAICHI、Tsuyoshi TOMIMORI
DOI:10.1248/cpb.39.1051
日期:——
From the root of Scutellaria grossa WALL, three new natural flavonoids (I-III) were isolated, together with fifteen known flavonoids (IV, VIII-XXI), two iridoids (V and VI) and trans-cinnamic acid (VII). The structures of I-III were shown to be 5-hydroxy-7, 8, 2', 6'-tetramethoxyflavone, 5, 6, 2'-trihydroxy-7, 8-dimethoxyflavone and (2S)-5-hydroxy-7, 8, 2', 6'-tetramethoxyflavonone, respectively, on the basis of the chemical and spectral data. Compound I has a already been synthesized.
从毛黄芩(Scutellaria grossa WALL)的根中分离出了三种新的天然黄酮类化合物(I-III),以及 15 种已知的黄酮类化合物(IV、VIII-XXI)、两种鸢尾类化合物(V 和 VI)和反式肉桂酸(VII)。根据化学和光谱数据,I-III 的结构分别为 5-hydroxy-7, 8, 2', 6'-tetramethoxyflavone, 5, 6, 2'-trihydroxy-7, 8-dimethoxyflavone 和 (2S)-5-hydroxy-7, 8, 2', 6'-tetramethoxyflavonone。化合物 I 已经合成。