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(2007/10/03)2H-pyridine-1,3-dicarboxylic acid 3-methyl ester 1-phenyl ester
phenyl chloroformate
methyl 3-pyridinecarboxylate
5-hydroxy-5,6-dihydro-2H-pyridine-1,3-dicarboxylic acid 1-phenyl ester
5-hydroxy-5,6-dihydro-2H-pyridine-1,3-dicarboxylic acid 3-methyl ester 1-phenyl ester