1
|
Pérez-Bonilla M, Sánchez-Hidalgo M, González I, Oves-Costales D, Martín J, Murillo-Alba J, Tormo JR, Cho A, Byun SY, No JH, Shum D, Ioset JR, Genilloud O, Reyes F. Madurastatins with Imidazolidinone Rings: Natural Products or Side-Reaction Products from Extraction Solvents? Int J Mol Sci 2023; 25:301. [PMID: 38203471 PMCID: PMC10779116 DOI: 10.3390/ijms25010301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Madurastatins are a group of pentapeptides containing an oxazoline moiety, and, in a few cases, an imidazolidinone ring as an additional structural feature. In our search for new potential antiparasitic metabolites from natural sources, we studied the acetone extracts from a culture of Actinomadura sp. CA-135719. The LC/HRMS analysis of this extract identified the presence of the known madurastatins C1 (1), D1 (4), and D2 (5) together with additional members of the family that were identified as the new madurastatins H2 (2) and 33-epi-D1 (3) after isolation and spectroscopic analysis. The planar structures of the new compounds were established by HRMS, ESI-qTOF-MS/MS, and 1D and 2D NMR data, and their absolute configuration was proposed using Marfey's and bioinformatic analyses of the biosynthetic gene cluster (BGC). A revision of the absolute configuration of madurastatins D1 and D2 is proposed. Additionally, madurastatins containing imidazolidinone rings are proved to be artifacts originating during acetone extraction of the bacterial cultures.
Collapse
Affiliation(s)
- Mercedes Pérez-Bonilla
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Marina Sánchez-Hidalgo
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Ignacio González
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Daniel Oves-Costales
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Jesús Martín
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - José Murillo-Alba
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - José R. Tormo
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Ahreum Cho
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - Soo-Young Byun
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - Joo-Hwan No
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - David Shum
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - Jean-Robert Ioset
- Drugs for Neglected Diseases Initiative, 15 Chemin Camille-Vidart, 1202 Geneva, Switzerland;
| | - Olga Genilloud
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Fernando Reyes
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| |
Collapse
|
2
|
Lamboley S, Vuichoud B, de Saint Laumer JY, Herrmann A. Release of Volatile Cyclopentanone Derivatives from Imidazolidin-4-One Profragrances in a Fabric Softener Application. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28010382. [PMID: 36615574 PMCID: PMC9822342 DOI: 10.3390/molecules28010382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 12/27/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023]
Abstract
Imidazolidin-4-ones were investigated as hydrolytically cleavable profragrances to increase the long-lastingness of perfume perception in a fabric softener application. The reaction of different amino acid amides with 2-alkyl- or 2-alkenylcyclopentanones as the model fragrances to be released afforded the corresponding bi- or tricyclic imidazolidin-4-ones as mixtures of diastereoisomers, which were separated by column chromatography. In polar solution, the different stereoisomers equilibrated under thermodynamic conditions to form mixtures with constant isomeric distributions, as shown by NMR spectroscopy. Dynamic headspace analysis on dry cotton demonstrated the controlled fragrance release from the precursors in practical application. Under non-equilibrium conditions (continuous evaporation of the fragrance) and depending on the structure and stereochemistry of the profragrances, the recorded headspace concentrations of the fragrance released from the precursors increased by a factor of 2 up to 100 with respect to the unmodified reference. Prolinamide-based precursors released the highest amount of fragrance and were thus found to be particularly suitable for prolonging the evaporation of cyclopentanone-derived fragrances on a dry cotton surface.
