1263719-09-0Relevant articles and documents
Anti-depression of the raw material preparation method
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, (2018/07/15)
The present invention discloses an anti-depression drug duloxetine hydrochloride - process improvement and optimization, which belongs to the field of biological medicine. Comprises the following main features: a) used in the Mannich reaction in N - methyl benzylamine hydrochloride, without the use of dimethylamine hydrochloride, so that the follow-up steps in the dealkylation reaction effect is better, yield is higher; b) without using any expensive chiral catalyst or a phase transfer catalyst, to use with high stability and high catalytic performance of metal catalyst; c) the better solvent for crystallization and to the solvent method, to avoid the harm of the residual solvent for crystallization; d) splitting the chiral compound in the dealkylation after, adopts a unique recrystallization technology, will split the mixture after separation, purity and relatively easy to assemble and disassemble the luminosity (S)- N - methyl - 3 - (1 - naphthoxy) - 3 - (2 - thienyl) propylamine/tartrate, so that the resulting duloxetine hydrochloride product can achieve a better therapeutic effect. The process of the invention clear, simple and convenient operation, mild reaction conditions, low production cost, is extremely beneficial to industrial production.
