1-[2-(4-Amino-3-chloro-benzoylamino)-propionyl]-pyrrolidine-2-carboxylic acid (5-oxo-2-phenethyloxy-tetrahydro-furan-3-yl)-amide → (2-(4-Amino-3-chloro-benzoylamino)-propionyl]-pyrrolidine-2-carboxylic acid (2-cyclohexylmethoxy-5-oxo-tetrahydro-furan-3-yl)-amide

Participants

Reaction Steps

Prepared from 97a and syn-(2-cyclohexylmethoxy-5-oxo-tetrahydro-furan-3-yl)-carbamic acid allyl ester according to the procedure used to prepare 98a to afford 113 mg (56% yield) of the title compound. 1H-NMR-(500 MHz, CDCl3): δ 0.70-1.35 (m, 5H), 1.35-1.90 (m, 8H), 1.90-2.20 (m, 3H), 2.30-2.60 (m, H), 2.80-3.00 (m, H), 3.15-3.80 (m, 4H), 4.28-4.75 (m, 4H), 4.89-4.93 (m, H), 5.42 (d, H), 6.74 (d, H), 6.87 (d, H), 7.30 (d, H), 7.51-7.53 (m, H), 7.74 (d, H); retention time on analytical HPLC: 12.02 min; LC-MS: m/z=535 (M+H+).

Provenance & Evidence