bluuebunny/crossref_metadata_2025_split huggingface dataset:
Failure of the GORE HELEX atrial septal defect occluder to treat membranous VSDs in swine
Authors: Hagler Donald J. , Latson Larry A. , Goble Jake , Mathewson James W. , Cutright Warren 
Published: April 2010

AbstractObjective: We tested the suitability of the GORE HELEX septal occluder for closure of membranous ventricular septal defect in three Yucatan minipigs that had naturally‐occurring membranous ventricular septal defects. Methods: The animals were studied in the Gore Science Center Laboratory in Flagstaff, Arizona. In all of the device implantations, seating of the right disk along the right ventricular septum was problematic with resultant entanglement of one device in the chordae tendinae during attempted removal, implantation of one device onto the tricuspid valve papillary muscle and unlocking of one device occurring after implantation. Conclusions: A new occluder design appears to be needed to minimize the risk of disk entanglement with cardiac structures, particularly within the right ventricle. These studies did establish that the Yucatan mini swine are an acceptable and appropriate model for evaluating occluders intended for closure of membranous ventricular septal defects. © 2010 Wiley‐Liss, Inc.
Percutaneous coronary intervention of moderate to severe calcified coronary lesions: Insights from the National Heart, Lung, and Blood Institute Dynamic Registry
Authors: Bangalore Sripal , Vlachos Helen A. , Selzer Faith , Wilensky Robert L. , Kip Kevin E. , Williams David O. , Faxon David P. 
Published: May 2010

AbstractObjectives: To evaluate the efficacy and safety of drug eluting stents (DES) when compared with bare metal stents (BMS) in patients with moderate to severe calcified coronary lesions. Background: Calcified coronary lesions present unique technical challenges during percutaneous coronary intervention (PCI) and it is not known if DES are as safe and as effective in the presence of calcium, as randomized trials typically exclude this common patient subset. Methods: We evaluated patients with PCI of a single calcified lesion enrolled across five recruitment waves in the National Heart, Lung, and Blood Institute Dynamic Registry between 1997 and 2006. Patients were divided into two groups based on the stent type‐ BMS and DES. The primary efficacy outcome was the need for repeat revascularization at 1 year and the primary safety outcome was a composite of death and myocardial infarction at 1 year.
Results: Among the 1,537 patients included in the analysis, 884 (57%) underwent PCI with BMS and 653 (43%) with DES. DES use was associated with a significant reduction in the risk of repeat revascularization (10.0% vs. 15.3%; P = 0.003) with no significant higher risk of primary safety outcome (9.3% vs. 10.5%; P = 0.45) when compared to the BMS group. In a propensity score adjusted analysis, DES use was associated with a significantly lower risk in repeat revascularization (HR = 0.57; 95% CI 0.40–0.82; P = 0.002) and no significant difference in the risk of death and myocardial infarction (HR = 0.78; 95% CI 0.53–1.15; P = 0.20) compared to BMS group. Conclusion: In this large multicenter registry of patients with a moderate to severe calcified coronary lesion, use of DES compared to BMS was associated with significant reduction in the risk of repeat revascularization without any increase in death and myocardial infarction. © 2010 Wiley‐Liss, Inc.
Hairpin‐trap: A novel stent retrieval technique
Authors: Brilakis Emmanouil S. , Abdel‐karim Abdul‐rahman R. , Banerjee Subhash 
Published: May 2010

AbstractWe report a novel technique for retrieving lost stents or other equipment from the intravascular space. A hairpin is formed at the distal part of a 0.014 inch coronary guidewire, inserted through the Touhy valve, and used to “hook” the lost stent. The distal tip of the wire is then pulled back into the guiding catheter, where it is trapped by a balloon, forming a “hairpin‐trap.” The entire system is subsequently withdrawn. © 2010 Wiley‐Liss, Inc.
Adult stem cells in the treatment of acute myocardial infarction
Authors: Sharif Faisal , Bartunek Jozef , Vanderheyden Marc 
Published: May 2010

