methyl 4-(2-oxoethyl)benzoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of H-D-Glu(OtBu)-OtBu (0.5 g, 2.23 mmol) in MeOH (15 mL) were added 4-carbomethoxyphenylacetaldehyde (obtained from methyl 4-formyl benzoate as described in J. Med. Chem. 1989, 32, 1277-1283) (0.4 g, 2.23 mmol), acetic acid (0.15 mL, 2.67 mmol), and NaCNBH3 (3.3 mL, 1.0 M THF solution, 3.3 mmol). The resulting solution was stirred at RT for 3 h then was diluted with EtOAc (100 mL) and washed with water (50 mL), and brine (50 mL). The organic solution was dried over sodium sulfate and concentrated in vacuo. The crude oil was diluted with xylene and the solution refluxed for 5 h. This solution was concentrated under reduced pressure and purified by silica gel column chromatography using EtOAc/hexane as eluent to afford the title compound (0.75 g, 75%) as a white solid. Rf0.45 (EtOAc/hexane 1/1); 1H NMR (CDCl3) δ 1.47 (s, 9H), 1.95-2.05 (m, 1H), 2.10-2.20 (m, 1H), 2.25-2.35 (m, 1H), 2.40-2.50 (m, 1H), 2.80-3.00 (m, 2H), 3.10-3.20 (m, 1H), 3.82 (dd, 1H), 3.91 (s, 3H), 3.90-4.01 (m, 1H), 7.25 (d, 2H), 7.96 (d, 2H). washed with water (50 mL), and brine (50 mL) The organic solution was dried over sodium sulfate concentrated in vacuo The crude oil was diluted with xylene the solution refluxed for 5 h This solution was concentrated under reduced pressure purified by silica gel column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of H-D-Glu(OtBu)-OtBu (0.5 g, 2.23 mmol) in MeOH (15 mL) were added 4-carbomethoxyphenylacetaldehyde (obtained from methyl 4-formyl benzoate as described in J. Med. Chem. 1989, 32, 1277-1283) (0.4 g, 2.23 mmol), acetic acid (0.15 mL, 2.67 mmol), and NaCNBH3 (3.3 mL, 1.0 M THF solution, 3.3 mmol). The resulting solution was stirred at RT for 3 h then was diluted with EtOAc (100 mL) and washed with water (50 mL), and brine (50 mL). The organic solution was dried over sodium sulfate and concentrated in vacuo. The crude oil was diluted with xylene and the solution refluxed for 5 h. This solution was concentrated under reduced pressure and purified by silica gel column chromatography using EtOAc/hexane as eluent to afford the title compound (0.75 g, 75%) as a white solid. Rf0.45 (EtOAc/hexane 1/1); 1H NMR (CDCl3) δ 1.47 (s, 9H), 1.95-2.05 (m, 1H), 2.10-2.20 (m, 1H), 2.25-2.35 (m, 1H), 2.40-2.50 (m, 1H), 2.80-3.00 (m, 2H), 3.10-3.20 (m, 1H), 3.82 (dd, 1H), 3.91 (s, 3H), 3.90-4.01 (m, 1H), 7.25 (d, 2H), 7.96 (d, 2H). washed with water (50 mL), and brine (50 mL) The organic solution was dried over sodium sulfate concentrated in vacuo The crude oil was diluted with xylene the solution refluxed for 5 h This solution was concentrated under reduced pressure purified by silica gel column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of H-D-Glu(OtBu)-OtBu (0.5 g, 2.23 mmol) in MeOH (15 mL) were added 4-carbomethoxyphenylacetaldehyde (obtained from methyl 4-formyl benzoate as described in J. Med. Chem. 1989, 32, 1277-1283) (0.4 g, 2.23 mmol), acetic acid (0.15 mL, 2.67 mmol), and NaCNBH3 (3.3 mL, 1.0 M THF solution, 3.3 mmol). The resulting solution was stirred at RT for 3 h then was diluted with EtOAc (100 mL) and washed with water (50 mL), and brine (50 mL). The organic solution was dried over sodium sulfate and concentrated in vacuo. The crude oil was diluted with xylene and the solution refluxed for 5 h. This solution was concentrated under reduced pressure and purified by silica gel column chromatography using EtOAc/hexane as eluent to afford the title compound (0.75 g, 75%) as a white solid. Rf0.45 (EtOAc/hexane 1/1); 1H NMR (CDCl3) δ 1.47 (s, 9H), 1.95-2.05 (m, 1H), 