| 发明名称 |
PREPARATION OF 9-HYDROXY-3-(2-HYDROXYETHYL)-2-METHYL-4H-PYRIDO[1,2-A]PYRIMIDIN-4-ONE AND CRYSTALLS THEREOF |
| 摘要 |
<p>The present invention concerns a process for preparing crystalline 3-(2-chloro-ethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one substantially free of 2-acetylbutyrolactone.</p> |
| 申请公布号 |
EP1791839(B1) |
申请公布日期 |
2015.06.10 |
| 申请号 |
EP20050784716 |
申请日期 |
2005.09.07 |
| 申请人 |
JANSSEN PHARMACEUTICA NV |
发明人 |
VREYSEN, EDUARD JOZEF CONSTANTIA;VAN DUN, JOANNES PETRUS;AELTERMAN, WIM ALBERT ALEX |
| 分类号 |
C07D471/04 |
主分类号 |
C07D471/04 |
| 代理机构 |
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