The preparation of N-1-(5-chloropyridin-2-yl)-N-2-[4-(2-oxo-2H-pyridin-1-yl)phenyl]-(2R,4R)-4-hydroxypyrrolidine-1,2-dicarboxamide (“A6”) is carried out analogously to the following scheme:
894 mg (4.43 mmol) of 4-nitrophenyl chloroformate are added to a solution of 570 mg (4.43 mmol) of 2-amino-5-chloropyridine and 0.73 ml (9.0 mmol) of pyridine in 50 ml of dichloromethane, and the mixture is stirred at room temperature for 1 hour. 1.49 g (4.43 mmol) of (2R,4R)-4-hydroxy-2-[4-(2-oxo-2H-pyridin-1-yl)phenylcarbamoyl]pyrrolidinium chloride and 1.5 ml (9.0 mmol) of N-ethyldiisopropylamine are added to the resultant suspension, and the reaction mixture is stirred at room temperature for 18 hours. The reaction mixture is evaporated, and the residue is chromatographed on a silica-gel column with dichloromethane/methanol 95:5 as eluent: N-1-(5-chloropyridin-2-yl)-N2-[4-(2-oxo-2H-pyridin-1-yl)phenyl]-(2R,4R)-4-hydroxypyrrolidine-1,2-dicarboxamide (“A6”) as colourless solid, ESI 454.
The following compounds are obtained analogously
5 g (10.9 mmol) of N-1-(4-chlorophenyl)-N-2-[4-(3-oxomorpholin-4-yl)phenyl]-4-hydroxypyrrolidine-1,2-dicarboxamide are suspended in 50 ml of THF, and 2.5 ml of triethylamine are added. 2 ml (2 eq) of ethyl chloroformate are subsequently added to the reaction mixture. After 16 hours, the mixture is subjected to aqueous work-up, and the crude product is recrystallised from ethanol, giving 5 g of colourless N-1-(4-chlorophenyl)-4-(ethoxycarbonyloxy)-N-2-[4-(3-oxomorpholin-4-yl)phenyl)-(2R,4R)-pyrrolidine-1,2-dicarboxamide (“A1”).
The following compound is obtained analogously
14.1 All compounds of the following formula VI (where R═H or methyl; n=3, 4 or 5) can be synthesised in accordance with the following scheme
1-(4-Amino-2-methylphenyl)piperidin-2-one is prepared, for example, as indicated below
The TEMPO oxidation is carried out in accordance with the following literature:
The following examples relate to pharmaceutical compositions.
A solution of 100 g of an active ingredient of the formula I and 5 g of disodium hydrogenphosphate in 3 l of bidistilled water is adjusted to pH 6.5 using 2 N hydrochloric acid, sterile filtered, transferred into injection vials, lyophilised under sterile conditions and sealed under sterile conditions. Each injection vial contains 5 mg of active ingredient.
A mixture of 20 g of an active ingredient of the formula I with 100 g of soya lecithin and 1400 g of cocoa butter is melted, poured into moulds and allowed to cool. Each suppository contains 20 mg of active ingredient.
A solution is prepared from 1 g of an active ingredient of the formula I, 9.38 g of NaH2PO4.2H2O, 28.48 g of Na2HPO4. 12H2O and 0.1 g of benzalkonium chloride in 940 ml of bidistilled water. The pH is adjusted to 6.8, and the solution is made up to 1 l and sterilised by irradiation. This solution can be used in the form of eye drops.
500 mg of an active ingredient of the formula I are mixed with 99.5 g of Vaseline under aseptic conditions.
A mixture of 1 kg of active ingredient of the formula I, 4 kg of lactose, 1.2 kg of potato starch, 0.2 kg of talc and 0.1 kg of magnesium stearate is pressed to give tablets in a conventional manner in such a way that each tablet contains 10 mg of active ingredient.
Tablets are pressed analogously to Example E and subsequently coated in a conventional manner with a coating of sucrose, potato starch, talc, tragacanth and dye.
2 kg of active ingredient of the formula I are introduced into hard gelatine capsules in a conventional manner in such a way that each capsule contains 20 mg of the active ingredient.
A solution of 1 kg of active ingredient of the formula I in 60 l of bidistilled water is sterile filtered, transferred into ampoules, lyophilised under sterile conditions and sealed under sterile conditions. Each ampoule contains 10 mg of active ingredient.
Number | Date | Country | Kind |
---|---|---|---|
102004047254.8 | Sep 2004 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/EP05/09418 | 9/1/2005 | WO | 00 | 3/28/2007 |