bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Radical Addition of Alkyl Halides to 2‐Methylene‐1,3‐dithiane Monoxide as a Ketene Equivalent.
Authors: Yoshida Suguru , Yorimitsu Hideki , Oshima Koichiro 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Transformations of Tetrahydropyrido[4,3‐d]pyrimidnes [b]‐Condensed with Isoxazole, Thiazole, Thiadiazole, and Triazole Units under the Action of Activated Alkynes.
Authors: Voskressensky L. G. , Borisova T. N. , Ovcharov M. V. , Kulikova L. N. , Sorokina E. A. , Borisov R. S. , Varlamov A. V. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Acid‐Catalyzed Monodehydro‐2,5‐diketopiperazine Formation from N‐α‐Ketoacyl Amino Acid Amides.
Authors: Yamazaki Yuri , Mori Yuki , Oda Akiko , Okuno Yuka , Kiso Yoshiaki , Hayashi Yoshio 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Umpolung of Substituent Effect in Nucleophilic Aromatic Substitution. A New Approach to the Synthesis of N,N‐Disubstituted Melamines (Triazine Triskelions) under Mild Reaction Conditions.
Authors: Kolesinska Beata , Kaminski Zbigniew J. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Some Reactions of Functionalized Benzo[b]azonines and Bi(benzo[b]azonines).
Authors: Afsah Elsayed M. , Fadda Ahmed A. , Bondock Samir , Hammouda Mohamed M. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Novel and General Method for the Formation of S‐Aryl, Se‐Aryl, and Te‐Aryl Phosphorochalcogenoates.
Authors: Gao Yu‐Xing , Tang Guo , Cao Yu , Zhao Yu‐Fen 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Rumphellolide I, a Novel Caryophyllane‐Related Tetrahydropyran Norsesquiterpenoid from Gorgonian Coral Rumphella antipathies.
Authors: Sung Ping‐Jyun , Su Yin‐Di , Hwang Tsong‐Long , Chuang Li‐Fan , Chung Hsu‐Ming , Chen Jih‐Jung , Li Jan‐Jung , Fang Lee‐Shing , Wang Wei‐Hsien 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of 2‐Aminocyclopropyl Pyrrolidines from Glycoaminonitriles.
Authors: Declerck Delphine , Josse Solen , Nguyen Van Nhien Albert , Postel Denis 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Total Synthesis of the Putative Structure of Nagelamide D.
Authors: Bhandari Manojkumar R. , Sivappa Rasapalli , Lovely Carl J. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Enantioselective Synthesis of Both Enantiomers of Noranabasamine.
Authors: Miao Lei , DiMaggio Stassi C. , Shu Hong , Trudell Mark L. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Bioactive Phenylethanoids and Coumarines from Basalmocitrus cameroonensis.
Authors: Wansi Jean Duplex , Bavoua Judith Liliane Djouaka , Happi Emmanuel Ngeufa , Devkota Krishna Prasad , Lenta Bruno Ndjakou , Mesaik Muhammed Ahmed , Choudhary Muhammad Iqbal , Fomum Zacharias Tanee , Sewald Norbert 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Large Ring 1,3‐Bridged 2‐Azetidinones: Experimental and Theoretical Studies.
Authors: Urbach Allan , Dive Georges , Tinant Bernard , Duval Valerie , Marchand‐Brynaert Jacqueline 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Pochonins K—P; New Radicicol Analogues from Pochonia chlamydosporia var. chlamydosporia and Their WNT‐5A Expression Inhibitory Activities.
Authors: Shinonaga Hideki , Kawamura Yoji , Ikeda Akiko , Aoki Mari , Sakai Noriyoshi , Fujimoto Natsuko , Kawashima Akira 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Soluble Fluorene‐Polyimino Ketone.
