3-氯-4-氟苄胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 4-Fluoro-3-Chloro benzylamine (0.060 g, 1.29 mmol, 2 eq) and N,7-bis(benzyloxy)-3-oxo-1,3-dihydrofuro[3,4-c]pyridine-6-carboxamide (0.050 g, 0.141 mmol, 1 eq) (compound 1c of example 1) were heated in DMF at 90° C. for 120 min. The crude product was purified by silica gel (100% ethyl acetate) yielding 0.03 g of N2,3-bis(benzyloxy)-N5-(3-chloro-4-fluorobenzyl)-4-(hydroxymethyl)pyridine-2,5-dicarboxamide as a white solid; MS-ESI m/z 573 [MH]−. The crude product was purified by silica gel (100% ethyl acetate)

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was prepared by essentially following the same procedures described for Intermediate XLIV, using (3-chloro-4-fluorophenyl)methanamine and 2-bromoimidazo[2,1-b]thiazole-6-carboxylic acid as starting materials.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was prepared by essentially following the same procedures described for Intermediate I, using (3-chloro-4-fluorophenyl)methanamine and ethyl 6-bromoimidazo[1,2-a]pyridine-2-carboxylate as starting materials.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of (4-carbamoyl-3-mercapto-isothiazol-5-yl)-carbamic acid phenyl ester (0.075 g, 0.25 mmol) in 0.5 mL of DMF was added 4-methylbenzylchloride (0.036 g, 0.25 mmol), followed by N,N-diisopropylethylamine (0.033 g, 0.25 mmol). After stirring for 18 hours at ambient temperature, tetrahydrofuran (1 mL) was added, followed by 3-chloro-4-fluorobenzylamine (0.081 g, 0.51 mmol). After stirring for 24 hours at 45° C., the mixture was diluted with 1M HCl, extracted 3× with ethyl acetate, and the combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by radial chromatography on silica gel eluting with ethyl acetate-hexane, affording 26 mg of 5-[3-(3-chloro-4-fluoro-benzyl)-ureido]-3-(4-methyl-benzylsulfanyl)-isothiazole-4-carboxylic acid amide as a colorless solid. HPLC ret. time: 4.9 minutes. 1H NMR (400 MHz, acetone-d6) δ7.95 (bs, 1H), 7.54 (dd, 1H, J=2, 7.2 Hz), 7.39 (m, 1H), 7.31-7.25 (m, 3H), 7.11 (d, 2H, J=8.0 Hz), 7.01 (bs, 2H), 4.48 (m, 4H), 2.28 (s, 3H) ppm; MS (APCl, m/z): 465 [M+H]+. After stirring for 24 hours at 45° C. extracted 3× with ethyl acetate the combined organic layers were dried over Na2SO4 filtered concentrated in vacuo The residue was purified by radial chromatography on silica gel eluting with ethyl acetate-hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of (4-carbamoyl-3-mercapto-isothiazol-5-yl)-carbamic acid phenyl ester (0.075 g, 0.25 mmol) in 0.5 mL of DMF was added 4-methylbenzylchloride (0.036 g, 0.25 mmol), followed by N,N-diisopropylethylamine (0.033 g, 0.25 mmol). After stirring for 18 hours at ambient temperature, tetrahydrofuran (1 mL) was added, followed by 3-chloro-4-fluorobenzylamine (0.081 g, 0.51 mmol). After stirring for 24 hours at 45° C., the mixture was diluted with 1M HCl, extracted 3× with ethyl acetate, and the combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by radial chromatography on silica gel eluting with ethyl acetate-hexane, affording 26 mg of 5-[3-(3-chloro-4-fluoro-benzyl)-ureido]-3-(4-methyl-benzylsulfanyl)-isothiazole-4-carboxylic acid amide as a colorless solid. HPLC ret. time: 4.9 minutes. 1H NMR (400 MHz, acetone-d6) δ7.95 (bs, 1H), 7.54 (dd, 1H, J=2, 7.2 Hz), 7.39 (m, 1H), 7.31-7.25 (m, 3H), 7.11 (d, 2H, J=8.0 Hz), 7.01 (bs, 2H), 4.48 (m, 4H), 2.28 (s, 3H) ppm; MS (APCl, m/z): 465 [M+H]+. After stirring for 24 hours at 45° C. extracted 3× with ethyl acetate the combined organic layers were dried over Na2SO4 filtered concentrated in vacuo The residue was purified by radial chromatography on silica gel eluting with ethyl acetate-hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Reaction of intermediate 13, ethyl 6-hydroxy-1-methyl-2,5-dioxo-1,2,3,5-tetrahydroimidazo[1,2-a]pyrimidine-7-carboxylate (0.050 g, 0.197 mmol) with 3-chloro-4-fluorobenzylamine (0.10 g, 0.63 mmol) as described in the preparation of example 1 gave 0.038 g (52% yield) of the title amide as a white solid. 1HNMR 400 MHz (DMSO-d6) δ (ppm): 3.15 (3H, s, NCH3), 4.48 (2H, s, CH2), 4.49 (2H, d, J=6.4 Hz, NCH2), 7.3–7.55 (3H, m, aromatics), 9.50 (1H, broad t, NH), 12.16 (1H, s, OH). MS (ESI+) m/z 367 [M+H+]. as described in the preparation of example 1

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 4-Fluoro-3-Chloro benzylamine (0.060 g, 1.29 mmol, 2 eq) and N,7-bis(benzyloxy)-3-oxo-1,3-dihydrofuro[3,4-c]pyridine-6-carboxamide (0.050 g, 0.141 mmol, 1 eq) (compound 1c of example 1) were heated in DMF at 90° C. for 120 min. The crude product was purified by silica gel (100% ethyl acetate) yielding 0.03 g of N2,3-bis(benzyloxy)-N5-(3-chloro-4-fluorobenzyl)-4-(hydroxymethyl)pyridine-2,5-dicarboxamide as a white solid; MS-ESI m/z 573 [MH]−. The crude product was purified by silica gel (100% ethyl acetate)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 4-Fluoro-3-Chloro benzylamine (0.060 g, 1.29 mmol, 2 eq) and N,7-bis(benzyloxy)-3-oxo-1,3-dihydrofuro[3,4-c]pyridine-6-carboxamide (0.050 g, 0.141 mmol, 1 eq) (compound 1c of example 1) were heated in DMF at 90° C. for 120 min. The crude product was purified by silica gel (100% ethyl acetate) yielding 0.03 g of N2,3-bis(benzyloxy)-N5-(3-chloro-4-fluorobenzyl)-4-(hydroxymethyl)pyridine-2,5-dicarboxamide as a white solid; MS-ESI m/z 573 [MH]−. The crude product was purified by silica gel (100% ethyl acetate)

反应条件: temp:0.00; pressure:0.00; stir: