bluuebunny/crossref_metadata_2025_split huggingface dataset:
Percutaneous closure of patent foramen ovale guided by intracardiac echocardiography and performed through the transfemoral approach in the presence of previously placed inferior vena cava filters: A case series
Authors: Awadalla Hany , Boccalandro Fernando , Majano Romeo A. , Moustapha Ali , Salloum Joseph G. , Smalling Richard W. 
Published: September 2004

AbstractWe present three patients with cryptogenic stroke who underwent transcatheter closure of a patent foramen ovale. All patients have had history of deep venous thrombosis and pulmonary embolism with placement of inferior vena caval filters. The patients were not initially considered suitable candidates for the procedure because of risk of dislodgment of previously implanted inferior vena cava filter. Catheter Cardiovasc Interv 2004;63:242–246. © 2004 Wiley‐Liss, Inc.
Homologous Silver Bismuth Chalcogenide Halides (N,x)P. Part 1. Syntheses and Crystal Structures of the (0,1)P Compound AgBi2S2Cl3 and of Three Members of the (1,x)P Solid Solution Series Ag2xBi4‐2xS6‐4xBr4x.
Authors: Poudeu Pierre Ferdinand Poudeu , Soehnel Tilo , Ruck Michael 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Kinetic Resolution of Amines: A Highly Enantioselective and Chemoselective Acetylating Agent with a Unique Solvent‐Induced Reversal of Stereoselectivity.
Authors: Arseniyadis Stellios , Valleix Alain , Wagner Alain , Mioskowski Charles 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Application in Asymmetric C—C Bond Formation of Solution Phase Ligand Libraries of Monodentate Phosphoramidites.
Authors: Duursma Ate , Lefort Laurent , Boogers Jeroen A. F. , de Vries Andre H. M. , de Vries Johannes G. , Minnaard Adriaan J. , Feringa Ben L. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Pyridopyridazines, Benzimidazolopyrimidines, Triazolopyrimidines, 9‐Oxo‐2,3,6,7‐tetraazabicyclo[3.3.1]nona‐3,7‐diene and Aroylcinnolines from 2‐Arylhydrazono‐3‐oxopropanals.
Authors: Al‐Zaydi Khadijah M. , Elnagdi Mohamed H. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
New Ring‐Expansion Reactions of Hydroxy Propenoyl Cyclic Compounds under Palladium(0)/Phosphine‐Catalyzed Conditions.
Authors: Nagao Yoshimitsu , Tanaka Satoru , Ueki Akiharu , Kumazawa Masunori , Goto Satoru , Ooi Takashi , Sano Shigeki , Shiro Motoo 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Photochemistry of Fluorinated Heterocyclic Compounds. An Expedient Route for the Synthesis of Fluorinated 1,3,4‐Oxadiazoles and 1,2,4‐Triazoles.
Authors: Pace Andrea , Pibiri Ivana , Buscemi Silvestre , Vivona Nicolo 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Concise Synthesis of Stereodefined Dienols and Cyclopentadienes via Direct Addition of 1‐Bromomagnesiobutadienes and 1‐Lithiobutadienes to Carbonyl Compounds.
Authors: Fang Hongyun , Song Qiuling , Wang Zhihui , Xi Zhenfeng 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
ipso‐Nitration of Arylboronic Acids with Chlorotrimethylsilane—Nitrate Salts.
Authors: Prakash G. K. Surya , Panja Chiradeep , Mathew Thomas , Surampudi Vijayalakshmi , Petasis Nicos A. , Olah George A. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Photochemistry of Styryl Substituted Anellated Furan Derivatives. Part 4. Concentration Directed Intra‐ and/or Intermolecular [2 + 2] Cycloaddition.
Authors: Skoric Irena , Marinic Zeljko , Sindler‐Kulyk Marija 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of 5‐Methyl‐1,2,3,4,5,6‐hexahydrocyclopenta[g]carbazole‐1,7‐diones and Crotonyl‐2‐isopropyl‐1‐oxo‐1,2,3,4‐tetrahydrocarbazoles from 1‐Oxo‐1,2,3,4‐tetrahydrocarbazoles by Friedel—Crafts Reaction.
Authors: Danish Isravel A. , Prasad Karnam J. R. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of 3‐Substituted 8‐Hydroxy‐3,4‐dihydroisocoumarins via Successive Lateral and ortho‐Lithiations of 4,4‐Dimethyl‐2‐(o‐totyl)oxazoline.
