反応 #1379900

反応方程式

MMC

→

mitomycin C

dimethylaminopyridine

溶媒

dimethylformamide

反応条件

後処理

1. 1
   その他After overnight reaction
2. 2
   その他the methylene chloride was evaporated off
3. 3
   その他the crude product was recovered by addition of isopropanol
4. 4
   ろ過followed by filtration
5. 5
   その他The mPEG-DTB-MMC conjugate was further purified by two precipitation from ethanol

実験手順

A solution of mitomycin C (MMC, 0.35 mmol), dimethylaminopyridine (0.1 mmol) and dimethylformamide (DMF, 2 mL) was prepared. The MMC solution was slowly added to the acyl chloride solution. After overnight reaction, the methylene chloride was evaporated off and the crude product was recovered by addition of isopropanol followed by filtration. The mPEG-DTB-MMC conjugate was further purified by two precipitation from ethanol. Yield: 3.4 g. The MMC content (≈90%) was determined by UV. The conjugate was further characterized by 1H NMR (360 MHz, CDCl3): δ 1.18 (d, J=7.5, 3H), 1.76 (s, 3H), 2.96–3.03 (m, 3H), 3.19 (s, 3H), 3.29 (dd, J=4.7 and 2.9 Hz, 1H), 3.41 (dd, J=5.0 and 2.2 Hz, 1H), 3.48 (dd, J=13.7 and 2.5 Hz, 1H), 3.60 (s, PEG, 1000H), 4.15 (t, OCOCH2, 2H), 4.27–4.36 (m, 2H), 4.43 (d, J=13.3 Hz, 1H), 4.61 (s, 2H), 4.90 (ddd, J=10.4 and 5.0 and 2.2 Hz, 1H), 5.00 (s, 2H), 7.32 (d, J=8.6 Hz, 2H), 7.50 (d, J=7.9 Hz, 2H).

出典