First total synthesis of modiolide A, based on the whole-cell yeast-catalyzed asymmetric reduction of a propargyl ketone
作者:Masaaki Matsuda、Takahiro Yamazaki、Ken-ichi Fuhshuku、Takeshi Sugai
DOI:10.1016/j.tet.2007.06.038
日期:2007.9
While the first total synthesis of modiolide A (1a), a 10-membered ring lactone with a marine-origin was achieved, an important chiral building block for constructing the chirality at C-4 in 1a, (S)-6-[(4-methoxybenzyl)oxy]-1-trimethylsilyl-1-hexyn-3-ol (3a) was obtained in as high as 96.1% ee. Asymmetric reduction of a silylated propargyl ketone (5) mediated by whole-cell of Pichia minuta IAM 12215
虽然首次合成了乙二醇单酸酯(A)(1a),它是具有海洋起源的10元环内酯,但它是构建1a(S)-6-[(获得高达96.1%ee的4-甲氧基苄基)氧基] -1-三甲基甲硅烷基-1-己炔-3-醇(3a)。建立了由毕赤酵母IAM 12215的全细胞介导的甲硅烷基化的炔丙基酮(5)的不对称还原。该酵母介导的还原反应还可用于提供立体化学纯的(3 S,5 R)-5-[(4-甲氧基苄基)氧基] -1-三甲基甲硅烷基-1-己炔-3-醇(15)是相关的10元内酯(tuckolide)(16)的合成中间体。