title: Synthesis of analogs of the serum thymic nonapeptide, "facteur thymique serique" (FTS). Part I.
abstract: Analogs of FTS (Facteur Thymique Sérique), less than :formula: (see text), a circulating thymic factor, were prepared by replacing the amino acid residues in positions 1, 2, 8 and 9, or by shortening the nonapeptide chain at the N- or C-terminal end. These peptides were synthesized by two different schemes using the conventional synthesis in solution.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D010446:Peptide Fragments; D013935:Thymic Factor, Circulating / Q000031:analogs & derivatives / Q000138:chemical synthesis* / Q000502:physiology; D013951:Thymus Hormones / Q000138:chemical synthesis*
chemical_list: D000596:Amino Acids; D010446:Peptide Fragments; D013951:Thymus Hormones; D013935:Thymic Factor, Circulating