Synthesis of a benzo[b]-1,5-naphthyridine derivative as a potential constrained NK1 receptor antagonist
作者:Giovanni Viti、Danilo Giannotti、Rossano Nannicini、Giuseppe Balacco、Vittorio Pestellini
DOI:10.1016/s0040-4039(00)78224-4
日期:1994.8
A short synthesis of a cyclic constrained analogue 1 of the potent Substance P antagonist (+/-) CP-96345 is described. The key feature is the formation of the benzo[b]-1,5-naphthyriandine system at the very last step of the synthesis throught an intramolecular arylation of an amine promoted by a strong base. If the tricyclic system was synthesized first, 2-methoxy benzylation of both the nitrogen atoms occurred.