Reaction Steps
N-(5-Bromopentyl)-N-isopropylheptanamide (75 mg, 0.23 mmol) was alkylated with commercial N-(4-hydroxybenzo[d]thiazol-2-yl)acetamide (54 mg, 0.26 mmol) as described above to give analog 30 (43 mg, 42%) as a sticky solid. TLC: EtOAc/hexanes (1:4), Rf˜0.30; 1H NMR (300 MHz, 45/55 mixture of rotamers) δ 11.50 (br s, —NH, 1H), 7.37-7.42 (m, 1H), 7.18-7.26 (m, 1H), 6.84-6.88 (m, 1H), 4.58-4.78 and 4.00-4.10 (m, 1H for two rotamers), 4.02 (t, J=6.3 Hz, 2H), 3.12 (t, J=7.3 Hz, 2H), 2.22-2.45 (m, 5H), 1.82-1.92 (m, 2H), 1.44-1.70 (m, 4H), 1.20-1.40 (m, 8H), 1.11-1.19 (m, 6H), 0.82-0.95 (m, 3H); 13C NMR (75 MHz) δ 173.94, 172.78, 169.40, 169.36, 157.89, 151.62, 138.43, 138.32, 133.91, 133.87, 124.92, 124.85, 114.02, 113.87, 109.66, 108.35, 69.46, 69.08, 48.53, 48.33, 45.94, 43.61, 41.20, 34.26, 34.09, 31.91, 31.88, 31.39, 29.55, 29.45, 29.37, 29.30, 25.88, 25.77, 25.71, 24.43, 24.16, 23.55, 22.77, 21.59, 20.80, 14.28. HRMS (ESI-neg) calcd for C24H36N3O3S [M−1]− 446.2477. found 446.2434.
