bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photo‐Fries Rearrangement of Carbazol‐2‐yl Sulfonates (I): Efficient Tool for the Introduction of Sulfonyl Groups into Polycyclic Aromatic Compounds.
Authors: Crevatin Laura K. , Bonesi Sergio M. , Erra‐Balsells Rosa 
Published: October 2006

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 Convenient Conversion of Pyrazolyl Disulfide to Sulfides by Sodium Dithionite and Synthesis of Sulfoxides.
Authors: Tang Ri‐Yuan , Zhong Ping , Lin Qiu‐Lian 
Published: October 2006

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.
Structure—Activity Studies of Oxazolidinone Analogues as RNA‐Binding Agents.
Authors: Means John A. , Katz Steven , Nayek Abhijit , Anupam Rajaneesh , Hines Jennifer V. , Bergmeier Stephen C. 
Published: October 2006

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 New Solvent System for Efficient Synthesis of 1,2,3‐Triazoles.
Authors: Lee Bo‐Young , Park So Ra , Jeon Heung Bae , Kim Kwan Soo 
Published: October 2006

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, Stereochemistry, and Antimicrobial Evaluation of Substituted Piperidin‐4‐one Oxime Ethers.
Authors: Ramalingan C. , Park Y. T. , Kabilan S. 
Published: October 2006

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 Concise Synthesis of 7‐Chloro‐2‐methylsulfanyl‐thiazolo[4,5‐b]pyridine‐6‐carbonitrile, a Versatile Intermediate for Substituted 6‐Cyanothiazolopyridines.
Authors: Johnson Sigmond G. , Connolly Peter J. , Murray William V. 
Published: October 2006

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 Spiro‐pyridopyridine Analogues by Grubbs′ Catalyst Mediated Alkene and Enyne Metathesis Reaction.
Authors: Majumdar K. C. , Islam R. , Rahaman H. , Roy B. 
Published: October 2006

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 Functionalized Organotrifluoroborates via the 1,3‐Dipolar Cycloaddition of Azides.
Authors: Molander Gary A. , Ham Jungyeob 
Published: October 2006

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 and Spectral Properties of Malononitrile‐Based Merocyanine Dyes.
Authors: Kulinich A. V. , Derevyanko N. A. , Ishchenko A. A. 
Published: October 2006

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.
Monoterpene Constituents from Cistanche tubulosa — Chemical Structures of Kankanosides A—E and Kankanol.
Authors: Xie Haihui , Morikawa Toshio , Matsuda Hisashi , Nakamura Seikou , Muraoka Osamu , Yoshikawa Masayuki 
Published: October 2006

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 Transformations of Higher Terpenoids. Part 14. Heterocyclization Reactions of 15,16,18‐Tricarboxylabdadiene. New Nitrogen‐Containing Diterpenoids.
Authors: Kharitonov Yu. V. , Shul'ts E. E. , Shakirov M. M. , Tolstikov G. A. 
Published: October 2006

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.
Cytotoxic and Antimalarial Prenylated Xanthones from Cratoxylum cochinchinense.
Authors: Laphookhieo Surat , Syers John Keith , Kiattansakul Rattana , Chantrapromma Kan 
Published: October 2006

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 High Performance Heterogeneous Metal Catalysts for Green and Sustainable Chemistry
Authors: Kaneda Kiyotomi , Ebitani Kohki , Mizugaki Tomoo , Mori Kohsuke 
Published: October 2006

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.
Innovative Catalytic Protocols for the Ring‐Closing Friedel—Crafts‐Type Alkylation and Alkenylation of Arenes
Authors: Bandini Marco , Emer Enrico , Tommasi Simona , Umani‐Ronchi Achille 
Published: October 2006

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.
Transition Metal Catalyzed Intramolecular Enyne Cyclization Reaction
Authors: Zhang Z. , Zhu G. , Tong X. , Wang F. , Xie X. , Wang J. , Jiang L. 
Published: October 2006

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 Palladium‐Catalyzed Assembly and Functionalization of Benzo[b]furans
Authors: Cacchi Sandro , Fabrizi Giancarlo , Goggiamani Antonella 
Published: October 2006

