bluuebunny/crossref_metadata_2025_split huggingface dataset:
One‐Pot Synthesis of Pyrazole‐5‐carboxylates by Cyclization of Hydrazone 1,4‐Dianions with Diethyl Oxalate.
Authors: Dang Tuan Thanh , Dang Tung Thanh , Langer Peter 
Published: August 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 Symmetrically and Unsymmetrically Substituted N,N′‐Diarylimidazolin‐2‐ones by Copper‐Catalyzed Arylamidation under Microwave‐Assisted and Conventional Conditions.
Authors: Hafner Thomas , Kunz Doris 
Published: August 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.
5‐Arylidene Derivatives of Meldrum′s Acid as Synthons in Pyrano[4,3‐b]pyran Synthesis.
Authors: Palasz Aleksandra , Jelska Katarzyna , Ozog Monika , Serda Pawel 
Published: August 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 Facile Synthetic Route to 2H‐Chromenes: Reconsideration of the Mechanism of the DBU‐Catalyzed Reaction Between Salicylic Aldehydes and Ethyl 2‐Methylbuta‐2,3‐dienoate.
Authors: Dai Lun‐Zhi , Shi Yong‐Ling , Zhao Gui‐Ling , Shi Min 
Published: August 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.
Radical 6‐endo‐trig Cyclization of β,β‐Difluoro‐o‐isocyanostyrenes: A Facile Synthesis of 3‐Fluoroquinolines and Their Application to the Synthesis of 11‐Alkylated Cryptolepines.
Authors: Mori Takashi , Ichikawa Junji 
Published: August 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 Substituted 1,2‐Dihydroisoquinolines Through the Reaction of Isoquinoline and Dimethyl Acetylenedicarboxylate in the Presence of Amides.
Authors: Yavari Issa , Ghazanfarpour‐Darjani Majid , Sabbaghan Maryam , Hossaini Zinatossadat 
Published: August 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 Cycloisomerization—6π‐Cyclization: A Novel Route to Pyridines.
Authors: Trost Barry M. , Gutierrez Alicia C. 
Published: August 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.
Domino Metathesis of 3,6‐Dihydro‐1,2‐oxazine: Access to Isoxazolo[2,3‐a]pyridin‐7‐ones.
Authors: Calvet Geraldine , Blanchard Nicolas , Kouklovsky Cyrille 
Published: August 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.
Organic Synthesis in Water: 1,3‐Dipolar Cycloaddition Reactions at Ambient Temperature with Aqueous Suspensions of Solid Reactants.
Authors: Butler Richard N. , Coyne Anthony G. , Moloney Eamon M. 
Published: August 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 Condensed and Uncondensed Tetrazolo[1,5‐b][1,2,4]triazines as Potential Antimicrobial Agents.
Authors: Taha Mamdouh A. M. 
Published: August 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.
Bicyclic β‐Hydroxytetrahydrofurans as Precursors of Medium Ring Keto‐Lactones.
Authors: Ferraz Helena M. C. , Longo Luiz S. Jr. 
Published: August 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 Diastereoselective Electrophilic Fluorination of Cyclic syn‐β‐Hydroxysilanes.
Authors: Purser Sophie , Wilson Christopher , Moore Peter R. , Gouverneur Veronique 
Published: August 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 Hetero Diels—Alder Reaction of Selenoaldehydes with Pentavalent Phosphole Chalcogenides.
Authors: Segi Masahito , Kawaai Katsuhiko , Honda Mitsunori , Fujinami Shuhei 
Published: August 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.
Hyperconjugate Effect of C—Ge Bonds: Synthesis of Multisubstituted Alkenylgermanes via Torquoselective Olefination of Acylgermanes with Ynolates.
Authors: Shindo Mitsuru , Matsumoto Kenji , Shishido Kozo 
Published: August 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.
Total Synthesis of Plusbacin A3: Depsipeptide Antibiotic Active Against Vancomycin‐Resistant Bacteria.
Authors: Wohlrab Aaron , Lamer Ryan , VanNieuwenhze Michael S. 
Published: August 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.
Thalassospiramides A (I) and B (II), Immunosuppressive Peptides from the Marine Bacterium Thalassospira sp.
Authors: Oh Dong‐Chan , Strangman Wendy K. , Kauffman Christopher A. , Jensen Paul R. , Fenical William 
Published: August 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 1,3,6‐Trisubstituted 2,4‐Dioxohexahydropyrimidines: A Convenient Stereoselective Synthesis from Aspartic Acid Derivatives.
