反应详情

The carboxylic acid group of folic add (1.0 g, 2 mmol) dissolved in 20 mL of DMSO was pre-activated with DCC (0.495 g, 2.4 mmol) and NHS (0.463 g 4 mmol) at room temperature (Scheme 2). In the reaction, dicyclohexylurea was formed and removed by filtration. The vacuum-dried precursor polymer was added to the reaction solution. The reaction was kept at room temperature for 48 hours. The resulting solution was placed in a dialysis membrane with a molecular weight cut-off of 2000 and dialyzed against DI water for one week. The final product was harvested by freeze-drying.

1. customIn the reaction