Authors: Luo Xuan , Chang Guanjun , Wang Qingfu , Jiao Wenxiu , Zhang Lin , Lin Runxiong 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nitrogen, Phosphorus, Arsenic, Antimony and Bismuth
Authors: Lynam Jason M. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Angular Dipyridyl Ligands 2,5‐Bis(4‐pyridyl)‐1,3,4‐oxadiazole and Its 3‐Pyridyl Analogue as Building Blocks for Coordination Architectures: Assemblies, Structural Diversity, and Properties
Authors: Du Miao , Bu Xian‐He 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Design of Biologically Active Heparan Sulfate and Heparin Using an Enzyme‐Based Approach
Authors: Peterson Sherket , Frick Amber , Liu Jian 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthetic Efforts Toward Cyathane Diterpenoid Natural Products
Authors: Enquist John A. Jr. , Stoltz Brian M. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Small‐Molecule Inhibitors of Store‐Operated Calcium Entry
Authors: Sweeney Zachary K. , Minatti Ana , Button Donald C. , Patrick Silvia 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Artificial Restriction DNA Cutters as New Tools for Gene Manipulation
Authors: Katada Hitoshi , Komiyama Makoto 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Recent Advances on Cyclopeptide‐Based Glycoclusters
Authors: Renaudet Olivier 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Hydrolytic Decomposition of Glycosides in Aqueous Acids
Authors: Mikkola Satu , Oivanen Mikko 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: From Sugars to Modified Nucleosides
Authors: Hyrosova Eva , Fisera Lubor , Medvecky Michal , Reissig Hans‐Ulrich , Al‐Harrasi Ahmed , Koos Miroslav 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Evaluation of Anticancer Vaccine Candidates: C‐Glycoside Analogues of STn and PSA
Authors: Weiwer Michel , Huang Fei , Chen Chi‐Chang , Yuan Xuejun , Tokuzaki Kazuo , Tomiyama Hiroshi , Linhardt Robert J. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: General Approach to the Total Synthesis of Macroline‐Related Sarpagine and Ajmaline Alkaloids
Authors: Edwankar Chitra R. , Edwankar Rahul V. , Rallapalli Sundari , Cook James M. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Constituents and Bioactivities of Clausena excavata
Authors: Kongkathip Ngampong , Kongkathip Boonsong 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Discovery of Batrachotoxin: The Launch of the Frog Alkaloid Program at NIH
Authors: Garraffo H. Martin , Spande Thomas F. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Bases and Basic Materials in Industrial and Environmental Chemistry: Commercial Processes
Authors: Busca Guido 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Inertial Rotation and Matrix Interaction Effects on the EPR Spectra of Methyl Radicals Isolated in ′Inert′ Cryogenic Matrices
Authors: Benetis Nikolas P. , Dmitriev Yurij 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sequencing Single DNA Molecules in Real Time
Authors: Ibach Jenny , Brakmann Susanne 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chemical Imaging of Spatial Heterogeneities in Catalytic Solids at Different Length and Time Scales
Authors: Weckhuysen Bert M. 
Published: July 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
The pyrolysis of (−)‐(S)‐nicotine: Racemization and decomposition
Authors: Clayton Peter , Lu Annhelen , Bishop Louise 
Published: July 2009

AbstractThe pyrolytic behaviour of (−)‐(S)‐nicotine in methanol was investigated using on‐line pyrolysis GC/MS to establish whether racemization to the R(+) antipode occurs and to identify other products of pyrolysis. The conditions used included pyrolysing the sample for 15 seconds in an atmosphere of 9% oxygen in nitrogen (275ml/min total flow) across the temperature range of 200°C–1000°C. A chiral Cyclodex‐B analytical column (30m × 0.25mm i.d. × 0.25 μm film thickness) was used to separate the enantiomers of nicotine, although the two enantiomer peaks were not baseline resolved. The results of the experiment shows that there is no increase in (+)‐(R)‐nicotine levels across a wide temperature range. This suggests that the elevated levels of (+)‐R‐nicotine observed in tobacco smoke (compared to tobacco leaf material) are not due to the pyrolytic auto‐racemization of (−)‐(S)‐nicotine but are a result of more complex interactions between (−)‐(S)‐nicotine and other smoke components. The pyrolysis of isotopically labelled nicotine established that nicotine undergoes thermal decomposition to β‐nicotyrine which in turn may decompose to other products. Chirality 2010. © 2009 Wiley‐Liss, Inc.
On circular dichroism and the separation between chromophore and chiral center: The near carbon K‐edge X‐ray absorption and circular dichroism spectra of noradrenaline and L‐DOPA
Authors: Villaume Sebastien , Norman Patrick 
Published: July 2009

AbstractThe near carbon K‐edge X‐ray absorption and circular dichroism spectra of noradrenaline (neutral and protonated forms) and L‐DOPA (protonated form) have been determined with use of the complex polarization propagator method in conjunction with Kohn‐Sham density functional theory. A Coulomb attenuated exchange‐correlation functional and London atomic orbitals have been employed to address the issues of hole‐electron interactions and gauge‐origin dependence of the magnetic‐dipole operator, respectively. Results show that the characteristics of the chromophore part of the circular dichroism spectra are shared for all three considered systems, whereas protonation qualitatively alters the part of the spectrum assigned to the chiral side chain. The comparatively larger spatial separation of chromophore and chiral center in L‐DOPA inflicts larger differences in spectral intensities between the chromophore and chiral center part of the circular dichroism spectra. Chirality 21:E13–E19, 2009. © 2009 Wiley‐Liss, Inc.
