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4-[5-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-PYRIDIN-2-YL]-PIPERAZINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER 6-(Morpholin-4-yl)pyridine-3-boronic acid pinacol ester 6-(PYRROLIDIN-1-YL)PYRIDINE-3-BORONIC ACID, PINACOL ESTER 1-METHYL-5-[4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PYRIDIN-2-YL]PIPERAZINE 2-(tert-butoxycarbonylamino)pyridine-5-boronic acid, pinacol ester