Facile Synthesis of Non-Proteinogenic Sulfur-Containing Cyclic Dipeptides and Their Structure-Antioxidant Activity Relationship.

Cyclic peptides are peptidic macrocycles with ring-constrained backbones that have distinct physicochemical and biological properties, with the simplest being cyclic dipeptides. Four cyclic dipeptides, cyclo(Pro-Pro), cyclo(Pip-Pip), cyclo(PrS-PrS),…

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