| abstract |
A compound selected from those of formula (I): n wherein: n R 1 and R 2 , which may be identical or different, represent a group of formula U-V wherein U represents single bond, or alkylene which is optionally substituted and/or unsaturated, and V is as defined in the description, n G represents oxygen, or NR 3 wherein R 3 is as defined in the description, n X represents hydrogen, hydroxy, alkoxy, mercapto or alkylthio, Y represents hydrogen, or X+Y represents carbonyl, n X 1 represents hydrogen, hydroxy, alkoxy, mercapto or alkylthio, Y 1 represents hydrogen, or X 1 +Y 1 represents carbonyl, n R 4 , R 5 , and R 6 are as defined in the description, n its isomers, and pharmaceutically-acceptable acid or base addition salts thereof, and medicinal products containing the same are useful in the treatment of cancer. |