glycine ( gly ) , alanine ( ala ) , valine ( val ) , leucine ( leu ) , isoleucine ( ile ) , phenylalanine ( phe ) , and lysine ( lys ) esters of metronidazole were synthesized using dicyclohexylcarbodiimide ( dcc ) coupling or a mixed-anhydride route , using tert-butyloxycarbonyl ( tert-boc ) amino acids .
C0001898
alanine
C0002520
amino acids