New 1, 4-benzoquinone derivatives, ardisiaquinones D (2), E (4), and F (5) along with the known ardisiaquinones A (1) and B (3) have been isolated from the leaves of Ardisia sieboldii (Myrsinaceae) and shown to be 5-lipoxygenase inhibitors. Their structures have been elucidated by spectroscopic analysis and chemical degradation. The degree of inhibition of 5-lipoxygenase activity by the ardisiaquinones and some derivatives of ardisiaquinone A is reported.
新的 1,4-苯醌衍
生物 Ardisiaquinones D (2)、E (4) 和 F (5) 以及已知的 ardisiaquinones A (1) 和 B (3) 已从 Ardisia sieboldii(Myrsinaceae)的叶子中分离出来,并被证明是 5-脂氧合酶
抑制剂。它们的结构已通过光谱分析和
化学降解得到阐明。报告了阿地西亚醌和阿地西亚醌 A 的一些衍
生物对 5-脂氧合酶活性的抑制程度。