1(2H)-Pyridinecarboxylic acid, 3,6-dihydro-2,6-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-, 1,1-dimethylethyl ester, (2R,6R)-rel-

1(2H)-Pyridinecarboxylic acid, 3,6-dihydro-2,6-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-, 1,1-dimethylethyl ester, (2R,6R)-rel-