bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Preparation and Synthetic Applications of 8‐Oxabicyclo[3.2.1]oct‐6‐en‐3‐one Derivatives
Authors: Favre Sylvain , Gerber‐Lemaire Sandrine , Vogel Pierre 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactions of Alkynes Using Heterogeneous and Homogeneous Cationic Gold Catalysts
Authors: Hutchings Graham J. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Immobilized Chiral Metal Catalysts for Enantioselective Hydrogenation of Ketones
Authors: Somanathan R. , Cortez N. A. , Parra‐Hake M. , Chavez D. , Aguirre G. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Emerging “Greener” Synthetic Routes to Hydrofluorocarbons: Metal Fluoride Mediated Oxyfluorination
Authors: Subramanian M. A. , Calvarese T. G. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Amino Acid Catalysis
Authors: Cordova Armando 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Diastereomerically Enriched α‐Lithiated Benzylsilanes
Authors: Schildbach D. , Bindl M. , Hoernig J. , Strohmann C. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Heterogeneous Enantioselective Hydrogenation on Metal Surface Modified by Chiral Molecules
Authors: Sugimura Takashi 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Catalytic Enantioselective Reduction Using Sodium Borohydride
Authors: Yamada Tohru 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nitrogen‐Containing Organofluorine Derivatives: An Overview
Authors: Fustero Santos , Sanz‐Cervera Juan F. , Acena Jose Luis , Sanchez‐Rosello Maria 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Alkenylation of Aromatic Compounds
Authors: Vasil'ev A. V. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthetic Routes Toward 2‐Substituted 2‐Imidazolines
Authors: Crouch R. David 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Rhodium‐Catalyzed Alkynylation of Alkynes, Allenes, and Conjugate Enones
Authors: Nishimura Takahiro 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Homogeneous Chemical Functionalization of the Mesoporous Silica Interior and the Utilization as the Polymerization Sites
Authors: Shibasaki Yuji , Kondo Junko N. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Biosynthesis of Polyketide‐Derived Polycyclic Ethers
Authors: Gallimore Andrew R. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Principles in NMR Spectroscopy
Authors: Diehl B. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Optical Chemical Sensors (Micro‐ and Nanosystems) for the Analysis of Liquids
Authors: Savvin S. B. , Kuznetzov V. V. , Sheremet'ev S. V. , Mikhailova A. V. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Characterization of Reactive Intermediates by Multinuclear Diffusion‐Ordered NMR Spectroscopy (DOSY)
Authors: Li Deyu , Keresztes Ivan , Hopson Russell , Williard Paul G. 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Enantioselective Crystallization on Nanochiral Surfaces
Authors: Mastai Yitzhak 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Chromatographic Separation of Enantiomers Through Nanoscale Design
Authors: Sancho Raquel , Minguillon Cristina 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Magnetic Microbead‐Based Electrochemical Immunoassays
Authors: Kuramitz Hideki 
Published: May 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Coronary Flow Slows as Renal Function Worsens
Authors: Yilmaz Mehmet Birhan , Yalta Kenan 
Published: May 2009

AbstractBackgroundSlow coronary flow in patients without obstructive coronary artery disease is an angiographic finding that could easily be detected by thrombolysis in myocardial infarction (TIMI) frame counts. On the other hand, impaired renal function is a frequent problem. We searched the association between the 2 entities.HypothesisWe evaluated the impact of impaired renal function on slow coronary flow.MethodsIn this study, 105 patients with normal coronary arteries and impaired renal function in the form of a calculated glomerular filtration rate (GFR) < 90 mL/min/1.73 m2 were enrolled and compared with 102 age‐ and sex‐matched controls who had normal a GFR.ResultsCalculated GFR was found to be negatively correlated with TIMI frame count in LAD (r = − 0.579, p < 0.001), in CX (r = − 0.499, p < 0.001), and in RCA (r = − 0.491, p < 0.001) in patients with impaired renal function. After adjusting for systolic and diastolic blood pressure and high‐density lipoprotein (HDL) cholesterol, multiple regression analysis demonstrated a statistically significant and independent relationship between TIMI frame count for 3 vessels and calculated GFR.ConclusionsImpaired renal function seems to denote slower coronary flow in patients with normal coronary arteries compared with those with normal renal function, and there seems to be an independent association between GFR and TIMI frame count in those with impaired renal function. Copyright © 2009 Wiley Periodicals, Inc.
Regulation of cellular contractile force in response to mechanical stretch by diphosphorylation of myosin regulatory light chain via RhoA signaling cascade
Authors: Mizutani Takeomi , Kawabata Kazushige , Koyama Yoshikazu , Takahashi Masayuki , Haga Hisashi 
Published: May 2009

