HCID 86610284, compound → HCID 178453629, compound

Participants

Reaction Steps

Following the general nucleophilic carbamoylation procedure, tranexamic acid (800 mg, 5 mmol) and 1-[(2,5-dioxopyrrolidinyl)oxycarbonyloxy]butyl 2-methylpropanoate (700 mg, 2.3 mmol) were reacted in the MTBE/acetone/water mixture (16 mL) to yield the title compound 36 (100 mg, 13% yield) as a white powder after work-up and mass-guided preparative HPLC purification. 1H NMR (400 MHz, DMSO-d6): δ=0.87-0.95 (m, 8H), 1.08 (d, J=4.0 Hz, 3H), 1.10 (d, J=4.0 Hz, 3H), 1.21-1.41 (br. m, 5H), 1.68-1.73 (m, 4H), 1.89-1.91 (m, 2H), 2.13 (tt, J=12, 3.2 Hz, 1H), 2.79-2.88 (m, 3H), 6.65 (t, J=5.6 Hz, 1H), 7.45 (t, J=6.0 Hz, 1H), 12.04 (s, 1H). MS (ESI) m/z 366.21 (M+Na)+; 342.16 (M−H)−.

Provenance & Evidence