Inventors:
Marta Zarandi - Metairie LA
Andrew V. Schally - Metairie LA
Assignee:
The Administrators of the Tulane Educational Fund - New Orleans LA
International Classification:
A61K 3800
C07K 710
C07K 700
Abstract:
Synthetic analogues of hGH-RH(1-29)NH. sub. 2 having substitutions of various amino acids and acylated at the N-terminus, and exhibiting prolonged antagonistic duration. Embodiments include analogues of the formula: ##STR1## wherein X is nil, H, Ac, IAc, BrProp, Ibu, Nac, 2-Nac, 1- or 2-Npt, 1- or 2-Npr or Aqc; R. sup. 1 is Tyr, His, Glu or Glt; R. sup. 2 is D-Arg, D-Cit, D-Har, D-Lys or D-Orn; R. sup. 3 is Asp, Ala or Gly; R. sup. 4 is Ala or Gly; R. sup. 5 is Ile, Ala or Gly; R. sup. 6 is Phe, Ala, Pro, Tpi, Nal or Phe(Y), in which Y is F, Cl, Br, NO. sub. 2, CH. sub. 3 or OCH. sub. 3 ; R. sup. 8 is Asn, Ser, Val, Ile, Ala, Abu, Nle, or Aib; R. sup. 11 is Arg, D-Arg or Cit; R. sup. 12 is Lys, D-Lys, Cit or Ala; R. sup. 15 is Gly, Ala, Abu or Gln; R. sup.