Process for the preparation of arylethanolamine derivatives having an anti-obesity and anti-diabetic properties
申请人:——
公开号:US20020198220A1
公开(公告)日:2002-12-26
A process for the preparation of a compound of Formula (IA) or a pharmaceutically acceptable salt thereof: wherein R
1
is an aryl, pyridyl, thiazolyl, phenoxymethyl or pyrimidyl group, optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxy, C
1-6
alkoxy, C
1-6
alkyl, hydroxymethyl, tifluoromethyl, —NR
6
R
6
, and —NHSO
2
R
6
, where each R
6
is independently hydrogen or C
1-4
alkyl; R
2
is hydrogen or C
1-6
alkyl; R
3
is CO
2
R
7
where R
7
is hydrogen or C
1-6
alkyl; R
4
and R
5
are independently hydrogen, C
1-6
alkyl or —CO
2
C
1-6
alkyl; and Y is N or CH comprising the step of preparing a diamide of Formula (II) or a pharmaceutically acceptable salt thereof: wherein R
1
is an aryl, pyridyl, thiazolyl, phenoxymethyl or pyrimidyl group, optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxy, C
1-6
alkoxy, C
1-6
alkyl, hydroxymethyl, trifluoromethyl, —NR
6
R
6
, and —NHSO
2
R
6
, where each R
6
is independently hydrogen or C
1-4
alkyl; R
2
is hydrogen or C
1-6
alkyl; R
3
is CO
2
R
7
where R
7
is C
1-6
alkyl; R
4
and R
5
are independently hydrogen, C
1-6
alkyl, —CO
2
C
1-6
alkyl; and Y is N or CH.
制备公式(IA)化合物或其药学上可接受的盐的方法:其中R1是芳基、吡啶基、噻唑基、苯氧甲基或嘧啶基,可选择地被一种或多种取代基所取代,所述取代基选择自卤素、羟基、C1-6烷氧基、C1-6烷基、羟甲基、三氟甲基、-NR6R6和-NHSO2R6,其中每个R6独立地是氢或C1-4烷基;R2是氢或C1-6烷基;R3是CO2R7,其中R7是氢或C1-6烷基;R4和R5独立地是氢、C1-6烷基或-CO2C1-6烷基;以及Y是N或CH,包括制备公式(II)的二酰胺或其药学上可接受的盐的步骤:其中R1是芳基、吡啶基、噻唑基、苯氧甲基或嘧啶基,可选择地被一种或多种取代基所取代,所述取代基选择自卤素、羟基、C1-6烷氧基、C1-6烷基、羟甲基、三氟甲基、-NR6R6和-NHSO2R6,其中每个R6独立地是氢或C1-4烷基;R2是氢或C1-6烷基;R3是CO2R7,其中R7是C1-6烷基;R4和R5独立地是氢、C1-6烷基或-CO2C1-6烷基;以及Y是N或CH。