作者:W. H. Bunnelle、P. R. Singam、B. A. Narayanan、C. W. Bradshaw、J. S. Liou
DOI:10.1055/s-1997-1211
日期:1997.4
A concise, regiocontrolled route to isoxazoles, based on the condensation of an ester with a metallated imine, has been developed. The intermediate vinylogous amides react smoothly with hydroxylamine to provide, after dehydration, substituted isoxazoles. The method has been used for the multi-kilo scale preparation of ABT-418, a novel cholinergic channel activator.
已开发出一种简明的区域选择性合成异噁唑的路线,该方法基于酯与金属化亚胺的缩合。中间体连氨酰胺与羟胺反应顺利,经过脱水后,生成取代的异噁唑。该方法已用于ABT-418的多千克规模制备,ABT-418是一种新型的胆碱能通道激活剂。