Výsledky vyhledávání - "Pavlo Shpak-Kraievskyi"

[3+2] Route to Quaternary Oxaprolinol Derivatives as Masked Precursors of Disubstituted β3,β3-Amino Aldehyde

Autor: Gilles Dujardin, Arnaud Martel, Amelle Mankou Makaya, Mathieu Y. Laurent, Anne Beauchard, Pavlo Shpak-Kraievskyi

Publikováno v: European Journal of Organic Chemistry. 2015:3923-3934

Bicyclic isoxazolidines displaying one or two quaternary stereocenter(s) were formed starting from functional cyclic ketonitrones equipped with a phenyl glycinol chiral auxiliary. The products were engaged in stereocontrolled 1,3-dipolar cycloadditio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac4eb9373e329a4da481bd77663a9d2f
https://doi.org/10.1002/ejoc.201500339

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ChemInform Abstract: [3 + 2] Route to Quaternary Oxaprolinol Derivatives as Masked Precursors of Disubstituted β3,β3-Amino Aldehyde

Autor: Pavlo Shpak-Kraievskyi, Anne Beauchard, Arnaud Martel, Mathieu Y. Laurent, Gilles Dujardin, Amelle Mankou Makaya

Publikováno v: ChemInform. 46

A new approach to enantiopure disubstituted oxaprolinol derivatives through diastereoselective [3+2]-cycloaddition of chiral cyclic ketonitrones to electron-rich and electron-poor dipolarophiles is presented.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c6ff6bf9245d0a105a7b72b7f20af51
https://doi.org/10.1002/chin.201544195

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ChemInform Abstract: Asymmetric Synthesis of α,α-Disubstituted Amino Acids by Cycloaddition of (E)-Ketonitrones with Vinyl Ethers

Autor: Gilles Dujardin, Pavlo Shpak-Kraievskyi, Jean-François Poisson, Arnaud Martel, Sandrine Py, Pascale Cividino, Mathieu Y. Laurent, X. M. Zhang

Publikováno v: ChemInform
ChemInform, Wiley-VCH Verlag, 2014, 45 (37), pp.no-no. ⟨10.1002/chin.201437144⟩

The stereoselectivity of the 1,3-dipolar cycloaddition of (E)-ketonitrones (I) bearing a chiral auxiliary on the nitrogen atom with vinyl ethers is studied.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17eb35df52d46da1bae49b749be14516
https://hal.archives-ouvertes.fr/hal-01652157

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Asymmetric Synthesis of α,α-Disubstituted Amino Acids by Cycloaddition of ( E )-Ketonitrones with Vinyl Ethers

Autor: Pavlo Shpak-Kraievskyi, Arnaud Martel, Jean-François Poisson, Gilles Dujardin, Mathieu Y. Laurent, Pascale Cividino, X. M. Zhang, Sandrine Py

Publikováno v: Organic Letters
Organic Letters, American Chemical Society, 2014, 16 (7), pp.1936-1939. ⟨10.1021/ol500483t⟩

Original acyclic (E)-α,α-dialkylketonitrones bearing a chiral auxiliary on their nitrogen atom were synthesized and successfully employed for the asymmetric synthesis of α,α-disubstituted amino acids using regio- and stereocontrolled 1,3-dipolar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cc690b0951eb8181131344db3ed746b
https://hal.archives-ouvertes.fr/hal-01652164

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Access to C-protected β-amino-aldehydes via transacetalization of 6-alcoxy tetrahydrooxazinones and use for pseudo-peptide synthesis

Autor: Robert Dhal, Pavlo Shpak-Kraievskyi, Biaolin Yin, Mathieu Y. Laurent, Arnaud Martel, Gilles Dujardin

Publikováno v: Tetrahedron
Tetrahedron, Elsevier, 2012, 68 (9), pp.2179-2188. ⟨10.1016/j.tet.2012.01.002⟩

Efficient access to masked β-amino-aldehydes was performed starting from 6-alcoxy tetrahydrooxazinone 6a–d (6-ATO). Transacetalization leads to the opening of the cycle to form either unsymmetric acetal 7 or symmetric acetals 16–18. These amino

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7159e81bf8a9e9cb5ec8b65bda19ea0c
https://hal.archives-ouvertes.fr/hal-00700165

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