AbstractFibroblasts regulate their contractile force in response to external stretch; however, the detailed mechanism by which the force is regulated is unclear. Here, we show that diphosphorylation and dephosphorylation of myosin regulatory light chain (MRLC) are involved in the stretch‐induced force response. Cellular stiffness, which reflects the cellular contractile force, under external stretch was measured by mechanical‐scanning probe microscopy. Fibroblasts (NIH‐3T3) expressing green fluorescent protein (GFP)‐tagged mutant‐type MRLC (MRLCT18A‐GFP), which cannot be diphosphorylated, did not show any stretch‐induced stiffness response, whereas the stiffness in cells expressing GFP‐tagged wild‐type MRLC (MRLCWT‐GFP) increased immediately after the stretch and subsequently decreased after 1–2 h. Urea‐PAGE western blot analysis showed that the proportion of diphosphorylated MRLC (PP‐MRLC) transiently increased after the stretch and decreased after 1–2 h. Dominant‐negative RhoA (RhoAN19)‐expressing cells did not show the stiffness response to the stretch, whereas wild‐type RhoA‐expressing cells did. It was concluded that the cellular force response originates in the stretch‐induced diphosphorylation and dephosphorylation of MRLC and is regulated via the RhoA signaling cascade Cell Motil. Cytoskeleton 66: 389–397, 2009. © 2009 Wiley‐Liss, Inc.
Optimizing multiple conjugate gradient solvers for large‐scale systems
Authors: Sancho Jose Carlos , Kerbyson Darren J. 
Published: May 2009

AbstractConjugate gradient (CG) solvers are the most time consuming part of many scientific applications. These solvers exhibit communication operations that can prevent high performance from being achieved on large‐scale systems. In this paper we present a novel technique to boost the performance of these solvers. In this, multiple independent solvers, which occur in some applications, are combined allowing for the overlapping of communication with other communication and computation, resulting with increased performance. This is the first work where a combination of CG solvers has been exploited and offers performance improvements, which may be particularly important in very large‐scale systems. Results are presented for the MIMD lattice computation (MILC) application that show the cost of collective communications can be reduced by a factor of up to 2.5×. Moreover the performance of MILC is significantly improved, by over 10% for typical lattice sizes on a 1024‐processor system, and by 15% on a 4096‐processor system. Larger improvements are expected on larger systems. Copyright © 2009 John Wiley & Sons, Ltd.
Glucose abnormalities in non‐alcoholic fatty liver disease and chronic hepatitis C virus infection: the role of iron overload
Authors: Lecube Albert , Hernández Cristina , Simó Rafael 
Published: May 2009

