The disclosure describes selective and potent CDK 4 / 6 inhibitors that show advantageous inhibition of
cancer growth, even at low concentrations. A class of the CDK 4 / 6 inhibitors relates to substituted pyridopyrimidines compounds having a
fatty acid moiety, and are namely derivatives of
Palbociclib of general formula [2A], wherein R1 is
hydrogen,
aryl,
alkyl, alkoxy, cycloalkyl, or heterocyclyl; R2 is
hydrogen,
halogen,
alkyl, acyl, cycloalkyl, alkoxy, alkoxy
alkyl, haloalkyl, hydroxy alkyl, alkenyl, alkynyl,
nitrile, or nitro; R3 is
hydrogen,
halogen, alkyl, haloalkyl, hydroxy alkyl, or cycloalkyl; and n is an integer from 9 to 20. These compounds may be used as pharmaceutical compounds for anti-
cancer therapies, and are useful for the treatment, prevention and / or amelioration of
cancer.