Authors: Tahara Naruki , Fukuda Tsutomu , Iwao Masatomo 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Chromone Studies. Part 15. Formation and Condensation of Baylis—Hillman Adducts in DABCO‐Catalyzed Reactions of Chromone‐3‐carbaldehydes with Acrylonitrile.
Authors: Kaye Perry T. , Molefe Duduzile M. , Nchinda Aloysius T. , Sabbagh Liezel V. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Lactam‐Derived Vinyl Boronate as a Stable and Crystalline Reagent for the Synthesis of 2‐Substituted Piperidines by Pd‐Catalyzed Coupling Reactions.
Authors: Ferrali Alessandro , Guarna Antonio , Lo Galbo Fabrizio , Occhiato Ernesto G. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Zirconocene‐Mediated Intermolecular Coupling of One Molecule of Si‐Tethered Diyne with Three Molecules of Organonitriles: One‐Pot Formation of Pyrrolo[3,2‐c]pyridine Derivatives via Cleavage of CN Triple Bonds of Organonitriles.
Authors: Sun Xiaohua , Wang Congyang , Li Zhiping , Zhang Shiwei , Xi Zhenfeng 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Unexpected Reaction of 2,2‐Dihydropolyfluoroalkylaldehydes with Ammonia and Aldehydes or Ketones: A Novel Synthetic Method for 4‐Fluoroalkyl‐1,2‐dihydropyrimidine.
Authors: Yang Xian‐Jin , Liu Jin‐Tao 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
The First Synthesis of Substituted Azepanes Mimicking Monosaccharides: A New Class of Potent Glycosidase Inhibitors.
Authors: Li Hongqing , Bleriot Yves , Chantereau Caroline , Mallet Jean‐Maurice , Sollogoub Matthieu , Zhang Yongmin , Rodriguez‐Garcia Eliazar , Vogel Pierre , Jimenez‐Barbero Jesus , Sinay Pierre 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Diethylaluminum Chloride Mediated Vinylsilane Synthesis: Comparison of Different Solvent Systems.
Authors: Kwan Man Lung , Battiste Merle A. , Macala Megan K. , Aybar Sylvia C. , James Nicholas C. , Haoui Joseph J. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Anomalous Ring Cleavage of 1,3‐Dithiole‐ and 1,3‐Diselenole‐2‐thiones under the Cross‐Coupling Conditions Using Triethyl Phosphite.
Authors: Iyoda Masahiko , Watanabe Ryoji , Miyake Yosihiro 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Convenient Syntheses of Aryl and Perfluoroaryl Trichlorogermanes and Germatranes via an Organotin Route.
Authors: Kultyshev Roman G. , Prakash G. K. Surya , Olah George A. , Faller Jack W. , Parr Jonathan 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Novel C‐Thionucleosides: Synthesis and Reactions of 1,5‐ and 1,3‐Dialkyl Derivatives of (1,5‐Dithio‐1‐thiomethyl‐α‐D,L‐arabinopentulopyranos‐1‐yl) ‐1H‐1,2,4‐triazole Nucleosides.
Authors: Al‐Masoudi Najim A. , Al‐Soud Yaseen A. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Biological Evaluation of Novel Apio Nucleosides with Thiazole‐4‐carboxamide and 1,2,4‐Triazole‐3‐carboxamide.
Authors: Kim Myong Jung , Jeong Lak Shin , Kim Joong Hyup , Shin Ji Hye , Chung Soon Yong , Lee Sang Kook , Chun Moon Woo 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Human ACAT‐1 and ‐2 Inhibitory Activities of Saucerneol B, Manassantin A and B Isolated from Saururus chinensis.
Authors: Lee Woo Song , Lee Dae‐Woo , Baek Young‐Il , An So‐Jin , Cho Kyung‐Hyun , Choi Yang‐Kyu , Kim Hyoung‐Chin , Park Ho‐Yong , Bae Ki‐Hwan , Jeong Tae‐Sook 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
A New Lead Compound for Abscisic Acid Biosynthesis Inhibitors Targeting 9‐cis‐Epoxycarotenoid Dioxygenase.
Authors: Han Sun‐young , Kitahata Nobutaka , Saito Tamio , Kobayashi Masatomo , Shinozaki Kazuo , Yoshida Shigeo , Asami Tadao 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
DNA Hybridization at Magnetic Nanoparticles with Electrochemical Stripping Detection
Authors: Zhu Ningning , Zhang Aiping , He Pingang , Fang Yuzhi 
Published: September 2004

