反应详情

(R)-2-[2-(2.6-Difluoro-benzenesulfonylamino)-4-iodo-benzoylamino]-3-phenyl-propionic acid. (R)-2-(tert-Butoxycarbonylamino)-3-phenyl-propionic acid was treated as in EXAMPLE 2, Part A, to produce (R)-2-amino-3-phenyl-propionic acid methyl ester hydrochloride as a white solid. This ester was coupled with 2-(2,6-difluoro-benzenesulfonylamino)-4-iodo-benzoic acid as in EXAMPLE 1, Part C. The resulting methyl ester was hydrolyzed as in EXAMPLE 2, Part E, to afford the title compound. HPLC: RT=9.27 min. MS (ESI−): mass calcd. for C22H17F2IN2O5S, 585.99; m/z found, 584/586[M−H]−. 1H NMR (500 MHz, CDCl3): 11.32 (s, 1H), 8.11 (s, 1H), 7.50-7.46 (m, 1H), 7.38-7.28 (m, 4H), 7.16-7.15 (m, 2H), 7.00-6.96 (m, 3H), 6.51 (d, J=7.6, 1H), 5.07-5.03 (m, 1H), 3.34 (dd, J=14.0, 5.6, 1H), 3.25 (dd, J=14.3, 5.3, 1H).