bluuebunny/crossref_metadata_2025_split huggingface dataset:
Donor–Acceptor Heterojunction Configurations Based on DNA–Multichromophore Arrays
Authors: Nakamura Mitsunobu , Tsuto Koji , Jomura Ayumi , Takada Tadao , Yamana Kazushige 
Published: July 2015

AbstractMultichromophore arrays of bis(2‐thienyl)diketopyrrolopyrrole (DPP) and naphthalenediimide (NDI) with two ZnII‐cyclens were constructed using thymidine DNA as a scaffold through the binding of the ZnII‐cyclens with thymine bases. We demonstrate photocurrent generation in a donor–acceptor heterojunction configuration consisting of the DPP (donor) and NDI (acceptor) arrays co‐immobilized on an Au electrode. The co‐immobilized electrode exhibited good photocurrent responses because of the efficient charge separation between the DPP and NDI arrays. In contrast, an immobilized electrode consisting of randomly assembled DPP‐NDI arrays generated no photocurrent response because DPP formed ground‐state charge‐transfer complexes with NDI in the randomly assembled arrays. Therefore, our approach to generate donor–acceptor heterojunctions based on DNA–multichromophore arrays is a useful method to efficiently generate photocurrent.
Asymmetric Total Synthesis of (−)‐Englerin A through Catalytic Diastereo‐ and Enantioselective Carbonyl Ylide Cycloaddition
Authors: Hanari Taiki , Shimada Naoyuki , Kurosaki Yasunobu , Thrimurtulu Neetipalli , Nambu Hisanori , Anada Masahiro , Hashimoto Shunichi 
Published: July 2015

AbstractAn asymmetric total synthesis of the guaiane sesquiterpene (−)‐englerin A, a potent and selective inhibitor of the growth of renal cancer cell lines, was accomplished. The basis of the approach is a highly diastereo‐ and enantioselective carbonyl ylide cycloaddition with an ethyl vinyl ether dipolarophile under catalysis by dirhodium(II) tetrakis[N‐tetrachlorophthaloyl‐(S)‐tert‐leucinate], [Rh2(S‐TCPTTL)4], to construct the oxabicyclo[3.2.1]octane framework with concomitant introduction of the oxygen substituent at C9 on the exo‐face. Another notable feature of the synthesis is ruthenium tetraoxide‐catalyzed chemoselective oxidative conversion of C9 ethyl ether to C9 acetate.
Construction of a Near‐Infrared Fluorescent Turn‐On Probe for Selenol and Its Bioimaging Application in Living Animals
Authors: Chen Hua , Dong Baoli , Tang Yonghe , Lin Weiying 
Published: July 2015

AbstractAs selenocysteine (Sec) carries out the majority of the functions of the various Se‐containing species in vivo, it is of high importance to develop reliable and rapid assays with biocompatibility to detect Sec. Herein, an NIR fluorescent turn‐on probe for highly selective detection of selenol was designed and synthesized. The probe exhibits large turn‐on signal upon treatment with selenocysteine (R‐SeH), and it was further demonstrated that the new NIR fluorescent probe can be employed to image selenol in living animals.
ChemInform Abstract: Tuning the Magnetic Properties of New Layered Iron Chalcogenides (BaF)2Fe2‐xQ3 (Q: S, Se) by Changing the Defect Concentration on the Iron Sublattice.
Authors: Sturza Mihai , Allred Jared M. , Malliakas Christos D. , Bugaris Daniel E. , Han Fei , Chung Duck Young , Kanatzidis Mercouri G. 
Published: July 2015

AbstractSingle‐phase (BaF)2Fe2‐xQ3 (Q: S, Se; x = 0, 0.1, 0.2, 0.3) are prepared by solid state reaction of stoichiometric amounts of BaS, BaSe, BaF2, Fe, S, and Se (graphite crucible inside evacuated silica tube, 850 °C, 12 h).
ChemInform Abstract: Acid‐Stable Peroxoniobophosphate Clusters to Make Patterned Films.
Authors: Son Jung‐Ho , Park Deok‐Hie , Keszler Douglas A. , Casey William H. 
Published: July 2015

