bluuebunny/crossref_metadata_2025 huggingface dataset:
Surface modification of henequen (Agave fourcroydes) fibers by ultraviolet curing with 2‐hydroxyethylacrylate and ethylacrylate: Effect of additives on degradable properties
Authors: Mizanur Rahman M. , Sarwaruddin Chowdhury A. M. , Jahirul Islam M. , Khan Mubarak A.
Published: August 2006

Henequen fibers were grafted with a double impregnating monomer 2‐hydroxyethylacrylate (HEA) and ethylacrylate (EA) to improve the physicomechanical properties. The fibers soaked in different concentration (1–10%) of monomer + MeOH solution along with photoinitiator Irgacure 907 [2%] were cured under ultraviolet (UV) lamp at different UV radiation intensities (2–14 passes). Concentration of monomer at different radiation intensities was optimized with extent of mechanical properties such as polymer loading, tensile strength, and elongation at break. Enhanced tensile strength (268%) and elongation at break (110%) were achieved by the polymer treated fibers than untreated virgin fibers. We observed that, henequen fibers treated by 3% EA showed better physico‐mechanical properties than those treated by 5% HEA. The tensile properties of henequen fibers treated by 3% EA can be enhanced by adding aloxysilane; 3‐(trimethoxysilyl) propylmethacrylate additives with bulk monomer EA (3%). The degradability of the treated and untreated fibers due to accelerated weathering were also studied and it has been found that surface modified henequen fibers produced more resistivity towards different weathering conditions than untreated fibers. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4000–4006, 2006
Assessing biodegradability and mechanical, thermal, and morphological properties of an acrylic acid‐modified poly(3‐hydroxybutyric acid)/wood flours biocomposite
Authors: Wu Chin‐San
Published: August 2006

A poly(3‐hydroxybutyric acid) and wood flours (PHB/wood flours) composite and an acrylic acid‐grafted PHB/wood flours composite were characterized and their properties were examined and compared. Mechanical properties of PHB became significantly worse when it was blended with wood flours, due to the poor compatibility between the two phases. Much better dispersion and homogeneity of wood flours in the polymer matrix was obtained when PHB‐g‐acrylic acid (AA) was used in place of PHB in the composite. Improved mechanical and thermal properties of the PHB‐g‐AA/wood flours composite, notably an increase in tensile strength at breakpoint, evidenced its superiority to the PHB/wood flours composite. Furthermore, PHB‐g‐AA/wood flours composites were more easily processed because of their lower melt viscosity. Under soil and enzymatic environments, weight loss data indicated that both composites were more biodegradable with higher wood flours content. A reduction in tensile strength at break after exposure to soil and enzymatic environments was also observed in both blends, especially at high wood flours content. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3565–3574, 2006
Synthesis of novel phosphorous‐containing biphenol, 2‐(5, 5‐dimethyl‐4‐phenyl‐2‐oxy‐1,3,2‐dioxaphosphorin‐6‐yl)‐1,4‐benzenediol and its application as flame‐retardant in epoxy resin
Authors: Xia Xin‐Nian , Lu Yan‐Bing , Zhou Xiao , Xiong Yuan‐Qin , Zhang Xiao‐Hua , Xu Wei‐Jian
Published: August 2006

A novel phosphorous‐containing biphenol, 2‐(5,5‐dimethyl‐4‐phenyl‐2‐oxy‐1,3,2‐dioxaphosphorin‐6‐yl)‐ 1,4‐benzenediol (DPODB), was prepared by the addition reaction between 5,5‐dimethyl‐4‐phenyl‐2‐oxy‐1,3,2‐dioxaphosphorinane phosphonate (DPODP) and p‐benzoquinone (BQ). The compound (DPODB) was used as a reactive flame retardant in o‐cresol formaldehyde novolac epoxy resin (CNE) for electronic application. The structure of DPODB was confirmed by FTIR and NMR spectra. Thermal properties of cured epoxy resin were studied using differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The flame retardancy of cured epoxy resins was tested by UL‐94 vertical test and achieved UL‐94 vertical tests of V‐0 grade (nonflammable). © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3842–3847, 2006
Direct synthesis and characterization of crosslinked polysiloxanes via anionic ring‐opening copolymerization with octaisobutyl‐polyhedral oligomeric silsesquioxane and octamethylcyclotetrasiloxane
Authors: Li Hongying , Zhang Junying , Xu Riwei , Yu Dingsheng
Published: August 2006

