6-(1,4-Dioza-8-azaspiro[4.5]dec-8-yl)pyridine-3-boronicacid
2-Chloro-3-cyanopyridine-4-boronicacid
(1-(tert-Butoxycarbonyl)-5-(methoxycarbonyl)-1H-pyrrol-2-yl)boronicacid
3-Methoxy-5-methylpyridine-4-boronicacid