The excess of solvents was removed under reduced pressure

The excess of solvents was removed under reduced pressure. combined organic layers were washed with H2O (3??5.0?ml), dried over Na2SO4, filtered and concentrated to obtain a residue that was purified by silica gel column chromatography eluting with EtOAc/1.8, 7.8), 7.96 (1H, d, 1.8), 9.97 (1H, s, exchange with D2O, N(ESI positive) 232.0 [M?+?H]+. Experimental in… Continue reading The excess of solvents was removed under reduced pressure