The crosslinked polysiloxanes were directly synthesized by anionic ring‐opening copolymerization of octaisobutyl‐polyhedral oligomeric silsesquioxane (POSS) as a multifunctional monomer with octamethylcyclotetrasiloxane (D4) under base catalysts such as potassium hydroxide (KOH) or tetramethylammonium hydroxide (Me4 NOH) siloxanolate. The mechanism of anionic ring‐opening copolymerization of octaisobutyl‐POSS and D4 was discussed and the influences of the polar additive N,N‐dimethylacetamide on gelation time at different temperatures were investigated. The results of gel content and swelling ratio, GPC, solid‐state 29Si and 13C NMR, FTIR, XRD show that octaisobutyl‐POSS is reacted and most of the product is crosslinked. The DSC and TG results indicate that the crosslinked polysiloxanes exhibit distinct glass transition temperatures (Tg) and excellent thermal stability. Compared to that under KOH siloxanolate, the crosslinked polysiloxane synthesized with Me4NOH siloxanolate has better preferable thermal stability. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3848–3856, 2006
Folate concentrations and folic acid supplementation among women in their first trimester of pregnancy in a rural area with a high prevalence of neural tube defects in Shanxi, China
Authors: Zhang Le , Ren Aiguo , Li Zhiwen , Hao Ling , Tian Yihua , Li Zhu
Published: August 2006

BACKGROUND: Although an information campaign concerning periconceptional folic acid supplementation was launched in 1998 in Shanxi Province, China, the prevalence of neural tube defects in rural areas was reported as high as 140 per 10,000 births in 2002. The blood folate concentrations and the practice of folic acid supplementation among pregnant women in rural areas of the province are described. METHODS: A total of 483 pregnant women (mean gestation, 8.1 weeks) in a rural area of Shanxi were interviewed. Nonfasting blood samples and information on folic acid supplementation were collected. Folate concentrations in plasma and erythrocytes were determined by a microbiological assay. RESULTS: The mean concentrations of plasma and erythrocyte folate for pregnant women was 10.4 nmol/liter and 375.8 nmol/liter, respectively. Deficiencies of plasma and erythrocyte folate were observed in 20.9% and 47.6% of women, respectively. Seasonal variations were noted in the prevalence of folate deficiency, with significantly lower plasma folate concentrations in spring and summer and lower erythrocyte folate concentrations in seasons other than summer. Among pregnant women, <10% reported having taken or currently taking folic acid, and virtually no women (0.6%) took folic acid as recommended. CONCLUSIONS: Women in rural areas had low plasma and erythrocyte folate levels, and folate deficiency was highly prevalent in the area. Few women followed the recommendations regarding folic acid supplementation, and the information campaign in Shanxi was unsuccessful. These findings suggest the urgent need for combined strategies in rural areas to fortify grain with folic acid and promote folic acid supplements for childbearing‐age women. Birth Defects Research (Part A) 76:461–466, 2006. © 2006 Wiley‐Liss, Inc.
Chick embryos exposed to trichloroethylene in an ex ovo culture model show selective defects in early endocardial cushion tissue formation
Authors: Mishima Noboru , Hoffman Stanley , Hill Elizabeth G. , Krug Edward L.
Published: August 2006

BACKGROUND: Formation of the primitive heart is a critical step for establishing a competent circulatory system necessary for continued morphogenesis, and as such has significant potential as a target for environmental insult. The goal of this study was to identify the initial cellular events that precede more superficially observable abnormalities resulting from exposing early chick embryos to trichloroethylene (TCE). METHODS: A whole embryo culture method was used to assess the susceptibility of endocardial epithelial‐mesenchymal transformation in the early chick heart to TCE. This method has the benefits of maintaining the anatomical relationships of developing tissues and organs, instantaneously exposing precisely staged embryos to quantifiable levels of TCE in a protein‐free medium, and the ability to directly monitor developmental morphology. RESULTS: A minority of embryos (Hamburger and Hamilton [HH] stage 13–14) exposed to TCE (10–80 ppm) were not viable after 24 hr in culture and exhibited a variety of gross malformations in a dose‐dependent fashion. However, the majority of treated embryos remained viable and developed into HH stage 17 embryos that were superficially indistinguishable from vehicle‐treated controls. Further analysis of the hearts of these superficially normal embryos by whole‐mount confocal microscopy revealed selective reduction in the number of atrioventricular canal mesenchymal cells. Additionally, those mesenchymal cells that did develop migrated abnormally as long thin cords of adherent cells. CONCLUSIONS: The regional selectivity of these effects in the chick heart suggests a critical window of susceptibility to TCE in the epithelial‐mesenchymal transformation of atrioventricular canal endocardium. Birth Defects Research (Part A) 76:517–527, 2006. Published 2006 Wiley‐Liss, Inc.
Crystal Structure, Magnetic Susceptibility and Moessbauer Spectroscopy of the Mixed‐Valence Iron Phosphate Na1/2Cu4/3Fe2(PO4)3.
Authors: Hidouri Mourad , Lajmi Besma , Wattiaux Alain , Fournes Leopold , Darriet Jacques , Amara Mongi B.
Published: August 2006

