Azabicyclo[3.1.0]hexane-1-ols as frameworks for the asymmetric synthesis of biologically active compounds
作者:Mouhamad Jida、Régis Guillot、Jean Ollivier
DOI:10.1016/j.tetlet.2007.10.003
日期:2007.12
obtained by Ti(IV)-mediated cyclopropanation of amino acid derivatives, constitute versatile, and unprecedented intermediates for the asymmetric synthesis of pharmacologically active products. Indeed, through selective rearrangement, these compounds undergo unusual ring cleavage to lead to pyrrolidinones. Fe(III)-promoted ring opening followed by basic dehydrohalogenation furnishes optically active dihydropyridinones
氮杂双环[3.1.0]己烷-1-醇很容易通过Ti(IV)介导的氨基酸衍生物环丙烷化反应获得,它是多用途且空前的中间体,可用于不对称合成药理活性产物。实际上,通过选择性重排,这些化合物经历不寻常的环断裂,从而导致吡咯烷酮。Fe(III)促进的开环,然后进行基本的脱卤化氢,提供了光学活性的二氢吡啶并酮,而Ce(IV)促进的开环则通过自由基过程提供了手性三环哌啶酮。