Intermediates for preparing 1,6-dicarba-vasopressin compounds

摘要

New compounds which have potent V2-vasopressin antagonistic activity are prepared by a 1,6-cyclization using peptide bond formation. The structures of the compounds are characterized by the Pas1,6 or Tas1,6 cyclized unit. Also a chiral synthesis of the optically pure Pas intermediates is described.