1,2-Asymmetric Induction in the Intramolecular [2+2] Cycloadditions of Keteniminium Salts. Enantioselective Syntheses of (−)-Dihydroactinidiolide and (−)-Anastrephin
作者:Osamu Irie、Kozo Shishido
DOI:10.1246/cl.1995.53
日期:1995.1
1,2-Asymmetric induction in the intramolecular [2+2] cycloadditions of the keteniminium salts resulted in the preferential formation of optically pure bicyclo[4.2.0]octan-7-ones (13a,b). These cycloadducts, 13a and 13b, were successfully converted into the key intermediates of (−)-dihydroactinidiolide and (−)-anastrephin, respectively.
keteniminium 盐的分子内 [2+2] 环加成中的 1,2-不对称诱导导致优先形成光学纯的双环 [4.2.0]octan-7-ones (13a,b)。这些环加合物 13a 和 13b 分别成功转化为 (-)-二氢actinidiolide 和 (-)-anastrephin 的关键中间体。