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.
Boron‐Containing Chlorins and Tetraazaporphyrins: Synthesis and Cell Uptake of Boronated Pyropheophorbide A Derivatives
Authors: Ratajski Michal , Osterloh Jens , Gabel Detlef 
Published: October 2006

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.
Renewable Resources for the Production of Aromatic Chemicals
Authors: Sariaslani Sima , Van Dyk Tina , Huang Lisa , Gatenby Anthony , Ben‐Bassat Arie 
Published: October 2006

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 atrium effect of website openness on the communication of corporate social responsibility
Authors: Guimarães‐Costa Nuno , e Cunha Miguel Pina 
Published: October 2006

AbstractThis paper applies the image of a Roman atrium to disclosure of CSR activities on company websites, through an examination of the website content of 19 large companies operating in Portugal.The analysis reveals a CSR discourse targeting stakeholders. What is stated is carefully chosen in order to mitigate potential reactions from offended stakeholders, these coming mostly from those areas where their negative impact could be more visible.We conclude that comparison with Roman atria can be made to the extent that (a) websites allow companies to suggest positive images about themselves, (b) their openness forces companies to adopt bi‐focal messages where the target does not always coincide with the message's subject and (c) their visibility and accessibility induce companies to take a position on external events and to seek greater alignment between disclosure and action. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment.
Antitumor effects of a recombinant fowlpox virus expressing Apoptin in vivo and in vitro
Authors: Li Xiao , Jin Ningyi , Mi Zhiqiang , Lian Hai , Sun Lili , Li Xuemei , Zheng Hongling 
Published: October 2006

AbstractApoptin is a chicken anemia virus‐derived, p53‐independent, bcl‐2‐insensitive apoptotic protein with the ability to specifically induce apoptosis in tumor cells. To explore the use of the Apoptin gene in cancer gene therapy, we constructed a recombinant fowlpox virus expressing the Apoptin protein (vFV‐Apoptin) and compared the tumor‐killing activity of the recombinant virus with that of wild‐type fowlpox virus in the human hepatoma cell line HepG2. We found that although cells were somewhat resistant to the basal cytotoxic effect of wild‐type fowlpox virus, infection with vFV‐Apoptin caused a pronounced, additional cytotoxic effect. Furthermore, cell death and disruption of tumor integrity were apparent in the vFV‐Apoptin‐infected cells. We also tested whether fowlpox virus‐mediated expression of Apoptin in tumor cells could stimulate an antitumor effect by injecting aggressive subcutaneous tumors derived from H22 mouse hepatoma cells in C57BL/6 mice with vFV‐Apoptin. We found that fowlpox virus‐mediated intratumoral expression of the Apoptin gene can induce protective and therapeutic antitumor effects and significantly increase survival. Taken together, these data indicate that infection of tumors with fowlpox virus expressing Apoptin inhibits tumor growth, induces apoptosis and may be an effective cancer treatment. © 2006 Wiley‐Liss, Inc.
Aquatic Coleoptera Distribution and Environmental Relationships in a Large Patagonian River
Authors: Miserendino María Laura , Archangelsky Miguel 
Published: October 2006

AbstractThe benthic coleopteran assemblages of the Chubut River basin were studied in order to assess the main factors affecting species composition and distribution along the upper, middle and lower catchments. A total of 13 sampling sites were selected and sampled seasonally. Eight taxa and 1,601 individuals were collected during the study. Richness was higher in the main channel of Chubut River at the upper basin than at the middle basin. Beetles were completely absent at the lower basin. Mean monthly density per sites varied from 0 to 85 ind m–2. Stethelmis kaszabi had a more restricted distribution whereas Hemiosus dejeanii, Austrelmis sp. and Austrolimnius spp. were more frequent and abundant. Austrelmis sp. appears as the most tolerant species, especially to higher TSS, ammonia, and conductivity values. Luchoelmis cekalovici was absent in stations associated with urban areas. A Canonical Correspondence Analysis shows that conductivity, total suspended solids, wet width, water temperature and pH were the most important variables structuring beetle assemblages. Land use related variables such as NH4, TP, and NO3 were less important but still significant. An increase in TSS affected negatively the coleopteran community; this could be related to both hydrogeological characteristics and agricultural activities (including overgrazing).This is the first approach to the knowledge of the ecological range of distribution of the coleopteran species in Patagonian rivers. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
The Diet of the Brown Trout Salmo trutta (L.) during the Reproductive Period: Size‐Related and Sexual Effects
Authors: Montori Albert , Tierno De Figueroa J. Manuel , Santos Xavier 
Published: October 2006

