Efficient Syntheses of New Chromone- and Chromanequinoline Hybrids and their Aza-analogs
作者:Abelmalek Bouraiou、Fabienne Berree、Sofiane Bouacida、Bertrand Carboni、Abdelmadjid Debache、Thierry Roynel、Ali Belfaitah
DOI:10.2174/157017811796064494
日期:2011.7.1
Some novel chromone- and chromanequinoline hybrids and their aza-analogs were synthesized from 2-chloro- 3-quinolinecarboxaldehydes as starting materials. The cyclization of 2-hydroxychalcones in the presence of AcONa yielded chroman-4-ones, while, in the typical AFO conditions, the 2-corresponding quinolyl-3-hydroxyflavonols were obtained. These approaches were extended to 2-aminochalcones, which delivered the 3-hydroxy-2,3-dihydroquinolin- 4(1H)-one via an epoxy-ketone and 2-quinolyl-2,3-dihydroquinoline-4(1H)-one under microwave irradiation in the presence of silica gel impregnated with indium (III) chloride.
以 2-Cloro- 3-quinoline Carboxaldehydes 为起始原料,合成了一些新的色酮和色烷喹啉杂化物及其氮杂类似物。在 AcONa 的存在下,2-羟基查耳酮环化生成了色满-4-酮,而在典型的 AFO 条件下,则生成了 2-对应的喹啉基-3-羟基黄酮醇。这些方法扩展到 2-氨基查耳酮,在微波辐照下,在氯化铟(III)浸渍的硅胶存在下,通过环氧酮生成 3-羟基-2,3-二氢喹啉-4(1H)-酮和 2-喹啉基-2,3-二氢喹啉-4(1H)-酮。