bluuebunny/crossref_metadata_2025 huggingface dataset:
Long Range Scattering for the Maxwell–Schrödinger System with Large Magnetic Field Data and Small Schrödinger Data
Authors: Ginibre Jean , Velo Giorgio
Published: November 2007

We study the theory of scattering for the Maxwell–Schrödinger system in the Coulomb gauge in space dimension 3. We prove in particular the existence of modiﬁed wave operators for that system with no size restriction on the magnetic ﬁeld data in the framework of a direct method which requires smallness of the Schrödinger data, and we determine the asymptotic behaviour in time of solutions in the range of the wave operators.
On the Combinatorics of Unramiﬁed Admissible Modules
Authors: Kato Syu
Published: November 2007

We construct a certain topological algebra

\mathrm{Ext}^{\#}_{G^∨} X(χ)

from a Deligne–Langlands parameter space

X(χ)

attached to the group of rational points of a connected split reductive algebraic group

G

over a non-Archimedean local ﬁeld

\mathbb K

. Then we prove the equivalence between the category of continuous modules of

\mathrm{Ext}^{\#}_{G^∨} X(χ)

and the category of unramiﬁed admissible modules of

G(\mathbb K)

with a generalized inﬁnitesimal character corresponding to

χ

. This is an analogue of Soergel’s conjecture which concerns the real reductive setting.
$L^2$-Betti Numbers of Inﬁnite Conﬁguration Spaces
Authors: Albeverio Sergio , Daletskii Alexei
Published: November 2007

The space

Γ_X

of all locally ﬁnite conﬁgurations in a inﬁnite covering

X

of a compact Riemannian manifold is considered. The de Rham complex of square-integrable differential forms over

Γ_X

, equipped with the Poisson measure, and the corresponding de Rham cohomology and the spaces of harmonic forms are studied. A natural von Neumann algebra containing the projection onto the space of harmonic forms is constructed. Explicit formulae for the corresponding trace are obtained. A regularized index of the Dirac operator associated with the de Rham differential on the conﬁguration space of an inﬁnite covering is considered.
Inﬁnite Dimensionality of the Middle $L^2$-cohomology on Non-compact Kähler Hyperbolic Manifolds
Authors: Chen Bo-Yong
Published: November 2007

We prove that the space of

L^2

harmonic forms of middle degree is inﬁnite dimensional on any non-compact Kähler hyperbolic manifold.
Noise, Hot Carrier Effects
Authors: Matulionis Arvydas
Published: November 2007

The sections in this article are

Introduction

Hot‐Electron Velocity Fluctuations

Theoretic Background

Experimental Techniques

Experimental Results on Hot‐Electron Noise
The amicus view: What they're saying about Hall Street Associates, and why
Authors: Bleemer Russ
Published: November 2007

Excerpts are provided from each of the five friend‐of‐the‐court briefs in Hall Street Associates v. Mattel, which is to be argued this month in the U.S. Supreme Court, as well as the filers' interests in the case. The Court also takes another arbitration case for the current term, and the American Arbitration Association issues new mediation rules
Lymphatic vasculature: a molecular perspective
Authors: Hosking Brett , Makinen Taija
Published: November 2007

The lymphatic vasculature comprises an intricate network of vessels critical for fluid homeostasis, immune surveillance and fat absorption. Recent studies have provided insights into the developmental processes and molecular mechanisms controlling the formation and remodelling of the lymphatic vessels. These studies have further demonstrated the essential and active role of the lymphatic vessels in various pathological conditions and advanced our understanding of the progression of human diseases, such as inflammation and tumorigenesis. In the context of the latest exciting findings, we review here the current understanding of the mechanisms of lymphatic development and contribution of lymphatic vessels to pathological conditions. BioEssays 29:1192–1202, 2007. © 2007 Wiley Periodicals, Inc.
Cylindromatosis and the CYLD gene: new lessons on the molecular principles of epithelial growth control
Authors: Massoumi Ramin , Paus Ralf
Published: November 2007

Analysing cylindromatosis and the associated defects in the CYLD gene is providing novel insights into the molecular principles of epithelial growth control and carcinogenesis in, and beyond, the skin. In this review, we summarize the histopathology and histogenesis of cylindromas, and the available genetic information on patients with these skin appendage tumors. Focusing on recent data concerning the normal functions and signaling interactions of the CYLD gene product, we explain how CYLD interferes with TNF‐α or TLR‐mediated signaling as well as with JNK or NF‐κB‐dependent p65/50 signaling to limit inflammation. In addition, we delineate how CYLD interferes with activation of the proto‐oncogene Bcl3 and with cyclin D1 expression to limit tumorigenesis, and chart how tumor growth‐promoting agents or UV light and inflammatory mediators can activate CYLD. We argue that these recent insights into CYLD function and cylindroma pathogenesis may lead to the development of novel molecular strategies for cancer prevention and treatment. BioEssays 29:1203–1214, 2007. © 2007 Wiley Periodicals, Inc.
Do “heavy” eaters live longer?
Authors: Shchepinov Mikhail S.
Published: November 2007

