1
|
Séguin JC, Gagnon D, Bélanger S, Richard D, Fernandez X, Boudreau S, Voyer N. Chemical Composition and Antiplasmodial Activity of the Essential Oil of Rhododendron subarcticum Leaves from Nunavik, Québec, Canada. ACS OMEGA 2023; 8:16729-16737. [PMID: 37214733 PMCID: PMC10193425 DOI: 10.1021/acsomega.3c00235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/17/2023] [Indexed: 05/24/2023]
Abstract
Dwarf Labrador tea, Rhododendron subarcticum Harmaja, is a popular medicinal plant in use by First Nations of Northern Canada, but its phytochemistry has remained largely unexplored. We have isolated and characterized the essential oil from a population of this species harvested near the treeline in Nunavik, Québec. Analyses by gas chromatography-mass spectrometry (GC-MS) and gas chromatography/flame-ionization detection (GC/FID) led to the identification of 53 compounds; the main secondary metabolites were ascaridole (64.7% of the total FID area) and p-cymene (21.1%). Such a composition resembles a chemotype observed for R. tomentosum, a close relative found mainly in Europe and Asia, but has never been attributed to R. subarcticum. Growth inhibition assays against different strains of Plasmodium falciparum (3D7, Dd2), the parasite responsible for the most severe form of malaria, were conducted with either the R. subarcticum's essential oil or the isolated ascaridole. Our results show that the essential oil's biological activity can be attributed to ascaridole as its IC50 is more than twice that of ascaridole [ascaridole's IC50 values are 147.3 nM (3D7) and 104.9 nM (Dd2)].
Collapse
Affiliation(s)
- Jean-Christophe Séguin
- Département
de chimie and PROTEO, Université
Laval, 1045 av. De la Médecine, G1V
0A6 Québec, Québec, Canada
- Centre
d’études nordiques, Université
Laval, 2405 rue de la Terrasse, G1V 0A6 Québec, Québec, Canada
| | - Dominic Gagnon
- Centre
de recherche du CHU de Québec, Université
Laval, 2705 boulevard
Laurier, G1V 4G2 Québec, Québec, Canada
| | - Sarah Bélanger
- Département
de chimie and PROTEO, Université
Laval, 1045 av. De la Médecine, G1V
0A6 Québec, Québec, Canada
| | - Dave Richard
- Département
de microbiologie-infectiologie et d’immunologie, Centre Hospitalier de l’Université Laval, 2705 boulevard Laurier, G1V 4G2 Québec, Québec, Canada
- Centre
de recherche du CHU de Québec, Université
Laval, 2705 boulevard
Laurier, G1V 4G2 Québec, Québec, Canada
| | - Xavier Fernandez
- Université
Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272, Nice 06108, France
| | - Stéphane Boudreau
- Centre
d’études nordiques, Université
Laval, 2405 rue de la Terrasse, G1V 0A6 Québec, Québec, Canada
- Département
de biologie, Université Laval, 1045 av. De la Médecine, G1V 0A6 Québec, Québec, Canada
| | - Normand Voyer
- Département
de chimie and PROTEO, Université
Laval, 1045 av. De la Médecine, G1V
0A6 Québec, Québec, Canada
- Centre
d’études nordiques, Université
Laval, 2405 rue de la Terrasse, G1V 0A6 Québec, Québec, Canada
| |
Collapse
|
2
|
Synthesis of 1,5-diaryl-2-fluoro-6,7-dioxabicyclo[3.2.2]nonanes with high antimalarial activity utilizing photoinduced electron-transfer oxygenation reactions. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
3
|
Yaremenko IA, Vil’ VA, Demchuk DV, Terent’ev AO. Rearrangements of organic peroxides and related processes. Beilstein J Org Chem 2016; 12:1647-748. [PMID: 27559418 PMCID: PMC4979652 DOI: 10.3762/bjoc.12.162] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 07/14/2016] [Indexed: 12/17/2022] Open
Abstract
This review is the first to collate and summarize main data on named and unnamed rearrangement reactions of peroxides. It should be noted, that in the chemistry of peroxides two types of processes are considered under the term rearrangements. These are conventional rearrangements occurring with the retention of the molecular weight and transformations of one of the peroxide moieties after O-O-bond cleavage. Detailed information about the Baeyer-Villiger, Criegee, Hock, Kornblum-DeLaMare, Dakin, Elbs, Schenck, Smith, Wieland, and Story reactions is given. Unnamed rearrangements of organic peroxides and related processes are also analyzed. The rearrangements and related processes of important natural and synthetic peroxides are discussed separately.
