ESTERS

摘要

The present invention concerns novel compounds having the general formula I wherein R1. R2 and R3 are selected from the group consisting of hydrogen or lower alkyl having 1-4 carbon atoms, wherein R2 and R3 together with the N atom can also form a ring having 2-5 carbon atoms and wherein n is 0, 1 or 2, and pharmaceutically acceptable salts thereof. The compounds according to the invention are useful as anticancer agents.