A new method for the asymmetric synthesis of a series of chiral amines including (S)-3-methyl-1-(2-piperidin-1-yl-phenyl)butylamine (2a) a key intermediate to prepare antidiabetic drug repaglinide by using Ellman’s reagent tert-butanesulfinamide. Diastereoselective addition of organometallic reagents to t-butanesulfinimines and followed by acidic and basic treatment. The obtained chiral amines were characterized by NMR, MS and other analytical data.
一种新的不对称合成方法,用于合成一系列手性胺,包括(S)-3-methyl-1-(2-piperidin-1-yl-phenyl)butylamine (2a),这是制备抗糖尿病药物
瑞格列奈的关键中间体,采用Ellman试剂叔
丁基亚砜胺。通过对叔
丁基亚砜胺进行立体选择性的有机
金属试剂加成,随后进行酸性和碱性处理。获得的手性胺通过核磁共振(NMR)、质谱(MS)及其他分析数据进行了表征。