bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Organocatalytic Asymmetric Michael Addition of 3‐Substituted Oxindoles to α,β‐Unsaturated Acyl Phosphonates for the Synthesis of 3,3′‐Disubstituted Oxindoles with Chiral Squaramides.
Authors: Chen Lin , You Yong , Zhang Ming‐Liang , Zhao Jian‐qiang , Zuo Jian , Zhang Xiao‐Mei , Yuan Wei‐Cheng , Xu Xiao‐Ying 
Published: August 2015

AbstractA broad range of complex 3,3′‐disubstituted oxindoles bearing two stereogenic centers are obtained in high yields and with high to excellent diastereo‐ and enantioselectivities.
ChemInform Abstract: An Efficient Approach to 1,2,3‐Trisubstituted Indole via Rhodium Catalyzed Carbene C(sp3)—H Bond Insertion.
Authors: Shen Mei‐Hua , Pan Ying‐Peng , Jia Zhi‐Hong , Ren Xin‐Tao , Zhang Ping , Xu Hua‐Dong 
Published: August 2015

AbstractThe method allows the preparation of various highly functionalized indolyl aldehydes.
ChemInform Abstract: A New and Convenient Synthetic Way to 2‐Substituted Thieno[2,3‐b]indoles.
Authors: Irgashev Roman A , Karmatsky Arseny A , Rusinov Gennady L , Charushin Valery N 
Published: August 2015

AbstractThe title indoles are obtained by a short two‐step procedure including the “aldol‐crotonic” type condensation of easily available 1‐alkylisatins and acetylated (hetero)arenes, followed by treatment of the 3‐alkylated isatins with Lawesson reagent.
ChemInform Abstract: Synthesis of Optically Active Polycyclic N‐Heterocycles Derived from l‐Prolinamine.
Authors: Wroblewska Aneta , Mloston Grzegorz , Heimgartner Heinz 
Published: August 2015

AbstractThe treatment of N‐oxides (V) with Ac2O leads to tricyclic products (VI), whilst the sulfur‐transfer reaction is used for the preparation of imidazole‐2‐thione by treatment of N‐oxide (Va) with 2,2,4,4‐tetramethylcyclobutane‐1,3‐dithione.
ChemInform Abstract: Direct Catalytic Enantio‐ and Diastereoselective Ketone Aldol Reactions of Isocyanoacetates.
Authors: de la Campa Raquel , Ortin Irene , Dixon Darren J. 
Published: August 2015

AbstractA diastereo‐ and enantioselective aldol/cyclization reaction of isocyanate esters with unactivated ketones to yield functionalized oxazolines is developed.
ChemInform Abstract: Catalytic Asymmetric Hydrogenation of Quinoline Carbocycles: Unusual Chemoselectivity in the Hydrogenation of Quinolines.
Authors: Kuwano Ryoichi , Ikeda Ryuhei , Hirasada Kazuki 
Published: August 2015

AbstractThe Ru‐catalyzed hydrogenation of 8‐substituted quinolines leads to chiral 5,6,7,8‐tetrahydroquinolines as main or sole products.
ChemInform Abstract: A Novel and Efficient Synthesis of Diamino Derivatives of Pyrano[3,4‐c]pyridines.
Authors: Paronikyan Ervand G. , Dashyan Shushanik Sh. , Noravyan Azat S. , Tamazyan Rafael A. , Ayvazyan Armen G. , Panosyan Henrik A. 
Published: August 2015

AbstractThe reaction of pyridinium salts (V) with excess of amines (VI) proceeds with a recyclization leading to the title compounds (VII).
ChemInform Abstract: Access to New Endoperoxide Derivatives by Electrochemical Oxidation of Substituted 3‐Azabicyclo[4.1.0]hept‐4‐enes.
Authors: Nuter Frederick , Dime Abdou Khadre Djily , Chen Cheng , Bounaadja Lotfi , Mouray Elisabeth , Florent Isabelle , Six Yvan , Buriez Olivier , Marinetti Angela , Voituriez Arnaud 
Published: August 2015