AbstractNon‐alcoholic fatty liver disease (NAFLD) and chronic hepatitis C virus (HCV) infection are major causes of liver disease frequently described in outpatient patients with glucose abnormalities. Hyperferritinemia, which suggests that iron overload plays a decisive role in the pathophysiology of insulin resistance and hyperglycemia, is a common finding in both disorders. However, the role of the hepatic iron deposition differs from one to the other. In NAFLD, a moderate liver iron accumulation has been observed and molecular mechanisms, including the downregulation of the liver iron exporter ferroportin‐1, have been described. Iron overload will enhance intrahepatic oxidative stress that promotes hepatic fibrosis, interfere with insulin signalling at various levels and may hamper hepatic insulin extraction. Therefore, liver fibrosis, hyperglycemia and hyperinsulinemia will lead to increased levels of insulin resistance and the development of glucose abnormalities. Furthermore, iron depletion by phlebotomy removes liver iron content and reduces serum glucose and insulin resistance in NAFLD patients. Therefore, it seems that iron overload participates in those glucose abnormalities associated with NAFLD. Concerning chronic HCV infection, it has been classically assumed that iron overload contributes to insulin resistance associated with virus infection. However, recent evidence argues against the presence of iron overload in these patients and points to inflammation associated with diabetes as the main contributor to the elevated ferritin levels. Therefore, glucose abnormalities, and specially type 2 diabetes, should be taken into account when evaluating serum ferritin levels in patients with HCV infection. Copyright © 2009 John Wiley & Sons, Ltd.
Syntheses, Crystal Structures and Adsorption Properties of Ultramicroporous Coordination Polymers Constructed from Hexafluorosilicate Ions and Pyrazine (Eur. J. Inorg. Chem. 16/2009)
Authors: Uemura Kazuhiro , Maeda Akihisa , Maji Tapas Kumar , Kanoo Prakash , Kita Hidetoshi 
Published: May 2009

AbstractThe cover picture The cover picture shows two crystal structures of porous coordination polymers, [Cu(SiF6)(4,4′bpy)2]n and [Zn(SiF6)(pyz)2]n (4,4′‐bpy = 4,4′‐bipyridine, pyz = pyrazine), which have been generated from square‐grid coordination polymers that are cross‐linked by ν‐SiF6 anions. Although typical bridging ligands such as 4,4′‐bpy and 1,4‐benzenedicarboxylate produce open octahedral coordination polymers with micropores, such micropores need to be further narrowed to become ultramicropores (< 7 Å) for separation and purification of smaller gas molecules. We have succeeded in obtaining the ultramicroporous coordination polymer [Zn(SiF6)(pyz)2]n with 4.5 ± 4.5 Å2 pores by simply replacing 4,4′‐bpy in [M(SiF6)(4,4′‐bpy)2]n (M = Zn2+, Cu2+) with pyz. The ultramicropores of [Zn(SiF6)(pyz)2]n adsorb Me2CO rather than iPrOH, showing the size‐exclusive effect. Additionally this compound shows a sharp uptake in H2 adsorption at 77 K, because the interaction potential is expected to be strong as a result of the synergistic effect of the neighbouring pore walls. Details are discussed in the article by K. Uemura et al. on p. 2329 ff.
Gold(I) Catalysis: Selective Synthesis of Six‐ or Seven‐Membered Heterocycles from Epoxy Alkynes
Authors: Dai Lun‐Zhi , Shi Min 
Published: May 2009

AbstractGold(I)‐catalyzed intramolecular cycloisomerization of ketone‐substituted epoxides with alkynes to six‐ or seven‐membered heterocyclic compounds is firstly introduced in this paper. This procedure involves a cascade isomerization of the ketone‐substituted epoxides into 1,3‐diketones in the presence of a Lewis acid and subsequent gold(I)‐catalyzed selective intramolecular addition of an oxygen or a carbon nucleophile to the alkynes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Short Access to the Aromadendrane Family: Highly Efficient Stereocontrolled Total Synthesis of (±)‐Cyclocolorenone and (±)‐α‐Gurjunene
Authors: Calancea Mihaela , Carret Sébastien , Deprés Jean‐Pierre 
Published: May 2009

Abstract(±)‐Cyclocolorenone (2), an aromadendrane, was prepared stereoselectively in seven steps in 10.8–12.5 % overall yield from the commercially available tropylium cation via key intermediate 6, which was used as a general and efficient precursor to bicyclo[5.3.0]decane sesquiterpenes. (±)‐α‐Gurjunene (3) was obtained through the efficient deoxygenation of (±)‐2, constituting therefore the first total synthesis of this natural product in eight steps from the tropylium cation. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Alkyne Hydroarylations with Chelating Dicarbene Palladium(II) Complex Catalysts: Improved and Unexpected Reactivity Patterns Disclosed Upon Additive Screening
Authors: Biffis Andrea , Gazzola Luca , Gobbo Pierangelo , Buscemi Gabriella , Tubaro Cristina , Basato Marino 
Published: May 2009

