Facile stereoselective synthesis of γ-substituted γ-amino acids from the corresponding α-amino acids
作者:Martin Smrcina、Pavel Majer、Eva Majerová、Tatiana A. Guerassina、Michael A. Eissenstat
DOI:10.1016/s0040-4020(97)00840-5
日期:1997.9
method for the synthesis of γ-substituted, γ-amino acids from α-amino acids was developed. The key step of the procedure is complete reduction of the keto functionality of α-amino acyl Meldrum's acid by sodium acetoxyborohydride. The resulting amino alkyl Meldrum's acid undergoes thermal decarboxylative ring closure to a 5-substituted pyrrolidinone which yields the corresponding γ-amino acid after basic
开发了一种从α-氨基酸合成γ-取代的γ-氨基酸的简便的立体选择方法。该方法的关键步骤是用乙酰氧基硼氢化钠完全还原α-氨基酰基麦德鲁姆酸的酮官能度。所得的氨基烷基麦德鲁姆酸经历热脱羧闭环成5-取代的吡咯烷酮,其在碱性水解后产生相应的γ-氨基酸。该过程的总产率为40%至65%。