ChemInform 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.
Nuclear and Magnetic Structures and Magnetic Properties of the Layered Cobalt Hydroxysulfate Co5(OH)6(SO4)2 (H2O)4 and Its Deuterated Analogue, Co5(OD)6(SO4)2 (D2O)4.
Authors: Ben Salah Mohsen , Vilminot Serge , Andre Gilles , Richard‐Plouet Mireille , Mhiri Tahar , Takagi Seishi , Kurmoo Mohamedally
Published: August 2006

ChemInform 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.
Neutron Diffraction Study and Magnetotransport Properties of Stoichiometric CaMoO3 Perovskite Prepared by a Soft‐Chemistry Route.
Authors: de la Calle C. , Alonso J. A. , Garcia‐Hernandez M. , Pomjakushin V.
Published: August 2006

ChemInform 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 Novel Microwave Dielectric Ceramic Ca2Zn4Ti16O38: Preparation and Dielectric Properties.
Authors: Zhao Fei , Yue Zhenxing , Pei Jing , Gui Zhilun , Li Longtu
Published: August 2006

ChemInform 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.
Activation of Oxygen on Gold/Alumina Catalysts: In situ High‐Energy‐Resolution Fluorescence and Time‐Resolved X‐Ray Spectroscopy.
Authors: van Bokhoven Jeroen A. , Louis Catherine , Miller Jeffrey T. , Tromp Moniek , Safonova Olga V. , Glatzel Pieter
Published: August 2006

ChemInform 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 Crystal Structure of MgB12Si2 — The First Ternary Compound in the System B/Mg/Si.
Authors: Ludwig Thilo , Hillebrecht Harald
Published: August 2006

ChemInform 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.
Syntheses, Crystal Structures and Characterizations of BaZn(SeO3)2 and BaZn(TeO3)Cl2.
Authors: Jiang Hai‐Long , Feng Mei‐Ling , Mao Jiang‐Gao
Published: August 2006

ChemInform 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 Dendrimer‐Supported Prolinols and Their Application in Enantioselective Reduction of Ketones.
Authors: Wang Guang‐yin , Liu Xin‐yuan , Zhao Gang
Published: August 2006

ChemInform 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 Application of 3,3′‐Diarylmethyl BINOLs.
Authors: Zhang Yi‐Li , Zhang Feng , Tang Wei‐Jun , Wu Qing‐Lai , Fan Qing‐Hua
Published: August 2006

ChemInform 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 Novel Thiazole and Pyrrolothiadiazine Derivatives from Aldehyde Thiosemicarbazones.
Authors: Gomaa Mohsen A.‐M. , Hassan Alaa A. , Shehatta Hamdy S.
Published: August 2006

ChemInform 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 Convenient Synthesis of Propargylic Fluorohydrins and 2,5‐Disubstituted Furans from Fluoropropargyl Chloride.
Authors: Xu Bo , Hammond Gerald B.
Published: August 2006

ChemInform 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 Aryl Ketones or Ketimines by Palladium‐Catalyzed Arene C—H Addition to Nitriles.
Authors: Zhou Chengxiang , Larock Richard C.
Published: August 2006

ChemInform 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.
Single‐Isomer Tetrasubstituted Olefins from Regioselective and Stereospecific Palladium‐Catalyzed Coupling of β‐Chloro‐α‐iodo‐α,β‐unsaturated Esters.
Authors: Lemay Alison B. , Vulic Katarina S. , Ogilvie William W.
Published: August 2006

ChemInform 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.
Nucleophilic Addition to (3‐Methylpentadienyl)iron(1+) Cations: Counterion Control of Regioselectivity; Application to the Enantioselective Synthesis of 4,5‐Disubstituted Cyclohexenones.
Authors: Chaudhury Subhabrata , Donaldson William A.
Published: August 2006

ChemInform 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.
An Efficient Stereoselective Preparation of cis‐Perfluoroalkenylzinc Reagents [(E)‐RFCF=CFZnCl] by the Metalation of 1H, 1H‐Perfluoroalkanes and Their Derivatization to cis‐1‐Arylperfluoroalkenes [(Z)‐RFCF=CFAr].
Authors: Raghavanpillai Anilkumar , Burton Donald J.
Published: August 2006

ChemInform 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.
An Efficient Ir(III) Catalyst for the Asymmetric Transfer Hydrogenation of Ketones in Neat Water.
Authors: Li Xiaohong , Blacker John , Houson Ian , Wu Xiaofeng , Xiao Jianliang
Published: August 2006

ChemInform 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.
Practical Synthesis of Amides from in situ Generated Copper(I) Acetylides and Sulfonyl Azides.
Authors: Cassidy Michael P. , Raushel Jessica , Fokin Valery V.
Published: August 2006

