The present invention relates to the process for the preparation of anhydrous Gabapentin of pharmaceutical grade from the Gabapentin acid addition salts. The process consists of neutralizing the said acid addition salts with an organic base in water to get an aqueous solution comprising of Gabapentin and amine acid addition salt dissolved in water. The process further comprises of a method to separate the Gabapentin and the amine acid addition salt from such an aqueous solution and to recover Gabapentin as an anhydrous Gabapentin form II.
本发明涉及一种从Gabapentin酸盐制备制药级无
水Gabapentin的过程。该过程包括使用有机碱在
水中中和所述酸盐加成盐,以得到包含Gabapentin和
氨基酸加成盐溶解在
水中的
水溶液。该过程进一步包括一种从这样的
水溶液中分离Gabapentin和
氨基酸加成盐并以无
水Gabapentin形式II回收Gabapentin的方法。