Collapse
Affiliation(s)
- Ivan A Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry V Demchuk
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Alexander O Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| |
Collapse
|
4
|
Kamata M, Hagiwara JI, Hokari T, Suzuki C, Fujino R, Kobayashi S, Kim HS, Wataya Y. Applications of triphenylpyrylium salt-sensitized electron-transfer photo-oxygenation reactions to the synthesis of benzo-fused 1,4-diaryl-2,3-dioxabicyclo[2.2.2]octanes as new antimalarial cyclic peroxides. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0637-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
5
|
|
6
|
Artemisinin and a series of novel endoperoxide antimalarials exert early effects on digestive vacuole morphology. Antimicrob Agents Chemother 2007; 52:98-109. [PMID: 17938190 DOI: 10.1128/aac.00609-07] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Artermisinin and its derivatives are now the mainstays of antimalarial treatment; however, their mechanism of action is only poorly understood. We report on the synthesis of a novel series of epoxy-endoperoxides that can be prepared in high yields from simple starting materials. Endoperoxides that are disubstituted with alkyl or benzyl side chains show efficient inhibition of the growth of both chloroquine-sensitive and -resistant strains of Plasmodium falciparum. A trans-epoxide with respect to the peroxide linkage increases the activity compared to that of its cis-epoxy counterpart or the parent endoperoxide. The novel endoperoxides do not show a strong interaction with artemisinin. We have compared the mechanism of action of the novel endoperoxides with that of artemisinin. Electron microscopy reveals that the novel endoperoxides cause the early accumulation of endocytic vesicles, while artemisinin causes the disruption of the digestive vacuole membrane. At longer incubation times artemisinin causes extensive loss of organellar structures, while the novel endoperoxides cause myelin body formation as well as the accumulation of endocytic vesicles. An early event following endoperoxide treatment is the redistribution of the pH-sensitive probe LysoSensor Blue from the digestive vacuole to punctate structures. By contrast, neither artemisinin nor the novel endoperoxides caused alterations in the morphology of the endoplasmic reticulum nor showed antagonistic antimalarial activity when they were used with thapsigargin. Analysis of rhodamine 123 uptake by P. falciparum suggests that disruption of the mitochondrial membrane potential occurs as a downstream effect rather than as an initiator of parasite killing. The data suggest that the digestive vacuole is an important initial site of endoperoxide antimalarial activity.
Collapse
|
7
|
Abstract
Several dicyclohexylidene tetraoxanes were prepared in order to gain a further insight into structure-activity relationship of this kind of antimalarials. The tetraoxanes 2-5, obtained as a cis/trans mixture, showed pronounced antimalarial activity against Plasmodium falciparum chloroquine susceptible D6, chloroquine resistant W2 and multidrug-resistant TM91C235 (Thailand) strains. They have better than or similar activity to the corresponding desmethyl dicyclohexylidene derivatives. Two chimeric endoperoxides with superior antimalarial activity to the natural product ascaridole were also synthesized.
Collapse
|
8
|
Ayala DA, Romero JM, Jorge NL, Gómez-Vara ME, Jubert AH, Castro EA. Experimental preparation and UV/IR spectroscopic characterization of 1,3-dibutanal-1,2,4,5-tetroxane. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 64:717-21. [PMID: 16442838 DOI: 10.1016/j.saa.2005.06.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Accepted: 06/11/2005] [Indexed: 05/06/2023]
Abstract
We report the experimental preparation of the 1,3-butanal-1,2,4,5-tetroxane by oxidation of glutataldehyde with oxygen peroxide in presence of concentrated sulfuric acid, following the Bayer and Viller method modified by Jorge et al. The UV and IR spectra are studied from the experimental and theoretical standpoint. A rather complete vibrational assignment was performed and the nature of the electronic transitions was discussed in detail.
