bluuebunny/crossref_metadata_2025_split huggingface dataset:
Highly Enantioselective Cyanation of Aldehydes Catalyzed by a Multicomponent Titanium Complex.
Authors: Gou Shaohua , Chen Xiaohong , Xiong Yan , Feng Xiaoming 
Published: October 2006

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.
Solid Silica Sulfuric Acid (SSA) as a Novel and Efficient Catalyst for Acetylation of Aldehydes and Sugars.
Authors: Wu Hui , Shen Yang , Fan Li‐yan , Wan Yu , Shi Da‐qing 
Published: October 2006

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.
SiO2‐TBD as New Heterogeneous Catalyst for the Nef Conversion of Secondary Niroalkanes under Neat Conditions.
Authors: Ballini Roberto , Fiorini Dennis , Maggi Raimondo , Oro Chiara , Palmieri Alessandro , Sartori Giovanni 
Published: October 2006

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.
Rhodium‐Catalyzed Intermolecular Chelation Controlled Alkene and Alkyne Hydroacylation: Synthetic Scope of β‐S‐Substituted Aldehyde Substrates.
Authors: Willis Michael C. , Randell‐Sly Helen E. , Woodward Robert L. , McNally Steven J. , Currie Gordon S. 
Published: October 2006

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 Tandem Reactions of Ethyl Acetoacetate with Aromatic Aldehydes: Product‐ and Stereoselective Formation of Highly Functionalized Cyclohexanones.
Authors: Srinivasan Murugesan , Perumal Subbu 
Published: October 2006

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.
Beneficial Effect of TMSCl in the Lewis Acid‐Mediated Carboxylation of Aromatic Compounds with Carbon Dioxide.
Authors: Nemoto Koji , Yoshida Hiroki , Suzuki Yutaka , Morohashi Naoya , Hattori Tetsutaro 
Published: October 2006

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.
One‐Pot Wittig Reactions in Water and in the Presence of a Surfactant.
Authors: Orsini Fulvia , Sello Guido , Fumagalli Tiziano 
Published: October 2006

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.
Substituent‐Induced Regioselective Synthesis of 1,2‐Teraryls and Pyrano[3,4‐c]pyran‐4,5‐diones from 2H‐Pyran‐2‐ones.
Authors: Pratap Ramendra , Kumar Brijesh , Ram Vishnu Ji 
Published: October 2006

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.
Diversity‐Oriented Synthesis of 2,5‐Disubstituted Tetrahydrofurans Based on a “Cyclization‐Hydrogenation‐Substitution” Strategy.
Authors: Freifeld Ilia , Holtz Edith , Dahmann Georg , Langer Peter 
Published: October 2006

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 Pyrrolidines via Palladium(II)‐Catalyzed Aerobic Oxidative Carboamination of Butyl Vinyl Ether and Styrenes with Allyl Tosylamides.
Authors: Scarborough Christopher C. , Stahl Shannon S. 
Published: October 2006

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 2‐Aroylmethylidene‐6‐hydroxy‐2,3‐dihydroindol‐3‐ones.
Authors: Gein V. L. , Demeneva A. V. , Rassudikhina N. A. , Vakhrin M. I. 
Published: October 2006

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.
3‐Bromopropenyl Methylcarbonate Organic Synthesis: A Straightforward Approach to 4,5‐Disubstituted 5‐Vinyl‐1,3‐dioxolan‐2‐ones.
Authors: Lombardo Marco , Pasi Filippo , Trombini Claudio 
Published: October 2006

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 X‐Ray Crystal Structure of Pyrrolo[1,2‐a]benzimidazoles.
Authors: Awadallah Adel M. , Seppelt Konrad , Shorafa Hashem 
Published: October 2006

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 Synthesis of α‐Hydroxydihydropyrans Containing the CF3 Group.
Authors: Nenajdenko Valentine G. , Druzhinin Sergey V. , Balenkova Elizabeth S. 
Published: October 2006

