Stereoselective synthesis of fluorine-containing analogues of anti-bacterial sanfetrinem and LK-157
作者:Barbara Mohar、Michel Stephan、Uroš Urleb
DOI:10.1016/j.tet.2010.03.104
日期:2010.6
The synthesis of (1′S,3R,4R)-4-acetoxy-3-(1′-trimethylsilyloxy-2′,2′,2′-trifluoroethyl)-2-azetidinone (10) precursor of modified carbapenems is described relying upon [Ru(C6Me6)(S,S)–(CH2)5NSO2DPEN]-catalyzed asymmetric transfer hydrogenation under dynamic kinetic resolution using HCO2H–Et3N. This fluorine-containing precursor yielded the targeted trinems 1 and 2 via a stereoselective key step condensation
改性碳青霉烯的(1 'S,3 R,4 R)-4-乙酰氧基-3-(1'-三甲基甲硅烷基氧基-2',2',2'-三氟乙基)-2-氮杂环丁酮(10)的合成为的描述依赖于[Ru(C 6 Me 6)(S,S)-(CH 2)5 NSO 2 DPEN]在动态动力学拆分下使用HCO 2 H-Et 3 N催化的不对称转移氢化反应。目标trinems 1和2通过与锂立体选择性关键步骤缩合(小号)-6-甲氧基-环己酸。