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Zhang X. Vallesamidine and schizozygane alkaloids: rearranged monoterpene indole alkaloids and synthetic endeavours. Nat Prod Rep 2024; 41:784-812. [PMID: 38275179 DOI: 10.1039/d3np00048f] [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: 01/27/2024]
Abstract
Covering 1963 to 2023Monoterpene indole alkaloids are the main sub-family of indole alkaloids with fascinating structures, stereochemistry, and diverse bioactivities (e.g., anticancer, anti-malarial and anti-arrhythmic etc.). Vallesamidine alkaloids and structurally more complex schizozygane alkaloids are small groups of rearranged monoterpene indole alkaloids with a unique 2,2,3-trialkylated indoline scaffold, while schizozygane alkaloids can generate a further rearranged skeleton, isoschizozygane, possessing a tetra-substituted, bridged tetrahydroquinoline core. In this review, the origin and structural features of vallesamidine and schizozygane alkaloids are introduced, and a discussion on the relationship of these alkaloids with aspidosperma alkaloids and a structural rearrangement hypothesis based on published studies is followed. Moreover, uncommon skeletons and potential bioactivities, such as anti-malarial and anti-tumour activities, make such alkaloids important synthetic targets, attracting research groups globally to accomplish total synthesis, resulting in impressive works on novel total synthesis, formal synthesis, and construction of key intermediates. These synthetic endeavours are systematically reviewed and highlighted with key strategies and efficiencies, providing different viewpoints on molecular structures and promoting the extension of chemical space and mining of new active scaffolds.
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Affiliation(s)
- Xiangyu Zhang
- Department of Biomedical Engineering and Diagnostic Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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Szwarc S, Jagora A, Derbré S, Leblanc K, Rharrabti S, Said-Hassane C, El Kalamouni C, Gallard JF, Le Pogam P, Beniddir MA. Combination of Machine Learning and Empirical Computation for the Structural Validation of Trirosaline, a Natural Trimeric Monoterpene Indole Alkaloid from Catharanthus roseus. Org Lett 2024; 26:274-279. [PMID: 38134219 DOI: 10.1021/acs.orglett.3c03972] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Chemical investigation of the emblematic Catharanthus roseus led to the discovery of trirosaline (1), the first example of a tris-ajmalicine-type monoterpene indole alkaloid and the first natural trimeric MIA ever reported from this deeply dug plant species. Its structure was primarily elucidated based on NMR and HRESIMS analyses, and the nature of its unique intermonomeric linkages was firmly confirmed based on a combination of empirical computation and ML-J-DP4 study. Its absolute configuration was mitigated by comparison of experimental and TDDFT-simulated electronic circular dichroism (ECD) spectra. A possible biosynthetic pathway for trirosaline (1) was postulated.
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Affiliation(s)
- Sarah Szwarc
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France
| | - Adrien Jagora
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France
| | - Séverine Derbré
- Université Angers, SONAS, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 CEDEX 01 Angers, France
| | - Karine Leblanc
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France
| | - Somia Rharrabti
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France
| | - Charifat Said-Hassane
- Unité Mixte Processus Infectieux en Milieu Insulaire Tropical, Université de la Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249, Plateforme Technologique CYROI, 97490 Sainte Clotilde, La Réunion, France
| | - Chaker El Kalamouni
- Unité Mixte Processus Infectieux en Milieu Insulaire Tropical, Université de la Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249, Plateforme Technologique CYROI, 97490 Sainte Clotilde, La Réunion, France
| | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR 2301, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Pierre Le Pogam
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France
| | - Mehdi A Beniddir
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France
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