AbstractWe investigated the autumnal diet of the brown trout Salmo trutta, in a Prepyrenean stream (NW Iberian Peninsula) focusing on intraspecific dietary differences related to size and sex. The diet of trout included 18 types of prey, with Plecoptera and Ephemeroptera nymphs and Diptera larvae as the most consumed taxa. Large trout ate larger prey, than did small trout, and also increased the consumption of terrestrial‐surface prey with respect to aquatic‐benthic prey. As terrestrial‐surface preys were larger than aquatic‐benthic prey, the size‐related differences in the diet of trout were related to gape‐limitations. Although male and female trout did not differ in size, we found that males foraged on a more diverse type of prey than females, probably owing to male territoriality during the reproductive period. This study provides new evidence of dietary plasticity in the brown trout and confirms the importance of local dietary studies to better understand factors which drive trophic ecology of predators. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Differences in properties of myofibrillar proteins from bovine semitendinosus muscle after hydrostatic pressure or heat treatment
Authors: Lee Eun‐Jung , Kim Yun‐Ji , Lee Nam‐Hyouck , Hong Seok‐In , Yamamoto Katsuhiro 
Published: October 2006

AbstractHydrostatic pressure (HP) and heat treatments of myofibrillar proteins have both been shown to induce protein denaturation, but different gel formation properties result from these treatments. To characterise differences in the properties of proteins resulting from HP or heat treatment, Ca‐ and Mg‐ATPase activities (ATP, adenosine triphosphate) and protein solubility in 0.1 and 0.6 mol L−1 KCl buffers (pH 7) were evaluated in this study. The inactivation rate of Ca‐ATPase of myofibrillar proteins (Mf) induced by HP was slower than that of Mg‐ATPase at each of the tested pressures. However, the inactivation rate of Ca‐ATPase induced by heating was faster than that of Mg‐ATPase at each of the tested temperatures. The level of soluble proteins in Mf suspension induced by HP in 0.1 mol L−1 KCl buffer increased with increasing pressure up to 400 MPa and then decreased slightly at 500 MPa. However, the level of soluble proteins in Mf suspension induced by heat treatment in 0.1 mol L−1 KCl buffer increased with increasing temperature up to 55°C. According to the results of sodium dodecyl sulfate polyacrylamide gel electrophoresis, the levels of soluble myosin heavy chain and actin in Mf suspension induced by HP in 0.6 mol L−1 KCl buffer decreased simultaneously at pressures higher than 300 MPa. The level of soluble MHC in 0.6 mol L−1 KCl buffer decreased gradually with increasing temperature, but there were no changes in the level of soluble actin in 0.6 mol L−1 KCl buffer with increasing temperature up to 50°C. These results showed that the mechanism of HP‐induced protein denaturation was different from the mechanism underlying heat‐induced protein denaturation. Copyright © 2006 Society of Chemical Industry
Identification of cherry tomatoes growth origin by means of magnetic resonance imaging
Authors: Sequi Paolo , Dell'Abate Maria Teresa , Valentini Massimiliano 
Published: October 2006

AbstractMagnetic resonance imaging (MRI) spectroscopy is a promising non‐invasive and non‐destructive analytical technique in food science, since it offers the opportunity of studying vegetables and fruits in their wholeness without any manipulation. The aim of this preliminary study was to demonstrate the possibility of assessing unambiguously the place of origin of fresh cherry tomatoes by means of MRI experiments. The innovative approach has been successfully used to distinguish PGI (Protected Geographical Indication) cherry tomatoes from non‐PGI ones, as well as cv. Naomi from cv. Shiren samples. The method determines informative physical and morphological parameters, transverse relaxation times and thicknesses, respectively, which can be combined into four empirical equations; two of them are used to determine the cultivated variety and the other two to assess the place of origin. This approach has successfully recognize the cultivated variety of c. 90% of the analyzed samples and the geographical origin of c. 80% of the investigated cherry tomatoes. Copyright © 2006 Society of Chemical Industry
Antioxidant and semicarbazide‐sensitive amine oxidase inhibitory activities of alginic acid hydroxamates
Authors: Liu Der‐Zen , Wu Wen‐Chung , Liang Hong‐Jen , Hou Wen‐Chi 
Published: October 2006

