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Side reactions in the pyroglutamic acid-7-amino-4-methylcoumarin synthesis
International Journal of Peptide and Protein Research
|July 1, 1996
Abstract:
N-Formylpyroglutamic acid-7-amido-4-methylcoumarine and pyroglutamyl-pyroglutamic acid-7-amido-4-methylcoumarin are the major products in the synthesis of pyroglutamic acid-7-amido-4-methylcoumarin by phosphorus pentachloride in dimethylformamide and dicyclohexylcarbodiimide under pyridine activation.