2.10-2.20 (m, 1H), 2.25-2.35 (m, 1H), 2.40-2.50 (m, 1H), 2.80-3.00 (m, 2H), 3.10-3.20 (m, 1H), 3.82 (dd, 1H), 3.91 (s, 3H), 3.90-4.01 (m, 1H), 7.25 (d, 2H), 7.96 (d, 2H). washed with water (50 mL), and brine (50 mL) The organic solution was dried over sodium sulfate concentrated in vacuo The crude oil was diluted with xylene the solution refluxed for 5 h This solution was concentrated under reduced pressure purified by silica gel column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 0° C. solution of 4-(2-Methoxy-vinyl)-benzoic acid methyl ester (930 mg, 4.84 mmol) in THF (50 mL) is added conc. HCl (7 mL) dropwise. After 2 h, the reaction is diluted with water and the pH is adjusted to 7. The aqueous layer is extracted with Et2O (2×200 mL). The combined organic layers are washed with brine, dried (MgSO4), filtered, concentrated, and chromatographed (0% to 30% EtOAC/Hex) to yield the title compound (613 mg, 71%). 1H NMR (400 MHz, CDCl3) δ 9.77 (t, 1H, J=2.2 Hz), 8.04 (d, 2H, J=8.4 Hz), 7.30 (d, 2H, J=8.8 Hz), 3.92 (s, 3H), 3.77 (d, 2H, J=2.2 Hz). The aqueous layer is extracted with Et2O (2×200 mL) The combined organic layers are washed with brine dried (MgSO4) filtered concentrated chromatographed (0% to 30% EtOAC/Hex)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl 4-formylmethylbenzoate (56.3 mg, 0.316 mmol, 4-chlorophenyl isocyanide (43.5 mg, 0.316 mmol), 1-(2,4-dimethoxyphenyl)methanamine (56.9 μL, 0.379 mmol) and benzoic acid (38.6 mg, 0.316 mmol) were dissolved in 100 μL of trifluoroethanol and heated at 50° C. for 2 hours. The reaction mixture was diluted with 2 mL of methanol and purified by reversed phase HPLC to afford the desired product. MS cal'd 587.2 (MH+), exp 587.2 (MH+). purified by reversed phase HPLC

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl 4-formylmethylbenzoate (52.3 mg, 0.294 mmol), 4-chlorophenyl isocyanide (40.4 mg, 0.294 mmol), N-methylpiperazine (39.1 μL, 0.352 mmol) and AcOH (16.6 μL, 0.294 mmol) were dissolved in 100 μL of trifluoroethanol and heated at 50° C. for 3 hours. The reaction mixture was diluted with 2 mL of methanol and purified by reverse phase HPLC to afford the desired product. MS cal'd 416.2 (MH+), exp 416.2 (MH+). purified by reverse phase HPLC

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of H-D-Glu(OtBu)-OtBu, commercially available from Bache (0.5 g, 2.23 mmol) in MeOH (15 mL) were added 4-carbomethoxyphenylacetaldehyde (obtained from methyl 4-formyl benzoate as described in Nair et al., 1989) (0.4 g, 2.23 mmol), acetic acid (0.15 mL, 2.67 mmol), and NaCNBH3 (3.3 mL, 1.0 M THF solution, 3.3 mmol). The resulting solution was stirred at RT for 3 h then was diluted with EtOAc (100 mL) and washed with water (50 mL), and brine (50 mL). The organic solution was dried over sodium sulfate and concentrated in vacuo. The crude oil was diluted with xylene and the solution refluxed for 5 h. This solution was concentrated under reduced pressure and purified by silica gel column chromatography using EtOAc/hexane as eluent to afford the title compound (0.75 g, 75%) as a white solid. Rj 0.45 (EtOAc/hexane 1/1); 1H NMR (CDCl3) δ 1.47 (s, 9H), 1.95-2.05 (m, 1H), 2.10-2.20 (m, 1H), 2.25-2.35 (m, 1H), 2.40-2.50 (m, 1H), 2.80-3.00 (m, 2H), 3.10-3.20 (m, 1H), 3.82 (dd, 1H), 3.91 (s, 3H), 3.90-4.01 (m, 1H), 7.25 (d, 2H), 7.96 (d, 2H). washed with water (50 mL), and brine (50 mL) The organic solution was dried over sodium sulfate concentrated in vacuo The crude oil was diluted with xylene the solution refluxed for 5 h This solution was concentrated under reduced pressure purified by silica gel column chromatography