AbstractThe commercial polysaccharides of alginic acid (medium (3500 cps, 2% solution) and low (250 cps, 2% solution) viscosities) were esterified with acidic methanol (1 mmol L−1 HCl) at 4 °C with gentle stirring for 5 days to obtain methyl esters of medium‐viscosity alginic acid (ME‐MVA) and low‐viscosity alginic acid (ME‐LVA). These ME‐MVA and ME‐LVA were reacted with alkaline hydroxylamine to obtain medium‐viscosity alginic acid hydroxamates (MVA‐NHOH) and LVA‐NHOH. The percentages of hydroxamic acid content in MVA‐NHOH and LVA‐NHOH were calculated as 25% and 20%, respectively. The hydroxamate derivatives of alginic acid were used to test the antioxidant and semicarbazide‐sensitive amine oxidase (SSAO) inhibitory activities in comparison with original materials (MVA and LVA). The half‐inhibition concentrations, IC50, of scavenging activity against 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) were 24.5 and 29.8 µg mL−1 for MVA‐NHOH and LVA‐NHOH, respectively. However, few scavenging activities of the MVA and LVA were found at the same concentrations. The IC50 of the positive control of butylated hydroxytoluene was 5 µg mL−1. The scavenging activity of DPPH radical was pH‐dependent, and the optimal pH for both of MVA‐NHOH and LVA‐NHOH was the Tris‐HCl buffer (pH 7.9). Using electron spin resonance (ESR) to detect the activity of scavenging hydroxyl radicals, both alginic acid hydroxamates showed dose‐dependent scavenging activities, and the IC50 was 90 and 92 µg mL−1, respectively, for MVA‐NHOH and LVA‐NHOH. Both alginic acid hydroxamates also exhibited protection against hydroxyl radical‐mediated DNA damage. Both MVA‐NHOH and LVA‐NHOH showed dose‐dependent inhibitory activities against bovine SSAO (2.53 units); the IC50 was 0.16 and 0.09 µg mL−1, respectively, for MVA‐NHOH and LVA‐NHOH, compared with 3.81 µg mL−1 of semicarbazide (positive controls). Amine oxidase activity staining also revealed that both MVA‐NHOH and LVA‐NHOH exhibited SSAO inhibitory activities. Both MVA‐NHOH and LVA‐NHOH showed mixed non‐competitive inhibition against bovine SSAO. It was found that the V′max value was reduced and the K′m value was either increased (added MVA‐NHOH, 0.05 µg mL−1) or reduced (added LVA‐NHOH, 0.11 µg mL−1) in the presence of alginic acid hydroxamate. Copyright © 2006 Society of Chemical Industry
Preliminary study on the use of near‐infrared reflectance spectroscopy to assess nitrogen content of undried wheat plants
Authors: Morón Alejandro , García Adriana , Sawchik Jorge , Cozzolino Daniel 
Published: October 2006

AbstractNear‐infrared reflectance (NIR) spectroscopy combined with chemometrics was used to assess nitrogen (N) and dry matter content (DM) and chlorophyll in whole‐wheat plant (Triticum aestivum L). Whole‐wheat plant samples (n = 245) were analysed by reference method and by visible and NIR spectroscopy, in fresh (n = 182) and dry (n = 63) presentations, respectively. Calibration equations were developed using partial least squares (PLS) and validated using full cross‐validation (leave‐one‐out method). Coefficient of determination in calibration (R2CAL) and the standard error of cross‐validation (SECV) for N content in fresh sample presentation, after second derivative, were 0.89 (SECV: 0.64%), 0.86 (SECV: 0.66%) and 0.82 (SECV: 0.74%) using the visible + NIR, NIR and visible wavelength regions, respectively. Dry sample presentation gave better R2CAL and SECV for N compared with fresh presentation (R2CAL > 0.90, SECV < 0.20%) using visible + NIR. The results demonstrated that NIR is a suitable method to assess N concentration in wheat plant using fresh samples (unground and undried). Copyright © 2006 Society of Chemical Industry
Interspecies nuclear transfer of Tibetan antelope using caprine oocyte as recipient
Authors: Zhao Zhen‐Jun , Li Rui‐Chang , Cao Heng‐Hua , Zhang Quan‐Jun , Jiang Man‐Xi , OuYang Ying‐Chun , Nan Chang‐Long , Lei Zi‐Li , Song Xiang‐Fen , Sun Qing‐Yuan , Chen Da‐Yuan 
Published: October 2006