ChemInform 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.
New Phosphine‐Functionalized N‐Heterocyclic Carbene Ligands for Palladium‐Catalyzed Hydroarylation Reaction.
Authors: Zhong Jun , Xie Jian‐Hua , Wang Ai‐E , Zhang Wei , Zhou Qi‐Lin
Published: August 2006

ChemInform 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 Novel Example of Vinylic SRN1: Reactions of 3,3‐Difluoro‐1‐iodo‐2‐phenylcyclopropene with Thiolate Ions.
Authors: Zhou Ding‐Ying , Dou Hong‐Yan , Zhao Cheng‐Xue , Chen Qing‐Yun
Published: August 2006

ChemInform 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 Novel gem‐Difluorinatedcyclopropane Hybrids: Applications for DNA Cleavage Agents Switched by Photo Irradiation.
Authors: Ninomiya Keiko , Tanimoto Kunihiko , Ishida Nanae , Horii Daisuke , Sisido Masahiko , Itoh Toshiyuki
Published: August 2006

ChemInform 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.
Stereoselective Synthesis and Semiempirical Studies of Spiro Bridgehead Bicyclic N‐Heterocycles via 1,3‐Dipolar Cycloaddition Reactions of Azomethine Ylides.
Authors: Pardasani R. T. , Pardasani P. , Jain A. , Arora K.
Published: August 2006

ChemInform 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.
Preparation, Antimicrobial Activity, and Toxicity of 2‐Amino‐4‐arylthiazole Derivatives.
Authors: Morales‐Bonilla Pedro , Perez‐Cardena Andrea , Quintero‐Marmol Esther , Arias‐Tellez Jose Luis , Mena‐Rejon Gonzalo J.
Published: August 2006

ChemInform 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.
Utilization of α‐Halocarbonyl Compounds in the Synthesis of Thiazole, Thiadiazole, and Thiophene Derivatives.
Authors: Abdel‐Latif Ehab , Bondock Samir
Published: August 2006

ChemInform 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 and Synthesis of Selective Keto‐1,2,4‐oxadiazole‐based Tryptase Inhibitors.
Authors: Palmer James T. , Rydzewski Robert M. , Mendonca Rohan V. , Sperandio David , Spencer Jeffrey R. , Hirschbein Bernard L. , Lohmann Julia , Beltman Jeri , Nguyen Margaret , Liu Liang
Published: August 2006

ChemInform 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 Structure—Activity Studies of Antibacterial Oxazolidinones Containing Dihydrothiopyran or Dihydrothiazine C‐Rings.
Authors: Renslo Adam R. , Luehr Gary W. , Lam Stuart , Westlund Neil E. , Gomez Marcela , Hackbarth Corrine J. , Patel Dinesh V. , Gordeev Mikhail F.
Published: August 2006

ChemInform 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.
N‐Arylation of Pyridin‐2(1H)‐ones with Pentavalent Organobismuth Reagents under Copper‐Free Conditions.
Authors: Ikegai Kazuhiro , Nagata Yuzo , Mukaiyama Teruaki
Published: August 2006

ChemInform 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.
Rapid and Cleaner Synthesis of 1,4‐Dihydropyridines in Aqueous Medium.
Authors: Sivamurugan V. , Vinu A. , Palanichamy M. , Murugesan V.
Published: August 2006

ChemInform 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.
Lactam Synthesis via the Intramolecular Hydroamidation of Alkynes Catalyzed by Palladium Complexes.
Authors: Patil Nitin T. , Huo Zhibao , Bajracharya Gan B. , Yamamoto Yoshinori
Published: August 2006

ChemInform 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.
Syntheses of Ring‐Fluorinated Isoquinolines and Quinolines via Intramolecular Substitution: Cyclization of 1,1‐Difluoro‐1‐alkenes Bearing a Sulfonamide Moiety.
Authors: Ichikawa Junji , Sakoda Kotaro , Moriyama Hiroko , Wada Yukinori
Published: August 2006

ChemInform 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.
Beckmann Rearrangement Using Indium(III) Chloride: Synthesis of Substituted Oxazoloquinolines from the Corresponding Ketoximes of 3‐Acyl‐1H‐quinolin‐4‐ones.
Authors: Yoo Kwang Ho , Choi Eun Bok , Lee Hyeon Kyu , Yeon Guy Hwan , Yang Hee Cheol , Pak Chwang Siek
Published: August 2006

ChemInform 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.
Development of N‐2,4‐Pyrimidine‐N‐phenyl‐N′‐phenyl Ureas as Inhibitors of Tumor Necrosis Factor Alpha (TNF‐α) Synthesis. Part 1.
Authors: Brugel Todd A. , et al. et al.
Published: August 2006

