Asterriquinone (ARQ, 1a) is an antitumor metabolite of Aspergillus terreus IFO 6123. To gain insight into the structure-activity relationships of ARQ, a series of chemically modified derivatives (1-6), the ARQ analogues (b-e) and the 2, 5-dihydroxy-p-bezoquinone analogues (f-h), were prepared, and cytotoxic acitivity against mouse leukemia P388 cells investigated. Results indicated that : 1) at least one hydroxy group or acetoxy group in the p-benzoquinone moiety is important to exhibit cytotoxicity; 2) in the p-benzoquinone moiety, a single methoxy group and/or one aceotxy group substitution showed more potent cytotoxicity than when two hydroxy groups are substituted (1); 3) the indole ring is important for the cytotoxicity of ARQ analogues; 4) the 1, 1-dimethly-2-propenyl group in the indole ring is not important for the cytotoxic activity of ARQ.
Asterriquinone (ARQ, 1a) 是青霉菌 (Aspergillus terreus IFO 6123) 的一种抗肿瘤代谢产物。为了深入了解 ARQ 的结构-活性关系,准备了一系列
化学修饰的衍
生物 (1-6),ARQ 同源物 (b-e) 和 2, 5-二羟基-p-
苯醌同源物 (f-h),并研究了其对小鼠白血病 P388 细胞的细胞毒性活性。结果表明:1)在 p-
苯醌部分至少需要一个羟基或乙酰
氧基才能表现出细胞毒性;2)在 p-
苯醌部分,单个甲
氧基和/或一个乙酰
氧基的取代比两个羟基取代时表现出更强的细胞毒性 (1);3)
吲哚环对 ARQ 同源物的细胞毒性具有重要作用;4)
吲哚环中的 1, 1-二
甲基-2-
丙烯基对 ARQ 的细胞毒性活性并不重要。