Collapse
|
3
|
An Effective and Safe Enkephalin Analog for Antinociception. Pharmaceutics 2021; 13:pharmaceutics13070927. [PMID: 34206631 PMCID: PMC8308721 DOI: 10.3390/pharmaceutics13070927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/14/2021] [Accepted: 06/18/2021] [Indexed: 11/17/2022] Open
Abstract
Opioids account for 69,000 overdose deaths per annum worldwide and cause serious side effects. Safer analgesics are urgently needed. The endogenous opioid peptide Leu-Enkephalin (Leu-ENK) is ineffective when introduced peripherally due to poor stability and limited membrane permeability. We developed a focused library of Leu-ENK analogs containing small hydrophobic modifications. N-pivaloyl analog KK-103 showed the highest binding affinity to the delta opioid receptor (68% relative to Leu-ENK) and an extended plasma half-life of 37 h. In the murine hot-plate model, subcutaneous KK-103 showed 10-fold improved anticonception (142%MPE·h) compared to Leu-ENK (14%MPE·h). In the formalin model, KK-103 reduced the licking and biting time to ~50% relative to the vehicle group. KK-103 was shown to act through the opioid receptors in the central nervous system. In contrast to morphine, KK-103 was longer-lasting and did not induce breathing depression, physical dependence, and tolerance, showing potential as a safe and effective analgesic.
Collapse
|
4
|
Barlow N, Chalmers DK, Williams-Noonan BJ, Thompson PE, Norton RS. Improving Membrane Permeation in the Beyond Rule-of-Five Space by Using Prodrugs to Mask Hydrogen Bond Donors. ACS Chem Biol 2020; 15:2070-2078. [PMID: 32628005 DOI: 10.1021/acschembio.0c00218] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A wide range of drug targets can be effectively modulated by peptides and macrocycles. Unfortunately, the size and polarity of these compounds prevents them from crossing the cell membrane to reach target sites in the cell cytosol. As such, these compounds do not conform to standard measures of drug-likeness and exist in beyond the rule-of-five space. In this work, we investigate whether prodrug moieties that mask hydrogen bond donors can be applied in the beyond rule-of-five domain to improve the permeation of macrocyclic compounds. Using a cyclic peptide model, we show that masking hydrogen bond donors in the natural polar amino acid residues (His, Ser, Gln, Asn, Glu, Asp, Lys, and Arg) imparts membrane permeability to the otherwise impermeable parent molecules, even though the addition of the masking group increases the overall compound molecular weight and the number of hydrogen bond acceptors. We demonstrate this strategy in PAMPA and Caco2 membrane permeability assays and show that masking with groups that reduce the number of hydrogen-bond donors at the cost of additional mass and hydrogen bond acceptors, a donor-acceptor swap, is effective.
Collapse
Affiliation(s)
- Nicholas Barlow
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - David K. Chalmers
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Billy J. Williams-Noonan
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Philip E. Thompson
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Raymond S. Norton
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| |
Collapse
|
5
|
Zhu Z, Lv X, Anesini JE, Seidel D. Synthesis of Polycyclic Imidazolidinones via Amine Redox-Annulation. Org Lett 2017; 19:6424-6427. [PMID: 29144764 PMCID: PMC5715285 DOI: 10.1021/acs.orglett.7b03309] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Indexed: 11/30/2022]
Abstract
α-Ketoamides undergo redox-annulations with cyclic secondary amines, such as 1,2,3,4-tetrahydroisoquinoline, pyrrolidine, piperidine, and morpholine. Catalytic amounts of benzoic acid significantly accelerate these transformations. This approach provides polycyclic imidazolidinone derivatives in typically good yields.
Collapse
Affiliation(s)
- Zhengbo Zhu
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Xin Lv
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
- Department
of Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic
of China
| | - Jason E. Anesini
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
| |
Collapse
|
6
|
A new procedure for N1-alkylation of imidazolidin-4-ones and its NMR characterization. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
Trachsel A, Buchs B, Godin G, Crochet A, Fromm KM, Herrmann A. Preparation of Imidazolidin-4-ones and Their Evaluation as Hydrolytically Cleavable Precursors for the Slow Release of Bioactive Volatile Carbonyl Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200081] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
8
|
Vale N, Prudêncio M, Marques CA, Collins MS, Gut J, Nogueira F, Matos J, Rosenthal PJ, Cushion MT, do Rosário VE, Mota MM, Moreira R, Gomes P. Imidazoquines as antimalarial and antipneumocystis agents. J Med Chem 2009; 52:7800-7. [PMID: 19799426 PMCID: PMC2788672 DOI: 10.1021/jm900738c] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Peptidomimetic imidazolidin-4-one derivatives of primaquine (imidazoquines) recently displayed in vitro activity against blood schizonts of a chloroquine-resistant strain of Plasmodium falciparum. Preliminary studies with a subset of such imidazoquines showed them to both block transmission of P. berghei malaria from mouse to mosquito and be highly stable toward hydrolysis at physiological conditions. This prompted us to have deeper insight into the activity of imidazoquines against both Plasmodia and Pneumocystis carinii, on which primaquine is also active. Full assessment of the in vivo transmission-blocking activity of imidazoquines, in vitro tissue-schizontocidal activity on P. berghei-infected hepatocytes, and in vitro anti-P. carinii activity is now reported. All compounds were active in these biological assays, with generally lower activity than the parent drug. However, imidazoquines' stability against both oxidative deamination and proteolytic degradation suggest that they will probably have higher oral bioavailability and lower hematotoxicity than primaquine, which might translate into higher therapeutic indexes.
