3-Furoic acid → HCID 57945160, compound

Participants

Reaction Steps

A solution of 44 mg (0.068 mmol) of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-1-[4-(3-aminopropoxy)benzyl]-3-[(1,3-benzodioxol-5-ylsulfonyl)(isobutyl)amino]-2-hydroxypropylcarbamate, 15 mg (0.14 mmol) of 3-furoic acid, and 36 μL (0.20 mmol) of N,N-diisopropylethylamine in 2 mL of anhydrous DMF was treated with 52 mg (0.14 mmol) of O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU) and the resulting solution was stirred at RT. After 18 hours the solution was concentrated in vacuo and the residue subjected to flash chromatography (SiO2, 97:3 CH2Cl2/MeOH) to afford 38 mg (75%) of the desired compound as a white foam. 1H NMR (CDCl3): 7.88 (s, 1H), 7.38 (s, 1H), 7.29 (d, 1H), 7.10 (m, 3H), 6.84 (d, 1H), 6.76 (d, 2H), 6.56 (s, 1H), 6.34 (br s, 1H), 6.05 (s, 2H), 5.60 (d, 1H), 5.00 (m, 2H), 4.01 (t, 2H), 3.90 (dd, 1H), 3.80 (m, 3H), 3.64 (m, 2H), 3.55 (q, 2H), 3.17-2.63 (m, 8H), 2.03 (m, 2H), 1.80 (m, 1H), 1.61 (m, 1H), 1.49 (m, 1H), 0.89 (d, 3H), 0.83 (d, 3H). MS(ESI): 744(M+H).

Provenance & Evidence