Synthesis 2022; 54(03): 617-628
DOI: 10.1055/a-1643-3057
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Synthesis of Fatty 1,2,4-Trioxanes by Peracetalization of β-Hydroxy Hydroperoxides

Thomas De Dios Miguel
a   Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer, 1 rue Victor Grignard, F-69100 Villeurbanne, France
,
Dan Louvel
a   Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer, 1 rue Victor Grignard, F-69100 Villeurbanne, France
,
Killian Onida
a   Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer, 1 rue Victor Grignard, F-69100 Villeurbanne, France
,
Adeline Lavoignat
b   Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe Synthèse de Molécules d’Intérêt Thérapeutique (SMITH), Bâtiment Raulin, 43 boulevard du 11 novembre 1918, F-69622 Villeurbanne cedex, France
,
Stephane Picot
b   Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe Synthèse de Molécules d’Intérêt Thérapeutique (SMITH), Bâtiment Raulin, 43 boulevard du 11 novembre 1918, F-69622 Villeurbanne cedex, France
c   Parasitology and Mycology Department, Institute of Infectious Agents, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon F-69004, France
,
a   Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer, 1 rue Victor Grignard, F-69100 Villeurbanne, France
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The region Auvergne Rhône-Alpes is acknowledged for a Ph.D. grant to T. De Dios Miguel and a master grant to D. Louvel (Pack Ambition Recherche-project VALCOUPENZ). This project has been labeled by AXELERA, pôle de compétitivité Chimie-environnement in Auvergne-Rhône-Alpes.


Abstract

The peracetalization of a β-hydroxy hydroperoxide derived from methyl oleate was studied using benzaldehyde as a model substrate to give the corresponding fatty 1,2,4-trioxane. The desired product was obtained as a mixture of regioisomers but only one diastereoisomer of each was formed. The nature of the acid catalyst was studied and both p-toluene sulfonic acid (PTSA) and Amberlyst A35 (A35) were found to be efficient homogeneous and heterogeneous catalysts, respectively. The nature of the solvent was also investigated and ethereal solvents such as 2-methyltetrahydrofuran (2-MeTHF), methyl tert-butyl ether (MTBE) and cyclopentyl methyl ether (CPME) gave the best NMR yield (85%) for the preparation of the fatty trioxane. The optimized conditions were applied to a range of aromatic and aliphatic aldehydes, and the corresponding 1,2,4-trioxanes were isolated with 30–91% yields (21 examples). The antimalarial activity of three trioxanes was studied against Plasmodium falciparum, however, no significant activity was detected (IC50 >1600 nM).

Supporting Information



Publikationsverlauf

Eingereicht: 29. Juli 2021

Angenommen nach Revision: 13. September 2021

Accepted Manuscript online:
13. September 2021

Artikel online veröffentlicht:
19. Oktober 2021

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