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Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts

[Image: see text] Microbial, mammalian, and plant cells produce and contain secondary metabolites, which typically are soluble in water to prevent cell damage by crystallization. The formation of ion pairs, for example, with carboxylic acids or mineral acids, is a natural blueprint to maintain basic...

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Autores principales: Güntzel, Paul, Schilling, Klaus, Hanio, Simon, Schlauersbach, Jonas, Schollmayer, Curd, Meinel, Lorenz, Holzgrabe, Ulrike
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7409249/
https://www.ncbi.nlm.nih.gov/pubmed/32775923
http://dx.doi.org/10.1021/acsomega.0c02630
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author Güntzel, Paul
Schilling, Klaus
Hanio, Simon
Schlauersbach, Jonas
Schollmayer, Curd
Meinel, Lorenz
Holzgrabe, Ulrike
author_facet Güntzel, Paul
Schilling, Klaus
Hanio, Simon
Schlauersbach, Jonas
Schollmayer, Curd
Meinel, Lorenz
Holzgrabe, Ulrike
author_sort Güntzel, Paul
collection PubMed
description [Image: see text] Microbial, mammalian, and plant cells produce and contain secondary metabolites, which typically are soluble in water to prevent cell damage by crystallization. The formation of ion pairs, for example, with carboxylic acids or mineral acids, is a natural blueprint to maintain basic metabolites in solution. Here, we aim at showing whether the mostly large carboxylates form soluble protic ionic liquids (PILs) with the basic natural product papaverine resulting in enhanced aqueous solubility. The obtained PILs were characterized by (1)H–(15)N HMBC nuclear magnetic resonance (NMR) and in the solid state using X-ray powder diffraction, differential scanning calorimetry, and dissolution measurements. Furthermore, their supramolecular pattern in aqueous solution was studied by means of potentiometric and photometrical solubility, NMR aggregation assay, dynamic light scattering, zeta potential, and viscosity measurements. Thereby, we identified the naturally occurring carboxylic acids, citric acid, malic acid, and tartaric acid, as being appropriate counterions for papaverine and which will facilitate the formation of PILs with their beneficial characteristics, like the improved dissolution rate and enhanced apparent solubility.
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spelling pubmed-74092492020-08-07 Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts Güntzel, Paul Schilling, Klaus Hanio, Simon Schlauersbach, Jonas Schollmayer, Curd Meinel, Lorenz Holzgrabe, Ulrike ACS Omega [Image: see text] Microbial, mammalian, and plant cells produce and contain secondary metabolites, which typically are soluble in water to prevent cell damage by crystallization. The formation of ion pairs, for example, with carboxylic acids or mineral acids, is a natural blueprint to maintain basic metabolites in solution. Here, we aim at showing whether the mostly large carboxylates form soluble protic ionic liquids (PILs) with the basic natural product papaverine resulting in enhanced aqueous solubility. The obtained PILs were characterized by (1)H–(15)N HMBC nuclear magnetic resonance (NMR) and in the solid state using X-ray powder diffraction, differential scanning calorimetry, and dissolution measurements. Furthermore, their supramolecular pattern in aqueous solution was studied by means of potentiometric and photometrical solubility, NMR aggregation assay, dynamic light scattering, zeta potential, and viscosity measurements. Thereby, we identified the naturally occurring carboxylic acids, citric acid, malic acid, and tartaric acid, as being appropriate counterions for papaverine and which will facilitate the formation of PILs with their beneficial characteristics, like the improved dissolution rate and enhanced apparent solubility. American Chemical Society 2020-07-22 /pmc/articles/PMC7409249/ /pubmed/32775923 http://dx.doi.org/10.1021/acsomega.0c02630 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Güntzel, Paul
Schilling, Klaus
Hanio, Simon
Schlauersbach, Jonas
Schollmayer, Curd
Meinel, Lorenz
Holzgrabe, Ulrike
Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts
title Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts
title_full Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts
title_fullStr Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts
title_full_unstemmed Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts
title_short Bioinspired Ion Pairs Transforming Papaverine into a Protic Ionic Liquid and Salts
title_sort bioinspired ion pairs transforming papaverine into a protic ionic liquid and salts
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7409249/
https://www.ncbi.nlm.nih.gov/pubmed/32775923
http://dx.doi.org/10.1021/acsomega.0c02630
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