- PROCESS FOR THE PREPARATION OF PROLINE DERIVATIVES
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The present invention relates in part to a process for the preparation of a proline derivative of formula I wherein, R1 is C1-7-alkyl or wherein R4 is selected from the group consisting of C1-7-alkyl, halogen-C1-7-alkyl and phenyl optionally substituted by halogen; R2 is halogen or halogen-C1-7-alkyl; and R3 is selected from the group consisting of hydrogen, halogen, halogen-C1-7-alkyl, C1-7-alkoxy, halogen-C1-7-alkoxy and a 5- or 6-membered heterocyclic ring containing one or two nitrogen atoms, said ring being optionally substituted by C1-7-alkyl or halogen. The proline derivatives of the formula I are preferential inhibitors of the cysteine protease Cathepsin S and are therefore useful to treat metabolic diseases like diabetes, atherosclerosis, abdominal aortic aneurysm, peripheral arterial disease and diabetic nephropathy.
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Paragraph 0185; 0186
(2013/05/22)
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- PROCESS FOR THE PREPARATION OF 1-ACYL-4-PHENYLSULFONYLPROLINAMIDE DERIVATIVES AND NEW INTERMEDIATES
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A novel process for the preparation of proline derivatives of formula (I) wherein,R1 is selected from C1-7-alkyl or from formula (II) wherein R4 is selected from C1-7-alkyl, halogen-C1-7-alkyl or from phenyl which is optionally substituted by halogen; R2 is selected from halogen or halogen-C1-7-alkyl; and R3 is selected from hydrogen, halogen, halogen-C1-7-alkyl, C1-7-alkoxy, halogen-C1-7-alkoxy or from a 5- or 6-membered heterocyclic ring containing one or two nitrogen atoms, the ring which is optionally substituted by C1-7-alkyl or halogen is described. The proline derivatives of the formula I are preferential inhibitors of the cysteine protease Cathepsin S and are therefore useful to treat metabolic diseases like diabetes, atherosclerosis, abdominal aortic aneurysm, peripheral arterial disease and diabetic nephropathy.
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Page/Page column 35
(2013/05/23)
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