A new hypothesis is put forward, linking cellular endurance with dietary consumption of stable heavy isotopes. Due to the isotope effect, biomolecules that incorporate heavier isotopes give rise to more stable molecular structures with increased resistance to damages associated with aging and age‐related disease. The inclusion of heavy isotopes might be either active (selection for heavier isotopes) or passive (incorporation reflecting the existing abundance). The hypothesis links consumption of foods relatively rich in heavy isotopes (such as 13C and D, derived from C4‐plants), especially at the early stages of the organism's development, with enhanced longevity. Implications of diets and intestinal microflora are also discussed. BioEssays 29:1247–1256, 2007. © 2007 Wiley Periodicals, Inc.
Systems biology of transcription control in macrophages
Authors: Ravasi Timothy , Wells Christine A. , Hume David A.
Published: November 2007

The study of the mammalian immune system offers many advantages to systems biologists. The cellular components of the mammalian immune system are experimentally tractable; they can be isolated or differentiated from in vivo and ex vivo sources and have an essential role in health and disease. For these reasons, the major effectors cells of the innate immune system, macrophages, have been a particular focus in international genome and transcriptome consortia. Genome‐scale analysis of the transcriptome, and transcription initiation has enabled the construction of predictive models of transcription control in macrophages that identify the points of control (the major nodes of networks) and the ways in which they interact. BioEssays 29:1215–1226, 2007. © 2007 Wiley Periodicals, Inc.
Transversion‐enriched sequence saturation mutagenesis (SeSaM‐Tv+): A random mutagenesis method with consecutive nucleotide exchanges that complements the bias of error‐prone PCR
Authors: Seng Wong Tuck , Roccatano Danilo , Loakes David , Tee Kang Lan , Schenk Alexander , Hauer Bernhard , Schwaneberg Ulrich
Published: November 2007

The sequence saturation mutagenesis (SeSaM) method has been advanced to a random mutagenesis method with adjustable mutational biases. SeSaM offers, for example, a bias that is complementary to error‐prone (ep) PCR and is enriched in transversions (SeSaM‐Tv+). dNTPαS and three degenerate bases (P, K and I) are used to control mutational bias flexibly. After quantifying incorporation rates of dPTP, dKTP and dITP by terminal transferase using a luciferase‐based assay and investigating the read and/or write activities of eight DNA polymerases, a transversionenriched protocol has been developed. In a mutant library generated using dGTPαS and dPTP, transversion frequencies of 16.22–22.58% (G→T) and 6.38–9.69% (G→C) were achieved. These mutational spectra are complementary and occur twice as frequently in comparison to standard epPCR methods employing Taq DNA polymerase. For generating more complex mutant libraries, the occurrence of consecutive nucleotide exchanges was increased by 105–106‐fold compared to epPCR. Finally, 16.7% of all sequenced mutants contained consecutive nucleotide exchanges composed mainly of a transversion followed by a transition.
Cyclotides as natural anti‐HIV agents
Authors: Ireland David C. , Wang Conan K. L. , Wilson Jennifer A. , Gustafson Kirk R. , Craik David J.
Published: November 2007

Cyclotides are disulfide rich macrocyclic plant peptides that are defined by their unique topology in which a head‐to‐tail cyclized backbone is knotted by the interlocking arrangement of three disulfide bonds. This cyclic cystine knot motif gives the cyclotides exceptional resistance to thermal, chemical, or enzymatic degradation. Over 100 cyclotides have been reported and display a variety of biological activities, including a cytoprotective effect against HIV infected cells. It has been hypothesized that cyclotides from one subfamily, the Möbius subfamily, may be more appropriate than bracelet cyclotides as drug candidates given their lower toxicity to uninfected cells. Here, we report the anti‐HIV and cytotoxic effects of three cyclotides, including two from the Möbius subfamily. We show that Möbius cyclotides have comparable inhibitory activity against HIV infection to bracelet cyclotides and that they are generally less cytotoxic to the target cells. To explore the structure activity relationships (SARs) of the 29 cyclotides tested so far for anti‐HIV activity, we modeled the structures of the 21 cyclotides whose structures have not been previously solved. We show that within cyclotide subfamilies there is a correlation between hydrophobicity of certain loop regions and HIV inhibition. We also show that charged residues in these loops impact on the activity of the cyclotides, presumably by modulating membrane binding. In addition to providing new SAR data, this report is a mini‐review that collates all cyclotide anti‐HIV information reported so far and provides a resource for future studies on the therapeutic potential of cyclotides as natural anti‐HIV agents. © 2007 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 90: 51–60, 2008.

