6-(3-Oxopropanoyl)pyridine-3-boronicacid
2-tert-Butyloxycarbonylamino-3-methylpyridine-5-boronicacid
6-溴-2,4-二甲基吡啶-3-硼酸
2-Ethoxy-4-methylpyridine-3-boronicacid