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Access to Highly Enantioenriched Donepezil-like 1,4-Dihydropyridines as Promising Anti-Alzheimer Prodrug Candidates via Enantioselective Tsuji Allylation and Organocatalytic Aza-Ene-Type Domino Reactions

Abstract : This work aims at exploiting both the enantioselective Tsuji allylation of allyl carbonate 6 and an organocatalytic aza-ene-type domino reaction between enal 3a and β-enaminone 4a to develop a straightforward access to all of the four possible stereoisomers of a donepezil-like 1,4-dihydropyridine 1a (er up to 99.5:0.5; overall yield up 64%), an anti-Alzheimer’s prodrug candidate. This strategy was extended to the preparation of other enantioenriched 1,4-dihydropyridines 1b–i (eight examples), highlighting its potential in the development of these chiral AChE inhibitors.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-02024535
Contributor : Madeleine Roux-Merlin <>
Submitted on : Thursday, February 28, 2019 - 10:43:45 AM
Last modification on : Thursday, July 2, 2020 - 3:29:01 AM

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Mihaela-Liliana Tîntas, R. Azzouz, L. Peauger, Vincent Gembus, Emilie Petit, et al.. Access to Highly Enantioenriched Donepezil-like 1,4-Dihydropyridines as Promising Anti-Alzheimer Prodrug Candidates via Enantioselective Tsuji Allylation and Organocatalytic Aza-Ene-Type Domino Reactions. Journal of Organic Chemistry, American Chemical Society, 2018, 83 (17), pp.10231-10240. ⟨10.1021/acs.joc.8b01442⟩. ⟨hal-02024535⟩

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