Collapse
Affiliation(s)
- D A Ayala
- Area de Fisicoquímica, FACENA, Universidad Nacional del Nordeste, Campus Universitario, Avda. Libertad 5400, Corrientes 3400, Argentina
| | | | | | | | | | | |
Collapse
|
9
|
Jin HX, Liu HH, Zhang Q, Wu Y. On the Susceptibility of Organic Peroxy Bonds to Hydride Reduction. J Org Chem 2005; 70:4240-7. [PMID: 15903296 DOI: 10.1021/jo050139y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reduction of organic molecules that contain a peroxy bond is broadly considered as a "risky" and uncertain operation when cleavage of the peroxy linkage is not desired. For this reason, such reduction steps are normally avoided at the planning stage of the synthesis when possible. As a natural consequence, the information in the literature about the susceptibility of organic peroxy bonds to reducing species is scant. In this work the tolerance of organic peroxy bonds to some common hydride reductants was examined systematically for the first time. Using reduction of ester group to alcohol as a probe, LiAlH(4), LiAlH(O(t)()Bu)(3), LiBHEt(3), and LiBH(4) were found to be significantly better than other reductants examined when taking into consideration both the completeness of the reduction of ester groups and the peroxy bond survival rate. LiBH(4) appeared to be the most suitable reductant for the reduction under discussion, not only because of the high reduction yields/excellent compatibility with peroxy bonds, but also because of the advantages in practical aspects. The results disclosed herein may (hopefully) provide a handy reference for dealing with reduction of other peroxy bond-containing molecules in the future.
Collapse
Affiliation(s)
- Hong-Xia Jin
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
| | | | | | | |
Collapse
|
10
|
O’Neill PM, Rawe SL, Storr RC, Ward SA, Posner GH. Lewis acid catalysed rearrangements of unsaturated bicyclic [2.2.n] endoperoxides in the presence of vinyl silanes; access to novel Fenozan BO-7 analogues. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
11
|
Marrero-Ponce Y, Montero-Torres A, Zaldivar CR, Veitía MI, Peréz MM, Sánchez RNG. Non-stochastic and stochastic linear indices of the ‘molecular pseudograph’s atom adjacency matrix’: application to ‘in silico’ studies for the rational discovery of new antimalarial compounds. Bioorg Med Chem 2005; 13:1293-304. [PMID: 15670938 DOI: 10.1016/j.bmc.2004.11.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2004] [Revised: 11/05/2004] [Accepted: 11/05/2004] [Indexed: 11/18/2022]
Abstract
Malaria is one of the most deadly diseases, affecting million of people especially in developing countries. Because of the rapidly increasing threat worldwide of malaria epidemics multidrugs resistant to therapies, there is an urgent global need to discover new classes of antimalarial compounds. In an effort to overcome this problem, we have investigated the use of structure-based classification models for the 'rational' selection/identification or design/optimization of new lead antimalarials from virtual combinatorial data sets. In this sense, TOpological MOlecular COMputer Design strategy (TOMOCOMD approach) has been introduced in order to obtain two quantitative models for the discrimination of antimalarials. A collected data set containing 597 antimalarial compounds is presented as a helpful tool not only for theoretical chemist but for other researchers in this area. The validated models (including non-stochastic and stochastic indices) classify correctly more than 90% of compounds in both training and external prediction data sets. They showed high Matthews' correlation coefficients; 0.87 and 0.82 for training and 0.86 and 0.79 for test set. The TOMOCOMD-CARDD approach implemented in this work was successfully compared with two of the most useful models for antimalarials selection reported so far. Thus we expect that these two QSAR models can be used in the identification of previously un-known antimalarials compounds.
