Structure of 58933-52-1
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CAS No. : | 58933-52-1 |
Formula : | C16H15NO4 |
M.W : | 285.30 |
SMILES Code : | O=C(O)C1=CC=C(CNC(OCC2=CC=CC=C2)=O)C=C1 |
MDL No. : | MFCD02094410 |
InChI Key : | QWHYEFZPTSTTSR-UHFFFAOYSA-N |
Pubchem ID : | 1479997 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P280-P301+P312-P302+P352-P305+P351+P338 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With sodium hydroxide; In tetrahydrofuran; water; at 0 - 20℃; for 16h; | Benzyl chloroformate (10.3 mL, 72.7 mmol) and 2 M NaOH solution (33 mL, 66 mmol) were simultaneously added dropwise to a stirred solution of 4-aminomethylbenzoic acid (29) (10.0 g, 66.2 mmol) in 2 M NaOH solution (33 mL) and THF (30 mL) at 0 C. The mixture was stirred at 20 C for 16 h, then the organic solvent was evaporated and the residue acidified with 2 M HC1 until the pH of the mixture was 2-3. The precipitate was filtered, washed with water (250 mL), washed with EtOH (50 mL), and finally washed with Et20 (100 mL). The solid was dried under vacuum to give acid 2 (16.43 g, 87%) as a white powder: mp 190-192 C [lit. (Loge et. al., J. Enzyme Inhibit. Med. Chem. 2002, 17, 381-390) mp (toluene) 194-195 C; 1H NMR δ 7.85 (br d, 2 H, H-2, H-6), 7.82 (br t, J = 6.1 Hz, 1 H, NHC02), 7.30-7.40 (m, 5 H, H-2', H-3', H-4', H-5', H-6'), 7.27 (br d, J = 8.2 Hz, 2 H, H-3, H-5), 5.05 (s, 2 H, OCH2), 4.24 (d, J = 6.1 Hz, 2 H, CH2N). |
87% | With sodium hydroxide; In tetrahydrofuran; at 0 - 20℃; for 16h; | Benzyl chloroformate (10.3 mL, 72.7 mmol) and 2 M NaOH solution (33 mL, 66 mmol) were simultaneously added dropwise to a stirred solution of 4-aminomethylbenzoic acid (29) (10.0 g, 66.2 mmol) in 2 M NaOH solution (33 mL) and THF (30 mL) at 0 C. The mixture was stirred at 20 C. for 16 h, then the organic solvent was evaporated and the residue acidified with 2 M HCl until the pH of the mixture was 2-3. The precipitate was filtered, washed with water (250 mL), washed with EtOH (50 mL), and finally washed with Et2O (100 mL). The solid was dried under vacuum to give acid 2 (16.43 g, 87%) as a white powder: mp 190-192 C. [lit. (Loge et. al., J. Enzyme Inhibit. Med. Chem. 2002, 17, 381-390) mp (toluene) 194-195 C.; 1H NMR δ 7.85 (br d, 2H, H-2, H-6), 7.82 (br t, J=6.1 Hz, 1H, NHCO2), 7.30-7.40 (m, 5H, H-2', H-3', H-4', H-5', H-6'), 7.27 (br d, J=8.2 Hz, 2H, H-3, H-5), 5.05 (s, 2H, OCH2), 4.24 (d, J=6.1 Hz, 2H, CH2N). |
87% | With sodium hydroxide; In tetrahydrofuran; at 0 - 20℃; for 16h; | Benzylchloroformate (10.3 mL, 72.7 mmol) and 2 M NaOH solution (33 mL, 66 mmol) weresimultaneously added dropwise to a stirred solution of 4-aminomethylbenzoicacid (1) (10.0 g, 66.2 mmol) in 2 M NaOH solution (33 mL) and THF (30 mL) at 0C. The mixture was stirred at 20 C. for 16 h, then the organic solvent wasevaporated and the residue acidified with 2 M HCl until the pH of the mixturewas 2-3. The precipitate was filtered, washed with water (250 mL), washed withEtOH (50 mL), and finally washed with Et2O (100 mL). The solid was dried undervacuum to give acid 2 (16.43 g, 87%) |
32% | With sodium hydrogencarbonate; In water; acetone; at 0 - 20℃; | 4-(Aminomethyl)benzoic acid (4.53 g, 30.0 mmol) was dissolved in acetone (50 mL), sodium hydrogen carbonate (sat, 50 mL), and water (50 mL). After cooling to 0 C and an additional adding of ice (ca 10 mL) to the reaction mixture, benzyl chloroformate (4.5 mL, 31.5 mmol) in acetone (25 ml) was added dropwise. The mixture was allowed to attain room temperature and then stirred overnight. The mixture was diluted with water and washed with dichloromethane. The water layer was acidified with HCI (1 M) and extracted with ethyl acetate. The organic layer was basified with NaOH (aq) and a precipitate was formed. This was filtered off, washed with acetone and dichloromethane. Recrystallization from methanol yielded pure product (2.76 g, 9.67 mmol, 32%). 3C NMR (101 MHz, DMSO-cfe) δ ppm 43.77, 65.79, 127.31 , 128.01 , 128.16, 128.69, 129.45, 129.69, 137.32, 145.24, 156.72, 167.39 |
