bluuebunny/crossref_metadata_2025_split huggingface dataset:
Palladium Catalytic Species Containing Chiral Phosphites: Towards a Discrimination between Molecular and Colloidal Catalysts
Authors: Favier Isabelle , Gómez Montserrat , Muller Guillermo , Axet M. Rosa , Castillón Sergio , Claver Carmen , Jansat Susanna , Chaudret Bruno , Philippot Karine 
Published: October 2007

AbstractPalladium nanoparticles (Pd1–Pd3) stabilized by chiral diphosphite ligands (1–3), were synthesized and tested as catalysts for the allylic alkylation reaction, using different substrates (rac‐I, rac‐III and rac‐V). Carbohydrate ligands (1 and 2), only differing in the C‐3 configuration, led to a remarkable difference in stability of the corresponding nanoparticles: while Pd1 is a robust catalyst, Pd2 decomposes into molecular species. In addition, the high enantioselective systems, Pd1 and Pd3, are only active for a substrate containing phenyl groups. Concerning the catalytic behaviour of the corresponding molecular systems, palladium complexes coordinated to ligands 1 or 3, gave excellent asymmetric inductions, but an analogous catalyst accommodating ligand 2, was not found selective.
Effects of aging on hematology and serum clinical chemistry in chimpanzees (Pan troglodytes)
Authors: Videan Elaine N. , Fritz Jo , Murphy James 
Published: October 2007

AbstractA number of age‐related changes in physiological functions have been identified in macaques and humans. However, few studies have examined physiological aging in chimpanzees, despite the increasing age of the chimpanzee population. We documented age‐related changes in seven hematology and 17 clinical chemistry parameters in 49 adult chimpanzees (17 males, 32 females) as a comparative viewpoint with human and macaque aging. Longitudinal data were analyzed using weighted linear and quadratic mixed effects regression models. Male chimpanzees exhibited a significant age‐related increase in anemia risk, based on significant decreases in hemoglobin (F1,49=12.45, P=0.0009) and hematocrit (F1,49=15.42, P=0.0003). Both sexes exhibited significant age‐related decreases in both kidney and liver function. Decreases in kidney function were noted by significant increases in blood urea nitrogen (F1,45=3.92, P=0.036) and creatinine (F1,50=5.63, P=0.022) as well as changes in electrolyte (i.e., sodium, potassium, phosphorous, chloride) balance. Declining liver function was based on significant increases in globulin (F1,46=32.34, P<0.0001) and decreases in albumin (F1,48=23.42, P<0.0001). These changes were most evident beginning at 25–30 years of age in males and 30–35 years of age in females. We recommend amending chimpanzee age classes to categorize males over 25 years and females over 30 years as aged. Am. J. Primatol. 70:327–338, 2008. © 2007 Wiley‐Liss, Inc.
Pharmacokinetic interaction of ketoconazole and itraconazole with ciprofloxacin
Authors: Abou‐Auda Hisham S. , Mustafa Ali A. , Al‐Humayyd Mohammad S. 
Published: October 2007

AbstractThe effect of the concomitant administration of the antifungal drugs ketoconazole (KTC) and itraconazole (ITC) on the pharmacokinetics of ciprofloxacin (CIP) following short‐ and long‐term administration in mice was investigated. Animals received either a dose of CIP (20 mg/kg, i.p.), CIP (20 mg/kg, i.p.) together with KTC (50 mg/kg, p.o.) or CIP (20 mg/kg, i.p.) and ITC (30 mg/kg, p.o.). The same treatments were repeated for 7 days. Blood samples were collected up to 4 h following drug administration and two urine samples were collected at 2 h and 4 h after drug administration. CIP plasma concentrations were significantly higher in KTC‐ and ITC‐treated groups compared with the corresponding control groups. The concomitant administration of KTC or ITC with CIP also significantly (p<0.05) increased Cmax, t1/2, MRT and AUC0−∞ with no change in Tmax. CIP clearance was significantly reduced by both agents. KTC and ITC reduced CIP urinary excretion. This study suggests that an important pharmacokinetic interaction between CIP and KTC or ITC is likely to occur when either of the two antifungal drugs is administered concomitantly with CIP. The results may suggest possible reductions in total clearance of CIP, owing to inhibition of its renal tubular excretion by KTC and ITC. Copyright © 2007 John Wiley & Sons, Ltd.