Abstract(Me4N)5 [HNb4P2O14(O2)4] ·9H2O (I) is prepared by hydrothermal reaction of Nb2O5, Me4NOH, and H3PO4 (autoclave, 130 °C, 16 h) followed by addition of 30% aq.
ChemInform Abstract: Asymmetric Hydroamination Catalyzed by a New Chiral Zirconium System: Reaction Scope and Mechanism.
Authors: Zhou Xiaoguang , Wei Bing , Sun Xiu‐Li , Tang Yong , Xie Zuowei 
Published: July 2015

AbstractNew chiral zirconium systems catalyze the asymmetric hydroamination/cyclization of primary aminoalkenes affording five‐ and six‐membered N‐heterocyclic amines with up to 94% e.e.
ChemInform Abstract: Aqueous Enantioselective Aldol Reaction of Methyl‐ and Phenylglyoxal Organocatalyzed by N‐Tosyl‐(Sa)‐binam‐L‐prolinamide.
Authors: Moles Fernando J. N. , Guillena Gabriela , Najera Carmen 
Published: July 2015

AbstractChiral γ‐oxo‐β‐hydroxycarbonyl compounds and ε‐oxo‐δ‐hydroxy‐α,β‐unsaturated esters are synthesized by aldol reactions of methylglyoxal (I) under aqueous conditions or phenylglyoxal monohydrate with ketones or aldehydes.
ChemInform Abstract: Intermolecular Carbene S—H Insertion Catalyzed by Engineered Myoglobin‐Based Catalysts.
Authors: Tyagi Vikas , Bonn Rachel B. , Fasan Rudi 
Published: July 2015

AbstractEngineered variants of sperm whale myoglobin are found to efficiently catalyze C—S bond forming transformation across a diverse set of aryl and alkyl mercaptan substrates and α‐diazoester carbene donors, providing high conversions (60—99%) and catalytic turnover numbers.
ChemInform Abstract: Synthesis of a Heterogeneous Artificial Metallolipase with Chimeric Catalytic Activity
Authors: Filice M. , Romero O. , Gutierrez‐Fernandez J. , de las Rivas B. , Hermoso J. A. , Palomo J. M. 
Published: July 2015

AbstractA new solid‐phase strategy using lipase as a biomolecular scaffold to produce a large amount of Cu2+‐metalloenzyme is presented.
ChemInform Abstract: Transition‐Metal‐Catalyzed Intramolecular Cyclization of Amido(hetero)arylboronic Acid Aldehydes to Isoquinolinones and Derivatives.
Authors: Marques C. S. , Peixoto D. , Burke A. J. 
Published: July 2015

AbstractThe efficient metal‐catalyzed intramolecular cyclization of amidoarylboronic acid aldehydes (I), (III), (V) is the key step in the simple three step synthesis of a library of chiral isoquinolinone derivatives with aryl (II), pyridyl (IV), and thiophene (VI) cores.
ChemInform Abstract: A Tuned Bicyclic Proazaphosphatrane for Catalytically Enhanced N‐Arylation Reactions with Aryl Chlorides.
Authors: Kim So Han , Kim Min , Verkade John G. , Kim Youngjo 
Published: July 2015

AbstractAn efficient Pd‐catalyzed process for the Buchwald type amination of aryl chlorides with primary and secondary aliphatic and aromatic amines is described using a new and electron‐rich proazaphosphatrane (PPT) as ligand.
ChemInform Abstract: A Baker—Venkataraman Retro‐Claisen Cascade Delivers a Novel Alkyl Migration Process for the Synthesis of Amides.
Authors: Ameen Dana , Snape Timothy J. 
Published: July 2015

AbstractIf water is not strictly excluded the initially formed Baker—Venkataraman rearrangement products of substrates (I) undergo retro‐Claisen rearrangement to form amides (II).
ChemInform Abstract: Cu‐Catalyzed Asymmetric Addition of sp2‐Hybridized Zirconium Nucleophiles to Racemic Allyl Bromides.
Authors: Sidera Mireia , Fletcher Stephen P. 
Published: July 2015