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, Enzymatic Inhibition, and Cancer Cell Growth Inhibition of Novel δ‐Lactam‐Based Histone Deacetylase (HDAC) Inhibitors.
Authors: Han Gyoonhee , et al. et al. 
Published: October 2006

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.
Microwave Assisted Facile Synthesis of Amino Pyrimidines Bearing Benzofuran and Investigation of Their Antimicrobial Activity.
Authors: Kumar D. B. Aruna , Prakash G. K. , Kumaraswamy M. N. , Nandeshwarappa B. P. , Sherigara B. S. , Mahadevan K. M. 
Published: October 2006

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.
Rh(I)‐Catalyzed Hydroacylation/Cycloisomerization Cascade: Synthesis of (.+‐.)‐Epiglobulol (VII).
Authors: Oonishi Yoshihiro , Taniuchi Ai , Mori Miwako , Sato Yoshihiro 
Published: October 2006

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.
Siamenols A—D, Four New Coumarins from Mammea siamensis.
Authors: Prachyawarakorn Vilailak , Mahidol Chulabhorn , Ruchirawat Somsak 
Published: October 2006

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.
Fullerene (C60) Immunoconjugates: Interaction of Water‐Soluble C60 Derivatives with the Murine anti‐gp240 Melanoma Antibody.
Authors: Ashcroft Jared M. , Tsyboulski Dmitri A. , Hartman Keith B. , Zakharian Tatiana Y. , Marks John W. , Weisman R. Bruce , Rosenblum Michael G. , Wilson Lon J. 
Published: October 2006

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.
Amorphous and Nanocrystalline Soft Magnetic Materials: Tailoring of Magnetic Properties, Magnetoelastic and Transport Properties
Authors: Zhukov Arcady , Gonzalez Julian 
Published: October 2006

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.
Natural history of urothelial inverted papilloma
Authors: Sung Ming‐Tse , MacLennan Gregory T. , Lopez‐Beltran Antonio , Montironi Rodolfo , Cheng Liang 
Published: October 2006

AbstractBACKGROUND.Inverted urothelial papilloma is an uncommon urothelial neoplasm. Although it is traditionally regarded as a benign tumor, conflicting data on multiplicity, recurrence rate, and association with urothelial carcinoma have left uncertainties concerning its biologic behavior.METHODS.The authors analyzed the clinicopathological characteristics of 75 cases of inverted papilloma in the urinary tract without prior or concurrent urothelial carcinoma to determine its biologic behavior and prognosis, and to correlate these findings with surveillance strategies.RESULTS.These patients ranged in age from 26 to 85 years (mean, 60 years). Of the 46 patients for whom tobacco use history was available, 28 gave a history of smoking. Inverted papillomas were located in the urinary bladder (67 cases), prostatic urethra (4 cases), and ureter (4 cases). The majority of vesical tumors arose from the trigone or near the bladder neck. Common presenting complaints included hematuria, dysuria, and irritative voiding symptoms. In 1 case of vesical inverted papilloma, there was a recurrence. All other patients were free of tumor recurrence or progression during a mean follow‐up of 68 months (range, 2–240 months).CONCLUSIONS.Both the extremely low incidence of tumor recurrence (1%) and strikingly favorable prognosis suggest that inverted urothelial papilloma, when diagnosed according to strictly defined criteria, is a benign urothelial neoplasm not related to urothelial carcinoma. Therefore, complete transurethral resection of inverted papilloma is adequate surgical therapy, and surveillance protocols as rigorous as those employed in the management of urothelial carcinoma seem unnecessary. Cancer 2006. © 2006 American Cancer Society.
Timing of adjuvant chemotherapy initiation after surgery for stage III colon cancer
Authors: Hershman Dawn , Hall Michael J. , Wang Xiaoyan , Jacobson Judith S. , McBride Russell , Grann Victor R. , Neugut Alfred I. 
Published: October 2006

