反应详情

To a solution of #156 (106 mg, 0.436 mmol, 1 eq.) in dichloromethane (3 mL) and N,N-dimethylformamide (0.5 mL) was added diisopropylethylamine (0.228 mL, 1.31 mmol, 3 eq.) followed by HATU (205 mg, 0.523 mmol, 1.2 eq.). The reaction was stirred for 15 minutes and #114 (276 mg, 0.436 mmol, 1 eq.) was added and stirred at room temperature for 2 hours. The reaction was diluted with dichloromethane (10 mL) and washed with 10% citric acid (3×5 mL). The organic layer was dried over sodium sulfate, filtered and the filtrate concentrated in vacuo. Purification of the residue by silica gel chromatography (Gradient: 0 to 80% acetone in heptane) afforded #160 (145 mg, 39%). LC-MS (protocol Q1): m/z 858.8 [M+H+], retention time=1.12 minutes.

1. stirringstirred at room temperature for 2 hours
2. washwashed with 10% citric acid (3×5 mL)
3. dry with materialThe organic layer was dried over sodium sulfate
4. filtrationfiltered
5. concentrationthe filtrate concentrated in vacuo
6. customPurification of the residue by silica gel chromatography (Gradient: 0 to 80% acetone in heptane)