Optimal Conditions for Labelling of 3T3 Fibroblasts with Magnetoliposomes without Affecting Cellular Viability
Authors: Soenen Stefaan J. H. , Baert Johan , De Cuyper Marcel 
Published: October 2007

AbstractA comparative study that deals with the internalisation of different types of magnetoliposomes (MLs) by 3T3 fibroblasts revealed that cationic MLs proved to be superior to neutral and anionic ones. Internalisation was visualised both by optical light and transmission electron microscopy. The latter showed that the cationic MLs ultimately ended up in lysosomal structures. The effect of increasing 1,2‐dioleoyl‐3‐trimethylammonium propane (DOTAP) concentrations in the cationic ML coat has been elucidated. High uptake efficiency was only achieved with MLs that carry a high DOTAP payload. However, these structures also demonstrated toxic effects. The use of the saturated distearoyl analogue (DSTAP) at identical concentrations led to improved uptake efficiency and lower toxicity. By using iron‐oxide‐free vesicles, it was shown that the toxicity was due to lipid bilayer constituents and not the iron oxide. In conclusion, the use of DMPC–DSTAP (96.67:3.33; molar ratio) MLs results in an extremely high labelling of 3T3 fibroblasts with iron oxides (47.66 pg Fe per cell) without evoking any influence on cell viability.
Context‐Dependence of the Contribution of Disulfide Bonds to β‐Hairpin Stability
Authors: Santiveri Clara M. , León Esther , Rico Manuel , Jiménez M. Angeles 
Published: October 2007

AbstractIncorporation of disulfide bonds to stabilize protein and peptide structures is not always a successful strategy. To advance current knowledge on the contribution of disulfide bonds to β‐hairpin stability, a previously reported β‐hairpin‐forming peptide was taken as a template to design a series of Cys‐containing peptides. The conformational behavior of these peptides in their oxidized, disulfide‐cyclized peptides, and reduced, linear peptides, was investigated on the basis of NMR parameters: NOEs, and 1H and 13C chemical shifts. We found that the effect of disulfide bonds on β‐hairpin stability depends on its location within the β‐hairpin structure, being very small or even destabilizing when connecting two hydrogen‐bonded facing residues. When the disulfide bond is linking non‐hydrogen‐bonded facing residues, we estimated that its contribution to the free‐energy change of β‐hairpin folding is approximately −1.0 kcal mol−1. This value is larger than those reported for most β‐hairpin‐stabilizing cross‐strand side‐chain–side‐chain interactions, except for some aromatic–aromatic interactions, in particular the Trp–Trp one, and the cation–π interaction between Trp and the non‐natural methylated Arg/Lys. As disulfide bonds are frequently used to stabilize peptide conformations, our conclusions can be useful for peptide, peptidomimetic, and protein design, and may even extend to other chemical cross‐links.
Hopeahainol A: An Acetylcholinesterase Inhibitor from Hopea hainanensis
Authors: Ge Hui Ming , Zhu Chun Hua , Shi Da Hua , Zhang Li Dong , Xie Dai Qian , Yang Jie , Ng Seik Weng , Tan Ren Xiang 
Published: October 2007

AbstractA phytochemical study of Hopea hainanensis has led to the isolation of three new polyphenols and one known compound. The most important of these compounds are hopeahainols A (2) and B (3), which contain an unprecedented carbon skeleton. The structures were elucidated by analysis of the spectroscopic data including single‐crystal X‐ray spectroscopy and computational methods. Hopeahainol A was an acetylcholinesterase inhibitor with an IC50 value of 4.33 μM, which is comparable to that of huperzine A, a presently prescribed drug for the treatment of Alzheimer, while other similar structures were inactive. This observation was complemented by a 3D interaction model of the inhibitor with active sites.
