发明名称 |
INTERMEDIATE OF CILASTATIN AND PREPARATION METHOD THEREOF |
摘要 |
Disclosed is a method for preparing 7-halo-2-oxoheptylate, an intermediate of cilastatin. The main steps are as follows: A. Addition reaction, in which 6-halo-hexanal is reacted with a cyanide to obtain 7-halo-±-hydroxyl-heptonitrile; B. Hydrolysis reaction, in which 7-halo-±-hydroxyl-heptonitrile is converted to 7-halo-±-hydroxyl-heptylic acid; C. Esterification reaction, in which 7-halo-±-hydroxyl-heptylic acid is converted to 7-halo-±-hydroxyl-heptylate; and D. Oxidation reaction, in which 7-halo-±-hydroxyl-heptylate is converted to 7-halo-2-oxoheptylate. 7-halo-±-hydroxyl-heptylic acid or ester thereof, which is a new intermediate for synthesizing 7-halo-2-oxoheptylate or cilastatin, and a method for synthesizing cilastatin are also disclosed. The methods of the invention are suitable for commercial production because of their simple process and mild reaction condition. |
申请公布号 |
EP2394979(A1) |
申请公布日期 |
2011.12.14 |
申请号 |
EP20100738218 |
申请日期 |
2010.02.08 |
申请人 |
ZHEJIANG HISUN PHARMACEUTICAL CO. LTD. |
发明人 |
TANG, HE;YUAN, WENQIU;FU, JIA |
分类号 |
C07C69/716;C07C59/115;C07C67/08;C07C67/313;C07C69/675;C07C319/14;C07C323/59 |
主分类号 |
C07C69/716 |
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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