Collapse
Affiliation(s)
- Nuno Vale
- CIQUP – Centro de Investigação em Química da Universidade do Porto, Departamento de Química, Faculdade de Ciências, Universidade do Porto, P-4169-007 Porto, Portugal
| | - Miguel Prudêncio
- Unidade de Malária, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, P-1649-028 Lisboa, Portugal
| | - Catarina A. Marques
- Unidade de Malária, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, P-1649-028 Lisboa, Portugal
| | - Margaret S. Collins
- Research Services, Veterans Affairs Medical Center, Cincinnati, OH 45220, USA
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati, OH 45267-0560, USA
| | - Jiri Gut
- Department of Medicine, San Francisco General Hospital, University of California, CA 94143-0811, USA
| | - Fátima Nogueira
- Centro de Malária e Outras Doenças Tropicais, IHMT - Universidade Nova de Lisboa, P-1349-008 Lisboa, Portugal
| | - Joana Matos
- CIQUP – Centro de Investigação em Química da Universidade do Porto, Departamento de Química, Faculdade de Ciências, Universidade do Porto, P-4169-007 Porto, Portugal
| | - Philip J. Rosenthal
- Department of Medicine, San Francisco General Hospital, University of California, CA 94143-0811, USA
| | - Melanie T. Cushion
- Research Services, Veterans Affairs Medical Center, Cincinnati, OH 45220, USA
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati, OH 45267-0560, USA
| | - Virgílio E. do Rosário
- Centro de Malária e Outras Doenças Tropicais, IHMT - Universidade Nova de Lisboa, P-1349-008 Lisboa, Portugal
| | - Maria M. Mota
- Unidade de Malária, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, P-1649-028 Lisboa, Portugal
| | - Rui Moreira
- iMed.UL, CECF, Faculdade de Farmácia, Universidade de Lisboa, P-1600-083 Lisboa, Portugal
| | - Paula Gomes
- CIQUP – Centro de Investigação em Química da Universidade do Porto, Departamento de Química, Faculdade de Ciências, Universidade do Porto, P-4169-007 Porto, Portugal
| |
Collapse
|
9
|
Chen X, Wei H, Chen Y, Li X. A Convenient Synthesis of Imidazolidin-4-onesviaDomino Reactions. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
10
|
Vale N, Matos J, Moreira R, Gomes P. Electrospray ionization mass spectrometry as a valuable tool in the characterization of novel primaquine peptidomimetic derivatives. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2009; 15:627-640. [PMID: 19679943 DOI: 10.1255/ejms.1011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Novel primaquine-derived antimalarials have been extensively characterized by electrospray ionization-ion trap mass spectrometry (ESI-MS). Experiments by in-source collision-induced dissociation (CID) in the nozzle- skimmer region (NSR) or by tandem-MS are shown to be most valuable tools for the physicochemical characterization of these 8-aminoquinolinic drugs that also bear the biologically relevant imidazolidin-4-one scaffold. It was possible to find parallelism between compound stability in the NSR and its reactivity towards hydrolysis at physiological pH and T. Moreover, tandem-MS fragmentation patterns were characteristic for each family, providing a means for structural distinction of isomers and allowing to find interesting correlations between the relative abundance of particular fragments and relevant structure-activity determinants, such as Charton steric parameter, v. In conclusion, this work provides solid grounds to establish ESI-MS as a key tool for the physicochemical characterization of biopharmaceuticals bearing the 8-aminoquinoline and/or the imidazolidin-4-one moieties.