AbstractA simple and practical method for electrochemical DNA hybridization assay has been developed to take advantage of magnetic nanoparticles for ssDNA immobilization and zinc sulfide nanoparticle as oligonucleotide label. Magnetic nanoparticles were prepared by coprecipitation of Fe2+ and Fe3+ with NH4OH, and then amino silane was coated onto the surface of magnetite nanoparticles. The magnetic nanoparticles have the advantages of easy preparation, easy surface modification and low cost. The target ssDNA with the phosphate group at the 5′ end was then covalently immobilized to the amino group of magnetite nanoparticles by forming a phosphoramidate bond in the presence of 1‐ethyl‐3‐(3‐dimeth‐ylaminopropyl)carbodiimide (EDAC). The zinc sulfide (ZnS) nanoparticle‐labeled oligonucleotides probe was used to identify the target ssDNA immobilized on the magnetic nanoparticles based on a specific hybridization reaction. The hybridization events were assessed by the dissolution of the zinc sulfide nanoparticles anchored on the hybrids and the indirect determination of the dissolved zinc ions by anodic stripping voltammetry (ASV) at a mercury film glassy carbon electrode (GCE). The proposed method couples the high sensitivity of anodic stripping analysis for zinc ions with effective magnetic separation for eliminating nonspecific adsorption effects and offers great promise for DNA hybridization analysis.
Use of a Commercially Available Wood‐Free Resin Pencil as Convenient Electrode for the ‘Voltammetry of Microparticles’ Technique
Authors: Perdicakis Michel , Aubriet Hugues , Walcarius Alain 
Published: September 2004

AbstractA wood‐free resin pencil comprised of a lead made of graphite particles dispersed in a polymeric matrix is proposed as a convenient low‐cost electrode for the ‘Voltammetry of Microparticles’ technique instead of paraffin impregnated graphite rods. The pencil electrode was successfully applied for the characterization of insulating (Prussian blue, zeolites) and conductive (silver selenide, pyrite) microparticles in various media. The voltammetric responses were comparable to, sometimes even better than, those obtained with applying other electrochemical techniques.
FET‐Based Chemical Sensor Systems Fabricated with Standard Technologies
Authors: Errachid Abdelhamid , Zine Nadia , Samitier Josep , Bausells Joan 
Published: September 2004

