HCID 53771313, compound → HCID 54519668, compound

Participants

Reaction Steps

A solution of 140 mg (0.25 mmol) (R)-1-[[4-[2-[(R)-2-tert-butoxycarbonyl-pyrrolidin-1-yl]-2-oxo-ethoxy]-2-chloro-phenoxy]-acetyl]-pyrrolidine-2-carboxylic acid tert-butyl ester in 1.5 ml trifluoroacetic acid was stirred for 4 h at room temperature. The solvent was removed in vacuo and the residue suspended in 10 ml ether. The resulting suspension was stirred overnight. Filtration and drying gave 126 mg (quantitative) of the title compound as a white powder. MS m/e (%): 453 (M-H-, 100).

Provenance & Evidence