Collapse
Affiliation(s)
- Nuno Vale
- Centro de Investigação em Química da Universidade do Porto, Departamento de Química, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | | | | | | |
Collapse
|
11
|
Vale N, Matos J, Moreira R, Gomes P. Electrospray ionization-ion trap mass spectrometry study of PQAAPro and PQProAA mimetic derivatives of the antimalarial primaquine. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2008; 19:1476-1490. [PMID: 18657994 DOI: 10.1016/j.jasms.2008.06.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 06/20/2008] [Accepted: 06/20/2008] [Indexed: 05/26/2023]
Abstract
Electrospray ionization-ion trap mass spectrometry (ESI-MS) of imidazolidin-4-one peptidomimetic derivatives of the antimalarial drug primaquine (PQ) is reported. These compounds contain the imidazolidin-4-one moiety either at the N- or the C-terminal of a dipeptide backbone, thus respectively mimicking PQ-Amino Acid-Proline (PQAAPro) and PQProAA derivatives of PQ. Both the peptidomimetics and precursors previously developed by us are promising drug candidates, as they were found to be active against rodent Plasmodium berghei malaria and Pneumocystis carinii pneumonia. Collision-induced dissociation (CID) and tandem-mass spectra (MS) of the title compounds, and fragmentation pathways thereof, led to the following findings: (1) CID patterns present some parallelism with the reactivity towards hydrolysis previously found for the same or related compounds; (2) a positional shift of the imidazolidin-4-one ring is reflected on both degree and pathways of fragmentation, which makes tandem-MS a key tool for differentiation of imidazolidin-4-one isomers; (3) the major MS/MS fragmentation of PQProAA mimetics involves release of a neutral diketopiperazine (DKP), in parallel to the "diketopiperazine pathway" described in tandem-MS studies of oligopeptides; (4) the relative abundance of a major fragment in tandem-MS spectra is inversely correlated with the size of the N-terminal AA in PQProAA mimetics. Overall, this work embodies an original and valuable contribution towards a deeper insight into the molecular properties of novel antimalarials, which can be viewed as representative of both the 8-aminoquinoline and, especially, the imidazolidin-4-one structural classes.
Collapse
Affiliation(s)
- Nuno Vale
- CIQUP, Chemistry Department, Faculty of Sciences, University of Porto, Porto, Portugal
| | | | | | | |
Collapse
|
12
|
Vale N, Matos J, Gut J, Nogueira F, do Rosário V, Rosenthal PJ, Moreira R, Gomes P. Imidazolidin-4-one peptidomimetic derivatives of primaquine: Synthesis and antimalarial activity. Bioorg Med Chem Lett 2008; 18:4150-3. [DOI: 10.1016/j.bmcl.2008.05.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2008] [Revised: 05/16/2008] [Accepted: 05/20/2008] [Indexed: 11/27/2022]
|
13
|
Ferraz R, Gomes JRB, Oliveira ED, Moreira R, Gomes P. Unanticipated Stereoselectivity in the Reaction of Primaquine α-Aminoamides with Substituted Benzaldehydes: A Computational and Experimental Study. J Org Chem 2007; 72:4189-97. [PMID: 17474780 DOI: 10.1021/jo0703202] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Imidazolidin-4-ones are commonly employed as skeletal modifications in bioactive oligopeptides, either as proline surrogates or for protection of the N-terminal amino acid against aminopeptidase- and endopeptidase-catalyzed hydrolysis. Imidazolidin-4-one synthesis usually involves the reaction of an alpha-aminoamide moiety with a ketone or an aldehyde to yield an imine, followed by intramolecular cyclization. We have unexpectedly found that imidazolidin-4-one formation is stereoselective when benzaldehydes containing o-carboxyl or o-methoxycarbonyl substituents are reacted with alpha-aminoamide derivatives of the antimalarial drug primaquine. A systematic computational and experimental study on the stereoselectivity of imidazolidin-4-one formation from primaquine alpha-aminoamides and various substituted benzaldehydes has been carried out, and they have allowed us to conclude that intramolecular hydrogen-bonds involving the C=O oxygen of the o-substituent play a crucial role.
