A Facile and Green Synthesis of a Naphthyridine Derivative: A Novel Hedgehog Pathway Modulator

A green and highly efficient synthesis of a naphthyridine derivative, a novel hedgehog pathway modulator, in high yield and purity from inexpensive starting materials is described. The key step involves an acid-promoted aryl amination reaction of aniline with naphthyridine halides.