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Werner M, Pampel J, Pham TL, Thomas F. Late‐Stage Functionalisation of Peptides on the Solid Phase by an Iodination‐Substitution Approach. Chemistry 2022; 28:e202201339. [PMID: 35700354 PMCID: PMC9545490 DOI: 10.1002/chem.202201339] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Indexed: 11/20/2022]
Abstract
The functionalisation of peptides at a late synthesis stage holds great potential, for example, for the synthesis of peptide pharmaceuticals, fluorescent biosensors or peptidomimetics. Here we describe an on‐resin iodination‐substitution reaction sequence on homoserine that is also suitable for peptide modification in a combinatorial format. The reaction sequence is accessible to a wide range of sulfur nucleophiles with various functional groups including boronic acids, hydroxy groups or aromatic amines. In this way, methionine‐like thioethers or thioesters and thiosulfonates are accessible. Next to sulfur nucleophiles, selenols, pyridines and carboxylic acids were successfully used as nucleophiles, whereas phenols did not react. The late‐stage iodination‐substitution approach is not only applicable to short peptides but also to the more complex 34‐amino‐acid WW domains. We applied this strategy to introduce 7‐mercapto‐4‐methylcoumarin into a switchable ZnII responsive WW domain to design an iFRET‐based ZnII sensor.
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Affiliation(s)
- Marius Werner
- Institute of Organic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre for Advanced Materials (CAM) Heidelberg University Im Neuenheimer Feld 225 69120 Heidelberg Germany
- Department of Medicinal Chemistry Institute of Pharmacy and Molecular Biotechnology (IPMB) Heidelberg University Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Julius Pampel
- Department of Chemical Biology Max Planck Institute for Medical Research Jahnstraße 29 69120 Heidelberg Germany
| | - Truc Lam Pham
- Institute of Organic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre for Advanced Materials (CAM) Heidelberg University Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Franziska Thomas
- Institute of Organic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre for Advanced Materials (CAM) Heidelberg University Im Neuenheimer Feld 225 69120 Heidelberg Germany
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Karas JA, Patil NA, Tailhades J, Sani MA, Scanlon DB, Forbes BE, Gardiner J, Separovic F, Wade JD, Hossain MA. Total Chemical Synthesis of an Intra-A-Chain Cystathionine Human Insulin Analogue with Enhanced Thermal Stability. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- John A. Karas
- The Florey Institute of Neuroscience and Mental Health; The University of Melbourne; Melbourne VIC 3010 Australia
- School of Chemistry; Bio21 Institute; University of Melbourne; Melbourne VIC 3010 Australia
- CSIRO; Materials Science and Engineering; Clayton VIC 3010 Australia
| | - Nitin A. Patil
- The Florey Institute of Neuroscience and Mental Health; The University of Melbourne; Melbourne VIC 3010 Australia
- School of Chemistry; Bio21 Institute; University of Melbourne; Melbourne VIC 3010 Australia
| | - Julien Tailhades
- The Florey Institute of Neuroscience and Mental Health; The University of Melbourne; Melbourne VIC 3010 Australia
| | - Marc-Antoine Sani
- School of Chemistry; Bio21 Institute; University of Melbourne; Melbourne VIC 3010 Australia
| | - Denis B. Scanlon
- Department of Chemistry; University of Adelaide; Adelaide SA 5005 Australia
| | - Briony E. Forbes
- School of Medicine; Flinders University; Bedford Park SA 5042 Australia
| | - James Gardiner
- CSIRO; Materials Science and Engineering; Clayton VIC 3010 Australia
| | - Frances Separovic
- School of Chemistry; Bio21 Institute; University of Melbourne; Melbourne VIC 3010 Australia
| | - John D. Wade
- The Florey Institute of Neuroscience and Mental Health; The University of Melbourne; Melbourne VIC 3010 Australia
- School of Chemistry; Bio21 Institute; University of Melbourne; Melbourne VIC 3010 Australia
| | - Mohammed Akhter Hossain
- The Florey Institute of Neuroscience and Mental Health; The University of Melbourne; Melbourne VIC 3010 Australia
- School of Chemistry; Bio21 Institute; University of Melbourne; Melbourne VIC 3010 Australia
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Karas JA, Patil NA, Tailhades J, Sani MA, Scanlon DB, Forbes BE, Gardiner J, Separovic F, Wade JD, Hossain MA. Total Chemical Synthesis of an Intra-A-Chain Cystathionine Human Insulin Analogue with Enhanced Thermal Stability. Angew Chem Int Ed Engl 2016; 55:14743-14747. [PMID: 27761974 DOI: 10.1002/anie.201607101] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Indexed: 12/17/2022]
Abstract
Despite recent advances in the treatment of diabetes mellitus, storage of insulin formulations at 4 °C is still necessary to minimize chemical degradation. This is problematic in tropical regions where reliable refrigeration is not ubiquitous. Some degradation byproducts are caused by disulfide shuffling of cystine that leads to covalently bonded oligomers. Consequently we examined the utility of the non-reducible cystine isostere, cystathionine, within the A-chain. Reported herein is an efficient method for forming this mimic using simple monomeric building blocks. The intra-A-chain cystathionine insulin analogue was obtained in good overall yield, chemically characterized and demonstrated to possess native binding affinity for the insulin receptor isoform B. It was also shown to possess significantly enhanced thermal stability indicating potential application to next-generation insulin analogues.
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Affiliation(s)
- John A Karas
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, 3010, Australia.,School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia.,CSIRO, Materials Science and Engineering, Clayton, VIC, 3010, Australia
| | - Nitin A Patil
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, 3010, Australia.,School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Julien Tailhades
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Marc-Antoine Sani
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Denis B Scanlon
- Department of Chemistry, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Briony E Forbes
- School of Medicine, Flinders University, Bedford Park, SA, 5042, Australia
| | - James Gardiner
- CSIRO, Materials Science and Engineering, Clayton, VIC, 3010, Australia
| | - Frances Separovic
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - John D Wade
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, 3010, Australia.,School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Mohammed Akhter Hossain
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, 3010, Australia.,School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
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