bluuebunny/crossref_metadata_2025_split huggingface dataset:
Titanium‐Monosubstituted Polyoxometalates: Relation Between Homogeneous and Heterogeneous Ti‐Single‐Site‐Based Catalysis
Authors: Kholdeeva Oxana A. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
From Exocyclic‐Olefinic Carbohydrate Derivatives to Functionalized Carbocyclic Compounds
Authors: Zhou Jian , Wang Guannan , Zhang Li‐He , Ye Xin‐Shan 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Molecular Rearrangements During Terpene Syntheses
Authors: Banerjee Ajoy K. , Vera William J. , Mora Henry , Laya Manuel , Bedoya Liadis , Melean Carlos , Poon PO. S. , Cabrera Elvia V. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Advances in Liquid‐Phase Friedel—Crafts Acylation of Aromatics Catalyzed by Heterogeneous Solids
Authors: Jana Suman K. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthetic Applications of Buchwald′s Phosphines in Palladium‐Catalyzed Aromatic Bond Forming Reactions
Authors: Mauger Christelle C. , Mignani Gerard A. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium Neocuproine Catalyzed Aerobic Oxidation of Alcohols in Aqueous Solvents
Authors: Arends Isabel W. C. E. , ten Brink Gerd‐Jan , Sheldon Roger A. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Design of Highly Functional Small‐Molecule Catalysts and Related Reactions Based on Acid—Base Combination Chemistry
Authors: Ishihara Kazuaki , Sakakura Akira , Hatano Manabu 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
1,2,4‐Triazoles: Synthetic Approaches and Pharmacological Importance
Authors: Al‐Masoudi I. A. , Al‐Soud Y. A. , Al‐Salihi N. J. , Al‐Masoudi N. A. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Survey of Synthetic Routes Towards the Pyranonaphthoquinone Antibiotic Pentalongin and Syntheses of the Corresponding Nitrogen Derivatives
Authors: Claessens Sven , Verniest Guido , Jacobs Jan , Van Hende Eva , Habonimana Pascal , Nguyen Van Tuyen , Van Puyvelde Luc , De Kimpe Norbert 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mutants of Phenylalanine Dehydrogenase: New Biocatalysts in the Asymmetric Synthesis and Racemic Resolution of Non‐Natural Amino Acids
Authors: Engel Paul C. , Paradisi Francesca , Moynihan Eamonn , Maguire Anita R. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Enantiopure Amino Acids and Amines — Concerted Use of a Biocatalyst and a Chemocatalyst
Authors: Archer Ian , Carr Reuben , Fotheringham Ian , Speight Robert , Turner Nicholas J. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Domino‐Knoevenagel—hetero‐Diels—Alder Reaction and Related Transformations
Authors: Tietze Lutz F. , Rackelmann Nils 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Use of Polymer‐Assisted Solution‐Phase Synthesis and Automation for the High‐Throughput Preparation of Biologically Active Compounds
Authors: Ley Steven V. , Ladlow Mark , Vickerstaffe Emma 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Search for Protein Farnesyltransferase Inhibitors of Microbial Origin: Our Strategy and Results as well as the Results Obtained by Other Groups
Authors: Iwasaki Shigeo , Omura Satoshi 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Chiral Dipeptide Mimics Possessing a Fluoroolefin Moiety: A Relevant Tool for Conformational and Medicinal Studies
Authors: Couve‐Bonnaire Samuel , Cahard Dominique , Pannecoucke Xavier 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Distal Charge Transport in Peptides
Authors: Schlag Edward W. , Sheu Sheh‐Yi , Yang Dah‐Yen , Selzle Heinrich L. , Lin Sheng Hsien 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Protein—Small Molecule Interactions in Neocarzinostatin, the Prototypical Enediyne Chromoprotein Antibiotic
Authors: Baker James R. , Woolfson Derek N. , Muskett Frederick W. , Stoneman Rhys G. , Urbaniak Michael D. , Caddick Stephen 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Multiform Oxide Optical Materials via the Versatile Pechini‐Type Sol—Gel Process — Synthesis and Characteristics
Authors: Lin Jun , Yu Min , Lin Cuikun , Liu Xiaoming 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Terahertz‐Pulsed Spectroscopy and Imaging in Pharmaceutical Setting
Authors: Zeitler J. Axel , Taday Philip F. , Newnham David A. , Pepper Michael , Gordon Keith C. , Rades Thomas 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Metal‐Mediated Multiporphyrin Discrete Assemblies and Their Photoinduced Properties
Authors: Iengo Elisabetta , Scandola Franco , Alessio Enzo 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Direct high‐performance liquid chromatographic separation of the enantiomers of an aromatic amine and four aminoalcohols using polysaccharide chiral stationary phases and acidic additive
Authors: Caccamese Salvatore , Bianca Salvatore , Carter Guy T. 
Published: June 2007

