This disclosure relates to a process for the preparation of N-[2-n-butyl-3-4-[(3-dibutylamino)-propoxy]-benzoyl}-1-benzofuran-5-yl]-methane-sulfonamide of formula I
and its pharmaceutically acceptable salts, wherein one of the methylsulfonyl groups of the 2-n-butyl-3-[(di-n-butylamino-3-propoxy)-benzoyl]-5-bis-(methylsulfonamido)-benzofuran of formula II
is selectively cleaved and if desired, the resulting compound of formula I is transformed into its salt.
本公开涉及一种制备式I中的N-[2-正丁基-3-4-[(3-二丁基
氨基)丙氧基]-苯甲酰}-1-
苯并呋喃-5-基]-
甲烷磺酰胺及其药学上可接受的盐的过程,其中式II中的2-正丁基-3-[(二正丁基
氨基)-3-
丙氧基苯甲酰基]-5-双-(甲基磺酰基)-
苯并呋喃的甲基磺酰基之一被选择性地裂解,如有需要,式I的结果化合物被转化为其盐。