AbstractAlkenylzirconium nucleophiles generated in situ by the hydrozirconation of terminal alkynes undergo dynamic kinetic asymmetric allylic alkenylation with racemic allyl bromides to give enantioenriched products.
ChemInform Abstract: Palladium‐Catalyzed Regio‐ and Stereoselective Cross‐Addition of Terminal Alkynes to Ynol Ethers and Synthesis of 1,4‐Enyn‐3‐ones.
Authors: Hari Babu Madala , Dwivedi Vikas , Kant Ruchir , Sridhar Reddy Maddi 
Published: July 2015

AbstractThe title reaction proceeds in a highly regio‐ and stereoselective manner.
ChemInform Abstract: Copper‐Catalyzed ortho‐Halogenation of Arenes and Heteroarenes Directed by a Removable Auxiliary.
Authors: Li Bo , Liu Bin , Shi Bing‐Feng 
Published: July 2015

AbstractThe new method is scalable and tolerates a broad range of functional groups and heteroarenes, providing an efficient access to chlorinated arenes and heteroarenes.
ChemInform Abstract: Regioselective Nitration of Phenols and Phenyl Ethers Using Aluminium Nitrate on Silica as a Nitrating System.
Authors: Patil Mahadeo R. , Mohite Pravinkumar H. , Shisodia Suresh , Keri Rangappa S. 
Published: July 2015

AbstractThe reported methodology shows a considerable enhancement in the reaction rate along with a high ortho‐selectivity, excellent yields and ease of operation.
ChemInform Abstract: Cation‐Triggered Switchable Asymmetric Catalysis with Chiral Aza‐CrownPhos.
Authors: Ouyang Guang‐Hui , He Yan‐Mei , Li Yong , Xiang Jun‐Feng , Fan Qing‐Hua 
Published: July 2015

AbstractThe catalytic activity of a novel aza‐crown‐phosphoramidite ligand is switched on by the interaction with sodium ions.
ChemInform Abstract: Palladium‐Catalyzed Regioselective Synthesis of Oxygenated Biphenyls.
Authors: Chittimalla Santhosh Kumar , Kuppusamy Rajesh , Akavaram Naresh 
Published: July 2015

AbstractThe title compounds are easily obtained by Pd‐catalyzed Michael addition reaction of arylboronic acids to cyclohexa‐2,4‐dienones.
ChemInform Abstract: A Facile Synthesis of Novel Pyridone‐Anellated Spirooxindolepyrrolidines via 1,3‐Dipolar Cycloaddition.
Authors: Al‐As'ad Randa M. , El‐Abadelah Mustafa M. , Sabri Salim S. , Zahra Jalal A. , Awwadi Firas F. , Voelter Wolfgang 
Published: July 2015

Abstractof N‐methylmaleimide as 1,3‐dipolarophile and the appropriate azomethine ylide generated in situ via decarboxylative condensation reaction of α‐amino acids with pyridine‐anellated isatin
ChemInform Abstract: Synthesis of β,β‐Disubstituted γ‐Butyrolactones by Chemo‐Selective Oxidation of 1,4‐Diols and γ‐Hydroxy Olefins with RuCl3/NaIO4.
Authors: Gao Rong , Fan Rong , Canney Daniel J. 
Published: July 2015

AbstractThe ability of RuCl3/NaIO4 to selectively oxidize primary hydroxyl groups in the presence of secondary alcohols furnishing lactones is also demonstrated.
ChemInform Abstract: Synthesis and Characterization of a Tetracationic Acidic Organic Salt and Its Application in the Synthesis of Bis(indolyl)methanes and Protection of Carbonyl Compounds.
Authors: Halimehjani Azim Ziyaei , Hooshmand Seyyed Emad , Shamiri Elham Vali 
Published: July 2015

AbstractThe new tetracationic organic salt TCAOS is successfully applied as ecofriendly and reusable catalyst for the synthesis of bis(indolyl)methanes from indoles and carbonyl compounds and the acetalization of carbonyl compounds under solvent‐free conditions.
ChemInform Abstract: Palladium‐Catalyzed Direct C2‐Arylation of an N‐Heterocyclic Carbene: An Atom‐Economic Route to Mesoionic Carbene Ligands.
Authors: Ghadwal Rajendra S. , Reichmann Sven O. , Herbst‐Irmer Regine 
Published: July 2015

