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公开(公告)号:US07442834B2
公开(公告)日:2008-10-28
申请号:US11457023
申请日:2006-07-12
申请人: Tianchun Liu , Youming Huang , Weirong Fan
发明人: Tianchun Liu , Youming Huang , Weirong Fan
IPC分类号: C07C229/00
CPC分类号: C07C227/40 , C07C227/20 , C07C227/38 , C07C229/28
摘要: This invention relates to an improved process for the preparation of substantially pure, stable anhydrous gabapentin. Thus, cyclohexane 1,1-diacetic acid monoamide is first treated with NaOH/NaClO to form 3,3-pentamethylenebutyrolactam, which is treated with aqueous HCl solution under reflux to provide gabapentin HCl salt, which is then neutralized with NaOH followed by a dehydration step to provide substantially pure, storage-stable, pharmaceutical grade gabapentin.
摘要翻译: 本发明涉及制备基本上纯的,稳定的无水加巴喷丁的改进方法。 因此,首先用NaOH / NaClO处理环己烷1,1-二乙酸单酰胺以形成3,3-五亚甲基丁内酰胺,其在回流下用HCl水溶液处理,得到加巴喷丁HCl盐,然后用NaOH中和脱水 提供基本上纯的储存稳定的药用级加巴喷丁。
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2.
公开(公告)号:US20070287861A1
公开(公告)日:2007-12-13
申请号:US11457023
申请日:2006-07-12
申请人: Tianchun Liu , Youming Huang , Weirong Fan
发明人: Tianchun Liu , Youming Huang , Weirong Fan
IPC分类号: C07C229/32
CPC分类号: C07C227/40 , C07C227/20 , C07C227/38 , C07C229/28
摘要: This invention relates to an improved process for the preparation of substantially pure, stable anhydrous gabapentin. Thus, cyclohexane 1,1-diacetic acid monoamide is first treated with NaOH/NaClO to form 3,3-pentamethylenebutyrolactam, which is treated with aqueous HCl solution under reflux to provide gabapentin HCl salt, which is then neutralized with NaOH followed by a dehydration step to provide substantially pure, storage-stable, pharmaceutical grade gabapentin.
摘要翻译: 本发明涉及制备基本上纯的,稳定的无水加巴喷丁的改进方法。 因此,首先用NaOH / NaClO处理环己烷1,1-二乙酸单酰胺以形成3,3-五亚甲基丁内酰胺,其在回流下用HCl水溶液处理,得到加巴喷丁HCl盐,然后用NaOH中和脱水 提供基本上纯的储存稳定的药用级加巴喷丁。
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