AbstractThe HPLC enantiomeric separation of N‐benzyl‐α‐methyl‐benzylamine, phenylalaninol, tryptophanol, 2 (diphenylhydroxymethyl)pyrrolidine, and isoproterenol was accomplished in the normal‐phase mode using two polysaccharide‐derived chiral stationary phases (CSPs) and various n‐hexane/2‐propanol mobile phases with acidic (TFA) or basic (DEA) additive. The compounds were separated without any derivatization and separation factor range between 2.09 and 1.09 with resolution factor 3.4 and 0.4, respectively. The best separation of the enantiomers of the amine was achieved on amylose tris (3, 5‐dimethylphenylcarbamate) CSP with TFA additive in the mobile phase; in acidic conditions, instead, the best enantioseparation of the aminoalcohols was achieved on cellulose tris (3, 5‐dimethylphenilcarbamate). A long equilibration time of the CSP when switching from an undoped mobile phase to a doped one is required to obtain reproducible results. Chirality 19:647–653, 2007 © 2007 Wiley‐Liss, Inc.
Anwendung von Interferenz‐ und IR‐Mikroskopie zur Charakterisierung und Untersuchung des Stofftransportes in nanoporösen Materialien
Authors: Heinke L. , Chmelik C. , Kortunov P. , Vasenkov S. , Ruthven D. M. , Shah D. B. , Kärger J. 
Published: June 2007

AbstractDie Anwendung der Interferenz‐Mikroskopie bedeutet einen entscheidenden Durchbruch in der Untersuchung des Stofftransports von Gastmolekülen in nanoporösen Wirtsmaterialien. Diese Technik ermöglicht die Beobachtung der zeitaufgelösten intrakristallinen Konzentrationsprofile, die durch eine Änderung des umgebenden Gasdruckes entstehen. Dieser Ansatz wurde zur Untersuchung von Adsorptions‐ und Desorptionsprozessen in verschiedenen Zeolithsystemen verwendet. Die Vorteile dieser Technik, vor allem wenn sie mit Infrarotabsorptionsmessungen kombiniert wird, werden an Hand der experimentellen Resultate des Methanol‐in‐Ferrierit‐Systems illustriert.
Exploring location‐specific assets and exploiting firm‐specific advantages: an integrative perspective on foreign ownership decisions
Authors: Tseng Chiung‐Hui 
Published: June 2007

AbstractExploiting existing assets and exploring new assets are two major and often concurrent forces driving firms to invest abroad. Moving beyond prior attention to their separate effects on foreign ownership decisions, this study examines their integrative impact. I develop hypotheses aligning a set of firm‐specific advantages with asset‐seeking motives, and test these relationships on a sample of Taiwanese overseas investments. I find that wholly‐owned subsidiaries are preferred to joint ventures when multinationals are able to tap into host innovatory dynamism by employing extant technological capabilities and to access local natural resources by leveraging corporate scales. Nonetheless, multinationals face difficulties in deploying marketing knowledge in different contexts and thus are more likely to choose joint ventures for an aggressive foreign market entry. Copyright © 2007 ASAC. Published by John Wiley & Sons, Ltd.
Quantitative Structure Property Relations (QSPR) for Predicting Molar Diamagnetic Susceptibilities, χm, of Inorganic Compounds
Authors: Mu Lai‐Long , He Hong‐Mei , Feng Chang‐Jun 
Published: June 2007

AbstractFor predicting the molar diamagnetic susceptibilities of inorganic compounds, a novel connectivity index mG based on adjacency matrix of molecular graphs and ionic parameter gi was proposed. The gi is defined as gi=(ni0.5−0.91)4·xi0.5/Zi0.5, where Zi, ni, xi are the valence, the outer electronic shell primary quantum number, and the electronegativity of atom i respectively. The good QSPR models for the molar diamagnetic susceptibilities can be constructed from 0G and 1G by using multivariate linear regression (MLR) method and artificial neural network (NN) method. The correlation coefficient r, standard error, and average absolute deviation of the MLR model and NN model are 0.9868, 5.47 cgs, 4.33 cgs, 0.9885, 5.09 cgs and 4.06 cgs, respectively, for the 144 inorganic compounds. The cross‐validation by using the leave‐one‐out method demonstrates that the MLR model is highly reliable from the point of view of statistics. The average absolute deviations of predicted values of the molar diamagnetic susceptibility of other 62 inorganic compounds (test set) are 4.72 cgs and 4.06 cgs for the MLR model and NN model. The results show that the current method is more effective than literature methods for estimating the molar diamagnetic susceptibility of an inorganic compound. Both MLR and NN methods can provide acceptable models for the prediction of the molar diamagnetic susceptibilities. The NN model for the molar diamagnetic susceptibilities appears more reliable than the MLR model.
A New Method for High‐Resolution NMR Spectra in Inhomogeneous Fields with Efficient Solvent Suppression
Authors: Lin Mei‐Jin , Chen Xi , Chen Zhi‐Wei , Chen Zhong 
Published: June 2007

AbstractHigh‐resolution nuclear magnetic resonance (NMR) is one of the most powerful tools for analyzing molecular structures and dynamics. Magnetic field homogeneity is required for conventional high‐resolution spectra. However, there are many chemical and/or biological circumstances where the spatial homogeneities of the magnetic fields are degraded. Intense solvent signal is another obstacle for obtaining high‐resolution spectra, especially in in vivo and in situ NMR spectroscopy. In this paper, a new pulse sequence based on intermolecular multiple quantum coherence (iMQC) was reported. This sequence can effectively remove the effect of magnetic field inhomogeneity and suppress the solvent signal. It can recover the spectral information such as chemical shifts, coupling constants, multiplet patterns, and relative peak areas in inhomogeneous fields. Theoretical analyses and experimental verifications are presented to demonstrate the feasibility of this method.
Accelerated Hydrolysis of p‐Nitrophenyl Picolinate Catalyzed by Metallomicelle Made from a Novel Macrocyclic Polyamine Copper(II) Complex
Authors: Kou Xing‐Ming , Zhao Guo‐Po , Huang Zhong , Tian Yu‐Hua , Meng Xiang‐Guang , Zeng Xian‐Cheng 
Published: June 2007

AbstractA copper(II) complex 1 of a novel macrocyclic polyamine ligand with hydroxylethyl pendant groups, 4,11‐bis(hydroxylethyl)‐5,7,7,12,14,14‐hexamethyl‐1,4,8,11‐tetraazacyclotetradecane (L) has been synthesized and characterized. Rate enhancement for hydrolysis of p‐nitrophenyl picolinate (PNPP) catalyzed by 1 was studied kinetically under Brij35 micellar condition. For comparision, the catalytic activity of corresponding copper(II) complex 2 of non‐substituted macrocyclic polyamine ligand, 5,7,7,12,14,14‐hexamethyl‐1,4,8,11‐tetraaza‐cyclote‐ tradecane (L′) toward the hydrolysis of PNPP was also investigated. The results indicate that the macrocyclic polyamine copper(II) complex 1 effectively catalyzed the hydrolysis of PNPP, and the pendant ligand hydroxyl group or deprotonated pendant ligand hydroxyl group can act as catalytically active species in the reaction. A ternary complex kinetic model involving metal ion, ligand and substrate has been proposed, and the results confirmed the reasonability of such kinetic model.
Synthesis and Bio‐activities of Pyrazolyl or Pyridinyl Substituted Tonghaosu Analogs
Authors: Yin Biao‐Lin , Chen Li , Xu Han‐Hong , Zhang Jian‐Cun , Wu Yu‐Lin 
Published: June 2007