AbstractCycloisomerization of substrates (I) or (V) in the presence of either a gold or a platinum catalyst leads to formation of fused pyridines such as (II) or (VI).
ChemInform Abstract: An I2‐Catalyzed Oxidative Cyclization for the Synthesis of Indolizines from Aromatic/Aliphatic Olefins and α‐Picoline Derivatives.
Authors: Xiang Likui , Zhang Fuming , Chen Baohua , Pang Xiaobo , Yang Xiaodong , Huang Guosheng , Yan Rulong 
Published: August 2015

AbstractThe reaction tolerates a broad range of olefins endowed with an aromatic or hetaromatic substituent providing the indolizine products in moderate to high yields.
ChemInform Abstract: Synthesis of 1,2‐Dihydro‐1‐oxophthalazin‐4‐yl Trifluoromethanesulfonate and Its Application in the Synthesis of 4‐(Aryl/heteroaryl/alkynyl)phthalazin‐1(2H)‐one
Authors: Dhage Ganesh Raosaheb , Deshmukh Santosh Rangnath , Thopate Shankar Ramchandra 
Published: August 2015

Abstractvia Suzuki and Sonogashira coupling reactions
ChemInform Abstract: Enantioselective 1,1‐Arylborylation of Alkenes: Merging Chiral Anion Phase Transfer with Pd Catalysis.
Authors: Nelson Hosea M. , Williams Brett D. , Miro Javier , Toste F. Dean 
Published: August 2015

AbstractA Pd‐catalyzed three‐component reaction of aryldiazonium tetrafluoroborates with a variety of mono‐substituted alkenes and (Bpin)2 is reported which allows the direct preparation of functionalized benzylic boronates.
ChemInform Abstract: Iridium‐Catalyzed ortho‐Selective C—H Silylation of Aromatic Compounds Directed Toward the Synthesis of π‐Conjugated Molecules with Lewis Acid—Base Interaction.
Authors: Wakaki Takayuki , Kanai Motomu , Kuninobu Yoichiro 
Published: August 2015

AbstractThe reaction exhibits a wide substrate scope, and a variety of π‐conjugated molecules is synthesized in high yields, even in gram scale.
ChemInform Abstract: Design, Synthesis, in vitro Antimicrobial and Cytotoxic Evaluation of Novel 1,2,3‐Selena/Thiadiazolyltetrazole Derivatives.
Authors: Kanakaraju S. , Suresh L. 
Published: August 2015

AbstractCompounds (IIb,c) exhibit interesting antimalarial activity whereas compounds (IIIa,b) show appreciable cytotoxicity.
ChemInform Abstract: Cu(ClO4)2·6H2O Catalyzed Solvent Free Per‐O‐Acetylation and Sequential One‐Pot Conversions of Sugars to Thioglycosides.
Authors: Chatterjee Debnath , Paul Abhijit , Rajkarnal Rajkarnal , Yadav Somnath 
Published: August 2015

AbstractPeracetates of reducing and non‐reducing carbohydrates are prepared.
ChemInform Abstract: A Prenylated Acridone Alkaloid and Ferulate Xanthone from Barks of Citrus medica (Rutaceae).
Authors: Fomani Marie , Happi Emmanuel Ngeufa , Kouam Kouam , Francois‐Huges Poree , Lallemand Marie‐Christine , Kamdem Waffo Alain Francois , Wansi Jean Duplex 
Published: August 2015

AbstractA new prenylated acridone alkaloid medicacridone (I) and a new ferulate xanthone, medicaxanthone (II) are isolated along with 11 known compounds from the methanol extract of the bark of Citrus medica. Some of the compounds show weak cytotoxic activity against the human Caucasian prostate adenocarcinoma cell line PC‐3.
ChemInform Abstract: Sweriyunnanlactone A, One Unusual Secoiridoid Trimer from Swertia yunnanensis.
Authors: Geng Chang‐An , Chen Xing‐Long , Huang Xiao‐Yan , Ma Yun‐Bao , He Kang , Zhou Ning‐Jia , Cao Tuan‐Wu , Zhang Xue‐Mei , Chen Ji‐Jun 
Published: August 2015

