| 摘要 |
A process for amino acid derivatives shown by the below general formula (I): (wherein R<1 >means a hydrogen atom or a straight chain or branched chain alkyl group with 1-5 carbon atoms.) having an object to provide a process of the amino acid derivatives of the formula (I) and their synthetic intermediate, t-butoxycarbonylamino-ethylamine, whereby it requires no tedious procedure and is also good in yield, and its application to a mass production is easy, and to provide novel amino acid derivatives of the formula (IV), their synthetic intermediates, and a process thereof, characterized in that it comprises a step to obtain the amino acid derivatives shown by the general formula (I) by hydrolysis of compounds shown by the below formula (II): (wherein R<1 >has the same meaning as described above, and R<2 >means a straight chain or branched chain alkyl group with 1-4 carbon atoms.) as well as amino acid derivatives shown by the general formula (IV): (wherein R<1 >means a hydrogen atom or a straight chain or branched chain alkyl group with 1-5 carbon atoms, and n means any one of integers 1-11.), and a process for the amino acid derivative, characterized in that it comprises a reduction step of benzyloxycarbonyl-omega-amino acid derivatives.
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