AbstractThe title reaction of N‐heterocyclic carbene (I) with aryl iodides (II) produces imidazolium iodides (III).
ChemInform Abstract: Metal‐Free [2 + 2 + 1] Annulation of Alkynes, Nitriles and Nitrogen Atoms from Iminoiodanes for Synthesis of Highly Substituted Imidazoles.
Authors: Saito Akio , Kambara Yui , Yagyu Takuma , Noguchi Keiichi , Yoshimura Akira , Zhdankin Viktor V. 
Published: July 2015

AbstractThe title reaction is promoted by BF3 nitrile complexes and proceeds in moderate to good yields with high regioselectivities.
ChemInform Abstract: Environmentally Benign Synthesis, Molecular Properties Prediction and Antiinflammatory Activity of Novel Isoxazolo[5,4‐d]isoxazol‐3‐yl‐aryl‐methanones via Vinylogous Henry Nitroaldol Adducts as Synthons.
Authors: Rajanarendar E. , Rama Krishna S. , Nagaraju D. , Govardhan Reddy K. , Kishore B. , Reddy Y. N. 
Published: July 2015

Abstract9 Title compounds of type (V) are prepared and screened for their anti‐inflammatory activities.
ChemInform Abstract: 3,4‐(Methylenedioxy)aniline as Precursor to the Synthesis of Thiazolidin‐4‐ones (IV).
Authors: Masteloto Hellen G. , Drawanz Bruna B. , Berwaldt Gabriele A. , Neuenfeldt Patricia D. , Siqueira Geonir M. , Cunico Wilson 
Published: July 2015

AbstractThese referred heterocycles (IV) are potent biologically active compounds due to the presence of two important moieties, thiazolidinone and 1,3‐benzodioxole.
ChemInform Abstract: Synthetic Application of Gold Nanoparticles and Auric Chloride for the Synthesis of 5‐Substituted 1H‐Tetrazoles.
Authors: Kumar Satyanand , Kumar Arvind , Agarwal Alka , Awasthi Satish Kumar 
Published: July 2015

AbstractAuCl3 as well as Au nanoparticles are efficient catalysts for the synthesis of 5‐substituted tetrazoles via [3 + 2]cycloaddition of sodium azides with various aromatic, heteroaromatic, and aliphatic nitriles.
ChemInform Abstract: Regioselective Synthesis and Antibacterial Activity of 3‐(Cyanoacetyl)indole‐Based Kojic Acid Derivatives.
Authors: Baharfar Robabeh , Asghari Sakineh , Kiani Maryam 
Published: July 2015

AbstractA simple protocol for the synthesis of novel indole‐based kojic acid derivatives (IV) via three‐component condensation reaction is given.
ChemInform Abstract: Synthesis of New Pyrano[2′,3′:5,6]chromeno[4,3‐b]quinolin‐4‐ones via Aza‐Diels—Alder Reaction.
Authors: Kumar Bejjanki Naveen , Venkatesham Akkaladevi , Nagaiah Kommu , Babu Nanubolu Jagadeesh 
Published: July 2015

AbstractA simple and efficient one‐pot method for the synthesis of the title compounds (III) (11 examples) via intramolecular aza‐Diels—Alder reaction of imines, formed from aniline derivatives (II), and 7‐propynyloxychromene derivatives (I) is developed.
ChemInform Abstract: Cascade Imination, Buchwald—Hartwig Cross Coupling and Cycloaddition Reaction: Synthesis of Pyrido[2,3‐d]pyrimidines.
Authors: Saikia Pallabi , Sharma Gitarthi , Gogoi Sanjib , Boruah Romesh C. 
Published: July 2015

AbstractA novel, environmentally benign procedure for the efficient synthesis of biologically important pyridopyrimidines from 6‐amino‐1,3‐dialkyluracil derivatives (I) is developed.
ChemInform Abstract: Zn(II) and Cu(II) Complexes Containing Bioactive O,O‐Chelated Ligands: Homoleptic and Heteroleptic Metal‐Based Biomolecules
Authors: Mendiguchia Barbara Sanz , Aiello Iolinda , Crispini Alessandra 
Published: July 2015