AbstractThe compound exhibits inhibition on HBV DNA replication on HepG 2.2.15 cell line (IC50=60.76 μM).
ChemInform Abstract: Biomimetic Total Synthesis of Santalin Y.
Authors: Strych Sebastian , Journot Guillaume , Pemberton Ryan P. , Wang Selina C. , Tantillo Dean J. , Trauner Dirk 
Published: August 2015

AbstractThe focus is on the final synthetic step, the reaction between the key intermediates (I) and (II) yielding santalin Y (III).
ChemInform Abstract: Unusual Concentration Induced Antithermal Quenching of the Bi2+ Emission from Sr2P2O7:Bi2+.
Authors: Li Liyi , Peng Mingying , Viana Bruno , Wang Jing , Lei Bingfu , Liu Yingliang , Zhang Qinyuan , Qiu Jianrong 
Published: August 2015

AbstractUnusual concentration induced antithermal quenching of divalent bismuth ions occurs in heavily Bi2+‐doped Sr2P2O7 phosphors along with a blueshift of the emission peak at higher temperature.
ChemInform Abstract: Emerging Approaches for the Synthesis of Triazoles: Beyond Metal‐Catalyzed and Strain‐Promoted Azide—Alkyne Cycloaddition
Authors: Lima Carolina G. S. , Ali Akbar , van Berkel Sander S. , Westermann Bernhard , Paixao Marcio W. 
Published: August 2015

AbstractReview: [40 refs.
ChemInform Abstract: Fused 1,4‐Benzothiazine Ring Systems from O‐Aminothiophenol and Its Derivatives as Versatile Synthons
Authors: Chandrasekhar Batchu 
Published: August 2015

AbstractReview: synthesis of various 1,4‐benzothiazine derivatives and their potential to deveop better chemotherapeutic agents; 134 refs.
ChemInform Abstract: Single‐Crystal Organic Field‐Effect Transistors of Naphthodifurans
Authors: Mitsui Chikahiko , Soeda Junshi , Miwa Kazumoto , Shoyama Kazutaka , Ota Yoshinori , Tsuji Hayato , Takeya Jun , Nakamura Eiichi 
Published: August 2015

AbstractReview: [23 refs.
Stereolability of Chiral Ruthenium Catalysts With Frozen NHC Ligand Conformations Investigated by Dynamic‐HPLC
Authors: Menta Sergio , Pierini Marco , Cirilli Roberto , Grisi Fabia , Perfetto Alessandra , Ciogli Alessia 
Published: August 2015

AbstractThe stereolability of chiral Hoveyda–Grubbs II type ruthenium complexes bearing N‐heterocyclic carbene (NHC) ligands with Syn‐phenyl groups on the backbone and Syn‐ or Anti‐oriented o‐tolyl N‐substituents was studied by resorting to dynamic high‐performance liquid chromatography (D‐HPLC). A complete chromatographic picture of the involved stereoisomers (four for Anti‐ and two for Syn‐complexes) was achieved at very low temperatures (−53°C and −40°C respectively), at which the NHC‐Ru bond rotations were frozen out. Inspection of the chromatographic profiles recorded at higher temperatures revealed the presence of plateau zones between the couples of either Syn or Anti stereoisomers, attesting to the active interconversion between the eluted species. Such dynamic chromatograms were successfully simulated through procedures based on both theoretical plate and classical stochastic models. The good superimposition achieved between experimental and simulated chromatographic profiles allowed determination of the related isomerization energy barriers (ΔGisom#), all derived by rotation around the NHC‐Ru bond. The obtained diastereomerization barriers between the Anti isomers were found in very good agreement with those previously measured by experimental nuclear magnetic resonance (NMR) and assessed through Density Functional Theory (DFT) calculations. With the same approach, for the first time we also determined the enantiomerization barrier of the Syn isomer. Focused changes to the structure of complex Syn, studied by a molecular modeling approach, were found suitable to strongly reduce the stereolability arising from rotation around the NHC‐Ru bond. Chirality 27:685–692, 2015. © 2015 Wiley Periodicals, Inc.
Sicherheitstechnische Aspekte bei Planung und Bau modularer Produktionsanlagen
Authors: Fleischer Christoph , Wittmann Juri , Kockmann Norbert , Bieringer Thomas , Bramsiepe Christian 
Published: August 2015

