反应 #49177

反应方程式

Compound 19

(6-{2-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-hydroxy-pyrrolidin-1-yl}-6-oxo-hexyl)-carbamic acid 2-(2-hexadecyl-2,5,7,8-tetramethyl-chroman-6-yloxy)-ethyl ester

succinic anhydride

triethylamine

→

compound 21

收率 51.0%

Succinic acid mono-(5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-1-{6-[2-(2-hexadecyl-2,5,7,8-tetramethyl-chroman-6-yloxy)-ethoxycarbonylamino]-hexanoyl}-pyrrolidin-3-yl)ester

收率 51.0%

溶剂

dichloromethane

反应条件

后处理

1. 1
   其他dried in a vacuum at 40° C. overnight
2. 2
   workup.DISSOLUTIONThe mixture was dissolved in anhydrous dichloromethane (25 mL)
3. 3
   洗涤washed with ice cold aqueous citric acid (5% wt., 50 mL) and water (2×50 mL)
4. 4
   干燥The organic phase was dried over anhydrous sodium sulfate
5. 5
   浓缩concentrated to dryness
6. 6
   其他The crude product was purified by column chromatography

实验过程

Referring to scheme 7, Compound 19 (5.1 g, 5 mmol) was mixed with succinic anhydride (0.75 g, 7.5 mmol) and DMAP (0.062 g, 0.5 mmol) and dried in a vacuum at 40° C. overnight. The mixture was dissolved in anhydrous dichloromethane (25 mL), triethylamine (1.52 g, 2 mL, 15 mmol) was added and the solution was stirred at room temperature under argon atmosphere for 16 h. It was then diluted with dichloromethane (50 mL) and washed with ice cold aqueous citric acid (5% wt., 50 mL) and water (2×50 mL). The organic phase was dried over anhydrous sodium sulfate and concentrated to dryness. The crude product was purified by column chromatography to afford compound 21 as white foamy solid (2.85 g, 51% yield; Rf=0.65 in 10% MeOH/CHCl3).

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