With hydrogenchloride; In tetrahydrofuran; sodium hydroxide; | Step A. Preparation of 4-(N-CBz-aminomethyl)-benzoic acid 10.0 g (66 mmol) of 4-aminomethylbenzoic acid was dissolved in 33 ml of 2N NaOH solution (66 mmol) and 30 ml of THF. 12.45 g (73 mmol) of benzyl chloroformate and 37.5 ml of 2N NaOH solution was added in aliquots at 0 C. over 20 minutes. The reaction was stirred at room temperature over night and concentrated in vacuo to remove THF. 2N HCl was added to acidify to pH2-3. The precipitated solid was recovered by filtration and washed with ether to remove excess benzyl chloroformate. The solid was dried in vacuo to give 18.8 g of the desired product. 400 MHz 1H NMR (CD3OD): 4.31 (s, 2H); 5.09 (s, 2H); 7.30 (m, 7H); 7.91 (d, 2H). | |
With potassium carbonate; In water; for 16h; | Compound 34 (4.00 g, 26.5 mmol) in aq. K2CO3 (1.0 M, 144 mL) was stirred vigorously with BnOCOCl (4.52 g, 26.5 mmol) for 16 h. The precipitate was collected by filtration and dried. This material was stirred with SOCl2 (10 mL) under Ar for 16 h. The evaporation residue was suspended in CH2Cl2 and filtered. Evaporation gave the crude acyl chloride, which was used immediately. This acyl chloride in dry THF (70 mL) was stirred with 2-aminobenzamide 12 (1.96 g, 14.4 mmol), pyridine (1.48 g, 18.7 mmol) and DMAP (0.35 g, 2.88 mmol) under Ar for 16 h. The evaporation residue, in EtOAc, was washed twice with water and twice with brine. Drying, evaporation and chromatography (EtOAc/CH2Cl2 2:3) gave 35 (5.1 g, 88%) as a white solid: mp 180-183 C; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; at 40℃; for 2.5h; | A solution of Intermediate 4 (50 mg) in thionyl chloride (1 ml) was heated at 40 C for 2.5 hours. The solution was cooled down to RT, and then evaporated under vacuum. The resulting solid was dissolved in DCM (0.2 ml) and the solution was added dropwise to a solution of 4-amino-pyrimidine (16. 7 mg, 1 eq) in pyridine (1 ml, 0. 17 M). After stirring at 100 C for 1 hour, the reaction mixture was cooled down to RT, and then evaporated under vacuum. The resulting solid was dissolved in DCM. The organic layer was washed with 1M K2C03, with water, dried over MgS04 and evaporated under vacuum, yielding the [4- (pyrimidin-4-ylcarbamoyl)-benzyl]-carbamic acid benzyl ester as an orange powder (43% yield). To a solution of [4- (pyrimidin-4-ylcarbamoyl)-benzyl]-carbamic acid benzyl ester (27 mg), in methanol (5 ml), was added ammonium formate (37.6 mg, 8 eq) and Pd/C-10 % (5 mg). After 6 hours stirring at RT, the mixture was filtered through a celite cake and the filtrate evaporated under vacuum. The residue was dissolved in HCl 1N, the aqueous layer was washed with DCM, and then evaporated under vacuum, yielding a beige powder (27% yield).'H NMR (300 MHz, DMSO-d6): 4.20 ppm (m, 2H); 7.68 ppm (d, 2H, J =8. 2 Hz); 8. 15 ppm (d, 2H, J =8.2 Hz); 8.30 ppm (d, 2H, J =5.3 Hz); 8.42 ppm (m, 3H); 8.82 ppm (m, 1H); 9.06 ppm (s, 1H) ; 11.4 ppm (s, 1H). | |
With thionyl chloride; In N-methyl-acetamide; dichloromethane; | (a) Thionyl chloride (12 ml) and dimethylformamide (1 drop) were added to a solution of 4-benzyloxycarbonylaminomethylbenzoic acid (2.85 g) in dichloromethane (12 ml), and the mixture was stirred at room temperature for 2 hours. After the reaction, the solvent was evaporated under reduced pressure to give 4-benzyloxycarbonylaminomethylbenzoyl chloride as crystals. | |
With oxalyl dichloride; N,N-dimethyl-formamide; In tetrahydrofuran; at 50℃; for 4h; | 5.1.14 Benzyl 4-(pyridine-3-ylcarbamoyl)benzylcarbamate (26) Oxalyl chloride (4.58 mL, 52.5 mmol) was added dropwise to a solution of 4-(benzyloxycarbonylamino)methyl)benzoic acid 25 20 (10.0 g, 35.0 mmol) and DMF (4 drops) in dry THF (150 mL), and the mixture stirred at 50 C for 4 h. The solvent was evaporated and the residue dissolved in pyridine (80 mL). 3-Aminopyridine (3.62 g, 38.5 mmol) was added and the solution stirred at 20 C for 48 h. Water (150 mL) was added, the mixture stirred for another 2 h, the precipitate filtered off, washed with water and dried to give the carbamate 26 (7.82 g, 62%) as a white solid |