AbstractDie Entwicklung und der Einsatz von modulbasierten Produktionsanlagen wird als Strategie angesehen, um auf wachsende Anforderungen an den weltweiten Chemiemarkt reagieren zu können. Bei den neuen Anlagentypen handelt es sich wie bei klassischen Anlagen um ein Arbeitsmittel, das vor dem Gebrauch hinsichtlich der sicheren Benutzung geprüft werden muss. Daher müssen Risikoanalysemethoden identifiziert und effizient angewendet werden, die einen sicheren Betrieb gewährleisten. Anhand von intra‐ und intermodularen Sicherheitsbetrachtungen, der Anwendung einer Moduldatenbank sowie der Kategorisierung von Modulen in Betriebsfensterklassen kann der erforderliche Aufwand hin zur sicheren Produktionsanlage reduziert werden.
Neue Produktionskonzepte für die Prozessindustrie erfordern modularisierte Logistiklösungen
Authors: Kessler Stephan , Brüll Ludger 
Published: August 2015

AbstractNeuartige Produktionskonzepte für chemische und verfahrenstechnische Herstellungsprozesse rücken verstärkt in den Fokus der Industrie. Hier werden die wichtigsten Anforderungen an logistische Assets, Steuerungs‐ und Planungsprozesse sowie Mitarbeiter dargestellt, die zu bearbeiten sind, um die Vorteile der Modularisierung in der Prozessindustrie nutzbar zu machen. Dabei ist zu berücksichtigen, dass das dargestellte Forschungsprogramm keinen Anspruch auf Vollständigkeit erhebt. Gespräche mit Verantwortlichen in der Supply Chain und Logistik der Prozessindustrie haben die Bedeutung der dargestellten Forschungsaufgaben jedoch bestätigt. Weitere Themen (z. B. in Bezug auf Geschäftsmodelle und IT‐Integration) können bei Bedarf ergänzt werden.
Benefit of Anticoagulation Therapy in Hyperthyroidism‐Related Atrial Fibrillation
Authors: Chan Pak‐Hei , Hai Jojo , Yeung Chun‐Yip , Lip Gregory Y.H. , Lam Karen Siu‐Ling , Tse Hung‐Fat , Siu Chung‐Wah 
Published: August 2015

ABSTRACTBackgroundExisting data on the risk of ischemic stroke in hyperthyroidism‐related atrial fibrillation (AF) and the impact of long‐term anticoagulation in these patients, particularly those with self‐limiting AF, remain inconclusive.HypothesisRisk of stroke in hyperthyroidism‐related AF is the same as nonhyperthyroid counterparts.MethodsThis was a single‐center observational study of 9727 Chinese patients with nonvalvular AF from July 1997 to December 2011. Patients with AF diagnosed concomitantly with hyperthyroidism were identified. Primary and secondary endpoints were defined as hospitalization with ischemic stroke and intracranial hemorrhage in the first 2 years. Patient characteristics, duration of AF, and choice of antithrombotic therapy were recorded. Self‐limiting AF was defined as <7 days' duration.ResultsOut of 9727 patients, 642 (6.6%) had concomitant hyperthyroidism and AF at diagnosis. For stroke prevention, 136 and 243 patients (21.1% and 37.9%) were prescribed warfarin and aspirin, respectively, whereas the remaining patients (41.0%) received no therapy. Ischemic stroke occurred in 50 patients (7.8%), and no patient developed hemorrhagic stroke. Patients with CHA2DS2‐VASc of 0 did not develop stroke. Warfarin effectively reduced the incidence of stroke compared with aspirin or no therapy in patients with CHA2DS2‐VASc ≥1 and non–self‐limiting AF, but not in those with self‐limiting AF or CHA2DS2‐VASc of 0. Presence of hyperthyroidism did not confer additional risk of ischemic stroke compared with nonhyperthyroid AF.ConclusionsPatients with hyperthyroidism‐related AF are at high risk of stroke (3.9% per year). Warfarin confers stroke prevention in patients with CHA2DS2‐VASc ≥1 and non–self‐limiting AF. Overall stroke risk was lower in hyperthyroid non–self‐limiting AF patients compared with nonhyperthyroid counterparts.
PDE constrained optimization of electrical defibrillation in a 3D ventricular slice geometry
Authors: Chamakuri Nagaiah , Kunisch Karl , Plank Gernot 
Published: August 2015

