Total Syntheses of Cannabicyclol, Clusiacyclol A and B, Iso-Eriobrucinol A and B, and Eriobrucinol
作者:Hyun-Suk Yeom、Hui Li、Yu Tang、Richard P. Hsung
DOI:10.1021/ol401335u
日期:2013.6.21
Total syntheses of a series of chromane natural products that contain a cyclobutane ring are described. A unified theme In the strategy employed for all these syntheses Is an oxa-[3 + 3] annulation for constructing the chromane nucleus and a stepwise cationic [2 + 2] cycloaddition for the cyclobutane formation. More Importantly, the two reactions could be rendered in tandem, thereby providing an expeditious approach to this family of natural products.