An atom-economic N-to-C-directed solid-phasepeptidesynthesis is reported that uses benzyl (Bn) or (benzhydryl-carbamoyl)-methyl (BcM) esters of amino acids as the building blocks, which facilitate efficient hydrazinolysis, convenient conversion to acyl azide, and robust amidation with the next amino acid ester. This method is free of coupling reagents and free of protection on the side-chain OH,
据报道,一种原子经济的 N 到 C 定向的固相肽合成,使用氨基酸的苄基 (Bn) 或 (二苯甲基-氨基甲酰基)-甲基 (BcM) 酯作为构建单元,促进高效肼解,方便转化为酰基叠氮化物,并与下一个氨基酸酯进行稳健的酰胺化。该方法无需偶联试剂,对侧链OH、CO 2 H、CONH2等无保护,因此与基于BOC或Fmoc的C-to-N-相比,原子经济性显着提高定向方法。