Patent ID: 7915417

Claim:
The amino methylated 2-pyridinone corresponding to Formula VIa or a salt thereof: wherein R 2 and R 3 are independently hydrogen, hydrocarbyl, substituted hydrocarbyl or heterocyclo or, in combination with the nitrogen atom to which they are bonded, form a heterocyclo, provided at least one of R 2 and R 3 is other than hydrogen; R 4 and R 5 are independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or heterocyclo, provided at least one of R 4 and R 5 is other than hydrogen; X 5 is —C(H)—; X 33 is an electron pair or oxo; X 44 is hydrogen or hydrocarbyl; X 55 is —CO 2 X 555 ; and X 555 is hydrogen, a cation, hydrocarbyl, substituted hydrocarbyl, or heterocyclo.