AbstractMiniaturized solid‐state ion sensors based on field‐effect transistors on silicon can take advantage of the capabilities of microelectronics and microsystems technology for the integration of combined functionalities. Optimized solid‐state chemical sensors usually require specific materials and fabrication processes. However, if standard fabrication processes can be used, integrated chemical sensor systems can be developed in a shorter time and in a cost effective way. We show that, for applications in which a long operating time is not required, such as in disposable biomedical sensors, good integrated sensor systems can be fabricated with standard materials and processes. Specific examples are presented, such as multisensor systems, sensors with integrated signal‐processing circuits and sensors with particle manipulation electrodes.
Nuclear pore complex oxalate binding protein p62: Its expression on oxalate exposure to VERO cells
Authors: Sivakamasundari P. , Varalakshmi P. , Kannabiran M. 
Published: September 2004

AbstractOxalate rich stones are the most common among the various stones. Oxalate binding protein plays a vital role in the transport of oxalate. Nuclear pore complex (NPC) contains a protein of molecular weight 62 kDa and it has maximum oxalate binding activity. The physiological significance of the presence of oxalate binding protein in the NPC is not well understood. In order to study its function, the expression of this protein during oxalate stress condition and the morphological changes on oxalate exposure to synchronized VERO cells have been determined. VERO cells were synchronized at different stages of cell cycle using cell cycle blockers and expression of the NPC p62 was assessed using enzyme linked immunosorbent assay (ELISA) technique with p62 antibody (MAb 414). Expression of NPC p62 was more pronounced in 1.0 mM oxalate concentration in mitotic phase than in S phase, suggesting cell cycle dependency. During oxalate exposure there is cell aggregation and complete degeneration of cell morphology occurs, which in turn lead to the expression of certain genes, including the NPC oxalate binding protein p62. Thus, oxalate induces degeneration of cells (may be due to the lipid peroxidation) and leads to the expression of NPC oxalate binding protein and the expression is of cell cycle dependent manner. © 2004 Wiley‐Liss, Inc.
Inhibition of cell proliferation in human breast tumor cells by antisense oligonucleotides against facilitative glucose transporter 5
Authors: Chan K.K. , Chan Judy Y.W. , Chung Karen K.W. , Fung Kwok‐Pui 
Published: September 2004

AbstractIn recent years, successful examples of antisense oligonucleotide (AS) therapy for genetic diseases have stimulated scientists to investigate its application on cancer diseases. AS can be used to down‐regulate the mRNA and protein expression by annealing to specific region of the target mRNA which is responsible for the malignancy. Glucose transporter 5 (Glut5) is a tissue specific transporter that can be found on breast cancer tissues but not on normal breast tissues. Therefore, it is of clinical interest to investigate whether AS against Glut5 mRNA can tackle breast cancer. In this study, two cell lines, MCF‐7 which is estrogen‐receptor positive and MDA‐MB‐231 which is estrogen‐receptor negative, were used to mimic breast cancer tissues at early and late stages, respectively. A 15‐base sequence around the start codon of Glut5 was used. It was found that AS against Glut5 exerted anti‐proliferative effect on both of these two breast tumor cell lines and seemed to exert its effect via the suppression of expression of Glut5 proteins in the cells. AS against Glut5 exhibited no effect on human hepatoma HepG2 cells which do not possess any Glut5. The results imply an alternative way in treating breast tumor as the AS against Glut5, unlike tamoxifen, takes effect on breast tumor cells via suppressing the expression of Glut5 that they specifically possess, and regardless whether the breast tumors are estrogen dependent or not. © 2004 Wiley‐Liss, Inc.
Effects of post‐treatment with 6‐Dimethylaminopurine (6‐DMAP) on ethanol activation of mouse oocytes at different ages
Authors: Lan Guo‐Cheng , Ma Suo‐Feng , Wang Zi‐Yu , Luo Ming‐Jiu , Chang Zhong‐Le , Tan Jing‐He 
Published: September 2004

