Spicamycin derivatives and their use as anticancer agents

摘要

Spicamycin derivative represented by the formula (I) or a salt thereof: <IMAGE> wherein R represents specific diverse substituents, for example, a linear alkadienyl having from 11 to 13 carbon atoms, and R1 and R2 respectively represent H or OH. Examples of specific compounds are 6-[4'-N-(N'-trans,trans 2,4-tridecadienoylglycyl)spicaminyl-amino]purine, and 6-[4'-N-(N'-trans,trans-2,4 dodecadienyoly glycyl) spicaminyl-amino]purine. Comopunds according to this invention are useful as a pharmaceutical for inhibition of a tumor, for example, human colon cancer.