Diphenylmethyl (benzhydryl, Dpm) esters and ethers of amino acids and β-hydroxy-α-amino acids are prepared directly from N-unprotected L-α-amino acids using tris(diphenylmethyl) phosphate as alkylating agent. The novel H-Ser(Dpm)-ODpm and H-Thr(Dpm)-ODpm can be hydrolysed to the corresponding ethers H-Ser(Dpm)-OH and H-Thr(Dpm)-OH.
以
磷酸三(二苯基甲基)酯为烷化剂,从 N-无保护的 L-δ-
氨基酸直接制备
氨基酸和δ-羟基-δ-
氨基酸的二苯基甲基(苯甲基,Dpm)酯和醚。新型 H-Ser(Dpm)-ODpm和H-Thr(Dpm)-ODpm可
水解为相应的醚H-Ser(Dpm)-OH和H-Thr(Dpm)-OH。