Authors: Patino‐Molina Rosario , Cubero‐Lajo Ivan , Perez de Vega M. Jesus , Garcia‐Lopez M. Teresa , Gonzalez‐Muniz Rosario 
Published: August 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 β‐C‐galacto‐Pyranosides with Fluorine on the Pseudoanomeric Substituent.
Authors: Tony Kurissery A. , Denton Richard W. , Dilhas Anna , Jimenez‐Barbero Jesus , Mootoo David R. 
Published: August 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.
Total Syntheses of (+)‐Lyconadin A and (‐)‐Lyconadin B.
Authors: Beshore Douglas C. , Smith Amos B. III 
Published: August 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.
Concise Total Synthesis of (‐)‐Calycanthine (I), (+)‐Chimonanthine (IIa), and (+)‐Folicanthine (IIb).
Authors: Movassaghi Mohammad , Schmidt Michael A. 
Published: August 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.
New Emivirine (MKC‐442) Analogues Containing a Tetrahydronaphthalene at C‐6 and Their anti‐HIV Activity.
Authors: Therkelsen Frans , Joergensen Per T. , Nielsen Claus , Pedersen Erik B. 
Published: August 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 Total Synthesis of (‐)‐Pironetin Employing the SAMP/RAMP Hydrazone Methodology.
Authors: Enders Dieter , Shulut Sylvie , Steinbusch Daniel , Herrbach Audrey 
Published: August 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.
Structures of New Cytotoxic Antibiotics, Piericidins C7 and C8.
Authors: Hayakawa Yoichi , Shirasaki Shingo , Kawasaki Takashi , Matsuo Yoshihide , Adachi Kyoko , Shizuri Yoshikazu 
Published: August 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.
Facile Synthesis of γ‐Alkylidenebutenolides.
Authors: Xu Hai‐Wei , Wang Jun‐Feng , Liu Gai‐Zhi , Hong Guang‐Feng , Liu Hong‐Min 
Published: August 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.
Enantioselective Total Synthesis of Macrolide Antitumor Agent (‐)‐Lasonolide A (I).
Authors: Ghosh Arun K. , Gong Gangli 
Published: August 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.
External Magnetic Field‐Induced Mesoscopic Organization of Fe3O4 Pyramids and Carbon Sheets.
Authors: Pol S. V. , Pol V. G. , Gedanken A. , Felner I. , Sung M.‐G. , Asai S. 
Published: August 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.
Magnetic Random Access Memory (MRAM)
Authors: Zheng Yuankai , Wu Yihong , Li Kebin , Qiu Jinjun , Han Guchang , Guo Zaibing , Luo Ping , An Lihua , Liu Zhiyong , Wang Li , et al. et al. 
Published: August 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 Critical Review of Electronic Effects in Enediamido and α‐Diimino Complexes of the Group 4 Metals
Authors: Mealli Carlo , Ienco Andrea , Phillips Andrew D. , Galindo Agustin 
Published: August 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 Synthesis of Chromenes, Chromans, Coumarins and Related Heterocycles via Tandem Reactions of Salicylic Aldehydes or Salicylic Imines with α,β‐Unsaturated Compounds
Authors: Shi Yong‐Ling , Shi Min 
Published: August 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.
Cyclic Porphyrin Arrays as Artificial Photosynthetic Antenna: Synthesis and Excitation Energy Transfer
Authors: Nakamura Yasuyuki , Aratani Naoki , Osuka Atsuhiro 
Published: August 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.
Design of Fluorescent Materials for Chemical Sensing
Authors: Basabe‐Desmonts Lourdes , Reinhoudt David N. , Crego‐Calama Mercedes 
Published: August 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.
Controlling Competing Pathways in Palladium‐Catalyzed Tandem/Domino Reactions of Hindered Grignard Reagents with 1,2‐Dihaloarenes and 2‐Haloaryl Tosylates
Authors: Hu Qiao‐Sheng 
Published: August 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.
