| 摘要 |
<p>Protected amino acid derivatives of general formula (I) wherein R1 represent hydrogen atom, and R2 may represent hydroxymethyl, 1-hydroxyethyl, 4-hydroxybenzyl, imidazolyl-2-methyl, benzyloxymethyl, 1-benzyloxyethyl, 4-benzyloxybenzyl, benzyloxycarbonylmethyl, 2-(benzyloxycarbonyl)ethyl, S-benzylthiomethyl, S-(diphenylmethyl)thiomethyl, 4-(benzyloxycarbamido)butyl, 3-guanidinopropyl, 3-(NG-toluenesulfonyl)guanidinopropyl, 3-(NG-nitro)guanidinopropyl, 3-[NG-(4-methoxy-2,3,6-trimethylbenzenesulfonyl)]-guanidinopropyl, N-(4,4'-dimethoxybenzhydryl)carboxamidomethyl, 2-[N-(4,4'-dimethoxybenzhydryl)carboxamido]ethyl, S-tert-butyldithiomethyl, 4-[2-(4-nitrophenylsulfonyl)ethoxycarbamido]-butyl, propyl, butyl, ethyl, 3-(benzyloxycarbamido)propyl, or 3-(tert-butoxycarbamido)propyl. Methods for the preparation of said derivatives are provided.</p> |