AbstractStem cell therapy has emerged as a novel therapeutic treatment alternative for early and end stage LV dysfunction. The rapid translation into clinical trials has left many questions unanswered. Moreover, results of randomized trials in the setting of acute myocardial infarction are controversial, emphasizing a need for further basic and translational research to improve understanding of cell functionality. This review attempts to summarize some of the functional issues related to cell therapy and also evaluate the current status of stem cell clinical trials. Although results to date have shown modest improvement in left ventricular function, the progress should follow a coordinated, multidisciplinary, and well designed path to address issues of cell homing, cell retention, and also look at outcomes beyond physiological parameters. © 2010 Wiley‐Liss, Inc.
Origin of Stability in Branched Alkanes
Authors: Kemnitz Carl R. , Mackey Joel L. , Loewen Mark J. , Hargrove Julie L. , Lewis Joshua L. , Hawkins Whitney E. , Nielsen Adam F. 
Published: April 2010

AbstractThe potential origins of stability in branched alkanes are investigated, paying close attention to two recent hypotheses: geminal steric repulsion and protobranching. All alkane isomers through C6H14 along with heptane and octane were investigated at the MPW1B95/6‐311++G(d,p) level. Their geminal steric repulsion, total steric repulsion, and orbital interactions were evaluated by using natural bond orbital analysis. All measures of steric repulsion fail to explain the stability of branched alkanes. The extra stability of branched alkanes and protobranching, in general, is tied to stabilizing geminal σ→σ* delocalization, particularly of the type that involves adjacent CC bonds and, thus, preferentially stabilizes branched alkanes. This picture is corroborated by valence bond calculations that attribute the effect to additional ionic structures (e.g., CH3+ :CH2 :CH3− and CH3:− CH2: CH3+ for propane) that are not possible without protobranching.
Cysteine‐Containing Polyisocyanides as Versatile Nanoplatforms for Chromophoric and Bioscaffolding
Authors: Le Gac Stéphane , Schwartz Erik , Koepf Matthieu , Cornelissen Jeroen J. L. M. , Rowan Alan E. , Nolte Roeland J. M. 
Published: April 2010

AbstractThe straightforward syntheses of polyisocyanides containing the alanine–cysteine motif in their side chains have been achieved. Detailed characterization of the polymers revealed a well‐defined and highly stable helical conformation of the polyimine backbone responsible for the formation of rodlike structures of over one hundred nanometers. The 41 helix is further stabilized by β‐sheet‐like interactions between the peptide arms. As a result, the cysteine sulfur atoms are regularly aligned along the polymer axis, which provides a unique platform for the scaffolding of various entities by using versatile click‐chemistry postmodification approaches. For instance, pyrene derivatives were introduced through thio‐specific reactions involving either maleimide, iodoacetamide, or thioester groups, leading to arrays of stacked chromophores with excimer‐like emission. A water‐soluble cysteine‐rich polyisocyanide was successfully biotinylated and coupled to streptavidin.
Brønsted Acid Assisted Regio‐ and Enantioselective Direct O‐Nitroso Aldol Reaction Catalysed by α,α‐Diphenylprolinol Trimethylsilyl Ether
Authors: Mielgo Antonia , Velilla Irene , Gómez‐Bengoa Enrique , Palomo Claudio 
Published: May 2010

AbstractIn the presence of p‐nitrobenzoic acid, the O‐nitroso aldol reaction of nitrosobenzene with enolisable aldehydes may be promoted by commercially available α,α‐diphenylprolinol trimethylsilyl ether. The reaction proceeds with good yields and essentially complete enantioselectivity, with catalyst loadings in the 5–10 mol % range. The resulting α‐oxyaldehyde adducts may be transformed in situ into α‐oxyimines, which provide 1,2‐amino alcohols upon treatment with Grignard reagents, in good overall yield (45–59 %) and with typical diastereomeric ratios ≥95:5.
Amide Synthesis from Alcohols and Amines Catalyzed by Ruthenium N‐Heterocyclic Carbene Complexes
Authors: Dam Johan Hygum , Osztrovszky Gyorgyi , Nordstrøm Lars Ulrik , Madsen Robert 
Published: May 2010

