4-[(tert-Butoxycarbonyl)amino]-6-methylpyridine-3-boronicacid
2-(Piperazin-1-yl)pyridine-5-boronicacid
6-(4-Fluorophenyl)pyridine-3-boronicacid
6-[Benzyl(methyl)amino]pyridine-3-boronicacid