1
|
Tromans J, Zhang B, Golding BT. Unlocking nature's antioxidants: a novel method for synthesising plasmalogens. Org Biomol Chem 2024; 22:7989-7995. [PMID: 39233652 DOI: 10.1039/d4ob01233j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
Plasmalogens are glycerophospholipids distinguished by their O-(Z)-vinyl ether at the sn-1 position. These lipids are implicated in several disease states requiring analytical, diagnostic and therapeutic interventions, which demand synthetic availability for a variety of structural types. By deploying the new O-protecting group 1,4-dimethoxynaphthyl-2-methyl ('DIMON') and a new stereospecific method for accessing Z-vinyl ethers, a reproducible, versatile synthetic route to plasmalogens [plasmenyl phosphocholines] has been developed. A key intermediate is (S,Z)-1-((1,4-dimethoxynaphthalen-2-yl)methoxy)-3-(hexadec-1-en-1-yloxy)propan-2-ol, which in principle, permits plasmalogen synthesis 'à la carte' at scale. The methodology compares favourably with all previous synthetic routes by virtue of the very high configurational (>99% Z) and optical purity (>99% ee), including the ability to incorporate polyunsaturated fatty acyl chains (e.g. all Z docosahexaenoic acid) reliably at the sn-2 position.
Collapse
Affiliation(s)
- Jay Tromans
- School of Natural and Environmental Science - Chemistry, Newcastle University, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Bian Zhang
- BiBerChem Research Ltd, The Biosphere, Draymans Way, Newcastle Helix, Newcastle upon Tyne, NE4 5BX, UK
| | - Bernard T Golding
- School of Natural and Environmental Science - Chemistry, Newcastle University, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| |
Collapse
|
2
|
Tlapale-Lara N, López J, Gómez E, Villa-Tanaca L, Barrera E, Escalante CH, Tamariz J, Delgado F, Andrade-Pavón D, Gómez-García O. Synthesis, In Silico Study, and In Vitro Antifungal Activity of New 5-(1,3-Diphenyl-1 H-Pyrazol-4-yl)-4-Tosyl-4,5-Dihydrooxazoles. Int J Mol Sci 2024; 25:5091. [PMID: 38791130 PMCID: PMC11120875 DOI: 10.3390/ijms25105091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/29/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
The increase in multi-drug resistant Candida strains has caused a sharp rise in life-threatening fungal infections in immunosuppressed patients, including those with SARS-CoV-2. Novel antifungal drugs are needed to combat multi-drug-resistant yeasts. This study aimed to synthesize a new series of 2-oxazolines and evaluate the ligands in vitro for the inhibition of six Candida species and in silico for affinity to the CYP51 enzymes (obtained with molecular modeling and protein homology) of the same species. The 5-(1,3-diphenyl-1H-pyrazol-4-yl)-4-tosyl-4,5-dihydrooxazoles 6a-j were synthesized using the Van Leusen reaction between 1,3-diphenyl-4-formylpyrazoles 4a-j and TosMIC 5 in the presence of K2CO3 or KOH without heating, resulting in short reaction times, high compound purity, and high yields. The docking studies revealed good affinity for the active site of the CYP51 enzymes of the Candida species in the following order: 6a-j > 4a-j > fluconazole (the reference drug). The in vitro testing of the compounds against the Candida species showed lower MIC values for 6a-j than 4a-j, and for 4a-j than fluconazole, thus correlating well with the in silico findings. According to growth rescue assays, 6a-j and 4a-j (like fluconazole) inhibit ergosterol synthesis. The in silico toxicity assessment evidenced the safety of compounds 6a-j, which merit further research as possible antifungal drugs.
Collapse
Affiliation(s)
- Neively Tlapale-Lara
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Julio López
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Elizabeth Gómez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico; (E.G.); (C.H.E.)
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Colonia Santo Tomás, Mexico City 11340, Mexico;
| | - Edson Barrera
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Carlos H. Escalante
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico; (E.G.); (C.H.E.)
