A Convergent Approach toward the C1−C11 Subunit of Phoslactomycins and Formal Synthesis of Phoslactomycin B
作者:Valérie Druais、Michael J. Hall、Camilla Corsi、Sebastian V. Wendeborn、Christophe Meyer、Janine Cossy
DOI:10.1021/ol8029142
日期:2009.2.19
phoslactomycins, and a formal synthesis of phoslactomycin B, were achieved by a convergent strategy involving the chelation-controlled addition of an alkynyl Grignard reagent to an α-alkoxy ketone. Catalytic enantioselective reductions of acetylenic ketones and a [2,3]-Wittig rearrangement were utilized as key steps to control the configuration of the C4, C5, and C9 stereocenters.
磷霉素的C1-C11亚基的制备以及磷霉素B的正式合成是通过一种收敛策略实现的,该策略涉及将炔基格氏试剂螯合控制地添加到α-烷氧基酮中。乙炔酮的催化对映选择性还原和[2,3] -Wittig重排被用作控制C4,C5和C9立体中心构型的关键步骤。