Volume 134, Issue 46 e202208580
Forschungsartikel

Synthesis and Physicochemical Properties of Cryptophazane—A Soluble and Functionalizable C1-Symmetrical Cryptophane

Clément Vigier

Clément Vigier

Normandie Univ, UNICAEN, Centre d'Etudes et de Recherche sur le Médicament de Normandie (CERMN), 14000 Caen, France

Institut Blood and Brain @ Caen Normandie (BB@C), Boulevard Henri Becquerel, 14000 Caen, France

These authors contributed equally to this work.

Search for more papers by this author
Dimitri Fayolle

Dimitri Fayolle

Normandie Univ, UNICAEN, Centre d'Etudes et de Recherche sur le Médicament de Normandie (CERMN), 14000 Caen, France

Institut Blood and Brain @ Caen Normandie (BB@C), Boulevard Henri Becquerel, 14000 Caen, France

UMR−S U1237, Normandie Univ, Physiopathology and Imaging of Neurological Disorders (PhIND), 14000 Caen, France

These authors contributed equally to this work.

Search for more papers by this author
Hussein El Siblani

Hussein El Siblani

Normandie Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie (LCS), 14000 Caen, France

Search for more papers by this author
Jana Sopkova - de Oliveira Santos

Jana Sopkova - de Oliveira Santos

Normandie Univ, UNICAEN, Centre d'Etudes et de Recherche sur le Médicament de Normandie (CERMN), 14000 Caen, France

Search for more papers by this author
Frederic Fabis

Frederic Fabis

Normandie Univ, UNICAEN, Centre d'Etudes et de Recherche sur le Médicament de Normandie (CERMN), 14000 Caen, France

Institut Blood and Brain @ Caen Normandie (BB@C), Boulevard Henri Becquerel, 14000 Caen, France

Search for more papers by this author
Thomas Cailly

Corresponding Author

Thomas Cailly

Normandie Univ, UNICAEN, Centre d'Etudes et de Recherche sur le Médicament de Normandie (CERMN), 14000 Caen, France

Institut Blood and Brain @ Caen Normandie (BB@C), Boulevard Henri Becquerel, 14000 Caen, France

Normandie Univ, UNICAEN, IMOGERE, 14000 Caen, France

CHU Côte de Nacre, Department of Nuclear Medicine, 14000 Caen, France

Search for more papers by this author
Emmanuelle Dubost

Corresponding Author

Emmanuelle Dubost

Normandie Univ, UNICAEN, Centre d'Etudes et de Recherche sur le Médicament de Normandie (CERMN), 14000 Caen, France

Institut Blood and Brain @ Caen Normandie (BB@C), Boulevard Henri Becquerel, 14000 Caen, France

UMR−S U1237, Normandie Univ, Physiopathology and Imaging of Neurological Disorders (PhIND), 14000 Caen, France

Search for more papers by this author
In memory of Bernard Rousseau.
First published: 16 September 2022

Abstract

The first example of a cryptophazane, a cryptophane functionalized with a nitrogen atom replacing one of the methylene bridges, is obtained with a 28 % overall yield over 8 steps, through the preparation of a C1-symmetrical aza-cyclotriveratrylene (aza-CTV). Herein, we demonstrate that the introduction of a nitrogen atom on this part of the cryptophane core enhances the solubility in organic media of both the cryptophane and the synthetic intermediates, while presenting the same conformation as known cryptophanes. Cryptophazane was prepared on a multigram scale and easily functionalized. We also investigated its ability to encapsulate xenon atoms using hyperpolarized 129Xe (HP 129Xe) NMR spectroscopy. We found that both its affinity and exchange kinetics were in the appropriate range for applications in 129Xe magnetic resonance imaging (MRI). Combined with the wide range of possible functionalization, this makes cryptophazane an excellent candidate for targeted HP 129Xe MRI.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.