Diisopropylethylamine → HCID 59386542, compound

Participants

Reaction Steps

A mixture of (2S,4R)-methyl 4-(biphenyl-4-yl)-4-methoxypyrrolidine-2-carboxylate (100 mg, 0.287 mmol), (S)-2-(tert-butoxycarbonylamino)-3-(2-nitro-N-(pent-4-enyl)phenylsulfonamido)propanoic acid (145 mg, 0.316 mmol), Hunig's Base (0.176 mL, 1.01 mmol) and HATU (131 mg, 0.345 mmol) in DCM (3 mL) was stirred at rt for 18 h. It was then concentrated in vacuo. The residue was dissolved in EtOAc and washed with dilute HCl, followed by sat.aq. NaHCO3 and water. The organic phase was dried over MgSO4, filtered, and concentrated in vacuo to yield 250 mg of the crude product as a brown oil. Purification by Biotage eluting with 60% EtOAc/Hexane gave 188 mg (87%) of (2S,4R)-methyl 4-(biphenyl-4-yl)-1-((S)-2-(tert-butoxycarbonylamino)-3-(2-nitro-N-(pent-4-enyl)phenylsulfonamido)propanoyl)-4-methoxypyrrolidine-2-carboxylate as an off-white foam.

Provenance & Evidence