修飾聚合物的種類有聚乙二醇(PEG)、聚丙烯酰胺(PPA)、聚乙烯吡咯烷酮(PVP)等,其中PEG是常用的一種。PEG分子與磷脂分子通過共價鍵結(jié)合形成PEG衍生化磷脂,能保護(hù)脂質(zhì)體,使脂質(zhì)體物理、化學(xué)及生物穩(wěn)定性提高。

Under argon protection, add the compound and tetrahydrofuran to a 250 mL round bottom flask and cool to around 0 ℃ under ice bath conditions. Slowly add sodium hydride (60 wt%, dispersed in mineral oil) into the reaction system in three batches for 30 minutes. Heat the reaction mixture to 40 ℃, and then slowly add 20 mL of dry tetrahydrofuran solution containing 8.35 g (24 mmol) of compound 4 to the reaction system using a syringe. The dripping process lasts for 2 hours. Further stir the reaction mixture in an argon atmosphere for 24 hours. After the reaction is completed, add 200 mL of saline water to quench the excess sodium hydride, and evaporate the organic solvent under reduced pressure. Using dichloromethane (200 mL × 3) Extract the slurry crude product three times, collect and combine the organic extract, wash with 250mL of 50 wt% sodium bicarbonate aqueous solution and 200 mL of water, dry the organic phase with anhydrous sodium sulfate, collect and concentrate to obtain the crude product, and then recrystallize to obtain 6.9 g (6 09 mmol) gray white powder with a yield of 70.24%.

產(chǎn)品名稱： 香豆素-聚乙二醇-磷脂
英文名稱：Coumarin-PEG-DSPG 
狀態(tài)：固體/粉末/溶液
產(chǎn)品規(guī)格：mg
保存：N/A
儲藏條件：N/A
儲存時間：1年
用途：科研
溫馨提醒：僅供科研，不能用于人體實驗

產(chǎn)品名稱： 香豆素-聚乙二醇-磷脂
英文名稱：Coumarin-PEG-DPPA
狀態(tài)：固體/粉末/溶液
產(chǎn)品規(guī)格：mg
保存：N/A
儲藏條件：N/A
儲存時間：1年
用途：科研
溫馨提醒：僅供科研，不能用于人體實驗


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溫馨提示:西安瑞禧生物供應(yīng)產(chǎn)品僅用于科研,不能用于人體