Abstract: New compounds which have potent V.sub.2 -vasopressin antagonistic activity are prepared by a 1,6-cyclization using peptide bond formation. The structures of the compounds are characterized by a Pas.sup.1,6 or Tas.sup.1,6 cyclized unit. Also a chiral synthesis of the optically pure Pas intermediates is described.
Type:
Grant
Filed:
April 28, 1987
Date of Patent:
July 26, 1988
Assignee:
Smithkline Beckman Corporation
Inventors:
James F. Callahan, William F. Huffman, Kenneth A. Newlander, Nelson C. F. Yim