Abstract11 pyrazolyl or pyridinyl substituted tonghaosu analogs were synthesized. Structures of all the new compounds were confirmed by 1H NMR, IR, MS, HREIMS or elemental analysis. Their antifeedant activity against larvae of large white butterfly (Pieris brassicae L.), larvicidal activity toward mosquito (Culex quinquefasciatus Say) and growth control activity toward larvae of Spodoptera litura Fab were examined. Some of them exhibited antifeeding activities comparable to or stronger than tonghaosu Z‐1. Based on the activity data, the preliminary structure‐activity relationship was also discussed, which might be instructive for finding out lead compounds with better bioactivities in the future.
An Efficient Solid Acid Promoted Synthesis of Quinoxaline Derivatives at Room Temperature
Authors: Ahmad Shaabani , Ali Maleki 
Published: June 2007

AbstractQuinoxaline derivatives have been synthesized in a very short time with excellent yields by the condensation of 1,2‐diamines with aliphatic or aromatic 1,2‐dicarbonyl compounds or benzilmonoxime in the presence of silica sulfuric acid as a very inexpensive solid acid catalyst at room temperature. The recovery and reuse of the catalyst are also satisfactory.
An apoptotic molecular network identified by microarray: On the TRAIL to new insights in epithelial ovarian cancer
Authors: Ouellet Véronique , Le Page Cécile , Madore Jason , Guyot Marie‐Claude , Barrès Véronique , Lussier Christian , Tonin Patricia N. , Provencher Diane M. , Mes‐Masson Anne‐Marie 
Published: June 2007

AbstractBACKGROUND.In a previous microarray expression analysis, the authors identified candidate genes that were expressed differentially between ovarian tumors with low malignant potential and invasive serous epithelial ovarian tumors. Among them, the apoptosis‐related candidate genes tumor necrosis factor‐related apoptosis‐inducing ligand (TRAIL), caspase 8 (CASP8), FLICE‐inhibitory protein (FLIP), and cytochrome C (CYC) were identified.METHODS.For the current study, the authors conducted immunohistochemical analyses of a tissue array comprised of 235 serous tumors of different grades and stages to evaluate whether there was differential protein expression for these candidates and for the 4 death cell receptors of Trail: Dr4, Dr5, DcR1, and DcR2.RESULTS.All proteins except DcR1 and DcR2 had significantly differential expression levels between grade 0 tumors (low malignant potential) and grade 2 and 3 tumors. Trail also showed differential expression between grade 0 tumors and grade 1 tumors. When all tumors were compared, the expression levels of Trail, Dr4, Dr5, DcR1, and Flip differed significantly between early‐stage and advanced‐stage disease. High Dr5 expression was associated with a poor prognosis in patients who had invasive tumors and in the subgroup of patients who had grade 3 tumors. Furthermore, the combinations of 2 proteins (Trail and Dr5, DcR2 and Cyc, Flip and Dr5, Flip and DcR2, DcR1 and Dr5 or Dr4 and Flip) revealed an association with patient prognosis.CONCLUSIONS.The identification of new proteins in the initial diagnosis and prognosis of patients with epithelial ovarian cancer may lead to a better understanding of the disease, highlighting new potential therapeutic targets, and may be useful in patient management. Cancer 2007. © 2007 American Cancer Society.
Analysis of prognostic factors in ewing sarcoma family of tumors
Authors: Rodríguez‐Galindo Carlos , Liu Tiebin , Krasin Matthew J. , Wu Jianrong , Billups Catherine A. , Daw Najat C. , Spunt Sheri L. , Rao Bhaskar N. , Santana Victor M. , Navid Fariba 
Published: June 2007

