The invention relates to ten
amide arylpiperazine derivatives, their preparation method, and their use in the preparation of benign prostatic
hyperplasia treatment medicines. The preparation method of the
amide arylpiperazine derivatives comprises the following steps: reacting free alkali of 3-bromopropylamine
hydrobromide with di-tert-butyl
dicarbonate to obtain a colorless oily liquid, reacting the colorless oily liquid with o-methoxyphenylpiperazine to obtain a light yellow oily material, reacting the light yellow oily material with
trifluoroacetic acid to obtain a product, and reacting the product with N,N-diisopropylethylaine, 2-(7-azobenzotriazol)-N,N,N',N'-tetramethylformamidinium
hexafluorophosphate, and 5-indoleacetic acid or 3-indoleacetic acid or 3-indolepropionic acid or 3-
indolebutyric acid or 5-hydroxy-2-indoleacetic acid or 5-methoxy-2-indoleacetic acid or 1-methyl-3-indoleacetic acid or 6-bromo-2-indoleacetic acid or 5-chloro-2-indoleacetic acid or 7-nitro-2-indoleacetic acid to obtain final products. Experiments prove that the benign prostatic
hyperplasia resistance activities of eight compounds in the
amide arylpiperazine derivatives are stronger than a contrast
drug prazosin.