Process for the stereoselective preparation of (-)-halofenate and derivatives thereof
申请人:Zhu Yan
公开号:US20070072858A1
公开(公告)日:2007-03-29
The present invention provides a compounds the formula (IV):
and methods for producing an α-(phenoxy)phenylacetic acid compound of the formula:
wherein R
1
is a member selected from the group consisting of:
each R
2
is a member independently selected from the group consisting of (C
1
-C
4
)alkyl, halo, (C
1
-C
4
)haloalkyl, amino, (C
1
-C
4
)aminoalkyl, amido, (C
1
-C
4
)amidoalkyl, (C
1
-C
4
)sulfonylalkyl, (C
1
-C
4
)sulfamylalkyl, (C
1
-C
4
)alkoxy, (C
1
-C
4
)heteroalkyl, carboxy and nitro; the subscript n is 1 when R
1
has the formula (a) or (b) and 2 when R
1
has the formula (c) or (d); the subscript m is an integer of from 0 to 3; * indicates a carbon which is enriched in one stereoisomeric configuration; and the wavy line indicates the point of attachment of R
1
; and compounds
本发明提供了化合物的公式(IV):及其制备α-(苯氧基)苯乙酸化合物的方法:其中R1是从以下组成的成员中选择的:每个R2是独立从以下组成的组中选择的成员:(C1-C4)烷基,卤素,(C1-C4)卤代烷基,氨基,(C1-C4)氨基烷基,酰胺基,(C1-C4)酰胺基烷基,(C1-C4)磺酰基烷基,(C1-C4)磺酰胺基烷基,(C1-C4)烷氧基,(C1-C4)杂烷基,羧基和硝基;当R1具有公式(a)或(b)时,下标n为1,当R1具有公式(c)或(d)时,下标n为2;下标m为0至3的整数;*表示富含一种立体异构体的碳;波浪线表示R1的连接点;和化合物