All peptides were synthesized using standard Fmoc/tBu solid-phase chemistry. After assembling the desired peptide sequences, fully protected linear peptides were obtained by cleavage of the peptidyl resin in mildly acidic conditions while protecting the side-chain protecting groups. Fully protected linear peptides were subjected to head-to-tail cyclization in the presence of activation and coupling reagents, followed by complete deprotection resulting in cyclized peptides, as described in the experimental section. All the synthesized cyclic peptides were purified using reverse-phase high-performance liquid chromatography (HPLC) and were found to be >95% pure. High-resolution mass spectrometry (HR-MS) data were obtained in ESI mode. These results confirm the structure of the synthesized peptides. The HPLC purity and HR-MS data of all cyclic peptides have been provided in the supporting information.