This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
A viable synthesis of N‐methyl cysteine
Authors: Ruggles Erik L. , Flemer Stevenson , Hondal Robert J.
Published: November 2007

While a number of methods exist for the production of N‐methyl amino acid derivatives, the methods for the production of N‐methyl cysteine (MeCys) derivatives are suboptimal as they either have low yields or lead to significant sulfhydryl deprotection during the synthetic protocol. This article focuses on the generation of MeCys and its subsequent use in Fmoc solid‐phase peptide synthesis for the generation of N‐methyl cystine containing peptides. Various methods for amino methylation of cysteine, in the presence of acid labile or acid stable sulfhydryl protecting groups, are compared and contrasted. Production of MeCys is best attained through formation of an oxazolidinone precursor obtained via cyclization of FmocCys(StBu)OH. Following oxazolidinone ring opening, iminium ion reduction generates FmocMeCys(StBu)OH with an overall yield of 91%. The key to this procedure is using an electronically neutral Cys‐derivative, as other polar Cys‐derivatives gave poor results using the oxazolidinone procedure. Subsequently, the FmocMeCys(StBu)OH building block was used to replace a Cys residue with a MeCys residue in two peptide fragments that correspond to the active sites of glutaredoxin and thioredoxin reductase. The examples used here highlight the use of a MeCys(StBu) derivative, which allows for facile on‐resin conversion to a MeCys(5‐Npys) residue that can be subsequently used for intramolecular disulfide bond formation with concomitant cleavage of the peptide from the solid support. © 2007 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 90: 61–68, 2008.

This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
A Cellular‐Automata Model of the Structure of Bulk Water
Authors: Kier Lemont B.
Published: November 2007

Cellular‐automata (CA) models of bulk water in the liquid state produce a series of patterns of the water structure, differing in the extent of binding of H2O molecules. The fractions of H2O molecules unbound, and those bound to one, two, three or four neighbors, designated f0, f1, f2, f3, and f4, resp., become structural descriptors of water at various temperatures in the liquid state. The significance of these descriptors is challenged by examining their ability to correlate with a variety of physical properties. The quality of these relational equations demonstrates that the fx values present a structure alternative to the temperature (another physical property) in describing the structure of bulk water.
Cellular‐Automata Models of Solid–Liquid Interfaces
Authors: Cheng Cho‐Kun , Kier Lemont B.
Published: November 2007

A series of cellular‐automata (CA) models have been created, simulating relationships between water (or aqueous solutions) and solid surfaces of differing hydropathic (i.e., hydrophilic or hydrophobic) nature. Both equilibrium‐ and dynamic‐flow models were examined, employing simple breaking and joining rules to simulate the hydropathic interactions. The CA simulations show that water accumulates near hydrophilic surfaces and avoids hydrophobic surfaces, forming concave‐up and concave‐down meniscuses, resp., under equilibrium conditions. In the dynamic‐flow simulations, the flow rate of water was found to increase past a wall surface as the surface became less hydrophilic, reaching a maximum rate when the solid surface was of intermediate hydropathic state, and then declining with further increase in the hydrophobicity of the surface. Solution simulations show that non‐polar solutes tend to achieve higher concentrations near hydrophobic‐wall surfaces, whereas other hydrophobic/hydrophilic combinations of solutes and surfaces do not show such accumulations. Physical interpretations of the results are presented, as are some possible biological consequences.
Automated System for Gene Annotation and Metabolic Pathway Reconstruction Using General Sequence Databases
Authors: Alves João M. P. , Buck Gregory A.
Published: November 2007

Despite the growing number of genomes published or currently being sequenced, there is a relative paucity of software for functional classification of newly discovered genes and their assignment to metabolic pathways. Available software for such analyses has a very steep learning curve and requires the installation, configuration, and maintenance of large amounts of complex infrastructure, including complementary software and databases. Many such tools are restricted to one or a few data sources and classification schemes. In this work, we report an automated system for gene annotation and metabolic pathway reconstruction (ASGARD), which was designed to be powerful and generalizable, yet simple for the biologist to install and run on centralized, commonly available computers. It avoids the requirement for complex resources such as relational databases and web servers, as well as the need for administrator access to the operating system. Our methodology contributes to a more rapid investigation of the potential biochemical capabilities of genes and genomes by the biological researcher, and is useful in biochemical as well as comparative and evolutionary studies of pathways and networks.
Reply to the Comment on “The Water‐Exchange Mechanism of the [UO2(OH2)5]2+ Ion Revisited: The Importance of a Proper Treatment of Electron Correlation” [F. P. Rotzinger, Chem. Eur. J. 2007, 13, 800]
Authors: Rotzinger François P.
Published: November 2007

