Facile synthesis of benzofuranone was achieved through a metal-free, one-pot intermolecular condensation between α-hydroxy aryl ketones and resorcinol derivatives. A library of 20 compounds with moderate to good overall yields was prepared. These compounds showed strong binding toward estrogen receptors along with good selectivity for ERβ (>190-fold over ERα). Anti-proliferative activity on DU-145, U-87, and MCF-7 cells gave inhibition IC50 values in the low μM range, which suggested the promising potential therapeutic applications of these new classes of benzofuranones.

中文翻译：

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通过无金属的一锅分子间缩合构建苯并呋喃酮文库，及其作为有效雌激素受体 β 调节剂的应用。

苯并呋喃酮的合成是通过 α-羟基芳基酮和间苯二酚衍生物之间的无金属、一锅式分子间缩合实现的。制备了一个由 20 种化合物组成的库，具有中等至良好的总产率。这些化合物显示出对雌激素受体的强结合以及对 ERβ 的良好选择性（超过 ERα 的 190 倍）。对 DU-145、U-87 和 MCF-7 细胞的抗增殖活性在低 μM 范围内提供抑制 IC50 值，这表明这些新类别的苯并呋喃酮具有有希望的潜在治疗应用。