发明名称 |
Purification method of n-(1(s)-ethoxycarbonyl-3-phenylpropyl)-l-alanine |
摘要 |
The present invention is to provide a purification method of obtaining N-(1(S)-ethoxycarbonyl-3-phenylpropyl)-L-alanine of high quality in good yield with high productivity, which is accordingly suited for commercial scale application. An impurity-contaminated N-(1(S)-ethoxycarbonyl-3-phenylpropyl)-L-alanine is crystallized from a mixed solvent of alcohol and water in a volume ratio of alcohol/water being 1 to 20 to remove a contaminating impurity into a mother liquor and give crystals of N-(1(S)-ethoxycarbonyl-3-phenylpropyl)-L-alanine. |
申请公布号 |
US2003162991(A1) |
申请公布日期 |
2003.08.28 |
申请号 |
US20030311060 |
申请日期 |
2003.04.08 |
申请人 |
MATSUMOTO AKIRA;NOMURA MICHIO;KOGAME YOSHIKAZU;UEDA YASUYOSHI |
发明人 |
MATSUMOTO AKIRA;NOMURA MICHIO;KOGAME YOSHIKAZU;UEDA YASUYOSHI |
分类号 |
C07C227/42;C07C229/34;C07C229/36;(IPC1-7):C07C229/38 |
主分类号 |
C07C227/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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