SummaryA computational study of an optimal control approach for cardiac defibrillation in a 3D geometry is presented. The cardiac bioelectric activity at the tissue and bath volumes is modeled by the bidomain model equations. The model includes intramural fiber rotation, axially symmetric around the fiber direction, and anisotropic conductivity coefficients, which are extracted from a histological image. The dynamics of the ionic currents are based on the regularized Mitchell–Schaeffer model. The controls enter in the form of electrodes, which are placed at the boundary of the bath volume with the goal of dampening undesired arrhythmias. The numerical optimization is based on Newton techniques. We demonstrated the parallel architecture environment for the computation of potentials on multidomains and for the higher order optimization techniques. Copyright © 2015 John Wiley & Sons, Ltd.
Effect of 3 Single‐Dose Regimens of Opicapone on Levodopa Pharmacokinetics, Catechol‐O‐Methyltransferase Activity and Motor Response in Patients With Parkinson Disease
Authors: Rocha José‐Francisco , Ferreira Joaquim J. , Falcão Amílcar , Santos Ana , Pinto Roberto , Nunes Teresa , Almeida Luis , Soares‐da‐Silva Patrício 
Published: August 2015

AbstractThis study determined the effects of single doses of opicapone (OPC), a novel third‐generation catechol‐O‐methyltransferase (COMT) inhibitor, on levodopa and 3‐O‐methyl‐levodopa (3‐OMD) pharmacokinetics (PK), COMT activity and motor fluctuations in patients with Parkinson disease (PD). Subjects received, in a double‐blind manner, 25, 50, and 100 mg OPC or placebo (PLC) in 4 separate treatment periods. The washout period between doses was at least 10 days. During each period, the OPC/PLC capsules were to be coadministered with the morning dose of 100/25 mg levodopa/carbidopa (LC) or levodopa/benserazide (LB) on day 3. In relation to PLC, levodopa exposure increased 3.7%, 16.4%, and 34.8% following 25, 50, or 100 mg OPC, respectively. Maximum S‐COMT inhibition (Emax) ranged from 67.8% (25 mg OPC) to 100% (100 mg OPC). Peak and extent of S‐COMT inhibition were dose‐dependent. Maximum decrease in the plasma 3‐OMD was observed following administration of 100 mg OPC. Opicapone administered concomitantly with standard‐release 100/25 mg LC or LB improved motor performance. Treatments were generally well tolerated and safe. It was concluded that OPC is a new COMT inhibitor that significantly decreased COMT activity and increased systemic exposure to levodopa in PD patients with motor fluctuations.
Automatic I/O scheduling algorithm selection for parallel file systems
Authors: Boito Francieli Zanon , Kassick Rodrigo Virote , Navaux Philippe O. A. , Denneulin Yves 
Published: August 2015

SummaryThis article presents our approach to provide input/output (I/O) scheduling with double adaptivity: to applications and devices. In high‐performance computing environments, parallel file systems provide a shared storage infrastructure to applications. In the situation where multiple applications access this shared infrastructure concurrently, their performance can be impaired because of interference. Our work focuses on I/O scheduling as a tool to improve performance by alleviating interference effects. The role of the I/O scheduler is to decide the order in which applications' requests must be processed by the parallel file system's servers, applying optimizations to adjust the resulting access pattern for improved performance. Our approach to improve I/O scheduling results is based on using information from applications' access patterns and storage devices' sensitivity to access sequentiality. We have applied machine learning to provide the ability to automatically select the best scheduling algorithm for each situation. Our approach improves performance by up to 75% over an approach that uses the same scheduling algorithm to all situations, without adaptability. Our results evidence that both aspects – applications and storage devices – are essential to make good scheduling decisions. Copyright © 2015 John Wiley & Sons, Ltd.
Performance and energy aware scheduling simulator for HPC: evaluating different resource selection methods
Authors: Gómez‐Martín César , Vega‐Rodríguez Miguel A. , González‐Sánchez José‐Luis 
Published: August 2015