Not fulfilled satisfactorily: As a reply to the preceding Comment of V. Vallet, U. Wahlgren, and I. Grenthe, I prove that the conditions which must be fulfilled for the application of the MP2 technique are not satisfied unequivocally for uranyl(VI) complexes—a plea for a careful selection of the computational methods.
Noncovalently Supported Heterogeneous Chiral Amine Catalysts for Asymmetric Direct Aldol and Michael Addition Reactions
Authors: Luo Sanzhong , Li Jiuyuan , Zhang Long , Xu Hui , Cheng Jin‐Pei
Published: November 2007

A new strategy for the immobilization of asymmetric organocatalysts by combining polystyrene (PS)/sulfonic acids and chiral amines in situ through acid–base interactions is presented. The PS/sulfonic acids play a dual role as catalyst anchors and modulators for activity and stereoselectivity. Different types of polymeric sulfonic acids were examined and 1 % divinylbenzene (DVB) cross‐linked PS/sulfonic acid 1 e with a medium loading of sulfonic acid moieties was found to be the optimal support. Furthermore, the noncovalency of this system allows combinatorial screening of optimal catalysts for the targeted reactions. In this regard, highly efficient and enantioselective heterogeneous catalysts were identified for the asymmetric direct aldol and Michael addition reactions. The catalysts could be easily recovered by filtration and reused for six cycles with similar stereoselectivity but slightly decreased activity. Significantly, the deactivated catalysts could be regenerated following an acidic washing/amine recharging procedure.
Response to “Comments on a Possible Transition to Solid‐Phase Homochirality”
Authors: Blackmond Donna G.
Published: November 2007