AbstractThe direct synthesis of amides from alcohols and amines is described with the simultaneous liberation of dihydrogen. The reaction does not require any stoichiometric additives or hydrogen acceptors and is catalyzed by ruthenium N‐heterocyclic carbene complexes. Three different catalyst systems are presented that all employ 1,3‐diisopropylimidazol‐2‐ylidene (IiPr) as the carbene ligand. In addition, potassium tert‐butoxide and a tricycloalkylphosphine are required for the amidation to proceed. In the first system, the active catalyst is generated in situ from [RuCl2(cod)] (cod=1,5‐cyclooctadiene), 1,3‐diisopropylimidazolium chloride, tricyclopentylphosphonium tetrafluoroborate, and base. The second system uses the complex [RuCl2(IiPr)(p‐cymene)] together with tricyclohexylphosphine and base, whereas the third system employs the Hoveyda–Grubbs 1st‐generation metathesis catalyst together with 1,3‐diisopropylimidazolium chloride and base. A range of different primary alcohols and amines have been coupled in the presence of the three catalyst systems to afford the corresponding amides in moderate to excellent yields. The best results are obtained with sterically unhindered alcohols and amines. The three catalyst systems do not show any significant differences in reactivity, which indicates that the same catalytically active species is operating. The reaction is believed to proceed by initial dehydrogenation of the primary alcohol to the aldehyde that stays coordinated to ruthenium and is not released into the reaction mixture. Addition of the amine forms the hemiaminal that undergoes dehydrogenation to the amide. A catalytic cycle is proposed with the {(IiPr)RuII} species as the catalytically active components.
ChemInform Abstract: Matrix Infrared Spectra and Electronic Structure Calculations of the First Actinide Borylene: FB=ThF2.
Authors: Wang Xuefeng , Roos Bjoern O. , Andrews Lester 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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 New Face of Rhodium Alloys: Revealing Ordered Structures from First Principles.
Authors: Levy Ohad , Chepulskii Roman V. , Hart Gus L. W. , Curtarolo Stefano 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Crystal Structure and Magnetic Properties of Sm3CuGeS7 and Sm3CuGeSe7.
Authors: Strok O. M. , Daszkiewicz M. , Gulay L. D. , Kaczorowski D. 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Olefin—Oxazolines (OlefOx): Highly Modular, Easily Tunable Ligands for Asymmetric Catalysis.
Authors: Hahn Bjoern T. , Tewes Friederike , Froehlich Roland , Glorius Frank 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Double Dehydro‐Diels—Alder Reactions of 1,5‐Dien‐3‐ynes.
Authors: Fallon Thomas , Robinson Diane E. J. E. , Willis Anthony C. , Paddon‐Row Michael N. , Sherburn Michael S. 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Regioselective Oxidation Cleavage of Benzylidene Acetals: Synthesis of α‐ and β‐Benzoyloxy Carboxylic Acids.
Authors: Kumar Ponminor Senthil , Banerjee Amit , Baskaran Sundarababu 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: An Expedient Three‐Component Synthesis of Tertiary Benzylamines.
Authors: Le Gall Erwan , Decompte Alexandre , Martens Thierry , Troupel Michel 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: A Practical Heterogeneous Catalyst for the Suzuki, Sonogashira, and Stille Coupling Reactions of Unreactive Aryl Chlorides.
Authors: Jin Myung‐Jong , Lee Dong‐Hwan 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: SN2′ versus SN2 Reactivity: Control of Regioselectivity in Conversions of Baylis—Hillman Adducts.
Authors: Baidya Mahiuddin , Remennikov Grygoriy Y. , Mayer Peter , Mayr Herbert 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Directed ortho‐ and meta‐Magnesiation or Zincation of Polyfunctional Aryl Nonaflates.