Collapse
Affiliation(s)
- Yovani Marrero-Ponce
- Department of Pharmacy, Faculty of Chemical-Pharmacy. Central University of Las Villas, Santa Clara, 54830 Villa Clara, Cuba
| | | | | | | | | | | |
Collapse
|
12
|
Kamata M, Satoh C, Kim HS, Wataya Y. Iron(II)-promoted rearrangement of 1,4-diaryl-2,3-dioxabicyclo[2.2.2]oct-5-enes: a mechanism distinct from that postulated previously. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)02024-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
13
|
Kamata M, Ohta M, Komatsu KI, Kim HS, Wataya Y. Synthesis, Fe(II)-induced degradation, and antimalarial activities of 1,5-diaryl-6,7-dioxabicyclo[3.2.2]nonanes: direct evidence for nucleophilic O-1,2-aryl shifts. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00166-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
14
|
Fe(II)-mediated fragmentation of 1,4-diaryl-2,3-dioxabicyclo[2.2.2]octanes through competitive single electron transfer pathway and Lewis acid pathway. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(01)02201-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
15
|
Novel photo-rearrangement of 1,5-di(p-methoxyphenyl)-6,7-dioxabicyclo[3.2.2]nonane through an O-neophyl-type 1,2-aryl shift: evidence for a 1,6-dioxyl diradical intermediate. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01973-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
16
|
Formation of 1,2,4-trioxolanes via 9,10-dicyanoanthracene(DCA)-sensitized photo-oxygenation of 2,2-diaryl-3-(2,2-diarylvinyl)oxiranes. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01972-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
17
|
A new route to diastereomerically pure cyclopropanes utilizing stabilized phosphorus ylides and gamma-hydroxy enones derived from 1, 2-dioxines: mechanistic investigations and scope of reaction. J Org Chem 2000; 65:5531-46. [PMID: 10970292 DOI: 10.1021/jo0002240] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new chemical transformation for the construction of diversely functionalized cyclopropanes utilizing 1,2-dioxines and stabilized phosphorus ylides as the key precursors is presented. Through a series of mechanistic studies we have elucidated a clear understanding of the hitherto unknown complex relationship between 1, 2-dioxines 1a-e, and their isomeric cis/trans gamma-hydroxy enones (23 and 21a-e), cis/trans hemiacetals 24a-e, and beta-ketoepoxides (e.g., 26), and how these precursors can be utilized to construct diversely functionalized cyclopropanes. Furthermore, several new synthetically useful routes to these structural isomers are presented. Key features of the cyclopropanation include the ylide acting as a mild base inducing the ring opening of the 1,2-dioxines to their isomeric cis gamma-hydroxy enones 23a-e, followed by Michael addition of the ylide to the cis gamma-hydroxy enones 23a-e and attachment of the electrophilic phosphorus pole of the ylide to the hydroxyl moiety, affording the intermediate 1-2lambda(5)-oxaphospholanes 4 and setting up the observed cis stereochemistry between H1 and H3. Cyclization of the resultant enolate (30a or 30b), expulsion of triphenylphosphine oxide, and proton transfer from the reaction manifold affords the observed cyclopropanes in excellent diastereomeric excess. The utilization of Co(SALEN)(2) in a catalytic manner also allows for a dramatic acceleration of reaction rates when entering the reaction manifold from the 1,2-dioxines. While cyclopropanation is favored by the use of ester-stabilized ylides, the use of keto- or aldo-stabilized ylides results in a preference for 1,4-dicarbonyl formation through a competing Kornblum-De La Mare rearrangement of the intermediate hemiacetals. This finding can be attributed to subtle differences in ylide basicity/nucleophilicity. In addition, the use of doubly substituted ester ylides allows for the incorporation of another stereogenic center within the side chain. Finally, our studies have revealed that the isomeric trans gamma-hydroxy enones and the beta-keto epoxides are not involved in the cyclopropanation process; however, they do represent an alternative entry point into this reaction manifold.
Collapse
|
18
|
Tsuchiya K, Hamada Y, Masuyama A, Nojima M, McCullough KJ, Kim HS, Shibata Y, Wataya Y. Synthesis, crystal structure and anti-malarial activity of novel spiro-1,2,4,5-tetraoxacycloalkanes. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)00653-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Affiliation(s)
- W Peters
- CABI Bioscience, Tropical Parasitic Diseases Unit, St Albans, Hertfordshire, UK
| |
Collapse
|
20
|
|
21
|
|
22
|
Ushigoe Y, Masuyama A, Nojima M, McCullough KJ. New methods for the synthesis of oxy-functionalized 1,2,4-trioxanes and 1,2,4-trioxepanes from unsaturated hydroperoxy acetals. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10343-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
23
|
Barton DH, Launay F. The selective functionalization of saturated hydrocarbons. Part 40. Aspects of FeII based peroxide fragmentation in pyridine solution. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)01063-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
24
|
Affiliation(s)
- N J Snell
- European Medical Affairs Department, Stoke Poges, Bucks, UK
| |
Collapse
|
25
|
|