Synthesis of substituted (S)-2-aminotetralins via ring-opening of aziridines prepared from l-aspartic acid β-tert-butyl ester
作者:Jon Erik Aaseng、Odd R. Gautun
DOI:10.1016/j.tet.2010.09.025
日期:2010.11
paper describes the total synthesis of the hydrochloride salts of (2S)-2-amino-7-methoxytetralin (21-HCl) and (2S)-2-amino-6-fluoro-7-methoxytetralin (ST1214), from a common enantiomerically pure aziridine 4b, which was available from l-aspartic acid β-tert-butyl ester. The synthesis of 21-HCl and ST1214 proceeded in nine steps and 5 and 6% overall yields, respectively. Key steps are the regioselective
本文描述(2的盐酸盐的全合成小号)-2-氨基-7- methoxytetralin(21 -盐酸)和(2小号)-2-氨基-6-氟-7- methoxytetralin(ST1214)中,从常见的对映体纯的氮丙啶4b,可从1-天冬氨酸β-叔丁酯购得。21 - HCl和ST1214的合成分九步进行,总收率分别为5和6%。关键步骤是使用ArMgBr / CuBr·SMe 2对4b进行区域选择性开环分子内Friedel-Crafts环化提供α-四氢萘酮。在后一反应中形成取代的萘作为副产物。