Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Aleksander-Mati Müürisepp"'
Autor:
Jaan Parve, Ly Villo, Riina Aav, Indrek Reile, Tiina Aid, Tõnis Pehk, Imre Vallikivi, Lauri Vares, Omar Parve, Marina Kudrjašova, Aleksander-Mati Müürisepp
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 116:60-69
Scalable lipase-catalytic method for the kinetic resolution of long-chain 1,2-alkanediol enantiomers via stereoselective cleavage of esters was developed. The influence of lipase, reaction medium, nucleophile, temperature and the structure of the acy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9481a859c7bdcfb2c92a0e6a39dd228d
https://doi.org/10.1016/j.molcatb.2015.03.006
https://doi.org/10.1016/j.molcatb.2015.03.006
Publikováno v:
Tetrahedron. 70:5843-5848
A new general method for the synthesis of enols of cyclic 3-alkynyl-substituted 1,2-diketones is developed. Sonogashira cross-coupling of silyl enolates of cyclic 3-bromo-cyclopentane- and 3-bromo-cyclohexane-1,2-diones with variety of substituted ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d2c4036d53474a6f30066cb1dbb97d3
https://doi.org/10.1016/j.tet.2014.06.037
https://doi.org/10.1016/j.tet.2014.06.037
Autor:
Tõnis Pehk, Ly Villo, Omar Parve, Lauri Vares, Eva Doyle, Aleksander-Mati Müürisepp, Jaan Parve, Sven Tamp, Marina Kudryashova
Publikováno v:
Chirality. 25:793-798
A stereochemically safe high-yielding procedure for linking unprotected as well as protected hydroxycarboxylic acids to chiral secondary alcohols via glycolic acid linker is proposed. L-menthol has been linked with both enantiomers of mandelic, malic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::144b97970f51a6e0d4a47b4168da2a0f
https://doi.org/10.1002/chir.22217
https://doi.org/10.1002/chir.22217
Autor:
Allan Niidu, Tõnis Pehk, Margus Lopp, Aleksander-Mati Müürisepp, Anne Paju, Ivar Järving, Tiiu Kailas
Publikováno v:
Chemistry of Heterocyclic Compounds. 48:1751-1760
A method for the synthesis of 1-methylcarbapentofuranose derivatives was developed, where 1,2-cis- and 1,2-trans-4-hydroxymethyl-1-methylcyclopentanediols were obtained from intramolecular opening of a 4-epoxy-4-methyl-γ-lactone. An intramolecular a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0455169ccf8e6ea6c00f02ed4c54a0ee
https://doi.org/10.1007/s10593-013-1206-4
https://doi.org/10.1007/s10593-013-1206-4
Publikováno v:
Tetrahedron. 67:5942-5948
The asymmetric oxidation of 3-alkyl-cyclopentane-1,2-diones with the Ti(O i Pr) 4 /tartaric ester/ t -BuOOH complex, which gives, in a cascade process, highly enantiomerically enriched γ-lactone acids, was studied by 18 O isotopic labeling in the su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::960596d746cdf5d91fafc2f4a6370db4
https://doi.org/10.1016/j.tet.2011.06.036
https://doi.org/10.1016/j.tet.2011.06.036
Publikováno v:
Arkivoc. 2009:39-52
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52763844da778a50b0536f594274850a
https://doi.org/10.3998/ark.5550190.0010.e04
https://doi.org/10.3998/ark.5550190.0010.e04
Autor:
Tõnis Kanger, Cindy Elmers, Kristin Lippur, Tõnis Pehk, Aleksander-Mati Müürisepp, Tiiu Kailas, Margus Lopp
Publikováno v:
Synthetic Communications. 40:266-281
A general method for the synthesis of 5,5′-disubstituted bimorpholines is proposed. According to the method, methyl-substituted and benzyl-substituted compounds were synthesized, starting from tartaric ester acetal. Target compounds were obtained i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c1cbd1b24bcf0cc19815430646281dc
https://doi.org/10.1080/00397910902964874
https://doi.org/10.1080/00397910902964874
Publikováno v:
Tetrahedron. 65:2959-2965
A series of 4′-aryl-2′,3′-dideoxynucleoside analogues were synthesized from optically pure 5-oxo-2-aryl-tetrahydrofuran-2-carboxylic acids up to 62% overall yield. 5-Oxo-2-aryl-tetrahydrofuran-2-carboxylic acids were obtained from 2-hydroxy-3-a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46772a2f55432910b82ec131d5b5c338
https://doi.org/10.1016/j.tet.2009.02.010
https://doi.org/10.1016/j.tet.2009.02.010
Autor:
Marju Laars, Tõnis Pehk, Aleksander-Mati Müürisepp, Kadri Kriis, Tõnis Kanger, Tiiu Kailas, Margus Lopp
Publikováno v:
Tetrahedron: Asymmetry. 19:641-645
Asymmetric aldol reactions were studied in the presence of heterocyclic bimorpholine- and bipiperidine-type organocatalysts. Bimorpholine derivatives were found to be more reactive and more selective in intramolecular, as well as intermolecular, reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd802ea077d42b83fec880bacaab37d
https://doi.org/10.1016/j.tetasy.2008.02.026
https://doi.org/10.1016/j.tetasy.2008.02.026
Autor:
Marit Ilves, Anne Paju, Tiiu Kailas, Margus Lopp, Artur Jõgi, Aleksander-Mati Müürisepp, Tõnis Pehk
Publikováno v:
Tetrahedron: Asymmetry. 19:628-634
Both enantiomers of the key intermediate, 2-benzyl-5-oxo-tetrahydro-furan-2-carboxylic acid were obtained by asymmetric oxidation of 3-benzyl-2-hydroxy-2-cyclopenten-1-one with an ee ⩾96%, using the tartaric ester/Ti(O i Pr) 4 / t -BuOOH complex, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::709806c58e67646fcedd720832bafca2
https://doi.org/10.1016/j.tetasy.2008.01.028
https://doi.org/10.1016/j.tetasy.2008.01.028