Biologically active lysine containing octapeptides
First Claim
1. A compound of the formula ##STR41## wherein A is an L, D or DL amino acid selected from the group consisting of tryptophan (Trp), its acetylated derivatives or a pharmaceutically acceptable acid addition salt thereof;
- B is an L, D or DL amino acid selected from the group consisting of threonine amide (Thr NH2), tyrosine amide (Tyr NH2) and tryptophan amide (Trp NH2);
X is L-phenylalanine (L-Phe) or L-tyrosine (L-Tyr);
Y is L-valine (L-Val) or L-threonine (L-Thr)Z is D-tryptophan (D-Trp); and
C" and C'"'"' are L or D-cysteine (Cys), α
-aminobutyric acid (Abu), aspartic acid (Asp) or lysine (Lys);
provided that where C'"'"' is Cys, C" is also Cys and where C'"'"' or C" are other than Cys, C" is different from C'"'"' and is other than Cys;
the connecting line between C" and C'"'"' signifies a bridge selected from the group consisting of carbon/carbon, carbon/sulfur, sulfur/sulfur and amide bridges; and
the pharmaceutically acceptable acid addition salts thereof.
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Accused Products
Abstract
Novel compositions of the formula ##STR1## wherein A represents an L, D or DL amino-acid selected from the group consisting of Ala, Val, Phe, p-Cl-Phe, Trp, Pro, Ser, Thr, Glu, Gly, Beta Ala, Abu, N-Me Ala, 5-F-Trp, 5-Br-Trp, 5-Cl-Trp, their acetylated derivatives or a pharmaceutically acceptable acid addition salt thereof;
B represents an L, D or DL amino acid amide selected from the group consisting of Thr NH2, Val NH2, Pro NH2, HO-Pro NH2, Ser NH2, Tyr NH2, Trp NH2, 5-F-Trp NH2, For-Trp NH2, Ala NH2, Gly NH2, Me Ala NH2 ;
X represents L-Phe or L-Tyr,
Y represents L-Thr or L-Val;
Z is L, D or DL-5-F-Trp, 5-Br-Trp, 5-Cl-Trp, 5-I-Trp or D-Trp; and
C" and C'"'"' represent L or D Cys, Abu, Asp or Lys; and the pharmaceutically acceptable acid addition salts thereof; are useful as agents for inhibiting the release of growth hormone, for the treatment of gastrointestinal disorders and for therapy of certain cancers and the management of diabetes. These biologically active octapeptides all possess a terminal amino acid amide at position 8 and are prepared by solid phase methods.
30 Citations
15 Claims
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1. A compound of the formula ##STR41## wherein A is an L, D or DL amino acid selected from the group consisting of tryptophan (Trp), its acetylated derivatives or a pharmaceutically acceptable acid addition salt thereof;
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B is an L, D or DL amino acid selected from the group consisting of threonine amide (Thr NH2), tyrosine amide (Tyr NH2) and tryptophan amide (Trp NH2); X is L-phenylalanine (L-Phe) or L-tyrosine (L-Tyr); Y is L-valine (L-Val) or L-threonine (L-Thr) Z is D-tryptophan (D-Trp); and C" and C'"'"' are L or D-cysteine (Cys), α
-aminobutyric acid (Abu), aspartic acid (Asp) or lysine (Lys);
provided that where C'"'"' is Cys, C" is also Cys and where C'"'"' or C" are other than Cys, C" is different from C'"'"' and is other than Cys;
the connecting line between C" and C'"'"' signifies a bridge selected from the group consisting of carbon/carbon, carbon/sulfur, sulfur/sulfur and amide bridges; and
the pharmaceutically acceptable acid addition salts thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15)
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- 10. An octapeptide (reduced form) of the formula
- space="preserve" listing-type="equation">A-C"-X-Z-Lys-Y-C'"'"'-B (I'"'"')
- View Dependent Claims (11)
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12. A compound which is:
space="preserve" listing-type="equation">D-Phe-Cys-Tyr-D-Trp-Lys-Val-Cys-Ser-NH.sub.2.
Specification