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S- and 7-Lactams can be prepared in high yield by cyclization of halogenocarboxylic acid amides with an anion exchanger as catalyst . Cyclic peptides can be easily obtained from active peptide esters with a high-molecular ester component ... [Pg.388]

See other pages where Lactams halogenocarboxylic acid is mentioned: [Pg.247] [Pg.236] [Pg.133]

See also in sourсe #XX -- [ Pg.21 ]

See also in sourсe #XX -- [ Pg.16 , Pg.485 ]

See also in sourсe #XX -- [ Pg.14 , Pg.493 ]