“…Known compound, white solid, mp: 99–100 °C; purification by column chromatography on silica gel (CH 2 Cl 2 /MeOH = 50/1), 343 mg, 64% yield, R f = 0.54 (CH 2 Cl 2 /MeOH = 20:1). IR (in KBr): 2998, 2905, 1643, 1562, 1416, 1391, 1204, 1122, 1024, 912, 823, 764, 685, 625 cm –1 .…”