bluuebunny/crossref_metadata_2025_split huggingface dataset:
An RCM Based Approach to (.+‐.)‐Herbertene‐1,14‐diol and (.+‐.)‐Tochuinyl Acetates.
Authors: Srikrishna A. , Rao M. Sreenivasa 
Published: November 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Catalyzed Synthesis of 3‐Arylsteroids.
Authors: Latyshev G. V. , Lukashev N. V. , Beletskaya I. P. 
Published: November 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.
Stylissamides A—D — New Proline‐Containing Cyclic Heptapeptides from the Marine Sponge Stylissa caribica.
Authors: Schmidt Gesine , Grube Achim , Koeck Matthias 
Published: November 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 Regio‐ and Stereoselective Synthesis of 1‐β‐O‐Glucuronyl Carbamates and Carbonates from Unprotected 1,2,3,4‐Hydroxyl Glucuronates.
Authors: Thomas Mickael , Gesson Jean‐Pierre , Papot Sebastien 
Published: November 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.
Stereoselective Synthesis of D‐1‐Deoxynojirimycin and Its Stereoisomers.
Authors: Kim In Su , Lee Ho Young , Jung Young Hoon 
Published: November 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.
“Super Armed” Glycosyl Donors: Conformational Arming of Thioglycosides by Silylation.
Authors: Pedersen Christian Marcus , Nordstroem Lars Ulrik , Bols Mikael 
Published: November 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.
Diastereoselective Addition of Alkynylalanes to Carbohydrate‐Derived Nitrones.
Authors: Pillard Christelle , Desvergnes Valerie , Py Sandrine 
Published: November 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Mediated Synthesis of Calothrixin B (VII).
Authors: Bernardo Paul H. , Fitriyanto Wuri , Chai Christina L. L. 
Published: November 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.
Studies on Ring‐Closing Methathesis for the Formation of the 11‐Membered Ring System of Daphnezomine C.
Authors: Tanabe Kazuhisa , Fujie Ayako , Ohmori Naoki , Hiraga Yoshikazu , Kojima Satoshi , Ohkata Katsuo 
Published: November 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Direct Preparation of Nucleoside Vinyl Disulfides from 2‐(Trimethylsilyl)ethyl Sulfides, an Access to Vinylthiols.
Authors: Gerland Beatrice , Desire Jerome , Lepoivre Michel , Decout Jean‐Luc 
Published: November 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 Chromone, 11‐Hydroxy‐sec‐O‐glucosylhamaudol from Ostericum koreanum.
Authors: Park Yeo Jin , Kim Hyoung Ja , Lee Sook Ja , Choi Ho‐Young , Jin Changbae , Lee Yong Sup 
Published: November 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.
Two New β‐Class Milbemycins from Streptomyces bingchenggensis: Fermentation, Isolation, Structure Elucidation and Biological Properties.
Authors: Xiang Wen‐Sheng , Wang Ji‐Dong , Wang Xiang‐Jing , Zhang Ji 
Published: November 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.
Stereochemistry of Pladienolide B.
Authors: Asai Naoki , Kotake Yoshihiko , Niijima Jun , Fukuda Yoshio , Uehara Taisuke , Sakai Takashi 
Published: November 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.
Lepidepyrone, a New γ‐Pyrone Derivative, from Neolentinus lepideus, Inhibits Hyaluronidase.
Authors: Hosoe Tomoo , Sakai Hideo , Ichikawa Makoto , Itabashi Takeshi , Ishizaki Takayuki , Kawai Ken‐ichi 
Published: November 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 and Evaluation of 2‐Nonylaminopyridine Derivatives as PPAR Ligands.
Authors: Usui Shinya , Fujieda Hiroki , Suzuki Takayoshi , Yoshida Naoaki , Nakagawa Hidehiko , Ogura Michitaka , Makishima Makoto , Miyata Naoki 
Published: November 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.
Magnons in Ferromagnetic Metallic Manganites
Authors: Zhang Jiandi , Ye F. , Sha Hao , Dai Pengcheng , Fernandez‐Baca J. A. , Plummer E. W. 
Published: November 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 Spin‐States and Spin‐Transitions of Mononuclear Iron(II) Complexes of Nitrogen Donor Ligands
Authors: Halcrow Malcolm A. 
Published: November 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.
Phospha‐ and Arsaalkenes RE=C(NMe2)2 (E: P, As) as Novel Phosphinidene‐ and Arsinidene‐Transfer Reagents
Authors: Weber Lothar 
Published: November 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.
Stereoselective Conjugate Addition Reactions Using in situ Metalated Terminal Alkynes and the Development of Novel Chiral P,N‐Ligands
Authors: Fujimori Shinji , Knoepfel Thomas F. , Zarotti Pablo , Ichikawa Takashi , Boyall Dean , Carreira Erick M. 
Published: November 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.
Biofriendly Sol—Gel Processing for the Entrapment of Soluble and Membrane‐Bound Proteins: Toward Novel Solid‐Phase Assays for High‐Throughput Screening
Authors: Brennan John D. 
Published: November 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.
Cell‐Directed Assembly of Bio/Nano Interfaces — A New Scheme for Cell Immobilization
Authors: Baca Helen K. , Carnes Eric , Singh Seema , Ashley Carlee , Lopez Deanna , Brinker C. Jeffrey 
Published: November 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 and Functionalization of a Mesoporous Silica Nanoparticle Based on the Sol—Gel Process and Applications in Controlled Release
Authors: Trewyn Brian G. , Slowing Igor I. , Giri Supratim , Chen Hung‐Ting , Lin Victor S.‐Y. 
Published: November 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.
Physico‐Chemical and Evolutionary Constraints for the Formation and Selection of First Biopolymers: Towards the Consensus Paradigm of the Abiogenic Origin of Life
Authors: Mulkidjanian Armen Y. , Galperin Michael Y. 
Published: November 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 Biochemistry of Drug Metabolism — An Introduction. Part 3. Reactions of Hydrolysis and Their Enzymes
Authors: Testa Bernard , Kraemer Stefanie D. 
Published: November 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.
Toward the Integration of Liquid‐ and Solid‐State NMR Across the Undergraduate Curriculum
Authors: Washton N. M. , Earnheart K. C. , Sykes D. G. , Ucak‐Astarlioglu M. , Mueller K. T. 
Published: November 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.
Construction of ZnII Compounds with a Chelating 2,2′‐Dipyridylamine (Hdpa) Ligand: Anion Effect and Catalytic Activities
Authors: Kwak Han , Lee Sun Hwa , Kim Soo Hyun , Lee Young Min , Lee Eun Yong , Park Byeong Kwon , Kim Eun Young , Kim Cheal , Kim Sung‐Jin , Kim Youngmee 
Published: November 2007

