Acetyl chloride → HCID 6321073, compound

Participants

Reaction Steps

A solution of 21 mg (0.033 mmol) of (3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[(1,3-benzodioxol-5-ylsulfonyl)(isobutyl)amino]-2-hydroxy-1-[4-(2-aminoethoxy)benzyl]propylcarbamate in 2 mL of 1:1 THF/CH2Cl2 was treated with 9 μL (0.050 mmol) of N,N-diisopropylethylamine followed by 2.6 μL (0.036 mmol) of acetyl chloride. The resulting solution was stirred at RT. After 1.5 hours the solution was concentrated in vacuo and the residue subjected to flash chromatography (SiO2, 95:5 CH2Cl2/MeOH) to afford the desired compound in 86% yield as a white foam. 1H NMR (CDCl3): 7.29 (dd, 1H), 7.16-7.04 (m, 3H), 7.05 (d, 1H), 6.76 (d, 2H), 6.05 (s, 2H), 5.91 (br s, 1H), 5.01 (d, 1H), 5.05-4.89 (m, 2H), 3.94 (m, 3H), 3.80 (m, 3H), 3.72-3.51 (m, 5H), 3.08 (dd, 1H), 3.01-2.83 (m, 44), 2.74 (m, 2H), 1.97 (s, 3H), 1.86-1.45 (m, 3H), 0.90 (d, 3H), 0.84 (d, 3H). MS(ESI): 678(M+H).

Provenance & Evidence