AbstractReview: 127 refs.
Numerical comparison of gas‐liquid bubble columns and gas‐solid fluidized beds
Authors: Abbasi Mojgan , Grace John R. , Sotude‐Gharebagh Rahmat , Zarghami Reza , Mostoufi Navid 
Published: July 2015

AbstractThis paper investigates the degree of similarity between fluidized beds and bubble columns based on Eulerian‐Eulerian two‐dimensional simulations of an air‐water bubble column and an air‐FCC fluidized bed. Predictions for both systems are compared with available hydrodynamic experimental data, i.e. bed expansion, local axial velocity, local gas hold‐up, and wall pressure fluctuations at different heights and for different gas velocities. Dynamic characteristics of the simulated pressure fluctuations are compared with measured fluctuations. The local gas holdup in the bubble column and bubble volume fraction in the fluidized bed are qualitatively analogous and, to a lesser degree, quantitatively similar. It is also demonstrated that the liquid and solid velocities are distributed in similar manners. The mean bubble diameters in the bubble column and fluidized bed are more similar at low gas velocities than at higher gas velocities. Frequency spectra of the fluidized bed and bubble column reveal differences and similarities related to the liquid and solid properties. The outcome of this work can be used to improve procedures for hydrodynamic characterization of both systems for scale‐up purposes based on hydrodynamic similarities and differences.
Overview of the Acetylcholine Spasm Provocation Test
Authors: Sueda Shozo , Kohno Hiroaki , Ochi Takaaki , Uraoka Tadao 
Published: July 2015

ABSTRACTThe acetylcholine (ACh) spasm provocation test proposed by Yasue, Okumura et al more than a quarter‐century ago has become a popular method for induction of coronary spasm. This test is safe and has a low rate of complications. However, it may be limited in its ability to document attacks in daily life because previously it was the gold‐standard method for diagnosing active variant angina. There may be some clinical issues to modify for the next generation of cardiologists. A maximal ACh dose of 50/100 µg in the right coronary artery/left coronary artery is recommended in the Japanese Circulation Society guidelines. We often experienced the usefulness of a maximal ACh dose of 80/200 µg for the induction of coronary spasm in some cases with low or moderate disease activity. It may be necessary to reconsider the maximal ACh dose as a modified method for today's real‐world clinical practice. In young patients with rest angina, intracoronary injection of ACh is less sensitive for diagnosis; in these cases, we recommend performing sequential spasm provocation tests. Especially in female patients, to document coronary artery spasm we recommend performing ACh tests first, instead of ergonovine tests, due to the supersensitivity of ACh. We also recommend supplementary use of ACh and ergonovine. This review summarizes our experiences with the ACh spasm provocation test over a period of 24 years. We have found it to be a reliable and useful method for contributing a variety of clinical information and recommend it to the next generation of cardiologists.
Management of Arrhythmias in Cardiac Sarcoidosis
Authors: Rosenthal David G. , Bravo Paco E. , Patton Kristen K. , Goldberger Zachary D. 
Published: July 2015

ABSTRACTThe prevalence of cardiac involvement in sarcoidosis is under‐recognized and is associated with multiple complications, including conduction block, arrhythmias, and sudden death. The comparative roles of common therapies have been inadequately studied. The purpose of this review is to examine the literature regarding treatments utilized to manage arrhythmias associated with cardiac sarcoidosis.
Non–Vitamin K Antagonist Oral Anticoagulant Use in Patients With Atrial Fibrillation and Associated Intracranial Hemorrhage: A Focused Review
Authors: Arbit Boris , Hsu Jonathan C. 
Published: July 2015