Innate Immune Responses of Synthetic Lipid A Derivatives of Neisseria meningitidis
Authors: Zhang Yanghui , Gaekwad Jidnyasa , Wolfert Margreet A. , Boons Geert‐Jan 
Published: October 2007

AbstractDifferences in the pattern and chemical nature of fatty acids of lipid A of Neisseria meningitides lipooligosaccharides (LOS) and Escherichia coli lipopolysaccharides (LPS) may account for differences in inflammatory properties. Furthermore, there are indications that dimeric 3‐deoxy‐D‐manno‐oct‐2‐ulosonic acid (KDO) moieties of LOS and LPS enhance biological activities. Heterogeneity in the structure of lipid A and possible contaminations with other inflammatory components have made it difficult to confirm these observations. To address these problems, a highly convergent approach for the synthesis of a lipid A derivative containing KDO has been developed, which relies on the ability to selectively remove or unmask in a sequential manner an isopropylidene acetal, 9‐fluorenylmethoxycarbonyl (Fmoc), allyloxycarbonate (Alloc), azide, and thexyldimethylsilyl (TDS) ether. The strategy was employed for the synthesis of N. meningitidis lipid A containing KDO (3). Mouse macrophages were exposed to the synthetic compound and its parent LOS, E. coli lipid A (2), and a hybrid derivative (4) that has the asymmetrical acylation pattern of E. coli lipid A, but the shorter lipids of meningococcal lipid A. The resulting supernatants were examined for tumor necrosis factor alpha (TNF‐α) and interferon beta (IFN‐β) production. The lipid A derivative containing KDO was much more active than lipid A alone and just slightly less active than its parent LOS, indicating that one KDO moiety is sufficient for full activity of TNF‐α and IFN‐β induction. The lipid A of N. meningitidis was a significantly more potent inducer of TNF‐α and IFN‐β than E. coli lipid A, which is due to a number of shorter fatty acids. The compounds did not demonstrate a bias towards a MyD88‐ or TRIF‐dependent response.
A New Layered Perovskite, KSrNb2O6F, by Powder Neutron Diffraction.
Authors: Yoo Chung‐Yul , Hong Kun‐Pyo , Kim Seung‐Joo 
Published: October 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.
Tyrrellite, Cu(Co0.68Ni0.32)2Se4, Isostructural with Spinel.
Authors: Yang Hexiong , Hubler David K. , Lavina Barbara , Downs Robert T. , Costin Gelu 
Published: October 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.
Interplay Between Size and Electronic Effects in Determining the Homogeneity Range of the A9Zn4+xPn9 and A9Cd4+xPn9 Phases (0 ≤ x ≤ 0.5), A: Ca, Sr, Yb, Eu; Pn: Sb, Bi.
Authors: Xia Sheng‐qing , Bobev Svilen 
Published: October 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.
Efficient X‐Ray Generation of Sm2+ in Nanocrystalline BaFCl/Sm3+: A Photoluminescent X‐Ray Storage Phosphor.
Authors: Riesen Hans , Kaczmarek Wieslaw A. 
Published: October 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 Blue Xe4+ Cation: Experimental Detection and Theoretical Characterization.
Authors: Seidel Stefan , Seppelt Konrad , van Wuellen Christoph , Sun Xiao Ying 
Published: October 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.
CsSc[B2P3O11(OH)3]: A New Borophosphate Oligomer Containing Boron in Three‐ and Fourfold Coordination.
