Microwave‐Assisted, Asymmetric Synthesis of 3‐Amino‐2,3‐Dihydrobenzofuran Flavonoid Derivatives from Chalcones
作者:Travis R. Helgren、Lianyan L. Xu、Daniel Sotelo、Yash R. Mehta、Melissa A. Korkmaz、Ivan Pavlinov、Leslie N. Aldrich
DOI:10.1002/chem.201705984
日期:2018.3.26
utilizes microwave‐assisted organic synthesis to rapidly generate analogues has been developed. The route begins with an acid‐catalyzed, microwave‐assisted aldol condensation to generate chalcone intermediates, followed by a Corey–Bakshi–Shibata reduction and subsequent Sharpless asymmetric epoxidation to access stereoisomeric epoxyalcohols. The final step is a one‐pot, microwave‐assisted, regioselective
已开发出利用微波辅助有机合成快速生成类似物的3-氨基-2-3,2-二氢苯并呋喃的合成途径。该路线以酸催化,微波辅助的羟醛缩合反应生成查尔酮中间体为起点,然后进行Corey-Bakshi-Shibata还原反应,随后进行Sharpless不对称环氧化,得到立体异构的环氧醇。最后一步是用多种胺进行单锅,微波辅助,区域选择性,酸催化的环氧化物开环反应,然后进行分子内亲核芳族取代反应,生成3-氨基-2,3-二氢苯并呋喃。该途径为这些类黄酮支架的立体化学和结构上多样化的类似物提供了现成的途径。此外,还合成了一个试点库,