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US 5,677,419 AGranted
Cyclic vasoactive peptide analogs
AssigneeHoffmann-La Roche Inc.
InventorsDavid Robert Bolin, Margaret O'Donnell
Life of this patent
Estimating the term…
Abstract
Analogs of porcine Vasoactive Intestinal Peptide are disclosed. The analogs have been cyclized by the covalent attachment, via an amide bond, of the side-chain carboxy terminus of one amino acid in the peptide chain to the side-chain amino terminus of another amino acid in the peptide chain. The claimed compounds are useful for the treatment of asthma.
Claims32
A cyclic vasoactive intestinal peptide analog of the formula:
- ##STR29## wherein R.sub.1 is His, N-CH.sub.3 -Ala;
- R.sub.2 is Ser or Ala;
- R.sub.6 is ##STR30## where Q is C.sub.1-6 alkyl cyclohexyl, C.sub.1-2 alkyl phenyl in which the phenyl ring is unsubstituted or substituted with one or more substitutents selected from the group consisting of OH, OCH.sub.3, F, Cl, I, CH.sub.3, CF.sub.3, NO.sub.2, NH.sub.2, N(CH.sub.3).sub.2, NHCOCH.sub.3, NHCOC.sub.6 H.sub.5, and C(CH.sub.3).sub.3, or C.sub.1-2 alkyl naphthyl in which the naphthyl rings are unsubstituted or substituted with one or more substituents selected from the group consisting of OH, OCH.sub.3, F, Cl, I, CH.sub.3, CF.sub.3, NO.sub.2, NH.sub.2, N(CH.sub.3).sub.2, NHCOCH.sub.3, NHCOC.sub.6 H.sub.5, and C(CH.sub.3).sub.3 ;
- R.sub.8 is Asp, Glu or Ala;
- R.sub.10 is Tyr or R.sub.6 ;
- R.sub.12 is Arg, Leu, Orn or Lys;
- R.sub.16 is Gln or Ala;
- R.sub.17 is Met, Nle or Ala;
- R.sub.19 is Val or Ala;
- R.sub.22 is Tyr or R.sub.6 ;
- R.sub.24 is Asn or Ala;
- X is hydrogen or a hydrolyzable amino protecting group;
- Y is hydroxyl, a hydrolyzable carboxy protecting group, or R.sub.29 --R.sub.30 --R.sub.31- Z;
- R.sub.29 is Gly or Ala;
- R.sub.30 is Gly or Ala;
- R.sub.31 is Ala, Met, Cys(Acm), or Thr;
- Z is hydroxyl or a hydrolyzable carboxy protecting group;
- or pharmaceutically acceptable salts thereof.
15 more elements
Dependencies are inferred from the claim text.