摘要:
A novel process is provided for the preparation of imidazolidinone &agr;v&bgr;3/&agr;v&bgr;5 integrin antagonists, and the useful intermediates obtained therein. These compounds are antagonists of &agr;v&bgr;3/&agr;v&bgr;5 integrin receptors and thus useful for inhibiting bone resorption and treating and preventing osteoporosis. Also disclosed is 3-{2-oxo-3-[3-(5,6,7,8-tetrahydro-[1,8]naphthyridin-2-yl)-propyl]imidazolidin-1-yl}-3(S)-(6-methoxy-pyridin-3-yl)-propionic acid in the form of a hemihydrate.
摘要:
A novel process is provided for the preparation of 3-(5,6,7,8-tetrahydro-[1,8]-naphthyridin-2-yl)-propylamine which is useful in the synthesis of &agr;v integrin receptor antagonists. Also provided are useful intermediates obtained from the process.
摘要:
The invention discloses a novel process for the preparation of enantiomerically enriched mixtures of compounds of structural formula I which are useful intermediates in the synthesis of &agr;v&bgr;3 integrin receptor antagonists
摘要:
The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives which are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of a prochiral beta amino acrylic acid derivative substrate in the presence of a transition metal precursor complexed with a chiral ferrocenyl diphosphine ligand.
摘要:
The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives wherein the amino group is unprotected. The product chiral beta amino acid derivatives are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of an amine-unprotected prochiral beta-amino acrylic acid or derivative thereof in the presence of a rhodium metal precursor complexed with a chiral mono- or bisphosphine ligand.