申请人:Murthy K.S. Keshava
公开号:US20060199855A1
公开(公告)日:2006-09-07
A process is provided for preparing pharmaceutical grade atorvastatin hemicalcium salt comprising:
(a) deesterifying,
wherein R is an ester protecting group to
(b) extracting R(R*,R*)-3 into an organic solvent or mixture of solvents,
(c) adding a base of formula NR
1
R
2
R
3
wherein R
1
, R
2
and R
3
are independently selected from H, substituted or non-substituted C1 to C7 alkyl, C6 to C9 aryl, C8 to C10 aralkyl or aminoalkyl to form atorvastatin base salt, (d) isolating by precipitation of the above atorvastatin base salt and purifying when necessary,
提供一种制备药用级阿托伐他汀盐的过程,包括:(a) 去酯化,其中R是一个酯保护基,(b) 将R(R*,R*)-3提取到有机溶剂或混合溶剂中,(c) 添加一个具有公式NR1R2R3的碱,其中R1、R2和R3分别选择自H、取代或未取代的C1到C7烷基、C6到C9芳基、C8到C10芳基烷基或氨基烷基,形成阿托伐他汀碱盐,(d) 通过沉淀分离上述阿托伐他汀碱盐,并在必要时进行纯化。