4-[(tert-Butoxycarbonyl)amino]pyridine-3-boronicacidpinacolester
4-(Tert-Butoxycarbonyl)pyridine-2-boronic acid pinacol ester
4-Sulfamoylphenylboronic acid, pinacol ester
4-Thiophen-2-ylbenzoic acid methyl ester