Abstract: The invention relates to novel cyclic compounds which have the ability to modulate the activity of G protein-coupled receptors. The compounds preferably act as antagonists. In preferred embodiments, the invention provides cyclic peptidic and peptidomimetic antagonists of C5a receptors, which are active against C5a receptors on polymorphonuclear leukocytes and macrophages. The compounds of the invention are both potent and selective, and are useful in the treatment of a variety of inflammatory conditions.

Abstract: The invention relates to novel cyclic compounds which have the ability to modulate the activity of G protein-coupled receptors. The compounds preferably act as antagonists. In preferred embodiments, the invention provides cyclic peptidic and peptidomimetic antagonists of C5a receptors, which are active against C5a receptors on polymorphonuclear leukocytes and macrophages. The compounds of the invention are both potent and selective, and are useful in the treatment of a variety of inflammatory conditions.

Abstract: The invention relates to novel cyclic compounds which have the ability to modulate the activity of G protein-coupled receptors. The compounds preferably act as antagonists. In preferred embodiments, the invention provides cyclic peptidic and peptidomimetic antagonists of C5a receptors, which are active against C5a receptors on polymorphonuclear leukocytes and macrophages. The compounds of the invention are both potent and selective, and are useful in the treatment of a variety of inflammatory conditions.

Abstract: Novel phosphotetrahydropyran compounds that mimic mannose-6-phosphate but that are more resistant to phosphatases and mannosidases, and pharmaceutical compositions thereof, are disclosed. These compounds and compositions inhibit T lymphocyte migration from blood to tissues or to other extravascular sites. By inhibiting such migration, these compounds are useful for treating diseases or disorders that are mediated at least in part by such T lymphocyte migration. Such diseases and disorders include rheumatoid arthritis, multiple sclerosis, acute disseminated encephalomyelitis, psoriasis, inflammatory bowel disease, T cell-mediated dermatitis, stromal keratitis, uveitis, thyroiditis, sialitis and type I diabetes.

Abstract: The invention relates to novel cyclic compounds which have the ability to modulate the activity of G protein-coupled receptors. The compounds preferably act as antagonists. In preferred embodiments, the invention provides cyclic peptidic and peptidomimetic antagonists of C5a receptors, which are active against C5a receptors on polymorphonuclear leukocytes and macrophages. The compounds of the invention are both potent and selective, and are useful in the treatment of a variety of inflammatory conditions.

Abstract: A HIV-1 protease inhibitor which includes a n-terminal cycle (A) or a C-terminal cycle (B) or both cycles (A) and (B) wherein Y is selected from side chains of Asn or Ilc or Val or Glu and alkyl of 1-6 carbon atoms inclusive of linear branched chains as well as cycloalkyl; and X is selected from (CH2)n where n=3-6, --CH(OH)--CH(OH)--CH2; CH(CO2H)--CH2--CH2; CH2CONHCHR where R=D or L amino acids and alkyl of 1-6 carbon atoms inclusive of linear or branched chains.