Chemoenzymatic synthesis of (S)-2-cyanopiperidine, a key intermediate in the route to (S)-pipecolic acid and 2-substituted piperidine alkaloids
作者:Serge Nazabadioko、Ramón J Pérez、Rosario Brieva、Vicente Gotor
DOI:10.1016/s0957-4166(98)00140-2
日期:1998.5
preparation of (S)-2-cyanopiperidine 4 provides a new access to 2-substituted piperidines. This synthesis is based on an enantioselective (R)-oxynitrilase-catalyzed reaction for the preparation of (R)-(+)-6-bromo-2-hydroxyhexanenitrile 1 and the subsequent cyclization of this compound to yield the piperidine ring. The utilization of 4 as the starting material for the synthesis of (S)-2-aminomethylpiperidine
(S)-2-氰基哌啶4的制备为2-取代的哌啶提供了新的途径。该合成基于对映选择性(R)-氧硝腈酶催化的反应,该反应用于制备(R)-(+)-6-溴-2-羟基己腈1,随后将该化合物环化以产生哌啶环。还描述了使用4作为起始原料来合成(S)-2-氨基甲基哌啶6,(R)-(-)-亚氨酸10和(S)-(-)-哌酸13。