Reaction Steps
Following a similar procedure to that described in example 1 but using 2-(4-cyanophenyl)-4-methylthiazole-5-carboxylic acid (reference example 24) and (2R,3R)-3-amino-2-(2,4-difluorophenyl)-1-(1H-imidazol-1 -yl)-2-butanol (75 mg, 0.28 mmol, obtained following the general procedure described in J. Org. Chem., 1995, 60, 3000-3012) in DMF (5 mL) the title compound was obtained as a white solid: mp 126°-128° C.; 1H NMR (300 MHz, CDCl3) δ (TMS) 8.05 (dt, Jt =2, Jd =8.4, 2H, arom), 7.50 (dt, Jt =2, Jd =8.4, 2H, arom), 7.47 (dt, Jd =6.5, Jt =8.8, 1H, arom), 7.24 (s, 1H, imidazole), 6.84.6 (m, 2H, arom), 6.52 (br d, J=9.5, 1H, NH, 6.51 (s, 1H, imidazole), 6.32 (s, 1H, imidazole), 4.85 (br quint, J=7, 1H, CHMe), 4.68 (d, J=14.5, 1H, ImCH(H)), 4.29 (d, J=14.5, 1H, ImCH(H)), 2.80 (s, 3H, Me-thiazole), 1.06 (d, J=6.8, 3H, MeCH); MS 227 (acyl group, C12H7N2OS), 223 (Im--CH2COHAr, C11H9F2N2O); [α]D =-20.4° (c 1, CHCl3). Analysis calculated for C25H21F2N5O2S: C 60.84; H 4.29; N 14.19; S 6.50 Found: C 60.85; H 4.31; N 13.75; S 6.18.