AbstractThe structures of new compounds containing ZnII ions and Hdpa (2,2′‐dipyridylamine)‐chelating ligands were determined. The Hdpa chelating ligands coordinate to ZnII ions to form mononuclear units (1 and 5), and intermolecular nonclassical hydrogen‐bond (C–H···O or N/C–H···I) interactions generate polymeric compounds. The chelating ligands with a bipyridyl moiety form mostly mononuclear complexes of different types (I, II and III), and the combination of this ligand with a sulfate anion can produce polymeric species (Type IV). Interestingly, homogeneous catalyst 1 catalyzed efficiently the transesterification of a variety of esters with different alcohols, and hydrogen‐bonded polymer 5 showed the heterogeneous catalytic activity for the transesterification reactions. Preliminary selectivity test of primary over secondary alcohol protection in the presence of 1 provided, exclusively, the primary acetate, which suggests the potential utility of this catalyst to be selective for primary alcohols.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
On the Reactivity of C(sp3)–H σ‐Bonds: Oxygenation with Methyl(trifluoromethyl)­dioxirane
Authors: Mello Rossella , Royo Jorge , Andreu Cecilia , Báguena‐Añó Minerva , Asensio Gregorio , González‐Núñez María Elena 
Published: November 2007

AbstractThe reactivity of C–H σ‐bonds of a series of 2‐substituted adamantanes 2 towards methyl(trifluoromethyl)dioxirane (1) shows a consistent dependence on the electron‐withdrawing ability, either inductive or by resonance, of the substituent. The results are interpreted in terms of the ability of the substrate molecule to delocalize the electronic perturbation of the reacting center at the beginning of the reaction path. The model shows that the electronic demand from the reacting C–H σ‐bond is transmitted along the substrate through a chain of hyperconjugative interactions, the relative intensities of which depend on the σ‐bonds involved. The substrate molecule simultaneously provides positive and negative stabilizing hyperconjugative interactions to the reacting center, their balance defining the geometry of the system at the beginning of the reaction path. The model constitutes a new experimental approach to measurement of the perturbation induced by substituents with significant resonance contributions on an adjacent C–H σ‐bond. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Carcinogenetic impact of ADH1B and ALDH2 genes on squamous cell carcinoma risk of the esophagus with regard to the consumption of alcohol, tobacco and betel quid
Authors: Lee Chien‐Hung , Lee Jang‐Ming , Wu Deng‐Chyang , Goan Yih‐Gang , Chou Shah‐Hwa , Wu I‐Chen , Kao Ein‐Long , Chan Te‐Fu , Huang Meng‐Chuan , Chen Pei‐Shih , Lee Chun‐Ying , Huang Chia‐Tsuan , Huang Hsiao‐Ling , Hu Chih‐Yang , Hung Yu‐Hsiu , Wu Ming‐Tsang 
Published: November 2007

