Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula V, wherein: Y is hydrogen or lower alkyl;and X is a radical of the formula -O-R, wherein R is: N,N-di(hydroxy lower alkyl)amino lower alkyl, or tri-lower alkoxy silyl lower alkyl, or cyclo lower alkyl, or halo substituted lower alkoxy lower alkyl, or tetrahydro pyranyl, or carboethoxy lower alkyl, or 1-lower alkyl pyrroli...

Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula IIIa, IIIa wherein: Y is hydrogen or lower alkyl

"NEW 6-SUBSTITUTED MITOMYCIN ANALOGS" Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula IV, IV wherein: Y is hydrogen or lower alkyl

Compounds of the formula, II, wherein: Y is hydrogen or lower alkyl