As part of an ongoing discussion comparing models for the evolution of homochirality, we address the preceding Correspondence by Ribó and co‐workers. We demonstrate that our previous Concept article did not include errors concerning solubility behavior and we address the challenge of representing equilibrium phase behavior for systems of racemizing enantiomers. In addition we re‐emphasize the point that the homochiral state is not inherently more stable than the heterochiral state and we show that concerning this point the Ribó treatise misinterprets the Frank model for the evolution of homochirality.
Ab initio Structural, Electronic and Optical Properties of Orthorhombic CaGeO3.
Authors: Henriques J. M. , Caetano E. W. S. , Freire V. N. , da Costa J. A. P. , Albuquerque E. L.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Electrochemical Sensor with Record Performance Characteristics.
Authors: Karyakin Arkady A. , Puganova Elena A. , Bolshakov Ivan A. , Karyakina Elena E.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Facile Synthesis of 4‐Hydroxycoumarin and 4‐Hydroxy‐2‐quinolone Derivatives.
Authors: Park Su‐Jin , Lee Jong‐Cheol , Lee Kee‐In
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Lewis Acid Mediated Highly Regioselective SN2‐Type Ring‐Opening of 2‐Aryl‐N‐tosylazetidines and Aziridines by Alcohols.
Authors: Ghorai Manas K. , Das Kalpataru , Shukla Dipti
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Supercritical Carbon Dioxide and Poly(ethylene Glycol): An Environmentally Benign Biphasic Solvent System for Aerobic Oxidation of Styrene.
Authors: Wang Jin‐Quan , Cai Fei , Wang Er , He Liang‐Nian
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Method for Synthesis of Aldehydes from Esters by Sodium Diisobutyl‐t‐butoxyaluminum Hydride.
Authors: Song Jung In , An Duk Keun
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Membrane‐Active Calixarenes: Toward “Gating” Transmembrane Anion Transport.
Authors: Okunola Oluyomi A. , Seganish Jennifer L. , Salimian Kevan J. , Zavalij Peter Y. , Davis Jeffery T.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Water‐Soluble Nucleotide‐Calixarene Conjugates and Preliminary Investigation of Their in vitro DNA Replication Inhibitory Activity.
Authors: Consoli Grazia M. L. , Granata Giuseppe , Galante Eva , Di Silvestro Isabella , Salafia Laura , Geraci Corrada
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
exo and endo Isomerism of Subvalent Tin and Germanium Complexes Derived from 1,3‐Diethers of p‐tert‐Butylcalix[4]arene.
Authors: Hascall. Tony Hascall. Tony , Pang Keliang , Parkin Gerard
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Tubular Products from Calixarene—Cyclodextrin Coupling.
Authors: Hocquelet Celine , Jankowski Christopher K. , Mauclaire Laurent
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Metal‐Free Access to Fully Substituted Skipped Diynes. An Efficient Chemodifferentiating A2BB′ 4CR Manifold.
Authors: Tejedor David , Lopez‐Tosco Sara , Gonzalez‐Platas Javier , Garcia‐Tellado Fernando
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Medium‐Sized Carbocycles by a Zirconocene‐Catalyzed Tandem Formal Ring Expansion—Magnesation Reaction of Alkenyl‐Substituted Cyclic Enol Ethers.
Authors: Barluenga Jose , Alvarez‐Rodrigo Lucia , Rodriguez Felix , Fananas Francisco J.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Mediated Direct Coupling of Silylated Arylalkynes with Propargylic Chlorides: An Efficient Access to Functionalized Conjugated Allenynes.
Authors: Girard Delphine , Broussous Sylvie , Provot Olivier , Brion Jean‐Daniel , Alami Mouad
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Convenient Synthesis of Stable Aldimine—Borane Complexes, Chiral δ‐Amino Alcohols, and γ‐Substituted GABA Analogues from Nitriles.
Authors: Ramachandran P. Veeraraghavan , Biswas Debanjan
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Highly Enantioselective Synthesis of (E)‐Allylic Alcohols.
Authors: Wu Hsyueh‐Liang , Wu Ping‐Yu , Uang Biing‐Jiun
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Catalytic Cyanosilylation of Ketones with Simple Phosphonium Salt.
Authors: Wang Xiu , Tian Shi‐Kai
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Disubstituted Ynamides from β,β‐Dichloroenamides and Electrophiles.
Authors: Rodriguez David , Martinez‐Esperon M. Fernanda , Castedo Luis , Saa Carlos
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Preparation and Reaction of Phenylsulfonyl‐Substituted Dizinciomethane.
Authors: Baba Yoko , Toshimitsu Akio , Matsubara Seijiro
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Anodic Oxidation of Catechols in the Presence of 1,3‐Indandione. A Green Electrosynthetic Approach to New Catechol Derivatives.
Authors: Raoof Jahan‐Bakhsh , Kiani Abolfazl , Ojani Reza , Khalilzadeh Mohammad A.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Ladder‐Type π‐Conjugated Heteroacenes via Palladium‐Catalyzed Double N‐Arylation and Intramolecular O‐Arylation.
Authors: Kawaguchi Keiko , Nakano Koji , Nozaki Kyoko
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Derivatives of α,β‐Dehydro Amino Acids. Part 2. New Synthesis of 2,4‐Disubstituted 1‐Aminoimidazol‐5‐ones from N‐Substituted α,β‐Unsaturated α‐Amino Acid Hydrazides.
Authors: Topuzyan V. O. , Arutyunyan L. G. , Oganesyan A. A. , Panosyan G. A.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Chiral Ruthenium Lewis Acid Catalyzed Nitrile Oxide Cycloadditions.
Authors: Brinkmann Yasmin , Madhushaw Reniguntala J. , Jazzar Rodolphe , Bernardinelli Gerald , Kuendig E. Peter
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Green Method for the Synthesis of 2‐Arylbenzothiazoles.