AbstractThe consumption of alcohol, tobacco and betel quid has been found to be an important contributor to esophageal squamous cell carcinoma (ESCC) in Taiwan. The genotoxic effect of the ADH1B and ALDH2 genes modulating an individual's alcohol‐metabolizing capacity on ESCC may be linked to drinking behavior, intake pattern and other exogenous factors. To investigate the interplay of these genetic and environmental factors in determining the risk of ESCC, a multicenter case‐control study was conducted. Here, 406 patients with pathology‐proven ESCC, as well as 656 gender, age and study hospital matched controls were recruited. Genetic polymorphisms of ADH1B and ALDH2 appeared to correlate with the abstinence of alcohol, though not with tobacco and betel quid. Within the same levels of alcohol consumption, carcinoma risks increased along with an increase in the numbers of ADH1B*1 and ALDH2*2 alleles. The inactive ALDH2*1/*2 genotype was found to multiplicatively interact with a low‐to‐moderate (0.1–30 g/day) and a heavy (>30 g/day) ethanol intake to increase the ESCC risk (the joint aOR = 14.5 and 102.6, respectively). Among low‐to‐moderate drinkers, a smoking‐dependent carcinogenetic effect for the ADH1B*1/*1 and ALDH2*1/*2+*2/*2 genotypes was recognized, with significant risks found in smokers, but not in nonsmokers. Further, a supra‐multiplicative combined risk of ESCC for alcohol and tobacco use was identified among carriers of the ADH1B*1/*1 genotype (p for interaction = 0.042). In conclusion, the interplay of the ADH1B and ALDH2 genotypes, in conjunction with a behaved drinking habit and a practiced drinking pattern, along with continued tobacco consumption, plays an important pathogenic role in modulating ESCC risk. © 2007 Wiley‐Liss, Inc.
Birth characteristics and Wilms tumor in Minnesota
Authors: Puumala Susan E. , Soler John T. , Johnson Kimberly J. , Spector Logan G. 
Published: November 2007

AbstractWilms tumor (WT) is a childhood kidney cancer with the highest rate of occurrence before the age of 2. Since it is rare, previous research has been limited and few risk factors have been established. We used a case‐cohort design to examine the influence of birth characteristics on occurrence of WT in Minnesota. A total of 2,188 cases of cancer diagnosed in children aged 28 days to 14 years from 1988 to 2004 were identified using the Minnesota Cancer Surveillance System (MCSS). For each case, 4 children were randomly selected from Minnesota birth records during 1976–2004, frequency matched on birth year. Thus, a total of 8,752 children comprised the subcohort for the study, who in this analysis, served as comparison to the 138 cases of WT. Study variables included parental demographics, maternal pregnancy history and conditions and health and conditions of the child at birth. Associations with WT were assessed using hazard ratios (HR) and 95% confidence intervals (CI) calculated from stratified Cox regression models. We found an increased risk of WT for children who were large for gestational age compared to those average for gestational age and for children with congenital abnormalities. There was also an increased risk for children with a birth weight > 4,000 g compared to those with a birth weight between 2,500 and 4,000 g. All other factors examined showed no association with WT. This study contributes to the mounting evidence that children with large size at birth have an increased risk of WT. © 2007 Wiley‐Liss, Inc.
The effects of tumor‐derived platelet‐derived growth factor on vascular morphology and function in vivo revealed by susceptibility MRI
Authors: Robinson Simon P. , Ludwig Christian , Paulsson Janna , Östman Arne 
Published: November 2007

AbstractPlatelet‐derived growth factors (PDGF) play a major role in pericyte recruitment in tumor capillaries. Pericytes are required for proper vessel development, and contribute to tumor angiogenesis by promoting stabilization and maturation of newly formed vessels. To investigate the effects of pericyte coverage on tumor vessel morphology and function in vivo, tumors derived from B16 melanoma cells transfected with either control plasmid (B16/ctr) or plasmid encoding full‐length PDGF‐BB (B16/PDGF), the latter previously shown to have enhanced blood vessel pericyte coverage and an increased tumor growth rate, were assessed using histopathological methods, Hoechst 33342‐based perfusion analyses, and two noninvasive susceptibility magnetic resonance imaging (MRI) methods. Susceptibility‐contrast MRI, incorporating the use of ultrasmall superparamagnetic iron oxide particles, revealed a significant (p < 0.05) reduction in vessel size index (Rv) of B16/PDGF tumors, and which was validated histologically by the presence of significantly smaller (p < 0.001), more punctate blood vessels identified by fluorescence microscopy of the perfusion marker Hoechst 33342. Intrinsic‐susceptibility MRI was used to measure the transverse MRI relaxation rate R2*, sensitive to changes in endogenous paramagnetic [deoxyhaemoglobin], and used to probe for vascular maturation and function. Hypercapnia (5% CO2/95% air) induced a negligible ΔR2* response in the B16/ctr and B16/PDGF tumors. In contrast, hyperoxia (5% CO2/95% O2) induced a significantly greater R2* reduction in the B16/PDGF tumors (p < 0.02). Together the susceptibility MRI‐derived biomarkers reveal novel pericyte‐dependent changes in the morphology and function of the perfused tumor vasculature in vivo. © 2007 Wiley‐Liss, Inc.
Livelihood diversification strategies, incomes and soil management strategies: a case study from Kerio Valley, Kenya
Authors: Iiyama Miyuki , Kariuki Patrick , Kristjanson Patti , Kaitibie Simeon , Maitima Joseph 
Published: November 2007