Authors: Monzon Gabriel , Knochel Paul 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: On the Scope of Trimethylaluminum‐Promoted 1,2‐Additions of ArZnX Reagents to Aldehydes.
Authors: Glynn Daniel , Shannon Jonathan , Woodward Simon 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Palladium‐Catalyzed Carbonylation/Acyl Migratory Insertion Sequence.
Authors: Zhang Zhenhua , Liu Yiyang , Gong Mingxing , Zhao Xiaokun , Zhang Yan , Wang Jianbo 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Catalyst‐Free Aminobromination of Alkenes with N‐Methyl‐p‐toluenesulfonamide as Nitrogen Resource.
Authors: Zhang Guangqian , An Guanghui , Zheng Jun , Pan Yi , Li Guigen 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Impregnated Copper on Magnetite: An Efficient and Green Catalyst for the Multicomponent Preparation of Propargylamines under Solvent‐Free Conditions.
Authors: Aliaga Maria J. , Ramon Diego J. , Yus Miguel 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Room Temperature C—H Activation and Cross‐Coupling of Aryl Ureas in Water.
Authors: Nishikata Takashi , Abela Alexander R. , Lipshutz Bruce H. 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Decarboxylative Cross‐Coupling of Aryl Tosylates with Aromatic Carboxylate Salts.
Authors: Goossen Lukas J. , Rodriguez Nuria , Lange Paul P. , Linder Christophe 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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 1,2‐Addition of Sb‐Phenyl‐1,5‐azastibocines to Functionalized Aldehydes.
Authors: Kakusawa Naoki , Yasuike Shuji , Kurita Jyoji 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: FeX3‐Promoted Intermolecular Addition of Benzylic Alcohols to Aromatic Alkynes: A Mild and Efficient Strategy for the Synthesis of Alkenyl Halides.
Authors: Ren Kai , Wang Min , Wang Lei 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Carbonyl Umpolung Reactivity of Enals: NHC‐Catalyzed Synthesis of Aldol Products via Epoxide Ring Opening.
Authors: Yadav Lal Dhar S. , Singh Santosh , Rai Vijai K. 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Diastereoselective Benzylic Arylation of Tetralins.
Authors: Davoust Marion , Kitching Jacki A. , Fleming Matthew J. , Lautens Mark 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Water in Amine‐Mediated Single Electron Tansfer Reaction of N‐Allylic Trichloroacetamides.
Authors: Taniguchi Tsuyoshi , Sasaki Masamichi , Ishibashi Hiroyuki 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Preparation of 2‐Sulfonyl‐1,2,3‐triazoles by Base‐Promoted 1,2‐Rearrangement of a Sulfonyl Group.
Authors: Yamauchi Motoshi , Miura Tomoya , Murakami Masahiro 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Highly Active Rhodium Catalyst with Electron‐Poor Diphosphine Enables Efficient Synthesis of Chiral 4‐Aryl‐δ‐lactones.
Authors: Korenaga Toshinobu , Maenishi Ryota , Osaki Kazutaka , Sakai Takashi 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Construction of Fused Thiophene Ring System via Intramolecular CH Arylation by Palladium Catalysis.
Authors: Mori Atsunori , Arai Nobumichi , Hatta Tomomi , Monguchi Daiki 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Synthesis of Functionalized Chromanes via a Formal [3 + 3]Cycloaddition of Allene Sulfonamides to Phenols.
Authors: Hashimoto Ken , Horino Yoshikazu , Kuroda Shigeyasu 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Copper‐Catalyzed Direct Alkenylation of N‐Iminopyridinium Ylides.
Authors: Mousseau James J. , Bull James A. , Charette Andre B. 
Published: April 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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.