ABSTRACTAtrial fibrillation (AF) is the most common cardiac arrhythmia and predisposes patients to an increased risk of embolic stroke. After nearly 60 years, warfarin is no longer the only effective therapeutic option for patients with AF. Large randomized trials have consistently shown that non–vitamin K oral anticoagulants (NOACs) including dabigatran, rivaroxaban, apixaban, and edoxaban significantly reduce from the risk of intracranial hemorrhage (ICH) compared with warfarin. We provide a focused review regarding the NOACs and ICH in AF patients by summarizing findings of these large clinical trials, mechanisms of lower ICH, reversal strategies with specific agents, and monitoring strategies.
Adoption and cancer survivors: Findings from a learning activity for oncology nurses
Authors: Quinn Gwendolyn P. , Zebrack Bradley J. , Sehovic Ivana , Bowman Meghan L. , Vadaparampil Susan T. 
Published: July 2015

BACKGROUNDTo the authors' knowledge, little is known regarding the rate at which cancer survivors successfully adopt a child or about their experiences negotiating a costly, and perhaps discriminatory, process regarding the prospective parent's health history. The current study describes the results of a learning activity in which nurses contacted an adoption agency to learn more about the process for survivors with the goal of helping nurses provide patients with accurate information for making a well‐informed decision regarding adoption.METHODSTraining program participants identified an adoption agency (local, state, or international) and conducted an interview using a semistructured guide. After the interview, participants created a summary of responses to the questions. The authors examined responses to each question using qualitative content analysis.RESULTSA total of 77 participants (98% completion rate) across 15 states provided a summary. Responses were distributed across the following categories: adoption costs, steps required for survivors seeking adoption, challenges for survivors seeking adoption, birth parents' reservations, and planned institutional changes to increase adoption awareness. The majority of respondents reported improving their knowledge of adoption and cancer, increased challenges for survivors, and the need to educate patients concerning the realities of adoption policies. The need for a letter stating the survivor was 5 years cancer free was identified as a significant obstacle for survivors.CONCLUSIONSNurses are charged with following practice guidelines that include recommendations for appropriate reproductive health referrals. Cancer survivors would benefit from a health care provider who can provide education and concrete information when patients are making a decision about fertility and adoption. Cancer 2015;121:2993–3000. © 2015 American Cancer Society.
Interest prediction in social networks based on Markov chain modeling on clustered users
Authors: Zheng Xianghan , An Dongyun , Chen Xing , Guo Wenzhong 
Published: July 2015

SummaryEffective user interest prediction is significant for service providers in a set of application scenarios such as user behavior analysis and resource recommendation. However, existing approaches are either incomplete or proprietary. In this paper, user interest prediction based on the Markov chain modeling on clustered users is proposed with the following procedure: collect dataset from 4613 users and more than 16 million messages from Sina Weibo; obtain each user's interest eigenvalue sequence and establish single‐Markov chain model; and implement user clustering algorithm for the multi‐Markov chain construction in order to divide users into a set of predefined interest categories. The proposed solution is capable of predicting both long‐term and short‐term user interests based on a suitable selection of the initial state distribution, λ. The proposed solution also proves that short‐term interests are consistent with long‐term interests if the influences of social or user‐related events that cause interruptions (e.g., earthquake and birthday) are not considered. Furthermore, experiments show that the proposed solution is feasible and efficient and can achieve a higher accuracy of prediction than that of the other approaches such as Support Vector Machine (SVM) and K‐means. Copyright © 2015 John Wiley & Sons, Ltd.
One‐Pot Preparation of Propargylamines Catalyzed by Heterogeneous Copper Catalyst Supported on Periodic Mesoporous Organosilica with Ionic Liquid Framework
Authors: Gholinejad Mohammad , Karimi Babak , Aminianfar Afsaneh , Khorasani Mojtaba 
Published: July 2015

AbstractCopper supported on periodic mesoporous organosilica (PMO) with alkylimidazolium frameworks is a highly efficient and recoverable catalyst for the preparation of propargylamines through the three‐component coupling reaction of aldehydes, alkynes, and amines. The new catalyst is characterized using N2 adsorption/desorption analysis, transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), thermogravimetric analysis (TGA), diffuse reflectance infrared Fourier transform spectroscopy (DRIFT‐IR), and elemental analysis. The catalyst is easily recovered by a simple filtration process and subsequently reused in the seven reaction cycles without any loss of catalytic activity.