Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Reijo Kauppinen"'
Autor:
Reijo Kauppinen, Minna Tolonen, Virpi Noponen, Elina Sievänen, Manu Lahtinen, Erkki Kolehmainen, Arto Valkonen
Publikováno v:
Molecules, Vol 12, Iss 9, Pp 2161-2178 (2007)
The synthetic method for preparing N-(3-hydroxypropyl) 3α,12α-dihydroxy-5β- cholan-24-amide can lead to formation of at least three different crystal forms – an anhydrous compound and two monohydrates. The structural
Externí odkaz:
https://doaj.org/article/da23fe2377b140a0930587ef668a2d8b
Publikováno v:
Structural Chemistry. 23:209-217
1H and 13C NMR chemical shifts have been determined and assigned based on PFG 1H, 13C HMQC, and HMBC experiments for 3-(4′-X-benzyl)-4-chromenones (Ia, X = CN and Ib, X = NO2), 3-(4′-X-benzyl)-4-thiochromenones (IIa, X = Cl and IIb, X = Br), (E)-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20e2a3c9e4c388231bddd007ba2a051b
https://doi.org/10.1007/s11224-011-9860-6
https://doi.org/10.1007/s11224-011-9860-6
Autor:
Erkki Kolehmainen, Babita Behera, Elina Sievänen, Elina Kalenius, Borys Ośmiałowski, Reijo Kauppinen
Publikováno v:
Structural Chemistry. 22:1143-1151
Intermolecular interactions of 7-(RCONH)-[1H]-2-oxo-1,8-naphthyridines (R = Me, Et, i-Pr, t-Bu, 1-adamantyl (1-Ad), CF3, and C2F5) containing ADAD quadruple hydrogen bonding motif were studied by liquid and solid state NMR, ESI-MS, IR, and DFT calcul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf6d719832c2b4cc1301dcf51ff12f06
https://doi.org/10.1007/s11224-011-9808-x
https://doi.org/10.1007/s11224-011-9808-x
Autor:
Borys Ośmiałowski, Erkki Kolehmainen, Reijo Kauppinen, Arto Valkonen, Juha Koivukorpi, Robert Dobosz, Kari Rissanen, Ryszard Gawinecki
Publikováno v:
The Journal of Physical Chemistry A. 114:10421-10426
Aggregation of 2-acylaminopyridines and their 6-methyl derivatives in chloroform solution was studied by (1)H, (13)C, and (15)N NMR spectroscopies. The results were compared with (13)C and (15)N CPMAS NMR and IR spectral as well as with X-ray structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e86ec119772ebcf42957e4dbb4f146b4
https://doi.org/10.1021/jp1063116
https://doi.org/10.1021/jp1063116
Autor:
Erkki Kolehmainen, Kari Ahonen, Babita Behera, Manu Lahtinen, Minna Tolonen, Elina Sievänen, Reijo Kauppinen, Arto Valkonen
Publikováno v:
Structural Chemistry. 21:185-190
The synthetic procedure of lithocholyl-N-(2-aminoethyl)amide yielded a mixture of several forms detected by solid state 13C CP/MAS NMR although the solution state NMR unambiguously ascertained that the compound was pure. By recrystallization from var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e18b4235d4f4cc1adda937d6be9d591
https://doi.org/10.1007/s11224-009-9560-7
https://doi.org/10.1007/s11224-009-9560-7
Publikováno v:
Crystal Growth & Design. 9:4710-4719
Combined solid-state NMR, powder, and single crystal X-ray diffraction, as well as thermoanalytical studies were performed towards the identification, isolation, and structural characterization of ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d11354d3723f4da6e05e2b7e13bc72d
https://doi.org/10.1021/cg9005828
https://doi.org/10.1021/cg9005828
Publikováno v:
Journal of Molecular Structure. 931:60-67
Tautomerism and dimerization of 2,7-disubstituted-1,8-naphtyridines has been studied theoretically by quantum chemical methods and experimentally by liquid and solid state NMR and ESI-TOF mass spectral techniques. The heterocomplex formation has been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5822eac5c9a175f32cd1b90b9c26b7b2
https://doi.org/10.1016/j.molstruc.2009.05.028
https://doi.org/10.1016/j.molstruc.2009.05.028
Publikováno v:
Journal of Molecular Structure. 930:201-208
N,N-Di-n-octyl-N,N-dimethyl cholate (1) and N,N-di-n-nonyl-N,N-dimethyl ammonium cholate (2) have been prepared by crystallization from equimolar mixtures of sodium cholate and quaternary N,N-di-n-alkyl-N,N-dimethyl (n-octyl or n-nonyl) ammonium brom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::138027fba254ee2f650481f4892c7508
https://doi.org/10.1016/j.molstruc.2009.05.018
https://doi.org/10.1016/j.molstruc.2009.05.018
Autor:
Ryszard Gawinecki, Reijo Kauppinen, Agnieszka Kuczek, Tadeusz M. Krygowski, Borys Ośmiałowski, Erkki Kolehmainen
Publikováno v:
The Journal of Organic Chemistry. 72:5598-5607
1H, 13C, and 15N NMR spectra show that an ortho-C(=O)X group present in the molecules of N-salicylideneanthranilamide (X = NH2), methyl N-salicylideneanthranilate (X = OCH3), N-salicylidene-o-aminoacetophenone (X = CH3), and their benzo analogues hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ae91ac766124e9963f04b3baafba79a
https://doi.org/10.1021/jo070454f
https://doi.org/10.1021/jo070454f
Autor:
Jari Tamminen, Elina Virtanen, Reijo Kauppinen, Pia Mänttäri, Mervi Haapala, Erkki Kolehmainen
Publikováno v:
Magnetic Resonance in Chemistry. 41:567-576
1H, 13C and 15N NMR and electrospray ionization time-of-flight mass spectrometric characterizations of five lithocholate esters of piperazine diamides are described. Two of them are cholaphane-type cyclic structures esterified with 2,2′-bipyridine-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8096ab12136f3661eff4457503e384b0
https://doi.org/10.1002/mrc.1218
https://doi.org/10.1002/mrc.1218