| abstract |
THERE ARE PROVIDED COMPOUNDS OF THE GENERAL FORMULA (1)(FORMULA 1)(WHEREIN R1 AND R2 WHICH MAY BE THE SAME OR DIFFERENT, EACH REPRESENTS A HYDROGEN ATOM, A HYDROXYL GROUP OR A GROUP- OP(O) (OH) (OR4) [ WHERE R4 REPRESENTS A HYDROGEN ATOM OR AN ALKYL (OPTIONALLY SUBSTITUTED BY A HYDROXYL, ALKOXY, CYCLIC ETHER OR CYCLOALKYL GROUP) ALKENYL, CYCLOALKYL, ARYL, ARALKYL OR AROYLALKYL GROUP ] WITH THE PROVISO THAT AT LEAST ONE OF R1 AND R2 REPRESENTS A GROUP- OP (0) (OH) (OR4); AND R3 REPRESENTS A HYDROGEN OR HALOGEN ATOM OR A METHYL GROUP AND SALTS THEREOF.THE NOVEL COMPOUNDS EXHIBIT INTERESTING ANTI- CANCER ACTIVITY. |