| 发明名称 |
METHOD FOR PREPARING N-PROTECTED (2S,3S)-3-ETHYLASPARTIC ACID DIALKYL ESTERS |
| 摘要 |
PCT No. PCT/EP91/00332 Sec. 371 Date Nov. 6, 1991 Sec. 102(e) Date Nov. 6, 1991 PCT Filed Feb. 22, 1991 PCT Pub. No. WO91/13861 PCT Pub. Date Sep. 19, 1991.The invention relates to a process for the preparation of N-protected dialkyl (2S,3S)-3-ethylaspartates or their salts from unpurified (2S,3S)-3-ethylaspartic acid obtainable by enzymatic amination of ethylfumaric acid. |
| 申请公布号 |
AU7301491(A) |
申请公布日期 |
1991.10.10 |
| 申请号 |
AU19910073014 |
申请日期 |
1991.02.22 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG |
发明人 |
ULRICH HEYWANG;HARRY SCHWARTZ;MICHAEL CASUTT |
| 分类号 |
C07C227/18;C07C229/24;C07K1/02;C07K5/06;C12P13/04 |
主分类号 |
C07C227/18 |
| 代理机构 |
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