| abstract |
The present invention relates to compounds of formula (I): wherein: R 1 and R 2 represent independently of one another a hydrogen atom, an alkyl group of C 1 -C 7 optionally substituted by one or more alkoxy groups, R 3 represents one alkyl group of C1-C7; R 4 represents a hydrogen atom, one alkyl group of C 1 -C 4; Y represents one alkoxy group of C1-C4, one group -NRR ', -O (CH 2) n -C (O) -NRR' where R and R 'are as defined above and is an integer that can be 1 or 2; R '' represents one alkyl group of C1-C4; and R and R 'independently represent hydrogen, the C1-C4 alkyl group —CO-alkyl, or the —COOR group, wherein R' is as defined previously. Preparation procedure and therapeutic application. |