- Stereoconversion of amino acids and peptides in uryl-pendant binol Schiff bases.
[作者:Park, Hyunjung;Nandhakumar, Raju;Hong, Jooyeon;Ham, Sihyun;Chin, Jik;Kim, Kwan Mook;,期刊:Chemistry-A European Journal, 页码:9935-9942 , 文章类型: 研究论文,,卷期:2008年14-32]
- (1) forms Schiff bases with a wide range of nonderivatized amino acids, including unnatural ones. Multiple hydrogen bonds, including resonance-assisted ones, fix the whole orientation of the imine and provoke structural...
- Stannylated polynorbornenes as new reagents for a clean Stille reaction.
[作者:Carrera, Nora;Gutierrez, Enrique;Benavente, Rut;Mar Villavieja, M.;Albeniz, Ana C.;Espinet, Pablo;,期刊:Chemistry-A European Journal, 页码:10141-10148 , 文章类型: 研究论文,,卷期:2008年14-32]
- New functionalized polynorbornenes have been obtained in good yields by vinylic copolymn. of norbornene with a (norbornenyl)SnBu2Cl monomer, catalyzed by [Ni(C6F5)2(SbPh3)2]. Subsequent functionalization produces a wide...
- One-pot catalytic enantioselective domino nitro-Michael/Michael synthesis of cyclopentanes with four stereocenters.
[作者:Zhao, Gui-Ling;Ibrahem, Ismail;Dziedzic, Pawel;Sun, Junliang;Bonneau, Charlotte;Cordova, Armando;,期刊:Chemistry-A European Journal, 页码:10007-10011 , 文章类型: 研究论文,,卷期:2008年14-32]
- A highly enantioselective organocatalytic one-pot synthesis of nitro-, formyl-, and ester-functionalized cyclopentanes with four stereocenters is presented. The cyclopentanes were formed as a predominant diasteroisomer ...
- Towards the IR limit of the triplet-triplet annihilation-supported up-conversion: tetraanthraporphyrin.
[作者:Yakutkin, Vladimir;Aleshchenkov, Sergei;Chernov, Sergei;Miteva, Tzenka;Nelles, Gabriele;Cheprakov, Andrei;Baluschev, Stanislav;,期刊:Chemistry-A European Journal, 页码:9846-9850 , 文章类型: 研究论文,,卷期:2008年14-32]
- A palladium tetraaryltetraanthraporphyrin complex, was shown to produce up-conversion through the energetically conjoined triplet-triplet annihilation (TTA) with excitation wavelength in IR region (l u 800 nm), excited a...
- Reversible conversion of electronic structures in a cyclic octacopper complex.
[作者:Kawamoto, Tatsuya;Nishiwaki, Masato;Nishijima, Makiko;Nozaki, Koichi;Igashira-Kamiyama, Asako;Konno, Takumi;,期刊:Chemistry-A European Journal, 页码:9842-9845 , 文章类型: 研究论文,,卷期:2008年14-32]
- A coordination compd. with a cyclic ladder Cu8S8 structure (I, R = NMe2, CF3, H) showed a clear interconversion between dicationic, monocationic, and neutral species. These octacopper complexes are regarded as a new typ...
- Highly enantioselective synthesis of b-amino acid derivatives by the Lewis base catalyzed hydrosilylation of b-enamino esters.
[作者:Zheng, Hong-Jie;Chen, Wen-Bing;Wu, Zhi-Jun;Deng, Jin-Gen;Lin, Wen-Qing;Yuan, Wei-Cheng;Zhang, Xiao-Mei;,期刊:Chemistry-A European Journal, 页码:9864-9867 , 文章类型: 研究论文,,卷期:2008年14-32]
- A new general enantioselective hydrosilylation of N-aryl b-enamino esters with trichlorosilane has been developed. The N-aryl substituent is crucial for the activity and enantioselectivity. In the presence of catalytic...
- Stereochemical assignment and first synthesis of the core of miharamycin antibiotics.
[作者:Marcelo, Filipa;Jimenez-Barbero, Jesus;Marrot, Jerome;Rauter, Amelia P.;Sinay, Pierre;Bleriot, Yves;,期刊:Chemistry-A European Journal, 页码:10066-10073 , 文章类型: 研究论文,,卷期:2008年14-32]
- The relative configuration at C-6' of nucleoside antibiotic miharamycin A has been elucidated by NMR spectroscopy and proved to be S. The total synthesis of miharamycin B has also been investigated, which has led to the...
- Theoretical study on the factors controlling the stability of the borate complexes of ribose, arabinose, lyxose, and xylose.