AbstractBACKGROUND.Advances in systemic and local therapies have improved outcomes for patients with the Ewing sarcoma family of tumors (ESFT). As new treatments are developed, a critical review of data from past treatment eras is needed to identify clinically relevant risk groups.METHODS.The authors reviewed the records of 220 patients with ESFT who were treated on protocols at St. Jude Children's Research Hospital from 1979 to 2004. Two treatment eras were defined. Factors predictive of outcome were analyzed to identify distinct risk groups.RESULTS.The median age at diagnosis was 13.7 years (range, 1.1–25.2 years). Metastatic disease was associated with tumors measuring >8 cm (P = .002) and axial location (P = .014). The 5‐year overall survival (OS) estimate (63.5% ± 3.5%) did not appear to differ by protocol. Tumor stage and size were found to be the only independent predictors of outcome. Treatment era and type of local control therapy were found to influence the outcome of patients with localized disease. Four risk groups were defined: favorable risk (age <14 years with localized, nonpelvic tumors), intermediate risk (localized, age ≥14 years, or pelvic tumors), unfavorable‐pulmonary (isolated lung metastases), and unfavorable‐extrapulmonary (extrapulmonary metastases). The 5‐year OS estimates for these groups were 88.1% ± 4.4%, 64.9% ± 5.2%, 53.8% ± 9.4%, and 27.2% ± 7.3%, respectively (P < .001). The incidence of therapy‐related leukemia was significantly higher during the second treatment era, when more intensified regimens were used (6.1% ± 2.7% vs 0% ± 0%; P = .005).CONCLUSIONS.Risk stratification schemes such as this should be used to prospectively evaluate novel risk‐based therapies. Studies of biologic pathways may help to refine this model. Cancer 2007. © 2007 American Cancer Society.
Costs of uncontrolled chemotherapy‐induced nausea and vomiting among working‐age cancer patients receiving highly or moderately emetogenic chemotherapy
Authors: Tina Shih Ya‐Chen , Xu Ying , Elting Linda S. 
Published: June 2007

AbstractBACKGROUND.Chemotherapy‐induced nausea and vomiting (CINV) is among the most feared side effects of cancer treatment. Poorly controlled CINV may lead to additional office visits or emergency room admissions, thus increasing the overall costs of cancer care. The objective of the project was to estimate the societal costs of uncontrolled CINV among working‐age cancer patients.METHODS.The 1997–2002 Health and Productivity Management database, a proprietary database linking medical claims to work loss information, was used. The study population consisted of employees or their spouses who were cancer patients treated with highly or moderately emetogenic chemotherapy regimens. Costs of uncontrolled CINV were estimated by comparing the direct medical costs and indirect costs between those with and without uncontrolled CINV; all costs were normalized as monthly costs and updated to 2006 US dollars. The Wilcoxon Mann‐Whitney test was used to compare the costs differences in univariate analyses, followed by multivariate analyses.RESULTS.In all, 2018 patients were identified; 1771 (88%) received 5‐HT3 receptor antagonists, and uncontrolled CINV was found in 563 (28%). The estimated monthly medical costs associated with uncontrolled CINV were approximately $1300 higher for cancer patients at working ages. Subgroup analysis concluded that indirect costs per patient per month were $433 higher for those in the uncontrolled CINV group.CONCLUSIONS.Despite a prevalent use of the 5‐HT3 receptor antagonists, uncontrolled CINV remained a common and costly problem among cancer patients treated with highly or moderately emetogenic chemotherapy. Cancer 2007. © 2007 American Cancer Society.