(2S,4R)-4-hydroxy-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidine-2-carboxylic acid → 4-[2-(2-Isopropylamino-thiazol-4-yl)-7-methoxy-quinolin-4-yloxy]-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of N-Boc-trans-4-hydroxy-L-proline (221 mg, 0.96 mmol) in DMSO was added potassium tert-butoxide (320 mg, 2.9 mmol). After 1 h compound 12 (319 mg, 0.96 mmol) was added and the mixture was stirred at 70° C. for 72 hours. The mixture was diluted with water and extracted with ethyl acetate. The product was used without further purification. Yield 429 mg, 85%.

Provenance & Evidence