申请人:——
公开号:US20020151721A1
公开(公告)日:2002-10-17
Novel optically active or racemic azethidine carboxylic acid derivatives (azethidine-2-carboxylic acid N-carboxyamino acid anhydrides) which are useful as drug intermediates and an industrially advantageous process for producing the same are provided. Namely, a process for obtaining azethidine-2-carboxylic acid N-carboxyamino acid anhydrides starting with azethidine-2-carboxylic acids is provided. Via the azethidine-2-carboxylic acid N-carboxyamino acid anhydrides according to the invention, azethidine derivatives having peptide bond, which are useful as drugs, can be obtained by an industrial and economic process without resorting deblocking reaction.
提供了一种新颖的光学活性或消旋性的氮杂环丙烷羧酸衍生物(氮杂环丙烷-2-羧酸N-羧氨基酸酐),可作为药物中间体,并提供了一种在工业上有优势的生产过程。具体来说,提供了一种从氮杂环丙烷-2-羧酸出发获得氮杂环丙烷-2-羧酸N-羧氨基酸酐的过程。通过本发明提供的氮杂环丙烷-2-羧酸N-羧氨基酸酐,可以通过一种工业化和经济化的过程获得具有肽键的氮杂环丙烷衍生物,这些衍生物可作为药物使用,而无需进行去保护基反应。