SummaryToday, in an energy‐aware society, job scheduling is becoming an important task for computer engineers and system analysts that may lead to a performance per Watt trade‐off of computing infrastructures. Thus, new algorithms, and a simulator of computing environments, may help information and communications technology and data center managers to make decisions with a solid experimental basis. There are several simulators that try to address performance and, somehow, estimate energy consumption, but there are none in which the energy model is based on benchmark data that have been countersigned by independent bodies such as the Standard Performance Evaluation Corporation. This is the reason why we have implemented a performance and energy‐aware scheduling (PEAS) simulator for high‐performance computing. Furthermore, to evaluate the simulator, we propose an implementation of the non‐dominated sorting genetic algorithm‐II (NSGA‐II) algorithm, a fast and elitist multiobjective genetic algorithm, for the resource selection. With the help of the PEAS simulator, we have studied if it is possible to provide an intelligent job allocation policy that may be able to save energy and time without compromising performance. The results of our simulations show a great improvement in response time and power consumption. In most of the cases, NSGA‐II performs better than other ‘intelligent’ algorithms like multiobjective heterogeneous earliest finish time and clearly outperforms the first‐fit algorithm. We demonstrate the usefulness of the simulator for this type of studies and conclude that the superior behavior of multiobjective algorithms makes them recommended for use in modern scheduling systems. Copyright © 2015 John Wiley & Sons, Ltd.
Bicomponent Assembly of VO2 and Polyaniline‐Functionalized Carbon Nanotubes for the Selective Oxidation of Biomass‐Based 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran
Authors: Guo Yuanyuan , Chen Jinzhu 
Published: August 2015

AbstractVanadium dioxide (VO2) immobilized on polyaniline‐functionalized carbon nanotubes (CNTs) (VO2‐PANI/CNT) was prepared for an aerobic oxidation of biomass‐based 5‐hydroxymethylfurfural (HMF) to 2,5‐diformylfuran (DFF) by a bicomponent assembly method, and its structure was characterized by Raman, Brunauer–Emmett–Teller (BET), X‐ray diffraction (XRD), high‐resolution transmission electron microscopy (HRTEM), and X‐ray photoelectron spectroscopy (XPS) technologies. In the reaction system, homogeneously dispersed VO2 nanoparticles were produced by a spontaneous redox process between VO3− anions and the PANI moiety of the PANI/CNT composite material. The PANI/CNT support shows a preferential adsorption to reactant HMF than in the case of product DFF, which can be used as a promoter to prevent the further oxidation of DFF. Hence, compared with other vanadium catalysts, VO2‐PANI/CNT shows excellent catalytic performance for the selective oxidation of HMF to DFF with molecular oxygen as oxidant. In addition, the reaction parameters such as reaction time, reaction temperature, vanadium content, oxygen pressure, and solvent were investigated and a maximum DFF yield of 96 % with a full HMF conversion was observed.
A smartphone‐based U‐Healthcare system for real‐time monitoring of acute myocardial infarction
Authors: Jung Jaehyo , Lee Jihoon , Lee Jihwan , Kim Youn Tae 
Published: August 2015

SummaryIn recent years, medical service has been evolving from systems designed around centralized hospitals to Ubiquitous Healthcare (U‐Healthcare). U‐Healthcare system can facilitate real‐time monitoring of patient states, and can provide medical checkups and management whenever and wherever the medical staff deems necessary. U‐Healthcare services can provide chronic condition monitoring in the early stages of diseases and help execute decisive medical action in emergencies. However, thus far, the application of U‐Healthcare systems has been limited to diseases such as obesity, diabetes, etc. Acute myocardial infarction (AMI) is among the most critical chronic diseases and requires early detection and treatment. In this paper, we propose an AMI diagnostic software technique and protocol that can support real‐time communication between the patient and medical personnel. Our monitoring and diagnostic system has been developed using a protocol based on ISO/IEEE 11073. When data is transferred from the patient's smartphone to a server in hospital, the medical personnel consult the patient's biosensor data to determine the status of the relevant disease and provide appropriate medical service. The relevant information is sent back to the patient's smartphone through a wireless network, and patients can view their data in graphical format through their smartphone. Copyright © 2015 John Wiley & Sons, Ltd.