Circular dichroism of diglycosyl dichalcogenides in solution and solid state
Authors: Kurtán Tibor , Pescitelli Gennaro , Salvadori Piero , Kenéz Ágnes , Antus Sándor , Szilágyi László , Illyés Tünde‐zita , Szabó Ildikó 
Published: August 2007

AbstractSolution and solid‐state CD spectra of nine peracetylated and deacetalyted diglycosyl disulfides were measured to study the relationship between the low‐energy CD transitions (n1→σ*SS and n2→σ*SS) and helicity of the inherently chiral disulfide chromophore as perturbed by chiral carbohydrate moieties. The solid‐state CD spectra were directly correlated with the reported X‐ray structures of Ac4GlcSSGlcAc4 and Ac4GlcSSGalAc4, and the CD data revealed that all the disulfides have M helicity with C1SSC1′ dihedral angles −90° < φ < 0° both in solution and in the solid state. A TDDFT CD study was carried out on dimethyl diselenide which confirmed that the same quadrant rule is relevant between the signs of the low‐energy CD transitions and the diselenide torsional angle as formulated previously for the disulfide chromophore. The CD spectra of Ac4GlcSeSeGlcAc4 measured in solution and in the solid state were correlated with its X‐ray structure and reproduced well by TDDFT CD calculations performed on its tetra‐O‐acetyl derivative. Chirality, 2008. © 2007 Wiley‐Liss, Inc.
Spectroscopic properties of the nonplanar amide group: A computational study
Authors: Bednárová Lucie , Maloň Petr , Bouř Petr 
Published: August 2007

AbstractExperimental studies suggest that amide bond may significantly deviate from planar arrangement even in linear peptides and proteins. In order to find out the extent to which such deviation may influence principal amide spectroscopic properties, we conducted a computational study of nonplanar N‐methylacetamide (NMA) conformers. Vibrational absorption, Raman, and electronic spectra including optical activity were simulated with ab initio and density functional theory (DFT) methods. According to the results, small nonplanarity deviations may be detectable by nonpolarized spectroscopic techniques, albeit as subtle spectral changes. The optical activity methods, such as the vibrational circular dichroism (VCD), Raman optical activity (ROA), and electronic circular dichroism (CD, ECD), provide enhanced information about the amide nonplanarity, because planar amide is not optically active (chiral). For VCD, however, the inherently chiral contribution in most peptides and proteins most probably provides very weak signal in comparison with other contributions, such as the dipolar coupling. For the electronic CD, the nonplanarity contribution is relatively big and causes a strong CD couplet in the n–π* absorption region accompanied by a red frequency shift. The π–π* CD region is relatively unaffected. The ROA spectroscopy appears most promising for the nonplanarity detection and the inherent chiral signal may dominate entire spectral parts. The amide I and III vibrational ROA bands are most challenging experimentally because of their relatively weak coupling to other peptide vibrations. Chirality 2007. © 2007 Wiley‐Liss, Inc.
The velocity of microtubule sliding: Its stability and load dependency
Authors: Ishijima Sumio 
Published: August 2007

AbstractIt is now well understood that ATP‐driven active sliding between the doublet microtubules in the sperm axoneme generates flagellar movement. However, much remains to be learned about how this movement is controlled. Detailed analyses of the flagellar beating of the mammalian spermatozoa revealed that there were two beating modes at a constant rate of microtubule sliding: that is, a nearly constant‐curvature beating in nonhyperactivated spermatozoa and a nearly constant‐frequency beating in hyperactivated spermatozoa. The constant rate of microtubule sliding suggests that the beat frequency and waveform of the flagellar beating are dependently regulated. Comparison of the sliding velocity of several mammalian and sea urchin sperm flagella with their mechanical property clarified that the sliding velocity of the microtubule was determined by the stiffness of the flagellum at its base, and that its relationship was expressed by a logarithmic equation that is similar to the classical force‐velocity equation of the muscle contraction. Data from sea urchin spermatozoa also satisfied the equation, suggesting that the same microtubule sliding system functions in both the mammalian and echinoderm spermatozoa. Cell Motil. Cytoskeleton 2007. © 2007 Wiley‐Liss, Inc.
