Synthesis of Enantiopure (α<i>S</i>,β<i>S</i>)- or (α<i>R</i>,β<i>S</i>)-β-Amino Alcohols by Complete Regioselective Opening of Aminoepoxides by Organolithium Reagents LiAlH<sub>4</sub> or LiAlD<sub>4</sub>
作者:José M. Concellón、Pablo L. Bernad、Virginia del Solar、José Ramón Suárez、Santiago García-Granda、M. Rosario Díaz
DOI:10.1021/jo0606756
日期:2006.8.1
reaction of chiral (2R,1‘S)- or (2S,1‘S)-2-(1-aminoalkyl)epoxides, 1 or 2 with a variety of organolithium compounds to obtain the corresponding (αS,βS)- or (αR,βS)- β-amino alcohols in enantiopure form is reported. In both cases, the opening of the oxirane ring at C-3 proceeded with total regioselectivity. Moreover, the ring opening of aminoepoxides 1 or 2 by hydride (utilizing LiAlH4) to obtain the corresponding
手性(2 R,1 'S)-或(2 S,1 'S)-2-(1-氨基烷基)环氧化物1或2与多种有机锂化合物的反应,以获得相应的(αS,β小号) -或(α [R,β小号) - β-氨基在对映体纯形式的醇被报告。在这两种情况下,在C-3处的环氧乙烷环的打开都具有完全的区域选择性。此外,通过氢化物(利用LiAlH 4)使氨基环氧化物1或2开环,得到相应的(2 S,3 S)-或(2 R还描述了,3 S)-3-氨基烷基-2-醇。的反应1或2与LiAlD 4代替的LiAlH的4得到相应的(2小号,3小号) -或(2 - [R,3小号)-3-氨基-1- deuterioalkan -2-醇。