| abstract |
Novel pyridopyrimidine-based compounds are found to be useful for the treatment or prevention of symptoms or manifestations associated with diseases or disorders affected by cytokine intracellular signaling, having the following formula: formula (I) wherein R1 is selected from a member of the group consisting of hydrogen, hydroxyl, methoxyl, N-OH, acylamino group, cyano group, sulfo, sulfonyl, sulfinyl, sulfhydryl (mercapto), sulfeno, sulfanilyl, sulfamyl, sulfamino, and phosphino, phosphinyl, phospho phosphono and -NRaRb, wherein each of Ra and Rb may be the same or different and each is selected from the group consisting of hydrogen and optionally substituted: C(1-20)alkyl, C(1-20)cycloalkyl, C(1-20)alkenyl, C(1-20)cycloalkenyl, C(1-20)alkynyl, aryl, heteroaryl, and heterocyclic group. R2 and R3 are independently selected from a member of the group consisting of halo, thio, oxo, C(1-20)alkyl, C(1-20)hydroxyalkyl, C(1-20)thioalkyl, C(1-20)alkylthio, C(1-20)alkylamino, C(1-20)alkylaminoalkyl, C(1-20)aminoalkyl, C(1-20)aminoalkoxyalkenyl, C(1-20)aminoalkoxyalkynyl, C(1-20)diaminoalkyl, C(1-20)triaminoalkyl, C(1-20)tetraaminoalkyl, C(1-20)aminotrialkoxyamino, C(1-20)alkylamido, C(1-20)alkylamidoalkyl, C(1-20)amidoalkyl, C(1-20)acetamidoalkyl, C(1-20)alkenyl, C(1-20)alkynyl, C(1-20)alkoxyl, C(1-20)alkoxyalkyl, C(1-20)dialkoxyalkyl, and NraRb. R4 may be hydrogen or an optionally substituted member of the group consisting of C(1-20)alkyl, C(1-20)cycloalkyl, C(1-20)alkenyl, C(1-20)cycloalkenyl, C(1-20)alkynyl, aryl, heteroaryl, and heterocyclic group. |