Authors: Mukhopadhyay Chhanda , Datta Arup
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
1‐Protected 5‐Amido 1,2,3‐Triazoles via Ruthenium‐Catalyzed [3 + 2] Cycloaddition of Azides and Ynamides.
Authors: Oppilliart Sophie , Mousseau Guillaume , Zhang Li , Jia Guochen , Thuery Pierre , Rousseau Bernard , Cintrat Jean‐Christophe
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Indolo[1,2‐f]phenanthridines from Palladium‐Catalyzed Reactions of Arynes.
Authors: Xie Chungsong , Zhang Yuhong , Huang Zedu , Xu Peixin
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A New Approach to Polycyclic Azonia Cations by Ring‐Closing Metathesis.
Authors: Nunez Ana , Cuardro Ana M. , Alvarez‐Builla Julio , Vaquero Juan J.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel Synthesis of 7‐Fluoro‐8‐(trifluoromethyl)‐1H‐1,6‐naphthyridin‐4‐one Derivatives: Intermolecular Cyclization of an N‐Silyl‐1‐azaallyl Anion with Perfluoroalkene and Subsequent Intramolecular Skeletal Transformation of the Resulting Pentasubstituted Pyridines.
Authors: Suzuki Hiroyuki , Sakai Norio , Iwahara Ryohei , Fujiwaka Takayuki , Satoh Mitsunobu , Kakehi Akikazu , Konakahara Takeo
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Preparation of Functionalized Aryl‐ and Heteroarylpyridazines by Nickel‐Catalyzed Electrochemical Cross‐Coupling Reactions.
Authors: Sengmany Stephane , Leonel Eric , Polissaint Frantz , Nedelec Jean‐Yves , Pipelier Muriel , Thobie‐Gautier Christine , Dubreuil Didier
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mitsunobu Coupling of Nucleobases and Alcohols: An Efficient, Practical Synthesis for Novel Nonsugar Carbon Nucleosides.
Authors: Lu Weibing , Sengupta Sujata , Petersen Jeffrey L. , Akhmedov Novruz G. , Shi Xiaodong
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Design and Synthesis of p/m‐[p‐(un)Substituted Phenylsulfonamido]phenyl β‐Diketo Acids and Quinoxalone Derivatives.
Authors: Zeng Cheng‐Chu , Li Xue‐Mei , Yan Hong , Zhong Ru‐Gang
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enantioselective Hydrophosphonylation of Aldehydes Using an Aluminum Binaphthyl Schiff Base Complex as a Catalyst.
Authors: Ito Katsuji , Tsutsumi Hironori , Setoyama Masayuki , Saito Bunnai , Katsuki Tsutomu
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Diketobile Acids as New Hosts in Solid‐State Enantioselective Resolutions.
Authors: Fantin Giancarlo , Fogagnolo Marco , Perrone Daniela , Bortolini Olga
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Microwave‐Assisted, Zinc‐Mediated Peptide Coupling of N‐Benzyl‐α,α‐disubstituted Amino Acids.
Authors: Cianci Julia , Baell Jonathan B. , Harvey Andrew J.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Damipipecolin (I) and Damituricin (II), Novel Bioactive Bromopyrrole Alkaloids from the Mediterranean Sponge Axinella damicornis.
Authors: Aiello Anna , Fattorusso Ernesto , Giordano Antonella , Menna Marialuisa , Mueller Werner E. G. , Perovic‐Ottstadt Sanja , Schroeder Heinz C.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Soraphinol B, a New Acyloin Compound Produced by Sorangium cellulosum.
Authors: Ahn Jong‐Woong , Li XueMei , Zee Ok‐Pyo
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Spirodionic Acid, a Novel Metabolite from Streptomyces sp. Part 2. Total Synthesis Through a Twofold Michael Addition as a Selective Spiroanellation Strategy.
Authors: Siewert Juergen , Textor Adriana , Grond Stephanie , von Zezschwitz Paultheo
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Formal Stereoselective Synthesis of (‐)‐Maurenone.
Authors: Yadav J. S. , Ravindar K. , Reddy B. V. S.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthetic Studies on (‐)‐FR182877: Construction of the ABCD Ring System via Intramolecular Cycloadditions. Part 2.
Authors: Tanaka Natsumi , Suzuki Takahiro , Hosoya Yosuke , Nakada Masahisa
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of (.+‐.)‐Thiohalenaquinone by Iterative Metalations of Thiophene.
Authors: Wakefield Bryan , Halter Robert J. , Wipf Peter
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Two Model System of the α1A‐Adrenoceptor Docked with Selected Ligands.
Authors: Asher Wesley B. , Hoskins Samatha N. , Slasor Leslie A. , Morris Deanna H. , Cook Erika M. , Bautista Debra L.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High‐Performance Separation Membranes
Authors: Snyder Mark A. , Tsapatsis Michael
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Four‐Dimensional Space Groups for Pedestrians: Composite Structures
Authors: Sun Junliang , Lee Stephen , Lin Jianhua
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Dynamics of Spin Interactions in Diluted Magnetic Semiconductor Heterostructures
Authors: Yakovlev D. R.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Cystein Dioxygenase: Structure and Mechanism
Authors: Joseph Crisjoe A. , Maroney Michael J.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Counterion Strategy
Authors: Lacour Jerome , Linder David
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Cooperative Effect of Lewis Acids with Transition Metals for Organic Synthesis
Authors: Wang Congyang , Xi Zhenfeng
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Main Group Supramolecular Chemistry
Authors: Pitt Melanie A. , Johnson Darren W.
Published: November 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Bladder‐sparing, combined‐modality approach for muscle‐invasive bladder cancer
Authors: Perdonà Sisto , Autorino Riccardo , Damiano Rocco , De Sio Marco , Morrica Brunello , Gallo Luigi , Silvestro Giustino , Farella Antonio , De Placido Sabino , Di Lorenzo Giuseppe
Published: November 2007