AbstractAfrican farmers diversify their livelihood strategies through on‐farm and off‐farm activities. We cluster households according to similar livelihood diversification strategies and explore the implications for income levels and sustainable soil management practices. Five main livelihood diversification strategies were being pursued. Households with off‐farm income, and those pursuing higher return agricultural activities earned more than twice as much as the lowest income groups, which were the least diversified. They also were more likely to implement soil conservation measures. Policies aimed at improving household well‐being need to take into account a wide range of household asset endowments and livelihood strategies being pursued. Copyright © 2007 John Wiley & Sons, Ltd.
Synthesis of propyl‐functionalized hybrid monolithic silica capillaries and evaluation of their performances in nano‐LC and CEC
Authors: Roux Richard , Puy Guillaume , Demesmay Claire , Rocca Jean‐Louis 
Published: November 2007

AbstractDuring the last decade, silica monolithic capillaries have focused more and more attention on miniaturized separation techniques like CEC, nano‐LC, and chip electrochromatography owing to their unique chromatographic properties and to their possible in situ synthesis. Nevertheless, the preparation of conventional silica‐based individual monolithic columns is time consuming, owing to the individual steps involved, including the synthesis of the silica matrix and its subsequent on‐column chemical grafting. The hybrid organic–inorganic monoliths, whose synthesis is based on the polycondensation of siloxane with organosiloxane precursors, seems to be an attractive alternative since their direct synthesis leads to silica monoliths with organic moieties covalently linked to the inorganic silica matrix through hydrolytically stable Si–C bonds. This study describes the synthesis of hybrid monoliths using propyltrimethoxysilane (C3‐TriMOS) as a new kind of silica coprecursor to subsequently increase the hydrophobicity of the stationary phase. The influence of several experimental parameters (pH, gelation temperature, relative proportion of the precursors) on the textural (skeleton and macropore size) and chromatographic properties (efficiency, retention, and electroosmotic mobility) of the obtained monoliths are discussed. The results show that the optimal coprecursor incorporation is obtained after a postgelation step during which the condensation of the C3‐TriMOS coprecursor is favored by an increase in the pH medium. Thermal hydrolysis of urea previously added to the polymerization mixture allows this in situ pH increase. These hybrid monoliths present hydrophobic properties and allow the separation of test mixtures in the RP mode without any further modification. Moreover, they present excellent efficiencies since reduced plate height as low as 5 and 15 μm are obtained in the electrodriven mode (CEC) and in the hydrodynamic one (nano‐LC), respectively.
Comparison of nonporous silica‐based ion exchangers and monolithic ion exchangers in separations of inorganic anions
Authors: Kanatyeva Anastasiya Yu , Viktorova Elena N. , Korolev Alexander A. , Kurganov Alexander A. 
Published: November 2007

AbstractLow capacity anion exchangers for IC have been prepared by modification of nonporous uniformed silica MICRA microbeads and by modification of the organic polymeric monolithic matrixes preparedin situin quarz capillary. Due to the small particle size (1.5 μm) high‐performance adsorbents were prepared allowing to obtain up to 190 000 tp/m. However, the column possesses a very high back‐pressure and can be used in a short length up to 50 mm only to meet the requirements of conventional chromatographic equipment. An analysis of a test mixture of seven anions was completed within 3 min with a back column pressure of about 350 bar (HETP of about 5.5 μm, where HETP is the height equivalent to the theoretical plate). Monolithic capillary columns provide lower efficiencypercolumn unit length than MICRA columns; however, they can be used at a longer length because of their low flow resistance. Monolithic column ofca.40 cm length has workable pressure below 10 bar and allows separation of a five anions test mixture within less than 10 min. A better efficiency of monolithic column (HETP ˜75 μm) can be achieved at reduced flow rates when the analysis time is not a critical parameter.