CYCLIC GRF ANALOGS

• Main Authors: WYLIE WALKER VALE, JR, JEAN EDOUARD FREDERIC RIVIER, CATHERINE LAURE RIVIER
• Format: Patent
• Language: English
• Published: 25.04.1990
• Edition: 5
• Subjects: CHEMISTRY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PEPTIDES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

Synthetic peptides which stimulate the release of pituitary GH in animals, including humans, and are more resistant to enzymatic degradation in the body than hGRF having the sequence: (B)R1-R2-R3-Ala-Ile-Phe-Thr-R8-Ser- THETA 10-Arg-R12-R13-Leu-R15-Gln-Leu-R18-Ala-A rg-R21-R22-Leu-R24-R @5-Ile-R27-R28-R @9-Gln-Gln-Gly-Glu-R34-Asn-Gln-Glu-R38-R39-R40-Arg-R42-R43-R44 wherein R1 is Tyr, D-Tyr, Met, D-Met, Phe, D-Phe, pCl-Phe, Leu, His or D-His; B is H, CMe, NMe, desamino, Ac or For; R2 is Ala, D-Ala, NMA or D-NMA; R3 is Asp or D-Asp; R8 is Ser, Asn, Lys, Arg, Asp or Gln; R10 is Tyr, D-Tyr or Phe; R12 is Arg or Lys; R13 is Ile, Val, Leu or Ala; R15 is Gly, Ala or beta -Ala; R18 is Ser or Tyr; R21 is Lys, D-Lys, Arg or D-Arg; R22 is Leu, Ile, Ala or Val; R24 is Gln or His; R25 is cys, abu, asp, glu, orn, lys, dab or dap; R27 is Met, D-Met, Ala, Nle, Ile, Leu, Nva or Val; R28 is Asn or Ser; R29 is cys, abu, asp, glu, orn, lys, dab or dap; R34 is Ser or Arg; R38 is Arg or Gln; R39 is Gly or Arg; R40 is Ala or Ser; R42 is Phe or Ala; R43 is Asn or Arg; R44 is a natural amino acid, such as Leu or Val. C-terminal sequences of from 1 to 15 residues beginning at R44 and extending as far as up to R29 may be deleted. These peptides as well as their nontoxic salts may also be used diagnostically.