通过3-芳基苯并呋喃的C 2-官能化产生了一个新的化学空间。3-芳基苯并呋喃与仲胺和甲醛的曼尼希反应可将氨基甲基单元安装在苯并呋喃的C 2位。由Vilsmeier-Haack的3-芳基苯并呋喃甲酰化作用在C 2位引入的甲酰基被用作三组分Kabachnik-Fields与各种胺和亚磷酸三乙酯反应的反应伙伴,从而得到各种氨基甲基膦酸酯。此外,几种苯并[ d ]恶唑和吡咯并[1,2- a通过使用甲酰基制备]喹喔啉。对合成化合物的生物学筛选显示,带有吡咯并[1,2- a ]喹喔啉部分(5b)的苯并呋喃最能抑制人类血液癌细胞的活力,但不能抑制实体瘤细胞的活力。Caspase活性测定,膜联蛋白V阳性细胞分析和蛋白质印迹分析表明,5b诱导的人淋巴瘤U937细胞死亡可能是由于其具有通过抑制ERK激活来诱导血癌细胞caspase依赖性凋亡而导致的。
Lewis acidic nature of boron trichloride (BCl3) to coordinate to the carbonyl functionality was exploited for the synthesis of benzofurans via dehydrative cyclization. This mild and efficient procedure allowed for facile access to a number Of highly Substituted benzofurans in a regioselective manner. The Structural requirement for the successful cyclodehydration was examined in the cases, where competitive demethylation could occur. (C) 2008 Elsevier Ltd. All rights reserved.