AbstractInterspecies nuclear transfer is an invalulable tool for studying nucleus–cytoplasm interactions; and at the same time, it provides a possible alternative to clone endangered animals whose oocytes are difficult to obtain. In the present study, we investigated the possibility of cloning Tibetan antelope embryos using abattoir‐derived caprine oocytes as recipients. Effects of culture conditions, enucleation timing, and donor cell passages on the in vitro development of Tibetan antelope‐goat cloned embryos were studied. Maternal to zygotic transition timing of interspecies Tibetan antelope embryos was also investigated using two types of cloned embryos, Tibetan antelope‐rabbit and Tibetan antelope‐goat embryos. Our results indicate that: (1) goat oocyte is able to reprogram somatic cells of different genus and supports development to blastocyst in vitro. (2) Coculture system supported the development of Tibetan antelope‐goat embryos to blastocyst rate stage (4.0%), while CR1aa alone did not. (3) When MII phase enucleated caprine cytoplast and TII phase enucleated caprine cytoplast were used as recipients, the fusion rate and blastocyst rate of hybrid embryos were not statistically different (73.9% vs. 67.4%; 4.0% vs. 1.1%). (4) When donor cells at 3–8 passages were used, 2.9% hybrid embryos developed to blastocysts, while none developed to blastocysts when cells at 10–17 passages were used. (5) There may be a morula‐to‐blastocyst block for Tibetan antelope‐goat, while there may be an 8‐ to 16‐cell block for Tibetan antelope‐rabbit embryos. Mol. Reprod. Dev. 74: 412–419, 2007. © 2006 Wiley‐Liss, Inc.
Heat stress‐induced apoptosis in porcine in vitro fertilized and parthenogenetic preimplantation‐stage embryos
Authors: Isom S. Clay , Prather Randall S. , Rucker Edmund B. 
Published: October 2006

AbstractDecades worth of research have consistently shown the adverse effects of elevated temperatures on reproductive parameters of livestock species. The objective of this study was to evaluate the developmental and apoptotic responses of porcine in vitro fertilized (IVF) and parthenogenetically activated (PA) embryos heat stressed at the late 1‐cell stage. Embryos were heat stressed (HS) at 42°C for 9 hr starting 22 hr after insemination or artificial activation stimulus. Non heat‐stressed (NHS) control embryos were maintained at 39°C for the duration of the experiments. TUNEL staining on Day 5 of development demonstrated that heat stress elicited a significant apoptotic response in IVF embryos (45.6% of HS embryos and 26.7% of NHS embryos were apoptotic;P < 0.05), but not in PA embryos (51.1% and 39.9% for HS and NHS embryos, respectively;P > 0.1). And, while IVF embryos were highly susceptible to heat‐induced developmental perturbations (20.6% and 8.8% development to blastocyst for NHS and HS embryos, respectively;P < 0.05), elevated temperatures did not affect blastocyst rates in PA embryos (22.2% for NHS PA embryos and 21.2% for HS PA embryos;P > 0.1). These findings indicate that, as in other systems studied, IVF pig embryos are directly affected adversely by heat stress conditions. Parthenogenetic embryos, though, appear to be surprisingly tolerant of the elevated temperatures. The differences between IVF and PA embryos in their response to heat stress warrants further investigation. Mol. Reprod. Dev. 74: 574–581, 2007. © 2006 Wiley‐Liss, Inc.