Authors: Menezes Prashanth W. , Hoffmann Stefan , Prots Yurii , Kniep Ruediger 
Published: October 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 Polyoxometalate‐Induced Enantiomerically 3D Architectures: A New Route for Synthesis of High‐Dimensional Chiral Compounds.
Authors: Tan Huaqiao , Li Yangguang , Zhang Zhiming , Qin Chao , Wang Xinlong , Wang Enbo , Su Zhongmin 
Published: October 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.
Novel Polymer‐Bound Amino Alcohol Ligands for the Asymmetric Addition of Diethylzinc to Aldehydes.
Authors: Page Philip C. Bulman , Allin Steven M. , Dilly Suzanne J. , Buckley Benjamin R. 
Published: October 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.
Nitrilase‐Catalyzed Selective Hydrolysis of Dinitriles and Green Access to the Cyanocarboxylic Acids of Pharmaceutical Importance.
Authors: Zhu Dunming , Mukherjee Chandrani , Biehl Edward R. , Hua Ling 
Published: October 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.
Ruthenium‐Catalyzed [2 + 2 + 2] Cocyclization of Diene‐yne.
Authors: Tanaka Daisuke , Sato Yoshihiro , Mori Miwako 
Published: October 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 High‐Temperature Alicyclic Ring Contraction of 1,1‐Dichloroperfluorotetralin and the Alicyclic Ring Opening of 1,1‐Dichloroperfluorobenzocyclobutene.
Authors: Karpov Victor M. , Mezhenkova Tatyana V. , Platonov Vyacheslav E. 
Published: October 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 Some Novel Heterocyclic Compounds Derived from Diflunisal Hydrazide as Potential Antiinfective and Antiinflammatory Agents.
Authors: Kuecuekguezel S. Gueniz , Kuecuekguezel Ilkay , Tatar Esra , Rollas Sevim , Sahin Fikrettin , Guelluece Medine , De Clercq Erik , Kabasakal Levent 
Published: October 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.
Efficient Electrophilic Cobromination of Alkenes and Bromination of Activated Arenes with Bromodichloroisocyanuric Acid under Mild Conditions.
Authors: de Almeida Leonardo S. , Esteves Pierre M. , de Mattos Marcio C. S. 
Published: October 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 New Synthesis of Trifluorinated Compounds via 1,1‐Dichloro‐1‐alkenes in Superacid.
Authors: Cantet Anne‐Celine , Gesson Jean‐Pierre , Renoux Brigitte , Jouannetaud Marie‐Paule 
Published: October 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.
Oxidative Coupling of Carbonyl Compounds by Using Pentavalent Biphenyl‐2,2′‐ylenebismuth Reagents.
Authors: Imachi Shohei , Mukaiyama Teruaki 
Published: October 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.
Nitroaldol Reaction Catalyzed by Tris(2,4,6‐trimethoxyphenyl)phosphine (TTMPP).
Authors: Hirata N. , Hayashi M. 
Published: October 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.
Reductive Deprotection of Silyl Groups with Wilkinson′s Catalyzed/Catechol Borane.
Authors: Patel Pranav , Chang Chih‐Tsung , Kang Namin , Lee Gue‐Jae , Powell Williams S. , Rokach Joshua 
Published: October 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.
Formation of Dioxolane on the Surface of Silica—Sulfuric Acid in Dry Media — Chemoselective Protection of Aryl Aldehydes.
Authors: Saha Manabendra , Roy Sanchita , Chaudhuri Subrata Kumar , Bhar Sanjay 
Published: October 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.
Conjugate Addition of RMgX—3MeLi to α,β‐Unsaturated Amides and α,β‐Unsaturated Carboxylic Acids.
Authors: Kikuchi Mikiko , Niikura Satomi , Chiba Nao , Terauchi Nahoko , Asaoka Morio 
Published: October 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 Selective Trimerization of Isoprene with Chromium N,N‐Bis(diarylphosphino)amine Catalysts.
Authors: Bowen Lucy E. , Charernsuk Manutsavin , Wass Duncan F. 
