反应 #49173

反应方程式

Compound 6

(6-{2-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-hydroxy-pyrrolidin-1-yl}-6-oxo-hexyl)-carbamic Acid 10,13-dimethyl-17-octyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester

succinic anhydride

triethylamine

→

compound 8

收率 89.5%

Succinic acid mono-{5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-1-[6-(10,13-dimethyl-17-octyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yloxycarbonylamino)-hexanoyl]-pyrrolidin-3-yl}ester

收率 89.5%

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 (50 mL)
3. 3
   洗涤washed with ice cold aqueous citric acid (5% wt., 100 mL) and water (2×100 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 3, Compound 6 (22 g, 23.2 mmol) was mixed with succinic anhydride (3.48 g, 34.8 mmol) and DMAP (0.283 g, 2.32 mmol) and dried in a vacuum at 40° C. overnight. The mixture was dissolved in anhydrous dichloromethane (50 mL), triethylamine (7 g, 9.6 mL, 70 mmol) was added and the solution was stirred at room temperature under argon atmosphere for 16 h. It was then diluted with dichloromethane (100 mL) and washed with ice cold aqueous citric acid (5% wt., 100 mL) and water (2×100 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 8 as white solid (21.7 g, 89% yield; Rf=0.5 in 10% MeOH/CHCl3).

来源