H-D-TRP-OBZL HCL

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

Procedure: To a stirred solution of Boc-D-Arg-OH hydrochloride (855 mg, 2.75 mmoles), H-D-Trp-OBzl hydrochloride (832 mg, 2.5 mmoles), HOBt (1378 mg, 9 mmoles) and DIPEA (2.05 ml, 12 mmoles) in DMF (5 ml) and dichloromethane (1 ml) cooled on ice was added HBTU (1138 mg, 3 mmoles) in small portions over 10 minutes. The mixture was stirred on ice for 1 hour, 40 ml dichloromethane was added and the organic phase washed successivly with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine. Evaporation afforded a white solid. the organic phase washed successivly with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine Evaporation afforded a white solid

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

Procedure: To a stirred solution of Boc-D-Arg-OH hydrochloride (855 mg, 2.75 mmoles), H-D-Trp-OBzl hydrochloride (832 mg, 2.5 mmoles), HOBt (1378 mg, 9 mmoles) and DIPEA (2.05 ml, 12 mmoles) in DMF (5 ml) and dichloromethane (1 ml) cooled on ice was added HBTU (1138 mg, 3 mmoles) in small portions over 10 minutes. The mixture was stirred on ice for 1 hour, 40 ml dichloromethane was added and the organic phase washed successively with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine. Evaporation afforded a white solid. the organic phase washed successively with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine Evaporation afforded a white solid

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

Procedure: To a stirred solution of Boc-D-Arg-OH hydrochloride (855 mg, 2.75 mmoles), H-D-Trp-OBzl hydrochloride (832 mg, 2.5 mmoles), HOBt (1378 mg, 9 mmoles) and DIPEA (2.05 ml, 12 mmoles) in DMF (5 ml) and dichloromethane (1 ml) cooled on ice was added HBTU (1138 mg, 3 mmoles) in small portions over 10 minutes. The mixture was stirred on ice for 1 hour, 40 ml dichloromethane was added and the organic phase washed successively with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine. Evaporation afforded a white solid. the organic phase washed successively with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine Evaporation afforded a white solid

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

Procedure: To a stirred solution of Boc-D-Arg-OH hydrochloride (855 mg, 2.75 mmoles), H-D-Trp-OBzl hydrochloride (832 mg, 2.5 mmoles), HOBt (1378 mg, 9 mmoles) and DIPEA (2.05 ml, 12 mmoles) in DMF (5 ml) and dichloromethane (1 ml) cooled on ice was added HBTU (1138 mg, 3 mmoles) in small portions over 10 minutes. The mixture was stirred on ice for 1 hour, 40 ml dichloromethane was added and the organic phase washed successivly with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine. Evaporation afforded a white solid. the organic phase washed successivly with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine Evaporation afforded a white solid

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

Procedure: To a stirred solution of Boc-D-Arg-OH hydrochloride (855 mg, 2.75 mmoles), H-D-Trp-OBzl hydrochloride (832 mg, 2.5 mmoles), HOBt (1378 mg, 9 mmoles) and DIPEA (2.05 ml, 12 mmoles) in DMF (5 ml) and dichloromethane (1 ml) cooled on ice was added HBTU (1138 mg, 3 mmoles) in small portions over 10 minutes. The mixture was stirred on ice for 1 hour, 40 ml dichloromethane was added and the organic phase washed successivly with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine. Evaporation afforded a white solid. the organic phase washed successivly with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine Evaporation afforded a white solid

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

Procedure: To a stirred solution of Boc-D-Arg-OH hydrochloride (855 mg, 2.75 mmoles), H-D-Trp-OBzl hydrochloride (832 mg, 2.5 mmoles), HOBt (1378 mg, 9 mmoles) and DIPEA (2.05 ml, 12 mmoles) in DMF (5 ml) and dichloromethane (1 ml) cooled on ice was added HBTU (1138 mg, 3 mmoles) in small portions over 10 minutes. The mixture was stirred on ice for 1 hour, 40 ml dichloromethane was added and the organic phase washed successively with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine. Evaporation afforded a white solid. the organic phase washed successively with 3×40 ml saturated NaHCO3, 2×30 ml 5% citric acid, 50 ml water and 2×30 ml brine Evaporation afforded a white solid