Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Majer A"'
Publikováno v:
In Tetrahedron 30 September 2013 69(39):8463-8469
Autor:
Májer, Gábor, Csávás, Magdolna, Lázár, László, Herczeg, Mihály, Bényei, Atttila, Antus, Sándor, Borbás, Anikó
Publikováno v:
In Tetrahedron 24 June 2012 68(25):4986-4994
Publikováno v:
Tetrahedron. 69:8463-8469
We demonstrate a new approach for the asymmetric synthesis of bissetone. The key reaction is the highly enantioselective hetero-Diels–Alder cycloaddition of triene 3 with ethyl glyoxylate catalyzed by readily available BINOL–Ti complexes. The HDA
Autor:
Piotr Kwiatkowski, Livius Cotarca, Jakub Majer, Janusz Jurczak, Jean-Claude Caille, M.E. Jung
Publikováno v:
Tetrahedron. 74:1580
Facile stereoselective synthesis of γ-substituted γ-amino acids from the corresponding α-amino acids
Publikováno v:
Tetrahedron. 53:12867-12874
A facile stereoselective method for the synthesis of γ-substituted, γ-amino acids from α-amino acids was developed. The key step of the procedure is complete reduction of the keto functionality of α-amino acyl Meldrum's acid by sodium acetoxyboro
Publikováno v:
In Tetrahedron 29 March 2018 74(13):1580-1580
Publikováno v:
Tetrahedron. 51:2331-2338
Preparation and spectroscopic properties of 2, 5, 6-trichloro-4(S-γ-L-glutamyl-L-cysteinyl- glycine)-1.3-dicyanobenzene (2), 2, 5-dichloro-4, 6-di-(S-γ-L-glutamyl-L-cysteinyl-glycine)-1, 3- dicyanobenzene (3), and 5-chloro-2, 4, 6-tri(S-γ- L-gluta
Autor:
Miklós Hollósi, Mária Kajtár-Peredy, Emma Kollát, Ödön Farkas, Mátyás Czugler, Zsuzsa Majer, Alajos Kálmán, Judit Kajtár
Publikováno v:
Tetrahedron. 49:6661-6668
The molecular structure of Act-Prot-Gly-NHCH3/AcΨ (CSNH)-ProΨ (CSNH)-Gly-NHCH3/ ( 1 ) is reported. In the crystal 1 adopts a conformation with a Z(trans) tertiary (thioacetyl pyrrolidine) thioamide bond and torsion angles (Φ2 = −73.2°, Ψ2 = 15
Publikováno v:
Tetrahedron. 44:195-202
IR and NMR studies on thioamide models containing one or more CO acceptor groups revealed the existence of three types of -CO...H-N-CS- mixed intramolecular H-bonds (MIH's) and the formation of thioamide turn conformations in nonpolar solvents.
Publikováno v:
Tetrahedron. 42:3931-3942
The syntheses and CD spectra in different solvents are described for four series of N-benzyloxycarbonyl-endothiodipeptide esters of types a - d with Ala, Val, Phe and Pro residues. Difference 1 H NOE and IR measurements were also performed on selecte