abstract |
Cyclophosphamide analogs are provided of general formula (II), wherein R?1 and R2¿ are each (C¿2?-C6)alkyl, substituted with a leaving group such as halo or alkylsulfonyl, R?3 and R4¿ are the same as R?1 and R2¿ or are H and Ar is a heteroaromatic ring and the pharmaceutically acceptable salts thereof. |