BACKGROUND.

The authors evaluated their long‐term experience with combined‐modality, conservative treatment in patients with muscle‐invasive bladder cancer.

METHODS.

In total, 121 patients with T2, T3, or T4 bladder cancer (mean age, 63 years; ratio of men to women, 3:1) underwent induction by transurethral resection (TUR) of the tumor and received 2 cycles of neoadjuvant chemotherapy followed by radiotherapy (RT) (n = 43 patients) or radiochemotherapy (RCT) (n = 78 patients). Six weeks after RT or RCT, responses were evaluated by restaging TUR. Patients who achieved a complete response (CR) were observed at regular intervals. In patients who had persistent or recurrent invasive tumor, further treatment was recommended.

RESULTS.

Local response evaluation by restaging TUR was possible in 119 patients, and 102 of those patients (85.7%) achieved a CR. After a median follow‐up of 66 months (range, 6–182 months), no local or distant disease recurrences were observed in 67 of 102 complete responders (65.7%), 17 of 102 complete responders (16.7%) experienced superficial local disease recurrence, and 18 of 102 complete responders (17.6%) had a muscle‐invasive relapse. The 5‐year tumor‐specific, overall, and bladder‐intact survival rates were 73.5%, 67.7%, and 51.2%, respectively. Treatment modality, tumor classification, and resection status after initial TUR had an impact on survival rates (P = .04, P = .02, and P = .02, respectively).

CONCLUSIONS.

The current results indicated that conservative combined treatment is a reasonable alternative to radical cystectomy in selected patients with muscle‐invasive bladder cancer. Cancer 2008. © 2007 American Cancer Society.
Overcoming barriers to cancer clinical trial accrual
Authors: Umutyan Ari , Chiechi Christine , Beckett Laurel A. , Paterniti Debora A. , Turrell Corinne , Gandara David R. , Davis Sharon W. , Wun Ted , Chen Moon S. , Lara Primo N.
Published: November 2007

BACKGROUND.

Annually, only 3% of adult patients participate in cancer clinical trials (CCT). Accrual barriers include lack of CCT awareness and uncertain third‐party coverage. In 2002, a California law (SB37) required all insurers to reimburse costs related to CCT. The objective of the current study was to increase awareness of CCT and SB37 through a mass multimedia campaign (MMC) in the University of California (UC) Davis (UCD) Cancer Center catchment area. The authors assessed willingness to participate in and accrual to CCT.

METHODS.

Changes in CCT/SB37 awareness and willingness to participate were investigated before the MMC versus after the MMC and in UCD respondents versus UC San Diego (UCSD) catchment respondents—a control group that was not exposed to the MMC—by Pearson chi‐square and logistic regression analyses.

RESULTS.

Of 1081 post‐MMC respondents, 957 were from UCD, and 124 from UCSD. UCD respondents had a greater awareness of CCT (59% vs 65%; P < .01) and SB37 (17% vs 32%; P < .01) compared with UCSD respondents. Willingness to participate did not change in either cohort. Awareness level predicted willingness (odds ratio, 2.3; P < .01). Blacks, Asians, and lowest income (<$25 K per year) groups were the least willing to participate (P < .01, P < .04, and P < .02, respectively). The CCT accrual rate at UCD was unchanged.

CONCLUSIONS.

CCT and SB37 awareness increased significantly in the UCD cohort after the MMC. However, it was unclear whether this increase was attributable entirely to the MMC or to varying demographic variables. Enhancing patient willingness and accrual will require targeting other variables, such as physician or resource barriers, rather than just CCT and reimbursement awareness. Cancer 2008. © 2007 American Cancer Society.
Nucleation kinetics and growth aspects of organic nonlinear optical L‐arginine trifluoroacetate single crystals
Authors: Arjunan S. , Mohan Kumar R. , Mohan R. , Jayavel R.
Published: November 2007

Experimental determination of solubility, metastable zonewidth and induction period for an organic nonlinear optical (NLO) L‐arginine trifluoroacetate (LATF) crystal is reported. The interfacial tension for different supersaturation conditions has been estimated for the LATF solution at 45°C. Bulk crystal of dimensions 57x5x3 mm3 has been grown by temperature lowering technique using optimized growth parameters. Powder X‐ray diffraction and FTIR studies confirm the crystalline nature and the functional groups of the grown crystals respectively. Linear optical property of the grown crystal has been studied by UV‐Vis spectrum. Thermal analyses have revealed that the compound is thermally stable upto 212°C. Kurtz powder SHG test confirm the nonlinear optical properties of the as‐grown LATF crystal. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Structural characterization and magnetic properties of the spinel compound CoIn0.5Cr1.5S4
Authors: Delgado G. E. , Sagredo V. , Bolzoni F.
Published: November 2007

Single crystals of the magnetic semiconductor CoIn0.5Cr1.5S4, belong to the system CoIn(2‐2X)Cr(2X)S4 with x = 0.75, was grown by the chemical transport method. X‐ray powder diffraction characterization by the Rietveld method indicated that CoIn0.5Cr1.5S4 crystallizes in the space group Fd‐3m, Z = 8, with a = 10.0700(6) Å and V = 1021.2(1) Å3, in a normal spinel structure. The temperature dependence of the DC magnetization suggests that the studied compound presents a ferromagnetic behavior with a Curie temperature Tc = 220 K. Sharp spin‐glass like behavior was found also. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ACRT forced convection and its effects on solute segregation and heat and mass transfer during single crystal growth
Authors: Juncheng Liu
Published: November 2007

