Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Eugenius Butkus"'
Publikováno v:
Molecules, Vol 7, Iss 9, Pp 706-711 (2002)
Preparation of several novel potassium salts of 4-substituted aminoazo-benzenesulfonic acids by the simple and convenient reaction of insoluble 4-sulfo-benzenediazonium chloride with some (hetero)cyclic amines of various ring sizes is reported. The c
Externí odkaz:
https://doaj.org/article/3fc65b08b9f140a496fe5fd56287b05d
Publikováno v:
Chirality. 24:810-816
A synthesis of diastereomeric bicyclic dibenzoyl esters derived from enantiomerically pure (1S,5S)-bicyclo[3.3.1]nonane-2,6-dione was accomplished. Molecules containing two benzoyl chromophores with different configuration in the bicyclic framework w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b0e39e67d58c4c78525e937b707df8a
https://doi.org/10.1002/chir.22075
https://doi.org/10.1002/chir.22075
Autor:
Edvinas Orentas, Eugenius Butkus, Sigitas Stončius, Ola F. Wendt, Kenneth Wärnmark, Lars Öhrström
Publikováno v:
Journal of the American Chemical Society. 128:8272-8285
In an approach to helical self-aggregation, C2-symmetric cavity compounds based on the fusion of the bicyclo[3.3.1]nonane and indole framework and incorporating two 2-pyridone hydrogen-bonding motifs, compounds (-)-4 (pyrrole N-butyl) and (-)-5 (pyrr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6818084200a0fb20b859eb28748d81a
https://doi.org/10.1021/ja061160z
https://doi.org/10.1021/ja061160z
Autor:
Sigitas Stončius, Eugenius Butkus, Philip J. Stephens, David M. McCann, T C Flood, Frank J. Devlin, James R. Cheeseman
Publikováno v:
The Journal of Organic Chemistry. 70:3903-3913
[reaction: see text] The Baeyer-Villiger oxidation of (+)-(1R,5S)-bicyclo[3.3.1]nonane-2,7-dione, 1, can lead to four keto-lactone products, 2a-d. A single isomer is obtained experimentally. We have used IR and VCD spectroscopies to identify the stru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5889d60ca56543056c4aba58c16ac5c9
https://doi.org/10.1021/jo047906y
https://doi.org/10.1021/jo047906y
Autor:
Valdemaras Razumas, Justas Barauskas, K. Larsson, I Svedaite, Fredrik Tiberg, Eugenius Butkus
Publikováno v:
Colloids and Surfaces B: Biointerfaces. 41:49-53
Synthesis of 1-glyceryl monooleyl ether (GME) has been accomplished yielding material of high purity (99.6%). The aqueous phase behavior of synthesized lipid has been investigated by using polarized microscopy and small angle X-ray diffraction. As a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::450e7dd9b7221632f40ab45d29dd53fa
https://doi.org/10.1016/j.colsurfb.2004.11.008
https://doi.org/10.1016/j.colsurfb.2004.11.008
Publikováno v:
Tetrahedron: Asymmetry. 15:2405-2413
Chiral bifunctional oxabicyclodecanediones (keto lactones) were synthesized from the corresponding bicyclo[3.3.1]nonane diones 1-5 by employing a regioselective Baeyer-Villiger oxidation. Enantiomers with high enantiomeric excess were obtained by chi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48773a3f46467c55c658e730c0d1531c
https://doi.org/10.1016/j.tetasy.2004.06.018
https://doi.org/10.1016/j.tetasy.2004.06.018
Publikováno v:
Synthetic Communications. 33:1595-1602
Enantiospecific synthesis of enantiomerically pure (+)-(1S,2R, 5S,6R)-endo,endo-2,6-diaminobicyclo[3.3.1]nonane was accomplished via a reaction sequence including stereospecific synthesis of the corresponding dinitro compound and the subsequent reduc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::831554a0a5068cd3f2a9ba82b166f4ad
https://doi.org/10.1081/scc-120018786
https://doi.org/10.1081/scc-120018786
Publikováno v:
Organic & Biomolecular Chemistry. 1:391-394
The synthesis of chiral 1'H-spiro[1,3-benzodioxole-2,12'-[6',10']methanocyclooct[b]indole] 3, a fused polycyclic structure derived from bicyclo[3.3.1]nonane, was accomplished via the Fisher indolization reaction. Enantiomers of this structure were ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c7a1dbd4d91d0cd25e860ca00c1d54c
https://doi.org/10.1039/b208422h
https://doi.org/10.1039/b208422h
Publikováno v:
Molecules, Vol 7, Iss 9, Pp 706-711 (2002)
Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry
Molecules; Volume 7; Issue 9; Pages: 706-711
Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry
Molecules; Volume 7; Issue 9; Pages: 706-711
Preparation of several novel potassium salts of 4-substituted aminoazo-benzenesulfonic acids by the simple and convenient reaction of insoluble 4-sulfo-benzenediazonium chloride with some (hetero)cyclic amines of various ring sizes is reported. The c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cac23630107bd614e53bd3a1e388efc
https://doi.org/10.3390/70900706
https://doi.org/10.3390/70900706
Autor:
Petr Bouř, Vladimír Setnička, Eugenius Butkus, Sigitas Stončius, Albinas Žilinskas, Marie Urbanová, Karel Volka, Ričardas Rozenbergas
Publikováno v:
Tetrahedron: Asymmetry. 13:633-638
The synthesis of chiral tricyclo[4.3.0.0 3,8 ]nonane-4,5-dione was accomplished starting from enantiomerically pure (+)-(1 S ,5 S )-bicyclo[3.3.1]nonane-2,6-dione 1 . Ring contraction of the latter with thallium(III) nitrate proceeded with high stere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2598e1b9964805802965caf1da4e4cef
https://doi.org/10.1016/s0957-4166(02)00157-x
https://doi.org/10.1016/s0957-4166(02)00157-x