ChemInform 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.
An Expedient Synthesis of Novel, Fused Pyrimido[4,5‐d]pyrimidine and Pyrimido[5,4‐e][1,2,4]triazolo[4,3‐c]pyrimidine Analogues from 4‐Amino‐2,6‐dichloropyrimidine.
Authors: Sharma Pratibha , Kumar Ashok , Rane Nilesh
Published: August 2006

ChemInform 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.
Nanoflow Microreactor for Dramatic Increases not only in Reactivity but also in Selectivity: Baeyer—Villiger Oxidation by Aqueous Hydrogen Peroxide Using Lowest Concentration of a Fluorous Lanthanoid Catalyst.
Authors: Mikami Koichi , Yamanaka Masahiro , Islam Md. Nazrul , Tonoi Takayuki , Itoh Yoshimitsu , Shinoda Masaki , Kudo Kenichi
Published: August 2006

ChemInform 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.
New Photosensitizer Cyanine Dyes: Synthesis and Properties.
Authors: Shindy H. A. , El‐Maghraby M. A. , Eissa F. M.
Published: August 2006

ChemInform 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 Tyrosine Phosphatase 1B Inhibitory Activity of Triterpenes Isolated from Astilbe koreana.
Authors: Na MinKyun , Cui Long , Min Byung Sun , Bae KiHwan , Yoo Jae Kuk , Kim Bo Yeon , Oh Won Keun , Ahn Jong Seog
Published: August 2006

ChemInform 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.
Evaluation of Possible Intramolecular [4 + 2] Cycloaddition Routes for Assembling the Central Tetracyclic Core of the Potent Marine Antiinflammatory Agent Mangicol A (I).
Authors: Pichlmair Stefan , de Lera Ruiz Manuel , Basu Kallol , Paquette Leo A.
Published: August 2006

ChemInform 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.
Total Synthesis of (.+‐.)‐Grimaldone, Epigrimaldone and α‐Cuparenones.
Authors: Srikrishna A. , Ramachary D. B.
Published: August 2006

ChemInform 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.
FR209602 and Related Compounds, Novel Antifungal Lipopeptides from Coleophoma crateriformis No. 738. Part 1. Taxonomy, Fermentation, Isolation and Physico‐Chemical Properties.
Authors: Kanasaki Ryuichi , Sakamoto Kazutoshi , Hashimoto Michizane , Takase Shigehiro , Tsurumi Yasuhisa , Fujie Akihiko , Hino Motohiro , Hashimoto Seiji , Hori Yasuhiro
Published: August 2006

ChemInform 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.
FR220897 and FR220899, Novel Antifungal Lipopeptides from Coleophoma empetri Nr. 14573.
Authors: Kanasaki Ryuichi , et al. et al.
Published: August 2006

ChemInform 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.
An Efficient Synthetic Method for (Z)‐Fluoroalkene Dipeptide Isosteres: Application to the Synthesis of the Dipeptide Isostere of Sta‐Ala.
Authors: Nakamura Yuko , Okada Midori , Koura Minoru , Tojo Manabu , Saito Akio , Sato Azusa , Taguchi Takeo
Published: August 2006

ChemInform 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.
Carboxy Derivatized Glucosamine Is a Potent Inhibitor of Matrix Metalloproteinase‐9 in HT1080 Cells.
Authors: Mendis Eresha , Kim Moon‐Moo , Rajapakse Niranjan , Kim Se‐Kwon
Published: August 2006

ChemInform 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.
New Class of Nucleophiles for Palladium‐Catalyzed Asymmetric Allylic Alkylation. Total Synthesis of Agelastatin A (I).
Authors: Trost Barry M. , Dong Guangbin
Published: August 2006

ChemInform 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 Pyrimidine—Pyrazolone Nucleoside Chimera with Potent in vitro anti‐Orthopoxvirus Activity.
Authors: Fan Xuesen , Zhang Xinying , Zhou Longhu , Keith Kathy A. , Kern Earl R. , Torrence Paul F.
Published: August 2006

ChemInform 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 Synthesis of 3′‐α‐Fluoro‐2′,3′‐dideoxyadenosine via a Bromine Rearrangement During Fluorination with MOST Reagent.
Authors: Katayama Satoshi , Takamatsu Satoshi , Naito Masaki , Tanji Shigehisa , Ineyama Takashi , Izawa Kunisuke
Published: August 2006

ChemInform 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 Biological Activity of Some New 5′‐O‐Acyl Tiazofurin Derivatives.
Authors: Pejanovic Vjera , Piperski Vesna , Ugljesic‐Kilibarda Dragana , Tasic Jelena , Dacevic Mirjana , Medic‐Mijacevic Ljubica , Gunic Esmir , Popsavin Mirjana , Popsavin Velimir
Published: August 2006

ChemInform 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.
Total Synthesis of Malayamycin A (I) and Analogues.
Authors: Hanessian Stephen , Marcotte Stephane , Machaalani Roger , Huang Guobin , Pierron Julien , Loiseleur Olivier
Published: August 2006