AbstractTo study the effect of post‐treatment with 6‐Dimethylaminopurine (6‐DMAP) on oocyte activation and development, mouse oocytes collected at different times post human chorion gonadotropin (hCG) injection were incubated in 6‐DMAP‐containing Chatot‐Ziomek‐Bavister (CZB) medium for different periods after ethanol exposure, and activation and development were observed. When oocytes were cultured in 6‐DMAP without prior ethanol exposure, the highest activation rate was only 40%. Incubation in 6‐DMAP for 6 h following ethanol exposure significantly (P<0.05) increased the activation rate in oocytes recovered 15 and 18 h post hCG, but this effect was not significant in the 21 h oocytes. When oocytes were incubated in 6‐DMAP for 1 h at different time points after ethanol, a 6‐DMAP susceptible temporal window was found to be located from the second to the fifth h in the 18 h oocytes and from the fourth to the fifth h in the 15 h oocytes, and within the window, the duration of 6‐DMAP incubation can be reduced to 0.5 h with more than 80% activation. With the 13 h oocytes, however, 6‐DMAP‐incubation can only be shortened to 3 h and no specific temporal window was identified. Oocytes that were incubated in 6‐DMAP for 1 or 2 h after ethanol exposure developed to morula/blastocyst stages at significantly (P<0.05) higher rates than those incubated in 6‐DMAP for 6 h. Our results suggested that (i) long duration of 6‐DMAP incubation impaired the development of mouse parthenogenotes; (ii) the effect of 6‐DMAP alone was limited without prior ethanol exposure; (iii) the egg age affected both the timing of 6‐DMAP susceptibility and the duration of exposure required to obtain a maximal activating effect; (iv) the most effective activating protocols varied for oocytes of different ages. J. Exp. Zool. 301A:837–843, 2004. © 2004 Wiley‐Liss, Inc.
Quantitative analysis of flavour volatiles detects differences among closely related traditional cultivars of tomato
Authors: Ruiz Juan J , Alonso Arancha , García‐Martínez Santiago , Valero Manuel , Blasco Pilar , Ruiz‐Bevia Francisco 
Published: September 2004

AbstractVolatile compounds with a major contribution to aroma have been quantitatively determined in four traditional tomato cultivars and one commercial F1 hybrid. One of the traditional cultivars was the most appreciated for flavour and overall acceptability in tests performed using a panel of 30 untrained tasters. The same cultivar showed significantly higher contents of hexanal and cis‐3‐hexenal volatile compounds, which have been previously reported to be two of the most important contributors to tomato flavour. On the basis of a small number of fruits per cultivar, significant differences among very closely related tomato cultivars can be detected for volatile aromas, thus allowing the use of the determination of volatiles as a possible tool in tomato breeding programs, making even the selection of single plants possible. Copyright © 2004 Society of Chemical Industry
Influence of water and nitrogen deficit on fruit ripening and aroma potential of Vitis vinifera L cv Sauvignon blanc in field conditions
Authors: des Gachons Catherine Peyrot , Leeuwen Cornelis Van , Tominaga Takatoshi , Soyer Jean‐Pierre , Gaudillère Jean‐Pierre , Dubourdieu Denis 
Published: September 2004

AbstractS‐Cysteine conjugate precursors of three volatile thiols were monitored in Vitis vinifera L cv Sauvignon blanc grapes during fruit ripening to assess the influence of vine water and nitrogen status on the grape aroma potential in field conditions. Four dry farmed plots were studied in the Pessac‐Léognan and Graves appellations (Bordeaux area) in 1998, which was a very dry vintage, and in 1999, when regular summer rainfall occurred. Soil water‐holding capacity ranged from very low to high. Soil total nitrogen content was related to soil organic matter content, which was highly variable on the four plots. Vine vigour was enhanced by both high water and nitrogen status. Major compounds in grapes depended mainly on vine water status. Water deficit‐stressed vines produced small berries with low sugar and low total acidity. Grape aroma potential was highest in vines under mild water deficit and moderate nitrogen supply. Severe water deficit stress seemed to limit aroma potential, as did nitrogen deficiency. Consequences for site selection and irrigation management for Sauvignon blanc are discussed. Copyright © 2004 Society of Chemical Industry
Study of albedo and carpelar membrane degradation for further application in enzymatic peeling of citrus fruits
Authors: Pretel M Teresa , Amorós Asunción , Botella M Angeles , Serrano María , Romojaro Félix 
Published: September 2004

