HCID 86610283, compound → HCID 178459858, compound

Participants

Reaction Steps

Following the general nucleophilic carbamoylation procedure, tranexamic acid (472 mg, 3.0 mmol) and 1-[(2,5-dioxopyrrolidinyl)oxycarbonyloxy]propyl 2,2-dimethylpropanoate (290 mg, 0.96 mmol) were reacted in the MTBE/acetone/water mixture (16 mL) to yield the title compound 31 (147 mg, 45% yield) as a white powder after work-up and mass-guided preparative HPLC purification. 1H NMR (400 MHz, DMSO-d6): δ=0.82-0.94 (br. m, 5H), 1.12 (s, 9H), 1.16-1.38 (m, 3H), 1.64-1.76 (m, 4H), 1.82-1.91 (br. m, 2H), 2.09 (tt, J=12.0, 3.2 Hz, 1H), 2.72-2.90 (m, 2H), 6.51 (t, J=5.6 Hz, 1H), 7.44 (t, J=6.0 Hz, 1H), 11.97 (br. s, 1H). MS (ESI) m/z 366.21 (M+Na)+; 342.16 (M−H)−.

Provenance & Evidence