[作者:Sponer, Judit E.;Sumpter, Bobby G.;Leszczynski, Jerzy;Sponer, Jiri;Fuentes-Cabrera, Miguel;,期刊:Chemistry-A European Journal, 页码:9990-9998 , 文章类型: 研究论文,,卷期:2008年14-32]
- Recent exptl. studies suggest that complexation with borate minerals stabilizes ribose, and that the borate complex of ribose is more stable than those of related aldopentoses, i.e., arabinose, lyxose, and xylose. These ...
- Oxidation by oxygen and sulfur of tin(IV) derivatives containing a redox-active o-amidophenolate ligand.
[作者:Piskunov, Alexandr V.;Mescheryakova, Irina N.;Fukin, Georgii K.;Baranov, Evgenii V.;Hummert, Markus;Shavyrin, Andrei S.;Cherkasov, Vladimir K.;Abakumov, Gleb A.;,期刊:Chemistry-A European Journal, 页码:10085-10093 , 文章类型: 研究论文,,卷期:2008年14-32]
- Oxidn. of tin(IV) o-amidophenolate complexes [Sn(ap)Ph2] (1) and [Sn(ap)Et2(thf)] (2) (ap = dianion of 4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzoquinone (ImQ)) with mol. oxygen and sulfur in toluene solns. ...
- Highly enantioselective hydrogenation of enol ester phosphonates: a versatile procedure for the preparation of chiral b-hydroxyphosphonates.
[作者:Vargas, Sergio;Suarez, Andres;Alvarez, Eleuterio;Pizzano, Antonio;,期刊:Chemistry-A European Journal, 页码:9856-9859 , 文章类型: 研究论文,,卷期:2008年14-32]
- Rhodium catalysts with chiral phosphine-phosphite ligands facilitate the enantioselective hydrogenation of b-acyloxy a,b-unsatd. phosphonates, affording b-acyloxyphosphonates in high enantiomeric excess. These products ...
- Effect of the nature of the metal atom on hydrogen bonding and proton transfer to [Cp*MH3(dppe)]: tungsten versus molybdenum.
[作者:Belkova, Natalia V.;Besora, Maria;Baya, Miguel;Dub, Pavel A.;Epstein, Lina M.;Lledos, Agusti;Poli, Rinaldo;Revin, Pavel O.;Shubina, Elena S.;,期刊:Chemistry-A European Journal, 页码:9921-9934 , 文章类型: 研究论文,,卷期:2008年14-32]
- The hydrogen-bonding and proton-transfer pathway to complex [Cp*W(dppe)H3] (Cp* = h5-C5Me5; dppe = Ph2PCH2CH2PPh2) was investigated exptl. by IR, NMR, UV-vis. spectroscopy in the presence of fluorinated alcs., p-nitrophe...
- Comparison of the surprising metal-ion-binding properties of 5- and 6- uracilmethylphosphonate (5Umpa2- and 6Umpa2-) in aqueous solution and crystal structures of the dimethyl and di(isopropyl) esters of H2(6Umpa).
[作者:Freisinger, Eva;Griesser, Rolf;Lippert, Bernhard;Moreno-Luque, Cristobal F.;Niclos-Gutierrez, Juan;Ochocki, Justyn;Operschall, Bert P.;Sigel, Helmut;,期刊:Chemistry-A European Journal, 页码:10036-10046 , 文章类型: 研究论文,,卷期:2008年14-32]
- nucleotide analogs are in the focus of anticancer and antiviral research. Connected metabolic reactions involve metal ions; therefore, in this work the stability consts. were detd. for M(Umpa) complexes (M2+ = Mg2+, Ca2+...
- Noduliprevenone: a novel heterodimeric chromanone with cancer chemopreventive potential.
[作者:Pontius, Alexander;Krick, Anja;Kehraus, Stefan;Foegen, Silke E.;Mueller, Michael;Klimo, Karin;Gerhaeuser, Clarissa;Koenig, Gabriele M.;,期刊:Chemistry-A European Journal, 页码:9860-9863 , 文章类型: 研究论文,,卷期:2008年14-32]
- The fungus Nodulisporium is an endophyte of a Mediterranean alga, and produces the novel polyketide noduliprevenone, an unprecedented structure consisting of two uniquely modified xanthone-derived units. The abs. configu...
- Nanoparticle-based electrochemical immunosensor for the detection of phosphorylated acetylcholinesterase: an exposure biomarker of organophosphate pesticides and nerve agents.
[作者:Liu, Guodong;Wang, Jun;Barry, Richard;Petersen, Catherine;Timchalk, Charles;Gassman, Paul L.;Lin, Yuehe;,期刊:Chemistry-A European Journal, 页码:9951-9959 , 文章类型: 研究论文,,卷期:2008年14-32]
- A nanoparticle-based electrochem. immunosensor has been developed for the detection of phosphorylated acetylcholinesterase (AChE), which is a potential biomarker of exposure to organophosphate (OP) pesticides and chem. w...
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