| abstract |
The present invention relates to certain indolinone derivatives and pharmaceutically acceptable salts thereof, namely 3-Z- [1- (4- (N-((4-methyl-piperazin-1-yl) -methylcarbonyl) -N To the process for the preparation of -methyl-amino) -anilino) -1-phenyl-methylene] -6-methoxycarbonyl-2-indolinone and its monoethanesulfonate, new preparation steps and novel intermediates of the process It is about. |