反应详情

The product of Example 19A (160 mg, 0.57 mmol) was coupled with t-butyl [4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-carbamate (Frontier, 319 mg, 1 mmol) according to the procedure of Example 18B. The title product was purified by chromatography (SiO2, CH2Cl2:MeOH:NH3H2O, 90:10:1, Rf. 0.20) as solid (150 mg, yield, 67%). 1H NMR (300 MHz, MeOH-d4) δ 1.48-1.63 (m, 10H), 1.65-1.91 (m, 2H), 2.02-2.16 (m, 1H), 2.22-2.30 (m, 1H), 2.75-3.05 (m, 5H), 3.36-3.48 (m, 1H), 5.13-5.21 (m, 1H), 7.54 (s, 4H), 8.78 (s, 2H) ppm. MS (DCl/NH3) m/z 397 (M+H)+.

1. customThe title product was purified by chromatography (SiO2, CH2Cl2:MeOH:NH3H2O, 90:10:1, Rf. 0.20) as solid (150 mg, yield, 67%)