申请人:Fujisawa Pharmaceutical Co. Ltd.
公开号:US20030114488A1
公开(公告)日:2003-06-19
The present invention relates to processes for the preparation of &bgr;-alanine derivative shown by following formula (I):
1
wherein R
1
is amino protective group, and
R
2
is acyl group, or a salt thereof, which comprises, subjecting a compound of the formula (II):
2
wherein R
1
is the same as defined above, and
R
3
is protected carboxy, or a salt, to elimination reaction of carboxy protective group, and then to acylation reaction of amino group.
本发明涉及制备以下式(I)所示的β-丙氨酸衍生物的方法:其中R1是氨基保护基,R2是酰基,或其盐。该方法包括将式(II)的化合物:其中R1与上述定义相同,R3是保护羧基,或其盐,进行羧基保护基的消除反应,然后进行氨基基的酰化反应。