With thionyl chloride; for 16h;Inert atmosphere; | Compound 34 (4.00 g, 26.5 mmol) in aq. K2CO3 (1.0 M, 144 mL) was stirred vigorously with BnOCOCl (4.52 g, 26.5 mmol) for 16 h. The precipitate was collected by filtration and dried. This material was stirred with SOCl2 (10 mL) under Ar for 16 h. The evaporation residue was suspended in CH2Cl2 and filtered. Evaporation gave the crude acyl chloride, which was used immediately. This acyl chloride in dry THF (70 mL) was stirred with 2-aminobenzamide 12 (1.96 g, 14.4 mmol), pyridine (1.48 g, 18.7 mmol) and DMAP (0.35 g, 2.88 mmol) under Ar for 16 h. The evaporation residue, in EtOAc, was washed twice with water and twice with brine. Drying, evaporation and chromatography (EtOAc/CH2Cl2 2:3) gave 35 (5.1 g, 88%) as a white solid: mp 180-183 C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | To the above solid (4) (2.0 g, 7.0 mmol) in DCM (20 mL) was added oxalyl chloride (2.0 mL) at room temperature and then DMF (40 μL) was added slowly to the solution. After the reaction mixture was stirred for 2 h, the solution was concentrated. The residue was redissolved in DCM (10 mL) and treated with 28% aqueous ammonia solution (20 mL) at 0 C. and stirred for 1 h at this temperature. The solid product formed was collected by filtration, washed with water and dried in vacuum overnight to provide a white solid (5) (1.95 g, 98%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | Aminomethyl benzoic acid (6.0 g, 39.7 mmol) and Na2CO3 (8.41 g, 79.4 mmol) were dissolved in H2O (40 mL). To this mixture was added a solution Cbz-Osu (10.4 g, 41.7 mmol) in THF (40 mL). The resulting solution was stirred at room temperature overnight, then concentrated. The residue was acidified with 2N HCl to pH=2, which led to a solid precipitate. The product was collected by filtration and dried in vacuum overnight to give 9.6 g, 85% of a white solid (4). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Synthesis Example 41-2: Synthesis of Nα-(4-(N-Cbz) aminomethyl benzoyl)-L-ornithine 1-naphthalenemethylamide (Compound XX-1) 350 mg of the compound obtained in Synthesis Example 23-2 was dissolved in 7 ml of DMF, and then 265.0 g of WSCI hydrochloride, 169 mg of DMAP, and 276.0 mg of the compound obtained in Synthesis Example 41-1 were added to the solution and the whole was stirred for 24 hours at room temperature. On completion of the reaction, the solvent was distilled off and the residue was then dissolved in chloroform, followed by washing with a 1 mol/l hydrochloric acid and a saturated sodium hydrogencarbonate solution, and drying with sodium hydrogensulfate. The solvent was distilled off and the residue was then purified by means of silica gel column chromatography (20 g, chloroform/methanol = 10/1). 130 mg of the purified product was dissolved in 2.6 ml of methanol, and then 2.6 ml of a 4 mol/l hydrochloric acid/dioxane solution was added to the solution and the whole was stirred for 70 minutes at room temperature. On completion of the reaction, the solvent was distilled off and the residue was dried under vacuum, and 147 mg of hydrochloride of the above-mentioned compound was obtained as a white solid product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Synthesis Example 41-1: Synthesis of 4-(N-Cbz aminomethyl) benzoic acid (Compound XVII-4) 5 mg of commercially available 4-aminomethyl benzoic acid was dissolved in 33 ml of a 1 mol/l sodiumhydroxide aqueous solution. Under stirring at room temperature, 5.2 ml of benzylchloroformate, and 40 ml of a 1 mol/l sodium hydroxide aqueous solution were gradually added to the solution at the same time. After 3 hours, a 1 mol/l hydrochloric acid was added to the reaction solution to adjust the pH thereof to pH = 3. A precipitated product was filtrated through a glass filter G4. Then, filtrate was washed with water, and with hexane, followed by drying under reduced pressure. Consequently, 8.162 g of the above-mentioned compound was obtained as a white solid product. 1H-NMR(500MHz,DMSO-d6):δ=4.26 (2H,d,J=6.3Hz), 5.05 (2H,s), 7.30-7. 40 (7H,m), 7.88 (2H,d,J=8.3Hz), 7.91 (1H,t,J=6.3Hz). | ||