ChemInform 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 Practical Synthesis of the Major 3‐Hydroxy‐2‐pyrrolidinone Metabolite of a Potent CDK2/Cyclin A Inhibitor.
Authors: Nesi Marcella , Borghi Daniela , Brasca Maria Gabriella , Fiorentini Francesco , Pevarello Paolo
Published: August 2006

ChemInform 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 the Pyrazolo[4,3‐e][1,2,4]triazine Family of Natural Products: Nostocine A, Fluviol A, and Pseudoiodinine.
Authors: Kelly T. Ross , Elliott Eric L. , Lebedev Rimma , Pagalday Jaione
Published: August 2006

ChemInform 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 Drug‐Release Method Using the Staudinger Ligation.
Authors: Azoulay Michel , Tuffin Gerald , Sallem Wafa , Florent Jean‐Claude
Published: August 2006

ChemInform 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.
Two Novel Furan Derivatives from Phellinus linteus with anti‐Complement Activity.
Authors: Min Byung‐Sun , Yun Bong‐Sik , Lee Hyeong‐Kyu , Jung Hee‐Jin , Jung Hyun‐Ah , Choi Jae‐Sue
Published: August 2006

ChemInform 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 Optically Active 4,4,4‐Trifluoro‐3‐{4‐(4‐methoxyphenyl)phenyl}butanoic Acid and Its Application to Chiral Dopant for Nematic Liquid Crystals.
Authors: Tojo Kenta , Aoki Yoshio , Yasutaka Mikio , Hirose Takuji
Published: August 2006

ChemInform 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.
Facile Route to α‐FeOOH and α‐Fe2O3 Nanorods and Magnetic Property of α‐Fe2O3 Nanorods.
Authors: Tang Bo , Wang Guangli , Zhuo Linhai , Ge Jiechao , Cui Lijuan
Published: August 2006

ChemInform 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.
Cu—Fe—S (Copper—Iron—Sulfur)
Authors: Raghavan V.
Published: August 2006

ChemInform 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.
Al—Fe—Zr (Aluminum—Iron—Zirconium)
Authors: Raghavan V.
Published: August 2006

ChemInform 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.
Al—Fe—U (Aluminum—Iron—Uranium)
Authors: Raghavan V.
Published: August 2006

ChemInform 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.
Factors Affecting the General Shape of the Phase Diagram and Compound Formation in the Binary Copper(I) Halide—Alkali‐Metal Halide Systems
Authors: Wojakowska A. , Krzyzak E.
Published: August 2006

ChemInform 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.
Reactions of Transition Metal π‐Complexes of Alkenes, Alkynes and Dienes
Authors: Solan Gregory A.
Published: August 2006

ChemInform 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.
Complexes Containing Metal—Carbon σ‐Bonds of the Groups Iron, Cobalt and Nickel, Including Carbenes and Carbynes
Authors: King Philip J.
Published: August 2006

ChemInform 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 (Metallo‐)supramolecular Initiators for Living/Controlled Polymerization Techniques
Authors: Hoogenboom Richard , Schubert Ulrich S.
Published: August 2006

ChemInform 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.
Reactions of Alicyclic Epoxy Compounds with Oxygen‐Centered Nucleophiles
Authors: Kas'yan L. I. , Kas'yan A. O. , Okovityi S. I.
Published: August 2006

ChemInform 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.
Biocatalysis as a Profound Tool in the Preparation of Highly Enantiopure β‐Amino Acids
Authors: Liljeblad Arto , Kanerva Liisa T.
Published: August 2006

ChemInform 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.
Heterocyclization Reactions Involving Thiols
Authors: Koval' I. V.
Published: August 2006

ChemInform 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.
Current Developments in Michael Addition Based Multicomponent Domino Reactions Involving 1,3‐Dicarbonyls and Derivatives.
Authors: Lieby‐Muller Frederic , Simon Celine , Constantieux Thierry , Rodriguez Jean
Published: August 2006

ChemInform 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.
Total Synthesis of Polyketidic Marine Natural Products: Amphidinolides. Part 2.
Authors: Hiersemann Martin
Published: August 2006

ChemInform 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.
Microwave Irradiation of Accelerating Organic Reactions. Part 2. Six‐, Seven‐Membered, Spiro, and Fused Heterocycles
Authors: El Ashry E. S. H. , Kassem A. A. , Ramadan E.
Published: August 2006

ChemInform 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 Chemistry of Thienothiophenes
Authors: Litvinov V. P.
Published: August 2006

ChemInform 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.
Nucleophilic and Free‐Radical Additions of Phosphines and Phosphine Chalcogenides to Alkenes and Alkynes
Authors: Arbuzova Svetlana N. , Gusarova Nina K. , Trofimov Boris A.
Published: August 2006

