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. 2015 Mar-Apr;47(2):202–205. doi: 10.4103/0253-7613.153431

Figure 1.

Figure 1

Synthesis of prodrug, a three step process including amino group protection of amino acid using phthaloylation; reaction of acetaminophen with N-protected amino acid and finally the deprotection (DCC=N,N-dicyclohexylcarbodiimide, DMAP=4-dimethylaminopyridine, TFA=Trifluoroacetic acid, DCM=Dichloromethane)