Hydrochloric Acid → HCID 53340058, compound

Participants

Reaction Steps

(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) was taken up in 6 mL of a 4 N HCl solution in dioxane and stirred at room temperature under an inert atmosphere of argon for 2 h. The reaction mixture was concentrated under reduced pressure and the resulting residue was partitioned between 30 mL of EtOAc and 30 mL of water. The organic layer was further washed with brine until the pH of the water layer was close to neutral, dried over Na2SO4 and concentrated under reduced pressure. Purification by preparative HPLC using a mixture of aqueous acetonitrile that has been buffered with 0.1% TFA afforded (S)-6-((4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamido)-2-((E)-4-methoxy-4-oxobut-2-enamido)hexanoic acid (160 mg; 35%). MS (EI) calcd for C33H48N2O6: 568.35. found 569 (M+1).

Provenance & Evidence