Collapse
Affiliation(s)
- Ricardo Ferraz
- Centro de Investigação em Química (UP), Departamento de Química, Faculdade de Ciências, Universidade do Porto, Rua Campo Alegre, 687, P-4169-007 Porto, Portugal
| | | | | | | | | |
Collapse
|
14
|
Chambel P, Capela R, Lopes F, Iley J, Morais J, Gouveia L, Gomes JR, Gomes P, Moreira R. Reactivity of imidazolidin-4-one derivatives of primaquine: implications for prodrug design. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.08.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
15
|
Araújo MJ, Bom J, Capela R, Casimiro C, Chambel P, Gomes P, Iley J, Lopes F, Morais J, Moreira R, de Oliveira E, do Rosário V, Vale N. Imidazolidin-4-one derivatives of primaquine as novel transmission-blocking antimalarials. J Med Chem 2005; 48:888-92. [PMID: 15689174 DOI: 10.1021/jm0494624] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Imidazolidin-4-one derivatives of primaquine were synthesized as potential double prodrugs of the parent drug. The title compounds inhibit the development of the sporogonic cycle of Plasmodium berghei, affecting the appearance of oocysts in the midguts of the mosquitoes. The imidazolidin-4-ones are very stable, both in human plasma and in pH 7.4 buffer, indicating that they are active per se. Thus, imidazolidin-4-ones derived from 8-aminoquinolines represent a new entry in antimalarial structure-activity relationships.
Collapse
Affiliation(s)
- Maria João Araújo
- CIQUP, Department of Chemistry, Faculty of Sciences, University of Oporto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Larsen SW, Ankersen M, Larsen C. Kinetics of degradation and oil solubility of ester prodrugs of a model dipeptide (Gly-Phe). Eur J Pharm Sci 2005; 22:399-408. [PMID: 15265509 DOI: 10.1016/j.ejps.2004.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2003] [Revised: 04/06/2004] [Accepted: 04/21/2004] [Indexed: 10/26/2022]
Abstract
Oil-based depot formulations may constitute a future delivery method for small peptides. Thus, a requirement is attainment of sufficient oil solubility for such active compounds. A model dipeptide (Gly-Phe) has been converted into lipophilic prodrugs by esterification at the C-terminal carboxylic acid group. The decomposition kinetics of octyl ester of Gly-Phe (IV) has been investigated at pH 7.4 (37 degrees C) and IV was shown to degrade by first-order kinetics via two parallel pathways (1) intramolecular aminolysis resulting in formation of a 2,5-diketopiperazine and (2) hydrolysis of the ester bond producing the dipeptide. The cyclisation reaction was dominating in the decomposition of methyl (II) butyl (III) octyl (IV) decyl (V) and dodecyl (VI) esters of Gly-Phe at pH 7.4. However, this degradation pathway was almost negligible for pH below 6. During degradation of the dipeptide esters in 80% human plasma pH 7.4 (37 degrees C) a minimal amount of cyclo(-Gly-Phe) was formed. A faster degradation of the esters in 80% human plasma pH 7.4 compared to those in aqueous solution pH 7.4 was suggested to be due to fast cleavage of the peptide bond. Low oil solubilities for Gly-Phe and the hydrochlorides of the dipeptide esters III and VI were observed. Although the solubility of Gly-Phe in oil solutions was enhanced by hydrophobic ion pairing with sodium decyl sulfonate the oil solubility was still less than 1 mg Gly-Phe/ml. By addition of a solubiliser, 10% N,N-dimethylacetamide (DMA), to Viscoleo the solubility of the HIP complexes increased significantly. The present study indicates that sufficient oil solubility might only be obtained for relatively small peptides by using the prodrug approach in combination with solubility enhancing organic solvents like DMA.
