| abstract |
Cyclophosphamides possessing anti-tumor activity and having the formula <IMAGE> and salts thereof; wherein R is lower alkyl, aryl, aryl-lower alkyl or a nitrogen, sulfur or oxygen containing heterocyclic or heterocyclic lower alkyl, and R' is hydrogen, hydroxy or OOH with the proviso that when R' is hydrogen, R is other than methyl or phenyl and when R' is hydroxy, R is other than methyl. |