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Ortalli M, Varani S, Cimato G, Veronesi R, Quintavalla A, Lombardo M, Monari M, Trombini C. Evaluation of the Pharmacophoric Role of the O-O Bond in Synthetic Antileishmanial Compounds: Comparison between 1,2-Dioxanes and Tetrahydropyrans. J Med Chem 2020; 63:13140-13158. [PMID: 33091297 PMCID: PMC8018184 DOI: 10.1021/acs.jmedchem.0c01589] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 12/17/2022]
Abstract
Leishmaniases are neglected diseases that can be treated with a limited drug arsenal; the development of new molecules is therefore a priority. Recent evidence indicates that endoperoxides, including artemisinin and its derivatives, possess antileishmanial activity. Here, 1,2-dioxanes were synthesized with their corresponding tetrahydropyrans lacking the peroxide bridge, to ascertain if this group is a key pharmacophoric requirement for the antileishmanial bioactivity. Newly synthesized compounds were examined in vitro, and their mechanism of action was preliminarily investigated. Three endoperoxides and their corresponding tetrahydropyrans effectively inhibited the growth of Leishmania donovani promastigotes and amastigotes, and iron did not play a significant role in their activation. Further, reactive oxygen species were produced in both endoperoxide- and tetrahydropyran-treated promastigotes. In conclusion, the peroxide group proved not to be crucial for the antileishmanial bioactivity of endoperoxides, under the tested conditions. Our findings reveal the potential of both 1,2-dioxanes and tetrahydropyrans as lead compounds for novel therapies against Leishmania.
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Affiliation(s)
- Margherita Ortalli
- Unit of Clinical Microbiology, Regional Reference
Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi
University Hospital, Via Massarenti 9, 40138 Bologna,
Italy
| | - Stefania Varani
- Unit of Clinical Microbiology, Regional Reference
Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi
University Hospital, Via Massarenti 9, 40138 Bologna,
Italy
- Department of Experimental, Diagnostic and Specialty
Medicine, Alma Mater Studiorum - University of Bologna, Via
Massarenti 9, 40138 Bologna, Italy
| | - Giorgia Cimato
- Unit of Clinical Microbiology, Regional Reference
Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi
University Hospital, Via Massarenti 9, 40138 Bologna,
Italy
| | - Ruben Veronesi
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
| | - Arianna Quintavalla
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
- Centro Interuniversitario di Ricerca sulla Malaria
(CIRM) - Italian Malaria Network (IMN), University of Milan,
20100 Milan, Italy
| | - Marco Lombardo
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
- Centro Interuniversitario di Ricerca sulla Malaria
(CIRM) - Italian Malaria Network (IMN), University of Milan,
20100 Milan, Italy
| | - Magda Monari
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
| | - Claudio Trombini
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
- Centro Interuniversitario di Ricerca sulla Malaria
(CIRM) - Italian Malaria Network (IMN), University of Milan,
20100 Milan, Italy
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Boucher MM, Furigay MH, Quach PK, Brindle CS. Liquid–Liquid Extraction Protocol for the Removal of Aldehydes and Highly Reactive Ketones from Mixtures. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00231] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria M. Boucher
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Maxwell H. Furigay
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Phong K. Quach
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Cheyenne S. Brindle
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
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Generation of a Low-Valent Titanium Species from Titanatrane and its Catalytic Reactions: Radical Ring Opening of Oxetanes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300368] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
A convergent synthesis of (+)-SCH 351448 (1), a monosodium salt of a C(2)-symmetric macrodiolide, is described. Our approach is based on a [4 + 2] annulation with a chiral allyl silane (anti-5c) to assemble the pyran subunits. Homodimerization was carried out in a stepwise fashion; initial esterification at C29' followed by macrocyclization at C29 afforded the desired macrodiolide.
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Affiliation(s)
- Kaicheng Zhu
- Department of Chemistry and Center for Chemical Methodology and Library Development, Metcalf Center for Science and Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - James S. Panek
- Department of Chemistry and Center for Chemical Methodology and Library Development, Metcalf Center for Science and Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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Ge H, Wang J, Kayser MM, Himes RH, Georg GI. Synthesis, tubulin assembly, and antiproliferative activity against MCF7 and NCI/ADR-RES cancer cells of 10-O-acetyl-5'-hydroxybutitaxel. Bioorg Med Chem Lett 2008; 18:6165-7. [PMID: 18977659 PMCID: PMC2636847 DOI: 10.1016/j.bmcl.2008.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2008] [Revised: 09/30/2008] [Accepted: 10/02/2008] [Indexed: 11/30/2022]
Abstract
A highly efficient kinetic resolution of racemic cis-4-(2-tert-butyldimethylsilyloxy-1,1-dimethyl)ethyl-3-tert-butyldimethylsilyloxy-azetidin-2-one with 7-O-triethylsilylbaccatin III was carried out to furnish 10-O-acetyl-5'-hydroxybutitaxel after removal of the silyl protecting groups. The compound was 50% as active as paclitaxel in a tubulin assembly assay and showed significantly decreased activity against MCF7 cell proliferation compared to paclitaxel.
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Affiliation(s)
- Haibo Ge
- Department of Medicinal Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045, USA
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