| abstract |
The present invention relates to specific indolinone derivatives, namely the compounds of formula, in which R 1 represents an hydrogen atom or a group, and R 2 and R 3 each represent an hydrogen atom or R 2 and R 3 taken together represent a group, with the proviso that when R 1 represents an hydrogen atom R 2 and R 3 taken together represent a group, and to a process for their manufacture. |