Mammalian cilia function is independent of the polymeric state of tubulin glycylation
Authors: Dossou Starlette J. Y. , Bré Marie‐Hélène , Hallworth Richard 
Published: August 2007

AbstractPolyglycylation is a polymeric post‐translational modification of tubulin that is ubiquitous and widely present in cilia and flagella. It consists of the addition of highly variable numbers of glycyl residues as side chains onto the γ carboxyl group of specific glutamyl residues at the C‐termini of α‐ and β‐tubulin. The function of polyglycylation is poorly understood, however, studies in Tetrahymena have shown that the mutation of polyglycylation sites in β‐tubulin resulted in axonemal abnormality or lethality. This suggests that polyglycylation is functionally essential in protists. We hypothesize that polyglycylation is also essential in mammalian cilia and that the extent of polyglycylation has functional significance. In this study, we examined polyglycylation states in ciliated tissues and in mouse tracheal epithelial cell cultures. We utilized two antibodies, TAP 952 and AXO 49, which recognize glutamyl sites possessing monomeric glycylation sites and glutamyl sites possessing polymeric glycylation sites, respectively. Monomeric glycylation sites were observed in cilia of all the ciliated tissues examined but were invariably excluded from the distal tips. In contrast, polymeric glycylation sites were rare, but when observed, they were localized at the bases of cilia. During ciliogenesis, in epithelial cell cultures, monomeric glycylation sites were observed, but the extent of polymeric glycylation sites were variable and were only observed during the early stages of the cultures. Our observations suggest that while monomeric glycylation sites are universal and likely essential in mammalian cilia, polymeric glycylation sites are not required for ciliary beating. Rather, our observations suggest that the number of added glycyl residues increases progressively from the tips of cilia toward their bases. Cell Motil. Cytoskeleton 2007. © 2007 Wiley‐Liss, Inc.
BRAFV600E mutation and p27kip1 expression in papillary carcinomas of the thyroid ≤1 cm and their paired lymph node metastases
Authors: Rodolico Vito , Cabibi Daniela , Pizzolanti Giuseppe , Richiusa Pierina , Gebbia Nicola , Martorana Anna , Russo Antonio , Amato Marco C. , Galluzzo Aldo , Giordano Carla 
Published: August 2007

AbstractBACKGROUND.BRAFV600E mutation and p27kip1 expression have been introduced as novel indicators that may predict prognosis in different tumors, as well as in papillary thyroid carcinomas.METHODS.Tissue samples from 214 consecutive patients who underwent total or near‐total thyroidectomy with histological diagnosis of papillary thyroid carcinoma (PTC) ≤1 cm were analyzed for BRAFV600E mutation by a real‐time, allele‐specific amplification and for p27kip1 expression by immunohistochemistry.RESULTS.The BRAFV600E mutation was detected in 88 of the tumors examined, with significant differences between groups with and without lymph node (LN) metastases; the mean age of patients with BRAFV600E mutation was significantly higher than that of patients without mutations. A significant association was found between low p27Kip1 protein expression and multifocality, bilaterality, and extrathyroidal extension, in addition to LN metastasis. In 42 cases with LN metastases, 23 harbored the BRAFV600E mutation in the metastatic tumor and presented a wider diameter of the largest metastatic area, a higher number of involved LNs, and a higher percentage of metastatic lesions with extracapsular extension of LN (ECE‐LN). A significantly lower mean value of p27Kip1 was observed in LNs harboring the BRAFV600E mutation and in ECE‐LN; an inverse correlation was found between p27Kip1 and the number of metastatic LNs, as well as the diameter of the largest metastatic area in LN.CONCLUSIONS.The authors' data suggested that BRAFV600E mutation and p27Kip1 down‐regulation in cancer cells of PTC ≤1 cm may be factors that facilitate tumor‐cell growth and progression once these are seeded in the LNs. Cancer 2007. © 2007 American Cancer Society.
Management of prostate cancer recurrences after radiation therapy‐brachytherapy as a salvage option
Authors: Allen Gregory W. , Howard Andrew R. , Jarrard David F , Ritter Mark A. 
Published: August 2007

AbstractDepending on initial prognostic factors, an estimated 10%–60% of men who undergo definitive radiation therapy for prostate cancer may experience a biochemical recurrence. Even though hormonal therapy is standard for metastatic recurrences, no consensus exists on optimal salvage therapy for those recurrences thought confined to the prostate. Salvage treatment options for these local recurrences have historically been limited to salvage prostatectomy, hormonal therapy, or cryotherapy. Salvage prostate brachytherapy, however, uses a widely available technique and may provide another option for attaining disease control in patients with localized failures, although only about 110 cases have been reported in the literature. In this report, the authors have described their own series of salvage brachytherapy cases as well as presented a review of other such series reported in the literature. In addition, the authors included a comprehensive review of published experiences with surgery and cryotherapy as salvage options. It appears that salvage brachytherapy, when combined with careful patient selection, is at least as effective as other salvage options with comparable or potentially fewer treatment‐related side effects. Cancer 2007. © 2007 American Cancer Society.