With hydrogenchloride; sodium hydroxide; In 1,4-dioxane; | C. 4-Benzyloxycarbonylaminomethylbenzoic acid 4-(Aminomethyl)benzoic acid 15.1 g (100 mmol) was dissolved in 200 mL dioxane and 100 mL 1.000 N NaOH and cooled in a 0 C. ice bath. The mixture was treated dropwise with benzylchloroformate 14.3 mL (100 mmol) followed by the dropwise addition of 100 mL of 1.000 N NaOH. The mixture was stirred at room temperature for 18 hours. The mixture was neutralized by adding 100 mL of 1.000 N HCl followed by dilution with dichloromethane. A white solid precipitated out which was filtered. The solid was dried in vacuo to afford 10.8 g (38.9%). 1H NMR (300 MHz, DMSO-d6): δ 4.24 (d, 2H, J=6.2 Hz); 5.01 (s, 2H); 7.31-7.34 (m, 7H); 7.84-7.88 (m, 3H); 12.85 (s, 1H). | |
With hydrogenchloride; sodium hydroxide; | Example 41-1 Synthesis of 4-(N-Cbz-aminomethyl)benzoic acid (Compound XVII-4) Commercially available 4-aminomethylbenzoic acid (5 g) was dissolved in 1 mol/l aqueous solution of sodium hydroxide (33 ml). Benzylchloroformate (5.2 ml) and 1 mol/l aqueous solution sodium hydroxide (40 ml) were gradually and simultaneously added while stirring at roomtemperature. After 3 hours, 1 mol/l hydrochloric acid was added to the reaction solution to adjust the pH to 3, and the deposited precipitate was collected by filtration through glass filter G4. The precipitate was washed with water and hexane, and dried under reduced pressure to obtain the title compound (8.162 g) as a white solid. 1H-NMR(500MHz,DMSO-d6):δ=4.26(2H,d,J=6.3Hz),5.05(2H,s), 7.30-7.40(7H,m),7.88(2H,d,J=8.3Hz),7.91(1H,t,J=6.3Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; In N,N-dimethyl-formamide; at 60℃; for 16h; | To a solution of 4-([(benzyloxy)carbonyl]amino}methyl)benzoic acid (0.58g, 2.0 mmol) and BOP (1.34g, 3.0 mmol) in DMF (20 mL) was added tert-butyl (3 -amino- 1 -phenyl- lH-pyrazol-4-yl)carbamate (0.61g, 2.2 mmol) and the resulting solution was heated to 6O0C for 16 hours. The reaction was partitioned between water and ethyl acetate. The organics were dried over sodium sulfate, filtered and evaporated in vacuo. Flash chromatography (5-40% ethyl acetate/hexanes) gave desired product. ESIMS calcd 542.2 (M+ + η), found 542.2 (M+ + η). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Synthesis Example 51-1: Synthesis of Nα-(4-(N-Cbz-aminomethyl) benzoyl)-NG- Pmc-L-arginine 1-naphthalenemethylamide (Compound XXX-1) 2.187 g of the compound obtained in Synthesis Example 42-1, 0.95 g of WSCI and 0.67 g of HOBt were dissolved in 33 ml of DMF, and then 0.51 ml of 1-naphthalenemethylamine was added to the solution. After 18 hours, the reaction solution was concentrated and a 1 mol/l hydrochloric acid was added thereto, followed by extraction with chloroform. A saturated sodium bicarbonate solution was added to an organic layer and extraction was performed with chloroform, followed by washing the organic layer with a saturated salt solution. The organic layer was driedwith anhydrous sodium sulfate and concentrated. The residue thus obtained was dissolved in 50 ml of DMF and 5 ml of diethylamine was added to the solution. After 1 hour, the residue obtained by concentrating the reaction solution was suspended in 40 ml of DMF, followed by the addition of 0.95 g of WSCI, 0.60 g of DMAP, and 0.75 g of the compound obtained in Synthesis Example 41-1 to the suspension. After 3 days, the reaction solution was concentrated and then a 1 mol/l hydrochloric acid was added thereto. Then, it was extracted with chloroform and an organic layer was washed with a saturated salt solution. The organic layer was dried with anhydrous sodium sulfate and concentrated. The residue thus obtained was purified by means of silica gel column chromatography (80 g, chloroform/methanol = 20/1), and 2.47 g of the above-mentioned compound was obtained as a light-yellow solid product. |
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