Determination of enantiomerization barriers of hypericin and pseudohypericin by dynamic high‐performance liquid chromatography on immobilized polysaccharide‐type chiral stationary phases and off‐column racemization experiments
Authors: Ciogli Alessia , Bicker Wolfgang , Lindner Wolfgang 
Published: July 2009

AbstractDirect enantiomer separation of hypericin, pseudohypericin, and protohypericin was accomplished by high‐performance liquid chromatography (HPLC) using immobilized polysaccharide‐type chiral stationary phases (CSPs). Enantioselectivities up to 1.30 were obtained in the polar‐organic elution mode whereby for hypericin and pseudohypericin Chiralpak IC [chiral selector being cellulose tris(3,5‐dichlorophenylcarbamate)] and for protohypericin Chiralpak IA (chiral selector being the 3,5‐dimethylphenylcarbamate of amylose) gave favorable results. Enantiomers were distinguished by on‐line electronic circular dichroism detection. Optimized enantioselective chromatographic conditions were the basis for determining stereodynamic parameters of the enantiomer interconversion process of hypericin and pseudohypericin. Rate constants delivered by computational simulation of dynamic HPLC elution profiles (stochastic model, consideration of peak tailing) were used to calculate averaged enantiomerization barriers (ΔG) of 97.6–99.6 kJ/mol for both compounds (investigated temperature range 25–45°C). Complementary variable temperature off‐column (i.e., in solution) racemization experiments delivered ΔG = 97.1–98.0 kJ/mol (27–45°C) for hypericin and ΔG = 98.9–101.4 kJ/mol (25–55°C) for pseudohypericin. An activation enthalpy of ΔH# = 86.0 kJ/mol and an activation entropy of ΔS# = −37.7 J/(K mol) were calculated from hypericin racemization kinetics in solution, whereas for pseudohypericin these figures amounted to 74.1 kJ/mol and −82.6 J/(K mol), respectively. Although the natural phenanthroperylene quinone pigments hypericin and pseudohypericin as well as their biological precursor protohypericin are chiral and can be separated by enantioselective HPLC low enantiomerization barriers seem to prevent the occurrence of an excess of one enantiomer under typical physiological conditions—at least as long as stereoselective intermolecular interactions with other chiral entities are absent. Chirality 2010. © 2009 Wiley‐Liss, Inc.
Relationship Between Integrated Backscatter and Atrial Fibrosis in Patients with and Without Atrial Fibrillation Who Are Undergoing Coronary Bypass Surgery
Authors: Wang Guo‐Dong , Shen Lu‐Hua , Wang Lei , Li Hong‐Wei , Zhang Yu‐Chen , Chen Hui 
Published: July 2009

AbstractObjectiveThe purpose of this study was to investigate the relationship between the integrated backscatter (IBS) and atrial fibrosis, with and without atrial fibrillation (AF), in patients who are undergoing coronary bypass grafting (CABG).MethodsA total of 74 patients (18 preoperative AF, 56 sinus rhythm [SR]) with coronary artery disease undergoing CABG were included. The IBS of the left atrium (LA) posterior wall was acquired from transthoracic echocardiographic examination before surgery. Samples from the LA appendage were collected after opening the pericardium and quantitative assessment of atrial fibrosis was performed with collagen volume fraction (CVF). Postoperative AF was monitored with electrocardiographic telemetry in‐hospital.ResultsThere was a positive relationship between age, IBS of the left atrial posterior wall indexed by pericardium (IBS%), and CVF by multivariate linear regression analysis (r = 0.612, p = 0.034; r = 0.887, p < 0.001 respectively). The value of IBS%, LA dimension (LAD), and CVF values were higher in patients with preoperative AF than in patients with preoperative SR (p < 0.001, p < 0.01, p < 0.001, respectively). The value of age, IBS%, and CVF in patients with postoperative AF were higher than in patients without postoperative AF (p = 0.029, p < 0.001, p = 0.001 respectively).ConclusionsIBS of the LA posterior wall indexed by pericardium provides an objective quantitative measure of atrial fibrosis and correlates with postoperative AF in patients undergoing CABG surgery. Copyright © 2009 Wiley Periodicals, Inc.