Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Pchelka, A."'
Publikováno v:
In Tetrahedron: Asymmetry 2006 17(17):2516-2530
Publikováno v:
In Tetrahedron 2006 62(47):10968-10979
Publikováno v:
In Tetrahedron: Asymmetry 2001 12(15):2109-2119
Resolution of racemic 1-azido-3-aryloxy-2-propanols by lipase-catalyzed enantioselective acetylation
Publikováno v:
In Tetrahedron: Asymmetry 14 July 2000 11(13):2719-2732
Autor:
L M, Rozhdestvensky, V F, Mikhailov, T G, Schlyakova, J M, Shagirova, R A, Shchegoleva, N F, Raeva, N I, Lisina, L V, Shulenina, V V, Zorin, A V, Pchelka, K Y, Trubitsina
Publikováno v:
Radiatsionnaia biologiia, radioecologiia. 55(4)
Different radiomodificators (cytokine betaleukine, antioxidant phenoxan, antigipoksant limontar and nucleoside riboxin) were investigated on mice for evaluating their radiation protective capacity against prolonged (21 h) exposure at a dose of 12.6 G
Autor:
L. M. Rozhdestevenskiy, K. Yu. Trubitsina, A. V. Pchelka, Anna Grekhova, Andreyan N. Osipov, N. Yu. Vorobyeva
Publikováno v:
Bulletin of experimental biology and medicine. 160(4)
We showed that injection of IL-1β (Betaleukin) in a dose of 3 μg/kg 22 h before prolonged (21 h) exposure to low-intensity (10 mGy/min) γ-radiation in a dose of 12.6 Gy reduced the number of double-strand DNA breaks in murine spleen cells to the c
Publikováno v:
Tetrahedron: Asymmetry. 17:2516-2530
( S )-(−)-(Benzotriazol-1-yl)- and ( S )-(−)-(benzotriazol-2-yl)-alkan-2-ols 7a – 9a , 7b – 9b and their ( R )-(+)-acetates 10a – 12a and 10b – 12b were prepared in high enantiomeric excess via lipase from Pseudomonas fluorescens (Amano A
Publikováno v:
Tetrahedron: Asymmetry. 12:2109-2119
Both ( R )- and ( S )-enantiomers of 3-aryloxy-1-nitrooxypropan-2-ols ( R )-(−)- 1 , ( S )-(+)- 2 were prepared in high enantiomeric excess by lipase from Pseudomonas cepacia (Amano PS) or Pseudomonas fluorescens (Amano AK)-catalyzed acetylation of
Resolution of racemic 1-azido-3-aryloxy-2-propanols by lipase-catalyzed enantioselective acetylation
Publikováno v:
Tetrahedron: Asymmetry. 11:2719-2732
Kinetic resolution of racemic 1-azido-3-aryloxy-2-propanols 1a–g was performed using supported lipase of Candida antarctica-B (Novozym® SP 435) in toluene at 4°C with isopropenyl acetate as the acyl donor to afford the optically active (S)-alcoho
Publikováno v:
Synthetic Communications. 28:4355-4364
The racemic mixtures of 1-aryloxy-3-nitrato-2-propanols and 1-aryloxy-3-azido-2-propanols were resolved with moderate selectivity by the lipase-mediated acylation with vinyl acetate. The effects of the nature, position, and spatial requirements of th