Solid-Phase Peptide Macrocyclization and Multifunctionalization via Dipyrrin Construction

Yue Wu, Ho Fai Chau, Waygen Thor, Kaitlin Hao Yi Chan, Xia Ma, Wai Lun Chan (Corresponding Author), Nicholas J. Long, Ka Leung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


We introduce a new and highly efficient synthetic protocol towards multifunctional fluorescent cyclopeptides by solid-phase peptide macrocyclization via dipyrrin construction, with full scope of proteinogenic amino acids and different ring sizes. Various bicyclic peptides can be created by dipyrrin-based crosslinking and double dipyrrin-ring formation. The embedded dipyrrin can be either transformed to fluorescent BODIPY and then utilized as cancer-selective targeted protein imaging probe in vitro, or directly employed as a selective metal sensor in aqueous media. This work provides a valuable addition to the peptide macrocyclization toolbox, and a blueprint for the development of multifunctional dipyrrin linkers in cyclopeptides for a wide range of potential bioapplications.

Original languageEnglish
Pages (from-to)20301-20307
Number of pages7
JournalAngewandte Chemie - International Edition
Issue number37
Publication statusPublished - 6 Sept 2021


  • dipyrrin
  • fluorescent cyclic peptides
  • solid-phase peptide synthesis
  • zinc(II) sensing
  • αβ imaging

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


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