주식회사 대희화학; LTD.;DAE HE CHEMICAL CO., LTD.;DAE HE CHEMICAL CO.
发明人:
MIN, YUN SIK,민연식
申请号:
KR1020100061199
公开号:
KR1020120000754A
申请日:
2010.06.28
申请国别(地区):
KR
年份:
2012
代理人:
摘要:
PURPOSE: A method for preparing donepezil hydrochloride crystalline type I is provided to ensure long term-efficient drug expression. CONSTITUTION: A method for preparing donepecil hydrochloride crystalline type I comprises: a step of dissolving donepezil glass base in an organic solvent to prepare a donepezil solution; a step of adding tartaric acid to the solution for precipitating donepezil tartrate; a step of reacting the donepezil tartrate with an inorganic alkaline solution; a step of concentrating an organic layer; a step of adding hydrochloric acid-methanol solution to the concentrate to form donepezil hydrochloride; and a step of crystallizing the donepezil hydrochloride.본 발명은 도네페질 염산염 결정형 I의 제조방법에 관한 것으로, 더욱 상세하게는 도네페질 유리염기(free base)로부터 도네페질 주석산염을 합성 경유시킨 후에, 도네페질 염산염 결정형 I로 전환시켜 제조하는 방법에 관한 것이다.