ChemInform 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.
Targeting Histone Deacetylase in Cancer Therapy
Authors: Lin Hsiang‐Yu , Chen Chang‐Shi , Lin Shuan‐Pei , Weng Jing‐Ru , Chen Ching‐Shih
Published: August 2006

ChemInform 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.
Stereochemistry of Molecules in Inclusion Crystals
Authors: Toda Fumio
Published: August 2006

ChemInform 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.
Stereoselective Thermal Solid State Reactions
Authors: Kaupp Gerd
Published: August 2006

ChemInform 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.
Modified DNA: From Synthesis to Molecular Recognition
Authors: Seela Frank , Peng Xiaohua , Li Hong , Chittepu Padmaja , Shaikh Khalil I. , He Junlin , He Yang , Mikhailopulo Igor
Published: August 2006

ChemInform 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.
Recent Developments in the Chemistry of Molecular Titanosiloxanes and Titanophosphonates
Authors: Davis Paul , Murugavel Ramaswamy
Published: August 2006

ChemInform 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.
Hydroformylation
Authors: Magna Lionel
Published: August 2006

ChemInform 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.
Formation of Metal—Carbon σ‐Bonds via Reactions of Alkynes with Iridium: Reactivity Toward Carbon—Carbon Bond Formation with Neighboring Hydrocarbyl Ligands
Authors: Chin Chong Shik , Lee Hyungeui
Published: August 2006

ChemInform 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 Perhydro‐1,3‐benzoxazines: Powerful Auxiliaries in Asymmetric Synthesis of Nitrogen Heterocycles
Authors: Pedrosa Rafael , Andres Celia , Nieto Javier
Published: August 2006

ChemInform 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.
Templated Synthesis of Interlocked Molecules
Authors: Arico Fabio , Badjic Jovica D. , Cantrill Stuart J. , Flood Amar H. , Leung Ken C.‐F. , Liu Yi , Stoddart J. Fraser
Published: August 2006

ChemInform 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.
Metalation and α‐Amidoalkylation Reactions in the Stereocontrolled Synthesis of Fused Isoquinoline Systems
Authors: Arrasate Sonia , Lete Esther , Sotomayor Nuria
Published: August 2006

ChemInform 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.
Excited‐State Properties and Environmental Effects for Protonated Schiff Bases: A Theoretical Study
Authors: Aquino Adélia J. A. , Barbatti Mario , Lischka Hans
Published: August 2006

Complete active space self‐consistent field (CASSCF), multireference configuration interaction (MRCI), density functional theory (DFT), time dependent DFT (TDDFT) and the singles and doubles coupled‐cluster (CC2) methodologies have been used to study the ground state and excited states of protonated and neutral Schiff bases (PSB and SB) as models for the retinal chromophore. Systems with two to four conjugated double bonds are investigated. Geometry relaxation effects are studied in the excited ππ* state using the aforementioned methods. Taking the MRCI results as reference we find that CASSCF results are quite reliable even though overshooting of geometry changes is observed. TDDFT does not reproduce bond alternation well in the ππ* state. CC2 takes an intermediate position. Environmental effects due to solvent or protein surroundings have been studied in the excited states of the PSBs and SBs using a water molecule and solvated formate as model cases. Particular emphasis is given to the proton transfer process from the PSB to its solvent partner in the excited state. It is found that its feasibility is significantly enhanced in the excited state as compared to the ground state, which means that a proton transfer could be initiated already at an early step in the photodynamics of PSBs.
Optical Properties of Lanthanide‐Doped Lamellar Nanohybrids
Authors: Sá Ferreira Rute A. , Karmaoui Mohamed , Nobre Sónia S. , Carlos Luís D. , Pinna Nicola
Published: August 2006

In this article a detailed study of the optical properties of lanthanide doped lamellar nanohybrids synthesized by the “benzyl alcohol route” is presented. The synthetic approach results in the formation of a highly ordered lamellar nanocomposite consisting of yttrium or gadolinium oxide crystalline layers with a confined thickness of about 0.6 nm, separated from each other by organic layers of intercalated benzoate molecules. When the inorganic layers are doped with optically‐active lanthanide ions they show outstanding emission properties in the green (Tb3+), red (Eu3+) and near infrared (Nd3+). The local environment of the emitting ions and the energy transfer processes involving the phenyl ring of the benzoate complexes and the lanthanide ions are presented, as well as radiance and lifetime measurements. The radiance values are comparable and in some cases even larger than those of standard phosphors, proving that these nanohybrids can compete, from an emission efficiency point of view, with commercial phosphors. Furthermore, in these nanohybrids it is possible by simply changing the excitation wavelength, to tune the emission colour chromaticity without loosing the radiance.
A wavelet‐based piecewise approach for steady‐state analysis of power electronics circuits
Authors: Tam K. C. , Wong S. C. , Tse C. K.
Published: August 2006

