申请人:H. Lundbeck A/S
公开号:US20030092761A1
公开(公告)日:2003-05-15
The invention relates to a method for the preparation of citalopram comprising reaction of a compound of formula II
1
with a compound having the formula
2
wherein R is halogen or —O—SO
2
-X, wherein X is alkyl, alkenyl, alkynyl or optionally alkyl substituted aryl or aralkyl, and R
1
is dimethylamino, halogen, —O—SO
2
-X wherein X is as defined above, provided that R is not halogen when R
1
is dimethylamino;
and if R
1
is dimethylamino followed by isolation of citalopram base or a pharmaceutically acceptable acid addition salt thereof,
and if R
1
is halogen or —O—SO
2
-X, wherein X is as defined above, followed by conversion of the resulting compound of formula
3
wherein R
2
is halogen or a group of formula —O—SO
2
-X wherein X is as defined above to citalopram, followed by isolation of citalopram base or a pharmaceutically acceptable acid addition salt thereof.
该发明涉及一种制备西酞普兰的方法,包括将式II1的化合物与具有式2的化合物反应,其中R是卤素或—O—SO2-X,其中X是烷基、烯基、炔基或可选地被烷基取代的芳基或芳基烷基,R1是二甲基氨基、卤素、—O—SO2-X,其中X如上定义,前提是当R1是二甲基氨基时,R不是卤素;如果R1是二甲基氨基,则随后分离西酞普兰碱或其药学上可接受的酸盐,如果R1是卤素或—O—SO2-X,其中X如上定义,则随后将得到的式3的化合物转化为西酞普兰,其中R2是卤素或式—O—SO2-X的基团,其中X如上定义,随后分离西酞普兰碱或其药学上可接受的酸盐。