A process for the preparation of Irbesartan of formula (I) using the step of,
reacting biphenyl derivative of formula (VIa)
wherein R represents a group selected from —CONH
2
or compound of formula
wherein X represents H or C
1-4
alkyl, preferably methyl;
or any other such group which can be converted to cyano group,
with 1-veleramido cyclopentane carboxylic acid of formula (V)
in the presence of an acid in an organic solvent to give biphenyl derivative of formula (VIIa)
wherein R has the same meaning as mentioned hereinabove.
使用以下步骤制备化合物Irbesartan (I)的方法,包括将公式(VIa)的
联苯衍
生物与公式(V)的1-维拉米多
环戊烷羧酸在有机溶剂中,在酸的存在下反应,其中R代表从—CONH2或公式中选择的一种基团,其中X代表H或C1-4烷基,优选甲基;或任何其他可以转化为
氰基的基团,得到公式(VIIa)的
联苯衍
生物,其中R具有与上述相同的含义。