The SAR of a new series of tetrahydrocarbazole derivatives is described: the appropriate decoration of this template led to the identification of a new class of NPY-1 antagonists showing good in vitro potency and a promising in vivo pharmacokinetic profile in rat. ... The synthesis and the SAR of new series of NPY-1 antagonists are reported. ... Neuropeptide Y (NPY) is a 36-amino acid peptide isolated from porcine brain in 1982 by Tatemoto et al. 1 NPY belongs to a ...