A numerical simulation study was carried out for CdZnTe vertical Bridgman method crystal growth with the accelerated crucible rotation technique (ACRT). The convection, heat and mass transfer in front of the solid‐liquid interface, and their effects on the solute segregation of the grown crystal can be characterized with the following. ACRT brings about a periodic forced convection in the melt, of which the intensity and the incidence are far above the ones of the natural convection without ACRT. This forced convection is of multiformity due to the changes of the ACRT parameters. It can result in the increases of both the solid‐liquid interface concavity and the temperature gradient of the melt in front of the solid‐liquid interface, of which magnitudes vary from a little to many times as the ACRT wave parameters change. It also enhances the mass transfer in the melt in a great deal, almost results in the complete uniformity of the solute distribution in the melt. With suitable wave parameters, ACRT forced convection decreases the radial solute segregation of the crystal in a great deal, even makes it disappear completely. However, it increases both the axial solute segregation and the radial one notably with bad wave parameters. An excellent single crystal could be gotten, of which the most part is with no segregation, by adjusting both the ACRT wave parameters and the crystal growth control parameters, e.g. the initial temperature of the melt, the temperature gradient, and the crucible withdrawal rate. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Synthesis, characterization and impedance spectroscopy of the new material [(CH3) (C6H5) 3P] 2CoBr4: a member of the A2BX4 family
Authors: Mostafa M. F. , Youssef A. A. , El Dean Th. Sh. , Mostafa A. M , Ahmed Farag I. S.
Published: November 2007

The crystal structure of bis‐(methyltriphenylphosphonium) tetrabromocobaltate (II), [(C19H18P)2 CoBr4] is determined: Mr = 933.203, monoclinic, P21, a = 9. 6977 (3) Å, b = 12.5547 (4)Å, c = 16.4503 (6)Å, β = 105.603 (2)°, V = 1929.04 (11)Å3, Z = 2, Dx = 1.607 Mg m‐3, T = 298 K. Differential thermal analysis at high temperatures shows three endothermic peaks characterizing four phases, with onset temperatures at T1= 313±2 K, T2 = 320±4 K and T3= 360±1 K. The structural instability detected via the temperature dependence of permittivity at T1 is ascribed to order‐disorder transition associated with cation dipole reorientation. Permittivity and ac conductivity studies as a function of temperature (295 K‐375 K) and frequency (0.11 kHz < f <100 kHz) are presented. The results indicate the importance of the cation size and shape on the phase transitions in the system. Bulk conductivity behavior is thermally activated. The associated activation energies are in the range 2.9 to 1.0 eV depending on the temperature regime. Two contributions to the ac conductivity, one dominating at low temperatures and high frequencies which are characterized by superlinear frequency exponent and the second dominates at high temperatures characterized by a sublinear frequency exponent. The behavior is interpreted in terms of the jump relaxation model. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Effect of surface tension‐driven flow on BaB2O4 crystal growth from high temperature melt‐solution
Authors: Pan Xiuhong , Jin Weiqing , Liu Yan , Ai Fei
Published: November 2007

The surface tension driven‐flow in BaB2O4 (BBO) melt‐solution is visualized by differential interference microscope coupled with Schlieren technique, and the streamline of the steady thermocapillary convection is found to be in form of an axially symmetric pattern. Based on the observation of BBO crystal rotation caused by the convective vortex, the widths of interfacial concentration, heat and momentum boundary layer are calculated. The effect of thermocapillary convection on boundary layer thickness is also investigated. Results show that the width of boundary layer decreases linearly with the increasing of dimensionless Marangoni number. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Crystal structure and thermal properties of a new double salt: K2SiF6·KNO3
Authors: Rissom C. , Schmidt H. , Voigt W.
Published: November 2007

A new double salt K2SiF6·KNO3 was found during determination of the solubility of K2SiF6 in aqueous potassium nitrate solutions. Unit cell parameters (P63/mmc, a = 5.6268(1) Å, c = 14.5186(6) Å, V = 398.09(2) Å3, Z = 2) and crystal structure have been determined. The compound is further characterized by RAMAN spectroscopy and X‐ray powder diffraction. Thermal properties were studied using DTA, DSC and in situ high‐ temperature X‐ray powder diffraction measurements. At 287 °C K2SiF6·KNO3 decomposes into its components KNO3 and K2SiF6 with an enthalpy of decomposition of about + 42 J·g‐1. Further thermal effects could be assigned to phase transformations of KNO3 whereby earlier literature data have been reconfirmed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)