Patent ID: 9227945
Filing Date: 2016-01-05
CPC Classification: A61P,C07D

Claim Text:
1. A process for preparing a compound corresponding to formula (I) below: in which each of R wherein the process comprises at least one step during which a compound of formula (II): in which R represents a group chosen from: Z represents an atom chosen from O and S, is subjected to a purification step, this step comprising at least one filtration through a filtration support chosen from: a silica gel, a neutral, basic or acidic alumina gel, a microporous membrane, a resin grafted with metal-capturing groups, and fibers grafted with metal-capturing groups, and thereafter a step for deprotection of the amine of the phenothiazine ring of the compound of formula (II), wherein the deprotection step of compound (II) to produce compound (I) is achieved in a one-pot process.