Collapse
Affiliation(s)
- Susan Weng Larsen
- Department of Pharmaceutics, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
| | | | | |
Collapse
|
17
|
Larsen SW, Sidenius M, Ankersen M, Larsen C. Kinetics of degradation of 4-imidazolidinone prodrug types obtained from reacting prilocaine with formaldehyde and acetaldehyde. Eur J Pharm Sci 2004; 20:233-40. [PMID: 14550890 DOI: 10.1016/s0928-0987(03)00198-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The kinetics of decomposition of 4-imidazolidinone prodrug types obtained by reacting prilocaine (I) with formaldehyde and acetaldehyde has been studied in aqueous solution in the pH range 1-7.4 at 60 and 37 degrees C, respectively. At pH<5 the hydrolysis of the derivative derived from formaldehyde (II) to yield I obeyed apparent first-order kinetics. At higher pH, the decomposition reactions proceeded to an equilibrium and the reactions could be described by first- and second-order reversible kinetics. A plot of the logarithm of the apparent first-order rate constants for hydrolysis of II against pH resulted in a sigmoidal-shaped pH-rate profile characteristic for the hydrolysis of many N-Mannich bases. A half-life at pH 7.4 (60 degrees C) of 6.9h for compound II was calculated. Compared to II the 4-imidazolidinone derived from acetaldehyde (III) exhibited enhanced instability in aqueous buffer solutions. The decomposition was followed at 37 degrees C monitoring the decrease in concentration of intact (III). At acidic pH the reactions displayed strict first-order kinetics and the disappearance of III was accompanied by a concomitant formation of I. At pH 7.4, the rate data also applied reasonably well to first-order kinetics despite the observation that small amounts of III was formed at pH 7.4 from a solution containing equimolar concentrations of acetaldehyde and prilocaine (10(-4)M). In case of III, a bell-shaped pH-rate profile was obtained by plotting the logarithm of the pseudo-first-order rate constants against pH indicating the involvement of a kinetically significant intermediate in the reaction pathway and a change of the rate-limiting step in the overall reaction with pH. For the stability studies performed at pH 6.9 and 7.4 product analysis revealed that parallel to formation of (I) an unknown compound (X) emerged. Compared to III, compound X is hydrolysed to give I at a slower rate (t(50%)=30 h at 37 degrees C). Based on LC-MS data it is suggested that (X) is an isomeric form of III, which may exist in four diastereomeric forms. Thus, at physiological pH an initial relatively fast regeneration of I from III is to be expected followed by a slower drug activation resulting from hydrolysis of the isomeric form of III.
Collapse
Affiliation(s)
- Susan Weng Larsen
- Department of Pharmaceutics, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | | | | | | |
Collapse
|
18
|
Gomes P, Araújo MJ, Rodrigues M, Vale N, Azevedo Z, Iley J, Chambel P, Morais J, Moreira R. Synthesis of imidazolidin-4-one and 1H-imidazo[2,1-a]isoindole-2,5(3H,9bH)-dione derivatives of primaquine: scope and limitations. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.04.077] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Anderson WB, Board PG, Anders MW. Glutathione Transferase Zeta-Catalyzed Bioactivation of Dichloroacetic Acid: Reaction of Glyoxylate with Amino Acid Nucleophiles. Chem Res Toxicol 2004; 17:650-62. [PMID: 15144222 DOI: 10.1021/tx034099+] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dichloroacetic acid (DCA) is a drinking water contaminant, a therapeutic agent, and a rodent carcinogen. Glutathione transferase zeta (GSTZ1-1) catalyzes the biotransformation of a range of alpha-haloalkanoates and the cis-trans isomerization of maleylacetoacetate. GSTZ1-1 catalyzes the bioactivation of fluorine-lacking dihaloacetates to S-(alpha-halocarboxymethyl)glutathione, a reactive intermediate that covalently modifies and inactivates the enzyme or is hydrolyzed to glyoxylate. The purpose of this study was to examine the GSTZ1-1-catalyzed bioactivation