abstract |
The invention relates to a method for the preparation of 11- (4- [2- (2- hydroxyethoxy) ethyl] -1-piperazinyl] dibenzo [b, f ] -1, 4-thiazepine and pharmaceutically acceptable salts thereof comprising the reaction of 1- [2- (hydroxyethoxy) -ethyl] piperazine with dibenzo [b, f] [1, 4] thiazepin-11-ylamine. |