Syntheses and nuclear magnetic resonance studies of some sterically hindered methylenedihydroanthracenes bearing methyl groups in the 1,8-aryl or methylene positions
The present invention encompasses compounds of general formula (1),
wherein
A, W, X, Y, Z, Ra, Rb, Rc, R1 and R3 are defined as in claim
1
, which are suitable for the treatment of diseases characterised by excessive or abnormal cell proliferation, and the use thereof for preparing a pharmaceutical composition having the above-mentioned properties.