AbstractThe enzymatic activity of four commercial enzymatic preparations (Peelzym I, II, III and IV) on citrus pectin, polygalacturonic acid and carboxymethylcellulose was determined (measured as the decrease in relative viscosity). In addition, the effectiveness of these preparations in the enzymatic degradation of the albedo and the segment membrane from Cimboa fruits was assessed. The highest activity on citrus pectin was shown by Peelzym II, although Peelzym I and IV activities were also elevated, 94.5 ± 6.2% and 88.7 ± 8.3% respectively of Peelzym II activity, and no relevant differences were found between them. Peelzym II also showed the highest activity for polygalacturonic acid, which was approximately 25% more than that of Peelzym I and IV, and more than double that of Peelzym III. Peelzym IV showed 40% more EM‐cellulase activity than Peelzym I, II and III. Segment membrane solution was degraded mainly by the enzymatic preparations Peelzym I and II. Thus, the most effective activities for the degradation of the carpelar membrane from Cimboa were those activities which act mainly on pectin and especially on polygalacturonic acid. However, the albedo was degraded to the greatest extent by Peelzym II and, in turn, the most important activities for albedo degradation were those which act on polygalacturonic acid. In addition, the concentration of the enzymatic preparation for the degradation of the carpelar membrane was lower than that required for albedo degradation. Copyright © 2004 Society of Chemical Industry
Evaluation of four isolation techniques for honey aroma compounds
Authors: Alissandrakis Eleftherios , Tarantilis Petros A , Harizanis Paschalis C , Polissiou Moschos 
Published: September 2004

AbstractThe analysis of the volatile fraction of honey provides useful information for the determination of the botanical and geographical origin. However, the results obtained vary greatly upon the extraction procedure employed. Four different isolation techniques were compared, that is hydrodistillation (HD), micro‐simultaneous steam distillation–solvent extraction (MSDE), ultrasound‐assisted extraction (USE) and solid‐phase microextraction (SPME). From the data obtained, USE and SPME seem to be more suitable for the isolation of potent marker compounds. HD and MSDE have main drawbacks because of the drastic conditions used that lead to the formation of artefacts and the degradation of sensitive compounds. These drawbacks are avoided when employing USE and SPME. Copyright © 2004 Society of Chemical Industry
Complete 1H and 13C NMR spectral assignment of cis‐ and trans‐ 3‐{2‐[2‐(4‐methylphenyl)ethenyl]phenyl]}sydnones
Authors: Butković Kristina , Marinić Željko , Šindler‐Kulyk Marija 
Published: September 2004

Abstract1H and 13C NMR spectra of cis‐ and trans‐3‐{2‐[2‐(4‐methylphenyl)ethenyl]phenyl]}sydnones, the first stilbene‐substituted mezoionic oxadiazolium rings, were fully assigned combining the information in various solvents, such as deuterated benzene, acetone and chloroform, using 2D NMR techniques. Copyright © 2004 John Wiley & Sons, Ltd.
Two new irregular acyclic sesquiterpenes aldehydes from Santolina corsica essential oil
Authors: Ferrari Bernard , Tomi Félix , Richomme Pascal , Casanova Joseph 
Published: September 2004

AbstractTwo isomeric irregular sesquiterpene aldehydes, namely 3,9‐dimethyl‐6‐isopropyl‐2(E),7(E),9‐decatrienal and 3,9‐dimethyl‐6‐isopropyl‐2(Z),7(E),9‐decatrienal, were isolated from the essential oil of Santolina corsica and their structures were elucidated by 1D and 2D NMR spectroscopy. Copyright © 2004 John Wiley & Sons, Ltd.