4-fluoro-N-((3R,4S)-3-hydroxy-6-(piperazin-1-yl)chroman-4-yl)benzamide
HPLC purity = 97.3% (tR = 5.7 min) by HPLC method 2. ee = 100% at 4.68 min by Chiral HPLC method 2.
Specific rotation: [α]D20 = 23.02 (c = 10, 95% EtOH-5% H2O).
1H NMR (400 MHz, DMSO-d6) δ 8.75 (d, J = 8.2 Hz, 1H), 8.02–7.92 (m, 2H), 7.33–7.22 (m, 2H), 6.80 (dd, J = 8.9, 2.9 Hz, 1H), 6.71–6.60 (m, 2H), 5.36 (d, J = 3.9 Hz, 1H), 4.95 (dd, J = 8.2, 5.2 Hz, 1H), 4.12 (dd, J = 10.4, 1.8 Hz, 1H), 3.95–3.83 (m, 2H), 2.84–2.71 (m, 8H), 2.17 (s, 1H).
13C NMR (DMSO-d6, 100 MHz): δ 165.6, 163.1, 148.3, 146.7, 131.3, 130.7, 122.2, 118.2, 117.3, 116.8, 115.4, 67.5, 66.2, 51.5, 46.1, 40.8.
HRMS (ESI+): calcd. for C20H22FN3O3 (M+1): 372.1718, found 372.1712.
S6
