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pro vyhledávání: '"K. Königsberger"'
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Microbial Baeyer-Villiger reaction of bicyclo[3.2.0]heptan-6-ones — a novel approach to sarkomycin A
Autor:
K. Königsberger, Herfried Griengl
Publikováno v:
Bioorganic & Medicinal Chemistry. 2:595-604
Racemic (1 alpha, 2 alpha, 5 alpha)- and (1 beta, 2 alpha, 5 beta)-2- bromobicyclo[3.2.0]heptan-6-one (rac-7, rac-10, respectively), (1 alpha, 2 alpha, 5 beta)- and (1 beta, 2 alpha, 5 beta)-2- benzyloxybicyclo[3.2.0]heptan-6-one (rac-15, rac-13, res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31494d87b23c383894ba414e6c000b0f
https://doi.org/10.1016/0968-0896(94)85006-2
https://doi.org/10.1016/0968-0896(94)85006-2
Publikováno v:
Biotechnology Letters. 12:509-514
Baeyer-Villiger oxidation of bicyclic ketones1a,1b and4 using whole cell suspensions of the fungusCylindrocarpon destructans was found to proceed quantitatively and in case of substrate (±)-1b a moderate enantioselectivity was observed leading to (1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af5a6427c862511a5c4b0acd0c6a1fe0
https://doi.org/10.1007/bf01086344
https://doi.org/10.1007/bf01086344
Publikováno v:
Chemistry and Physics of Lipids. 54:43-48
A series of (R)- and (S)-1-alkyn-3-ols, chiral building units for the synthesis of leukotrienes and pheromones, were prepared via enantioselective hydrolysis of their racemic esters. While the majority of biocatalysts employed (lipases, fermenting or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::943cf2f8214a9743f6c24d1fdaa208ca
https://doi.org/10.1016/0009-3084(90)90058-y
https://doi.org/10.1016/0009-3084(90)90058-y
Publikováno v:
Tetrahedron. 46:4231-4240
Aiming to improve the enantioselectivity of enzymatic resolution of esters, lipase catalyzed hydrolysis of (D)- and (L-2-chloropropanoates of four racemic alcohols and transesterification of ethyl (DL)-2-chloropropanoate with optically pure alcohols
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b51cc1af1eb1a2b12e0dca94fb4a6e4e
https://doi.org/10.1016/s0040-4020(01)86759-4
https://doi.org/10.1016/s0040-4020(01)86759-4
Publikováno v:
Tetrahedron: Asymmetry. 1:541-546
An efficient enzymatic resolution of 7,7-disubstituted 1,4,5,6-tetrachlorobicyclo [2.2.1]hept-5-en-2-ols was accomplished by means of lipase AY-30 from Candida cylindracea in toluene. When acid anhydrides were used as acyl donors, the enantioselectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45f331036f1b9ec5b4f49990db298fee
https://doi.org/10.1016/s0957-4166(00)80545-5
https://doi.org/10.1016/s0957-4166(00)80545-5
Akademický článek
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Publikováno v:
Tetrahedron Letters. 32:499-500
The biconversion of 7-anti-benzyloxymethylbicyclo[2.2.1]hept-5-en-2-one 1 with cells of Acinetobacter calcoaceticus NCIB 9871 has been studied. Its (1R,4S,7R) enantiomer underwent a Baeyer-Villiger oxidation yielding rearranged lactone 2 (ee 85%), wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88dcc4e5136a09befaaef88ec1f7a302
https://doi.org/10.1016/s0040-4039(00)79478-0
https://doi.org/10.1016/s0040-4039(00)79478-0
Autor:
Gerhard Penn, K. Königsberger, Christoph Marschner, Herfried Griengl, Petra Baumgartner, Kurt Faber
Publikováno v:
Tetrahedron. 45:673-680
Butyrates of endo -bicyclo(2.2.2]octanols and endo -bicyclo[2.2.1] heptan-2-ols, the latter bearing substituents of different size at C-7, were hydrolysed enzymatically using Candida cylindracea lipase. Steric factors were found to influence enantios
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0a48f03c023a0bd125f76447300cd1b
https://doi.org/10.1016/0040-4020(89)80096-1
https://doi.org/10.1016/0040-4020(89)80096-1
Autor:
K. Königsberger
Publikováno v:
Mathematische Annalen. 155:35-52
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9460f6443e2c5ff8f5541fd5105447ff
https://doi.org/10.1007/bf01350889
https://doi.org/10.1007/bf01350889