Process for the preparation of compounds of formula (IV):
wherein R
1
, R
2
, R
3
and R
4
, which may be identical or different, each represent a hydrogen atom, a linear or branched (C
1
-C
6
)alkyl group, a linear or branched (C
1
-C
6
)alkoxy group, a fluorine atom, a chlorine atom, a protected amine group, a protected hydroxyl group, an alkoxycarbonyl group in which the alkoxy group is linear or branched (C
1
-C
6
), or a CF
3
group, or R
1
═R
4
═H and R
2
and R
3
together with the carbon atoms carrying them form a 1,3-dioxolane group,
R
5
represents a saturated or unsaturated, linear or branched (C
1
-C
6
)alkyl group, a linear or branched (C
1
-C
6
)hydroxyalkyl group in which the hydroxyl function is protected, or a CO
2
R
7
group in which R
7
is a linear or branched (C
1
-C
6
)alkyl group,
R
6
represents a cyano group or a CO
2
R
8
group in which R
8
is a linear or branched (C
1
-C
6
)-alkyl group.
Application in the synthesis of ivabradine, addition salts thereof with a pharmaceutically acceptable acid and hydrates thereof.
制备式(IV)化合物的过程:
其中R1,R2,R3和R4可以相同也可以不同,分别表示氢原子,线性或支链(C1-C6)烷基,线性或支链(C1-C6)烷氧基,
氟原子,
氯原子,保护胺基,保护羟基,其中烷氧基是线性或支链的(C1-C6)烷氧基,或
CF3基团,或R1═R4═H,而R2和R3与携带它们的碳原子形成1,3-二氧杂环烷基;
R5表示饱和或不饱和的线性或支链(C1-C6)烷基,线性或支链(C1-C6)羟基烷基,其中羟基功能被保护,或CO2R7基团,其中R7是线性或支链(C1-C6)烷基,
R6表示
氰基或CO2R8基团,其中R8是线性或支链(C1-C6)烷基。
应用于
伊伐布雷定的合成,以及其与药用酸的加合物和
水合物的制备。