Published: October 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.
Allylic Amines via Iridium‐Catalyzed C—C Bond Forming Hydrogenation: Imine Vinylation in the Absence of Stoichiometric By‐Products or Metallic Reagents.
Authors: Barchuk Andriy , Ngai Ming‐Yu , Krische Michael J. 
Published: October 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.
Exploiting Organocatalysis: Enantioselective Synthesis of Vinyl Glycines by Allylic Sulfimide [2,3] Sigmatropic Rearrangement.
Authors: Armstrong Alan , Challinor Lee , Moir Jennifer H. 
Published: October 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.
Conversion of Azobenzenes into N,N′‐Diarylhydrazines by Sodium Dithionite.
Authors: Sydnes Leiv K. , Elmi Shire , Heggen Per , Holmelid Bjarte , Malthe‐Soerensen Didrik 
Published: October 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.
Asymmetric Hydroboration and Matteson Homologation for the Preparation of Fluorinated α‐Phenethanols.
Authors: Ramachandran P. Veeraraghavan , Jennings Michael P. 
Published: October 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.
Highly Regioselective Hydrolysis of Substituted 2‐Benzylidene‐1,3‐propylene Diacetates Using Porcine Pancreas Lipase.
Authors: Miura Tsuyoshi , Kawashima Yuya , Umetsu Satoe , Kanamori Daisuke , Tsuyama Nanae , Jyo Yuki , Murakami Yasuoki , Imai Nobuyuki 
Published: October 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.
Zinc—Proline Complex: An Efficient, Reusable Catalyst for Direct Nitroaldol Reaction in Aqueous Media.
Authors: Reddy K. Rajender , Rajasekhar C. V. , Krishna G. Gopi 
Published: October 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.
Simple, One‐Pot Procedure for the Generation of Homoallylic Alcohols from Barbier‐Type Allylation of Gem‐Diacetates in the Presence of β‐Cyclodextrin in Water.
Authors: Reddy M. Somi , Narender M. , Nageswar Y. V. D. , Rao K. Rama 
Published: October 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 Development of Scalemic Multidentate Niobium Complexes as Catalysts for the Highly Stereoselective Ring Opening of meso‐Epoxides and meso‐Aziridines.
Authors: Arai Kenzo , Lucarini Simone , Salter Matthew M. , Ohta Kentaro , Yamashita Yasuhiro , Kobayashi Shu 
Published: October 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.
Trifluoromethyl‐Containing N‐Acylmethylenequinone Imines as Novel Highly Electrophilic Agents.
Authors: Dyachenko Victor I. , Peregudov Aleksandr S. , Chkanikov Nikolai D. 
Published: October 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.
Highly Enantioselective Transfer Hydrogenation of α‐Imino Esters by a Phosphoric Acid.
Authors: Kang Qiang , Zhao Zhuo‐An , You Shu‐Li 
Published: October 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.
An Expeditious and Convenient Synthesis of Acylsulfonamides Utilizing Polymer‐Supported Reagents.
Authors: Wang Ying , Sarris Kathy , Sauer Daryl R. , Djuric Stevan W. 
Published: October 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.
Practical Synthesis of 4‐Fluoro‐2‐(methylthio)benzylamine (V) and the Corresponding Sulfone (X) and Sulfonamide (XVI).
Authors: Perlow Debra S. , Kuo Michelle S. , Moritz H. Marie , Wai John S. , Egbertson Melissa S. 
Published: October 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, Structure, and Diverse Catalytic Activities of [Ethylenebis(indenyl)]lanthanide(III) Amides on N—H and C—H Addition to Carbodiimides and ε‐Caprolactone Polymerization.
Authors: Zhou Shuangliu , Wang Shaowu , Yang Gaosheng , Li Qinghai , Zhang Lijun , Yao Zijian , Zhou Zhangkai , Song Hai‐bin 
Published: October 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.