AbstractPalladium(II) complexes with a ligand set made from a chelating N‐heterocyclic dicarbene ligand and two weakly coordinating anions (generally introduced in situ upon addition of 2 equiv. of a suitable silver salt) were found to be very active and selective catalysts for the room‐temperature hydroarylation of alkynes at low catalyst loading (0.1 mol‐%). Moreover, the screening of various strong acids as reaction promoters revealed that both the strength of the acid and the coordinating ability of its conjugated base influence the catalytic performance. Most remarkably, the use of HBF4 together with a dicarbene Pd complex catalyst provides a dramatic change in the selectivity of the reaction, with the prevalent formation of a product stemming from the insertion of two molecules of alkyne into the aromatic C–H bond. The results presented herein highlight the fact that the dicarbene ligand, apart from stabilising the catalyst, is also able to enhance catalytic activity and, most notably, to steer the reaction selectivity towards novel products. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
The links between the categorised Southern Oscillation indicators and climate and hydrologic variables in Turkey
Authors: Karabörk M. Çaǧatay , Kahya Ercan 
Published: May 2009

AbstractSome previous global and regional studies have indicated teleconnection between the extreme phases of the Southern Oscillation (SO) and Turkish climate and hydrologic variables; however, they failed to suggest a strong correlation structure. In this study, categorised Southern Oscillation index (SOI) and Multivariate ENSO (El Nino Southern Oscillation) index (MEI) series were used to examine the far‐reaching effects of the SO on temperature, precipitation and streamflow patterns in Turkey. These SO indicators were categorised into five subgroups according to their empirical distributions. Correlations between the categorised SO indicators and three analysis variables were computed using the Spearman's rho from lag‐0 to lag‐4. Significance of calculated correlations was tested at the 0·01 level for station‐based analysis and at the 0·05 level for regional analysis. Temperature records demonstrated significant correlations with the categorised SOI and MEI in nearly half of the entire stations. For some categories, precipitation and streamflow were found to be correlated with the SO indicators in some stations mainly in western Turkey. Regional analyses of temperature and precipitation revealed a clear and strong correlation structure with the categorised SO indicators on a large portion of Turkey. This was not concluded by the earlier pertinent studies. Besides, this study showed that significant correlations were obtained not only for the SO extreme phases (namely, El Nino and La Nina) but also for neutral and moderate phases of the SO. Plausible explanations for the observed teleconnection are presented. Copyright © 2009 John Wiley & Sons, Ltd.
Silver ion‐induced suicidal erythrocyte death
Authors: Sopjani Mentor , Föller Michael , Haendeler Judith , Götz Friedrich , Lang Florian 
Published: May 2009

AbstractOwing to its antibiotic activity, silver is used for water purification, wound care and a wide variety of implants. Silver metal and silver compounds ionize in solution, and silver ions interfere with the function of a wide variety of proteins. In mammalian cells, silver ions may trigger apoptosis by stimulation of cytochrome c release from mitochondria. The present study explored the effect of AgNO3 on eryptosis, the suicidal death of erythrocytes, cells devoid of mitochondria. Similar to apoptosis of nucleated cells, eryptosis is characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine exposure at the cell surface. Eryptosis is triggered by energy depletion, cellular depletion of nitric oxide (NO) and activation of protein kinase C (PKC). Phosphatidylserine exposure was determined by annexin V‐binding, cell volume by forward scatter, cellular ATP by a luciferin–luciferase assay kit, and hemolysis by photometry. A 48 h exposure to AgNO3 (≥100 nm) but not to NaNO3 significantly enhanced the percentage of annexin V‐binding cells, slightly but significantly decreased forward scatter and significantly decreased cytosolic ATP. Furthermore, inhibition of PKC by staurosporine and donation of NO by sodium nitroprusside significantly blunted silver‐induced eryptosis. In conclusion, AgNO3 triggers cell membrane scrambling, an effect attributed to ATP depletion, PKC activation and decrease of cellular NO. Copyright © 2009 John Wiley & Sons, Ltd.