Simulation of steady‐state waveforms is important to the design of power electronics circuits, as it reveals the maximum voltage and current stresses being imposed upon specific devices and components. This paper proposes an improved approach to finding steady‐state waveforms of power electronics circuits based on wavelet approximation. The proposed method exploits the time‐domain piecewise property of power electronics circuits in order to improve the accuracy and computational efficiency. Instead of applying one wavelet approximation to the whole period, several wavelet approximations are applied in a piecewise manner to fit the entire waveform. This wavelet‐based piecewise approximation approach can provide very accurate and efficient solution, with much less number of wavelet terms, for approximating steady‐state waveforms of power electronics circuits. Copyright © 2006 John Wiley & Sons, Ltd.
Comparative Study of the Phospha‐ and Arsa‐Wittig Reaction Using 1H, 75As and 17O NMR Spectroscopy
Authors: Raeck Christian , Berger Stefan
Published: August 2006

The existence of oxaarsetanes during an arsa‐Wittig reaction has been proved by 1H and 17O NMR spectroscopy. 75As NMR spectra were obtained from the corresponding arsonium salts and arsane oxides. The dynamic 1H NMR spectra of phospha‐ and arsaylides were compared. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
DNA damage and mutagenicity induced by endosulfan and its metabolites
Authors: Bajpayee Mahima , Pandey Alok Kumar , Zaidi Sabina , Musarrat Javed , Parmar Devendra , Mathur Neeraj , Seth Prahlad Kishore , Dhawan Alok
Published: August 2006

Endosulfan is a widely used broad‐spectrum organochlorine pesticide, which acts as a contact and stomach poison. Nontarget species, such as cattle, fish, birds, and even humans, are also affected. Studies on the genotoxicity and mutagenicity of endosulfan have been inconsistent and nothing is known about the genotoxicity of its metabolites. In the present study, endosulfan (as a commercial isomeric mixture and as the α‐ and β‐isomers), and metabolites of endosulfan (the sulfate, lactone, ether, hydroxyether, and diol derivatives) were assayed for their ability to induce DNA damage in Chinese hamster ovary (CHO) cells and human lymphocytes using the Comet assay and were assayed for their mutagenicity using the Salmonella reversion assay (Ames test with TA98, TA97a, TA102, TA104, and TA100, with and without S9 activation). The compounds produced statistically significant (P < 0.01), concentration‐dependent (0.25–10 μM) increases in DNA damage in both CHO cells and human lymphocytes. Endosulfan lactone caused the most DNA damage in CHO cells, while the isomeric mixture of endosulfan produced the greatest response in lymphocytes. The test compounds also were mutagenic in Salmonella strains at concentrations of 1–20 μg/plate (P < 0.05), with TA98 being the most sensitive strain and the diol and hydroxyether metabolites producing the highest responses. The results indicate that exposure to sublethal doses of endosulfan and its metabolites induces DNA damage and mutation. The contribution of the metabolites to the genotoxicity of the parent compound in Salmonella and mammalian cells, however, is unclear, and the pathways leading to bacterial mutation and mammalian cell DNA damage appear to differ. Environ. Mol. Mutagen., 2006. © 2006 Wiley‐Liss, Inc.
Masked intervention effects: Analytic methods for addressing low dosage of intervention
Authors: Lochman John E. , Boxmeyer Caroline , Powell Nicole , Roth David L. , Windle Michael
Published: August 2006

This chapter describes potential drawbacks of using intent‐to‐treat (ITT) analyses to examine intervention effects and presents several additional analytic methods as alternatives to ITT.
True health vs response styles: exploring cross‐country differences in self‐reported health
Authors: Jürges Hendrik
Published: August 2006

The aim of this paper is to decompose cross‐national differences in self‐reported general health into parts explained by differences in ‘true’ health, measured by diagnosed conditions and measurements, and parts explained by cross‐cultural differences in response styles. The data used were drawn from the Survey of Health, Ageing and Retirement in Europe 2004 (SHARE), using information from 22 731 individuals aged 50 and over from 10 European countries. Self‐rated general health shows large cross‐country variations. According to their self‐reports, the healthiest respondents live in the Scandinavian countries and the least healthy live in Southern Europe. Counterfactual self‐reported health distributions that assume identical response styles in each country show much less variation in self‐reports than factual self‐reports. Danish and Swedish respondents tend to largely over‐rate their health (relative to the average) whereas Germans tend to under‐rate their health. If differences in reporting styles are taken into account, cross‐country variations in general health are reduced but not eliminated. Failing to account for differences in reporting styles may yield misleading results. Copyright © 2006 John Wiley & Sons, Ltd.