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Synthesis and conformational analysis of AzAsx-containing oligopeptides

SummaryFor the sake of improving synthetic methods and evaluating the conformational perturbation induced by the substitution of AzAsx for the Asx residue in the cognate dipeptide R-CO-Asx-Pro-NHR, we prepared the AzAsx-dipeptide sequence by making use of the crystalline triphosgene.

出版机构:Kluwer Academic Publishers

刊物名称:Letters in Peptide Science

出版时间:1995

ISSN:0929-5666

数据源:报刊文摘

Phosphine Ligands in the Palladium-Catalysed Methoxycarbonylation of Ethene: Insights into the Catalytic Cycle through an HP NMR Spectroscopic Study

Novel cis-1,2-bis(di-tert-butyl-phosphinomethyl) carbocyclic ligands 6-9 have been prepared and the corresponding palladium complexes [Pd(O3SCH3)(L-L)][O3SCH3] (L-L=diphosphine) 32-35 synthesised and characterised by NMR spectroscopy and X-ray diffraction.

出版机构:WILEY‐VCH Verlag

刊物名称:Chemistry - A European Journal

出版时间:2010

ISSN:0947-6539

数据源:报刊文摘

Schrittweise Darstellung von verzweigten tripodalen Chlor-Methyl-Siloxanen der allgemeinen Formel tBuSi[{OSiMe2}yOSiMe3-xClx]3 [x = 0-3; y = 0-2] sowie Synthese der Silanole tBuSi[(OSiMe2)xOH]3 [x = 1, 2] und des bicyclischen Siloxans tBuSi(OSiMe2O)3SitBu

The branched tripodal chloro-methyl-siloxanes of the general formula tBuSi[{OSiMe2}yOSiMe3-xClx]3 [x = 0-3; y = 0-2] were synthesized, starting with tert-Butyl-trisilanol (1).

出版机构:WILEY‐VCH Verlag

刊物名称:Zeitschrift für anorganische und allgemeine Chemie

出版时间:2010

ISSN:0044-2313

数据源:报刊文摘

Intrinsic Disorder and Function of the HIV-1 Tat Protein

The type 1 Human Immunodeficiency Virus transcriptional regulator Tat is a small RNA-binding protein essential for viral gene expression and replication.

出版机构:Bentham Science Publishers

刊物名称:Protein & Peptide Letters

出版时间:2010

ISSN:0929-8665

数据源:报刊文摘

Diaminouronium Nitriminotetrazolates – Thermally Stable Explosives

Diaminouronium 5?nitriminotetrazolate (1) and diaminouronium 1?methyl?5?nitrimino?tetrazolate (2) were synthesized by the reaction of diaminourea with 5?nitriminotetrazole (3) and 1?methyl?5?

出版机构:WILEY‐VCH Verlag

刊物名称:Zeitschrift für anorganische und allgemeine Chemie

出版时间:2010

ISSN:0044-2313

数据源:报刊文摘

Interaction of ethyltrichlorostannane with N,N‐dimethylamides of O‐ trimethylsilyl‐α‐hydroxyacids

Reactions of ethyltrichlorostannane with N,N?dimethylamides of 2?(trimethylsilyl)glycolic (2a), 2(S)?lactic [(S)?

出版机构:John Wiley & Sons, Ltd.

刊物名称:Applied Organometallic Chemistry

出版时间:2010

ISSN:0268-2605

数据源:报刊文摘

Structural, spectroscopic and theoretical studies of short OHO hydrogen bonds in 2:1 complexes of 1-methyl-6-oxyquinolinium betaine with mineral acids

Bis(1-methyl-6-oxyquinolinium) hydroiodide, (6QB)2HI (1), has been characterized by X-ray diffraction, B3LYP calculations, FTIR and NMR spectroscopy. The complex crystallizes in triclinic P 1 ? space group. A pair of 6QB molecules is bridged by the O?H?O hydrogen bond of 2.450(2)?.

出版机构:Elsevier Science

刊物名称:Journal of Molecular Structure

出版时间:2010

ISSN:0022-2860

数据源:报刊文摘

Acid-catalyzed rearrangement of 3-(β-2-aminostyryl)quinoxalin-2(1H)ones—a new and efficient method for the synthesis of 2-benzimidazol-2-ylquinolines

highly efficient, one-step, versatile method for the synthesis of 2-benzimidazol-2-ylquinolines has been developed on the basis of an acid-catalyzed rearrangement proceeding via a novel ring contraction of 3-(?-2-aminostyryl)quinoxalin-2(1H)ones.

出版机构:Elsevier Science

刊物名称:Tetrahedron Letters

出版时间:2010

ISSN:0040-4039

数据源:报刊文摘

Effect of TiO2 addition on structure, solubility and crystallisation of phosphate invert glasses for biomedical applications

Phosphate invert glasses in the system P2O5?CaO?MgO?Na2O are completely soluble and exhibit a neutral pH in aqueous media, and they are therefore of interest for use as degradable implant materials. Their structure consists of small phosphate units such as pyrophosphate (P2O7 4 ?

出版机构:Elsevier Science

刊物名称:Journal of Non-Crystalline Solids

出版时间:2010

ISSN:0022-3093

数据源:报刊文摘

Origin of the regioselectivity in an intramolecular nucleophilic addition to arene chromium tricarbonyl complexes

The source of the regioselectivity in the intramolecular nucleophilic addition of nitrile-stabilized carbanions to arene chromium tricarbonyl complexes was investigated for seven different substitution patterns on the arenes.

出版机构:Elsevier Science

刊物名称:Inorganica Chimica Acta

出版时间:2010

ISSN:0020-1693

数据源:报刊文摘