of DCA, including the reaction of DCA-derived glyoxylate with amino acid nucleophiles and the characterization of the structures and kinetics of adduct formation by LC/MS. The binding of [1-(14)C]DCA-derived label to bovine serum albumin required both GSTZ1-1 and GSH, whereas the binding to dialyzed rat liver cytosolic protein was increased in the presence of GSH. Studies with model peptides (antiflammin-2 and IL-8 inhibitor) indicated that glyoxylate, rather than S-(alpha-chlorocarboxymethyl)glutathione, was the reactive species that modified amino acid nucleophiles. Both addition (+74 Da) and addition-elimination (+56 Da) adducts of glyoxylic acid were observed. Addition adducts (+74 Da) could not be characterized completely by mass spectrometry, whereas addition-elimination adducts (+56 Da) were characterized as 2-carboxy-4-imidazolidinones. 2-Carboxy-4-imidazolidinones were formed by the rapid equilibrium reaction of glyoxylate with the N-terminal amino group of antiflammin-2 to give an intermediate carbinolamine (K(eq) = 0.63 mM(-1)), which slowly eliminated water to give an intermediate imine (k(2) = 0.067 hour(-1)), which rapidly cyclized to give the 2-carboxy-4-imidazolidinone. Glucose 6-phosphate dehydrogenase was inactivated partially by glyoxylate when reactants were reduced with sodium borodeuteride, which may indicate that glyoxylate reacts with selective lysine epsilon-amino groups. The results of the present study demonstrate that GSTZ1-1 catalyzes the bioactivation of DCA to the reactive metabolite glyoxylate. The reaction of glyoxylate with cellular macromolecules may be associated with the multiorgan toxicity of DCA.
Collapse
Affiliation(s)
- Wayne B Anderson
- Department of Pharmacology and Physiology, University of Rochester Medical Center, 601 Elmwood Avenue, Box 711, Rochester, New York 14642, USA
| | | | | |
Collapse
|
20
|
Heck AJ, Bonnici PJ, Breukink E, Morris D, Wills M. Modification and inhibition of vancomycin group antibiotics by formaldehyde and acetaldehyde. Chemistry 2001; 7:910-6. [PMID: 11288883 DOI: 10.1002/1521-3765(20010216)7:4<910::aid-chem910>3.0.co;2-u] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
It is shown that several vancomycin group antibiotics (vancomycin, eremomycin, and avoparcin) undergo spontaneous chemical modifications when kept at room temperature at neutral pH in aqueous solutions containing traces of formaldehyde or acetaldehyde. This chemical modification predominantly results in a mass increase of 12 Da in the reaction with formaldehyde and 26 Da in the case of acetaldehyde. By using tandem mass spectrometry the modification can unambiguously be identified as originating from the formation of a ring-closed 4-imidazolidinone moiety at the N-terminus of the glycopeptide antibiotics, that is, near the receptor binding pocket of the glycopeptide antibiotics. Bioaffinity mass spectrometry shows that this ring-closure results in a dramatically decreased affinity for the peptidoglycan-mimicking D-alanyl-D-alanine receptor. Additionally, in vitro inhibition measurements on two different strains of bacteria have revealed that the modified antibiotics display reduced antibacterial activity. The ring-closure is also shown to have a dissociative effect on the dimerization of the vancomycin-analogue eremomycin. The spontaneous reaction of vancomycin with formaldehyde or acetaldehyde may have implications not only for the clinical use of this class of antibiotics, but also for the effectiveness of these antibiotics when they are used in chiral separation chromatography or capillary electrophoresis.
Collapse
Affiliation(s)
- A J Heck
- Department of Biomolecular Mass Spectrometry, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, The Netherlands.
| | | | | | | | | |
Collapse
|
21
|
|
22
|
Prodrugs of peptides. 15. 4-Imidazolidinone prodrug derivatives of enkephalins to prevent aminopeptidase-catalyzed metabolism in plasma and absorptive mucosae. Int J Pharm 1991. [DOI: 10.1016/0378-5173(91)90349-s] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|