반응 #956979

반응 방정식

HATU

(S)-tert-butyl 2-amino-6-((4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamido)hexanoate

monomethyl fumarate

DIEA

→

(S)-tert-butyl 6-((4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamido)-2-((E)-4-methoxy-4-oxobut-2-enamido)hexanoate

수율 30.0%

용매

acetonitrile

반응 조건

후처리

1. 1
   기타The resulting reaction mixture
2. 2
   농축concentrated under reduced pressure
3. 3
   세척washed with water and brine
4. 4
   건조The organic layer was dried over Na2SO4
5. 5
   농축concentrated under reduced pressure
6. 6
   기타Purification by silica gel chromatography (EtOAc/pentane)

실험 절차

The crude (S)-tert-butyl 2-amino-6-((4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamido)hexanoate, prepared above, was taken up in 40 mL acetonitrile along with monomethyl fumarate (610 mg, 4.69 mmol), DIEA (3.0 mL, 18.8 mmol) and HATU (2.4 g, 6.39 mmol). The resulting reaction mixture was stirred at room temperature for 2 h and then concentrated under reduced pressure. The resulting residue was taken up in 100 mL of EtOAc and washed with water and brine. The organic layer was dried over Na2SO4 and concentrated under reduced pressure. Purification by silica gel chromatography (EtOAc/pentane) afforded (S)-tert-butyl 6-((4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamido)-2-((E)-4-methoxy-4-oxobut-2-enamido)hexanoate (500 mg, 30%).

출처