作者:Young-Sun Do、Ruiying Sun、Hee Jin Kim、Jung Eun Yeo、Sung-Hee Bae、Sangho Koo
DOI:10.1021/jo802064c
日期:2009.1.16
furnished versatile dihydrotropones 6. Maintaining Z-configuration in the oxidative ring-opening products 3 is crucial for the success of the ring-expansion strategy. Dihydrotropones 6 are ripe for further elaborations such as oxidation to tropones 8 and Diels−Alder reaction with the Danishefsky′s diene 10 to afford polycyclic compounds 12.
扩环方案,包括将各种烯醇盐亲核试剂1,2-加成至6-三甲基甲硅烷氧基-2-环己烯-1-酮(1)和NaIO 4促进所得二醇2的氧化开环,然后进行分子内的Knoevenagel缩合,提供了多用途的二氢萘酮6。保持氧化性开环产物3中的Z构型对于扩环策略的成功至关重要。二氢萘酮6已经成熟,可以进行进一步的精制,例如氧化为对苯二酚8以及与Danishefsky's diene 10的Diels-Alder反应,得到多环化合物12。