Abstract: Disclosed herein are pyrido[2,3-d]pyrimidines having the structure wherein R1, and R2 are independently selected from nitro and amino; wherein R3 is selected from alkyl (C1-C10) and cycloalkyl (C3-C8); wherein R4 is selected from hydrogen, benzyl, alkyl (C1-C10), cycloalkyl (C3-C8), arylalkyl (C4-C8), and aryl (C3-C8); wherein R5 and R6 are independently selected from hydrogen, benzyl, alkyl (C1-C10), cycloalkyl (C3-C8), arylalkyl (C4-C14), and aryl (C3-C8); wherein R3 and R4 may form a ring; wherein R5 and R6 may form a ring or a heterocyclic structure; and wherein R5 and R6 are independently unsubstituted or substituted, wherein each substituent is independently selected from halogen, amino, alkyl (C1-C6), haloalkyl (C1-C6), alkoxy(C1-C6), alkylenedioxy, aryl, heteroaryl, and cycloalkyl (C3-C8). Also disclosed are methods for the preparation of compounds of Formula I and various intermediates. These compounds are useful as NAD+-dependent DNA ligase inhibitors.

Abstract: Compounds, compositions and methods are provided which are useful in the treatment of diseases through the modulation of potassium ion flux through voltage-dependent potassium channels. More particularly, the invention provides sulfonamides, and compositions and methods utilizing sulfonamides that are useful in the treatment of diseases by blocking potassium channels associated with the onset or recurrence of the indicated conditions. Exemplary diseases treatable with the compounds, compositions and methods of the invention include sickle cell disease and glaucoma.

Abstract: Compounds, compositions and methods are provided which are useful in the treatment of diseases through the modulation of potassium ion flux through voltage-dependent potassium channels. More particularly, the invention provides sulfonamides, and compositions and methods utilizing sulfonamides that are useful in the treatment of diseases by blocking potassium channels associated with the onset or recurrence of the indicated conditions. Exemplary diseases treatable with the compounds, compositions and methods of the invention include sickle cell disease and glaucoma.

Abstract: Compounds, compositions and methods are provided which are useful in the treatment of diseases through the modulation of potassium ion flux through voltage-dependent potassium channels. More particularly, the invention provides sulfone-containing prodrugs, and compositions and methods utilizing sulfone-containing prodrugs that are useful in the treatment of diseases by blocking potassium channels associated with the onset or recurrence of the indicated conditions. Exemplary diseases treatable with the compounds, compositions and methods of the invention include sickle cell disease and glaucoma.

Abstract: Compounds useful as potassium channel inhibitors and especially useful for the treatment of cardiac arrhythmias and cell proliferative disorders are described.