DERIVATIVES OF PITUITARY POSTERIOR LOBE HORMONES

摘要

Derivatives of pituitary posterior lobe hormones, more precisely new vasotocin derivatives, are disclosed. The new vasotocin derivatives are comprised by formula (I), wherein A = Mpa or Hmp, B = D-Tyr, D-Tyr(Et), D-Phe, D-Phe(p-Et) or D-Trp, C = Thr, Val or Hgn, D = Cys or alpha -Abu, E = Pro or a peptide bond, F = (a), wherein m = 0-6, n = 0-6, L = H, C00H, CO-NH2 or CH2-OH, K = H, (b) or a D- or L-amino acid residue with the proviso that L is not H when A is Mpa, C is Thr or Val and D is Cys. Further, pharmaceutical compositions including the new vasotocin derivatives and being preferably in a form suitable for intravenous, intranasal or intraintestinal administration, are described. The compositions are especially intended for use in the therapeutic treatment of excessive uterus muscle contractions.