反应详情

After 1.75 g (2.6 mmols) of Z-PyroGlu-Ala-Arg(NO2)-CHA was suspended in a solvent mixture of 112.5 ml of MeOH, 27.7 ml of H2O and 9.8 ml of 1N-HCl, 1 g of palladium black was added to the suspension followed by catalytic reduction at 30° C. for 6 hours. After the reaction, the catalyst was filtered off and the solvent was removed by distillation under reduced pressure. The residue was purified through TOYOPEARL HW40F column using MeOH as a developing solvent to give 0.471 g (34.4%) of H-PyroGlu-Ala-Arg-CHA.HCl.

1. additionwas added to the suspension
2. customAfter the reaction
3. filtrationthe catalyst was filtered off
4. customthe solvent was removed by distillation under reduced pressure
5. customThe residue was purified through TOYOPEARL HW40F column