Zobrazeno 1 - 10
of 59
pro vyhledávání: '"I. Tömösközi"'
Publikováno v:
Tetrahedron: Asymmetry. 7:2447-2452
The determination of configuration at phosphorous in enantiomerically pure nucleoside-phosphorothioates is reported. T-ROESY experiments and the trend observed in vicinal carbon-phosphorus couplings were used for stereochemical assignment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02367007cf0eab3c86899d5c476ef94b
https://doi.org/10.1016/0957-4166(96)00303-5
https://doi.org/10.1016/0957-4166(96)00303-5
Publikováno v:
Tetrahedron. 51:6797-6804
Separated P-diastereomers of H-phosphonate diesters gave exclusively one isomer of amidates on treatment with CCl 4 + butylamine with inversion of configuration. NOE experiments and the trend observed in 3 J(C2-P) and 3 J(C4-P) couplings were applied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7d8f4cfaa53020158ece117e31ad9f5
https://doi.org/10.1016/0040-4020(95)00313-w
https://doi.org/10.1016/0040-4020(95)00313-w
Publikováno v:
Tetrahedron. 48:10345-10352
Reaction of formaldehyde with the title olefinic lactone in acetic acid affords diacetate of 1,3-diol ( 2a ) as the main product in 50 – 60% yield via regioselective trans-addition. Less favourable results were obtained with related bicyclic deriva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17b04a3def119fd4f454b8341b4574b0
https://doi.org/10.1016/s0040-4020(01)88339-3
https://doi.org/10.1016/s0040-4020(01)88339-3
Publikováno v:
Journal of Medicinal Chemistry. 33:1353-1360
Enantiomerically pure (+)- and (-)-carbocyclic thymidine, (-)-carbocyclic 3'-epi-thymidine, (+)-carbocyclic 3'-deoxy-3'-azidothymidine, (+)-carbocyclic 2,3'-O-anhydrothymidine, (+)-carbocyclic 3'-O,6'-methylenethymidine, and (+)-(6'S)-carbocyclic 6'-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2f607fbb2084f3ed530c7f84e3bbb28
https://doi.org/10.1021/jm00167a011
https://doi.org/10.1021/jm00167a011
Publikováno v:
Nucleosides, nucleotidesnucleic acids. 20(9)
Synthesis and stereochemical characterization of enantiomerically pure nucleoside-phosphorothioselenoates are reported. The effects of solvent and temperature on the vicinal carbon-phosphorus couplings are described and the results are interpreted in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a95deae1371fe9c9dc9f4d46c04e4e57
https://pubmed.ncbi.nlm.nih.gov/11580189
https://pubmed.ncbi.nlm.nih.gov/11580189
Autor:
I. Tömösközi, Karoly Kanai
Publikováno v:
Tetrahedron Letters. 31:403-404
Unexpected dihydroxylation of 7-oxo-prostacyclin and a related α-oxo enol ether by air is reported.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::896f0884737ab05e8269ab7bde04df39
https://doi.org/10.1016/s0040-4039(00)94566-0
https://doi.org/10.1016/s0040-4039(00)94566-0
Publikováno v:
Tetrahedron Letters. 17:4639-4642
Aus dem bicyclischen Lacton (I) erhalt man bei der Prins-Reaktion mit Formaldehyd und Saure uber die Zwischenstufe (II) stereospezifisch die Addukte (IIIa) im Gemisch mit den Monoacetaten (IIIb) und (IIIc).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57c088a7fc0ef921b456d7e1b8a44008
https://doi.org/10.1016/s0040-4039(00)93954-6
https://doi.org/10.1016/s0040-4039(00)93954-6
Publikováno v:
Tetrahedron Letters. 28:6381-6384
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59fd7016a0b71803404e6df9c8f0e896
https://doi.org/10.1016/s0040-4039(01)91379-6
https://doi.org/10.1016/s0040-4039(01)91379-6
Publikováno v:
Tetrahedron Letters. 21:4035-4038
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b2e92ad7fe10af8fbbe06cd9e5b2ca8
https://doi.org/10.1016/s0040-4039(00)92864-8
https://doi.org/10.1016/s0040-4039(00)92864-8
Publikováno v:
Tetrahedron Letters. 23:1091-1094
A 5-step synthesis of the title compound via selective hydroxylation of Δ 6 -PGI 1 derivative is presented including stereochemistry and conformational analysis of intermediates.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee42feee392783ccc158b72fc2c59b6e
https://doi.org/10.1016/s0040-4039(00)87029-x
https://doi.org/10.1016/s0040-4039(00)87029-x