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| | - Dulce Andrade-Pavón
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Colonia Santo Tomás, Mexico City 11340, Mexico;
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu S/N, Unidad Adolfo López Mateos, Mexico City 07738, Mexico
| | - Omar Gómez-García
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (N.T.-L.); (J.L.); (E.B.); (J.T.); (F.D.)
| |
Collapse
|
3
|
Umaña CA, Henry JL, Saltzman CT, Sackett DL, Jenkins LM, Taylor RE. Linear (-)-Zampanolide: Flexibility in Conformation-Activity Relationships. ChemMedChem 2023; 18:e202300292. [PMID: 37552215 PMCID: PMC10615712 DOI: 10.1002/cmdc.202300292] [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: 06/05/2023] [Revised: 07/20/2023] [Accepted: 08/01/2023] [Indexed: 08/09/2023]
Abstract
Through an understanding of the conformational preferences of the polyketide natural product (-)-zampanolide, and the structural motifs that control these preferences, we developed a linear zampanolide analogue that exhibits potent cytotoxicity against cancer cell lines. This discovery provides a set of three structural handles for further structure-activity relationship (SAR) studies of this potent microtubule-stabilizing agent. Moreover, it provides additional evidence of the complex relationship between ligand preorganization, conformational flexibility, and biological potency. In contrast to medicinal chemistry dogma, these results demonstrate that increased overall conformational flexibility is not necessarily detrimental to protein binding affinity and biological activity.
Collapse
Affiliation(s)
- Christian A Umaña
- Department of Chemistry and Biochemistry and the Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, IN 46556-5670, USA
| | - Jeffrey L Henry
- Department of Chemistry and Biochemistry and the Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, IN 46556-5670, USA
| | - Claire T Saltzman
- Department of Chemistry and Biochemistry and the Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, IN 46556-5670, USA
| | - Dan L Sackett
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Lisa M Jenkins
- Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Richard E Taylor
- Department of Chemistry and Biochemistry and the Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, IN 46556-5670, USA
| |
Collapse
|
4
|
De Angelis M, Primitivo L, Lizzio F, Agostinelli S, Sappino C, Ben Romdan I, Bonanni L, D'Annibale A, Antonioletti R, Ricelli A, Righi G. Total stereocontrolled synthesis of a novel pyrrolizidine iminosugar. Carbohydr Res 2021; 511:108484. [PMID: 34920269 DOI: 10.1016/j.carres.2021.108484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 11/02/2022]
Abstract
Herein we describe a versatile approach to the pyrrolizidine alkaloids skeleton by tailoring our original strategy already used for the pyrrolidine iminosugars synthesis. The key steps are the regio- and stereoselective azidolysis of the suitable chiral vinyl epoxide and then asymmetric dihydroxylation of the corresponding azido alcohol by using (DHQ)2AQN as the ligand. Further optimized elaborations addressed to the closure of the two rings allowed us to achieve the target iminosugar with complete stereocontrol. The wide range of pyrrolizidine iminosugars' biological properties make them a key focus of new drug research and therefore the development of synthetic strategies for obtaining them is of decisive importance.
Collapse
Affiliation(s)
- Martina De Angelis
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy.
| | - Ludovica Primitivo
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Federica Lizzio
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Sonia Agostinelli
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Carla Sappino
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Ilaria Ben Romdan
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Luciano Bonanni
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Andrea D'Annibale
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Roberto Antonioletti
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Alessandra Ricelli
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Giuliana Righi
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy.
| |
Collapse
|
5
|
Neha K, Ali F, Haider K, Khasimbi S, Wakode S. Synthetic approaches for oxazole derivatives: A review. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1986843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Kumari Neha
- Department of Pharmaceutical Chemistry, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), DPSRU, New Delhi, India
| | - Faraat Ali
- Department of Inspection and Enforcement, Laboratory services, Botswana Medicines Regulatory Authority, Gaborone, Botswana
| | - Kashif Haider
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard (Deemed to be University), New Delhi, India
| | - Shaik Khasimbi
- Department of Pharmaceutical Chemistry, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), DPSRU, New Delhi, India
| | - Sharad Wakode
- Department of Pharmaceutical Chemistry, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), DPSRU, New Delhi, India
| |
Collapse
|