A novel organocatalytic cascade approach for the synthesis of spiro-cyclopropyl oxindole derivatives has been developed. The methodology is based on asymmetric vinylogous Michael addition of 4-nitroisoxazole derivatives to N-Boc isatylidene malonates followed by intramolecular alkylation. Its remarkable stereocontrol, wide substrate scope, and scalability highlight this new developed strategy. Moreover
开发了一种用于合成螺-环丙基羟
吲哚衍
生物的新型有机催化级联方法。该方法基于
4-硝基异恶唑衍
生物与N -Boc 异亚
甲基丙二酸酯的不对称插烯迈克尔加成反应,然后进行分子内烷基化。其卓越的立体控制、广泛的基板范围和可扩展性突出了这一新开发的策略。此外,这项工作代表了用于合成手性 3,3'-环丙基羟
吲哚的插烯迈克尔引发闭环 (MIRC) 反应的第一个例子。