AbstractBACKGROUND.An important advance in medical oncology has been the use of adjuvant chemotherapy for lymph node‐positive colon cancer. However, to the authors' knowledge, the effect of the interval between surgery and the initiation of chemotherapy on survival has not been investigated.METHODS.The authors analyzed predictors and outcomes of time intervals to treatment after surgery among patients older than 65 years who were diagnosed with stage III colon cancer between 1992 and 1999 using Surveillance, Epidemiology, and End Results (SEER)‐Medicare data. Linear and logistic regression analyses were used to model predictors of delay, and Cox proportional hazards models were used to analyze the impact of treatment timing on survival.RESULTS.Among 4382 patients with colon cancer, 1122 patients (26%) began adjuvant chemotherapy within 1 month, 2391 patients (55%) began adjuvant chemotherapy in 1 to 2 months, 454 patients (10%) began adjuvant chemotherapy in 2 to 3 months, and 415 patients (9%) began adjuvant chemotherapy ≥3 months after surgery. Intervals of ≥3 months (delay) were associated with older age, increased comorbid conditions, well/moderately differentiated grade, and being unmarried. Colon cancer‐specific mortality was associated with a delay in the initiation of chemotherapy (hazards ratio [HR], 1.48; 95% confidence interval [95% CI], 1.15–1.92), advanced age, increased comorbidity, poorly differentiated tumor grade, the presence of ≥4 positive lymph nodes, and undergoing surgery in a nonteaching hospital. All‐cause mortality was associated with intervals >2 months between surgery and chemotherapy (2 to 3 months: HR, 1.41; 95% CI, 1.15–1.74; ≥3 months: HR, 1.62; 95% CI, 1.31–1.99) compared with <1 month.CONCLUSIONS.In the older population that was studied, only 9% of patients initiated adjuvant chemotherapy >3 months after the date of curative surgery. However, delay in initiation was associated with both cancer‐specific and all‐cause mortality. Determining whether these results were because of chemotherapy timing or other associated factors will require further study. Cancer 2006. © 2006 American Cancer Society.
Lay patient navigator program implementation for equal access to cancer care and clinical trials
Authors: Steinberg Michael L. , Fremont Allen , Khan David C. , Huang David , Knapp Herschel , Karaman Deborah , Forge Nell , Andre Keith , Chaiken Lisa M. , Streeter Oscar E. 
Published: October 2006

AbstractBACKGROUND.Disparities in cancer detection, treatment, and outcomes among racial/ethnic minorities and low‐income patients are well documented. One way to reduce these disparities is to use patient navigators to address barriers to care. However, little information about optimal characteristics of navigator programs or considerations for those interested in setting up such programs is available.METHODS.The design and implementation of a patient navigator program for underserved cancer patients in an urban, nonacademic community hospital setting is described. The program, which used lay navigators, was conceived as a component of the Urban Latino African American Cancer (ULAAC) Disparities Project in South Los Angeles, a National Cancer Institute (NCI)‐sponsored project to improve cancer care and clinical trial access for minority and low‐income patients.RESULTS.Careful initial planning, including input from a community advisory committee, was essential to smooth program implementation. Thirty‐one volunteers completed navigator training in the program's first year of operation. Of 135 patients offered navigation services, 75 (56%) accepted, and preliminary feedback from patients, navigators, and providers suggests high levels of satisfaction with navigation. Standardized templates used by navigators and staff to record key information are proving helpful for monitoring quality and outcomes (such as effectiveness in addressing specific barriers to care) and continually improving the program.CONCLUSIONS.The ULAAC program represents a viable model for developing lay navigator programs in community hospitals. Preliminary assessments suggest that the program has a positive effect on minority and low‐income cancer patients' experience with care and reduces barriers to care. Additional time and research are needed, however, to fully assess the impact on care and outcomes. Cancer 2006. © 2006 American Cancer Society.
Ectopic expression of Tollo/Toll‐8 antagonizes Dpp signaling and induces cell sorting in the Drosophila wing
Authors: Kim Sangjoon , Chung SeYeon , Yoon Jeongsook , Choi Kwang‐Wook , Yim Jeongbin 
Published: October 2006

AbstractThe wing imaginal disc of Drosophila consists of the primordia for the adult wing and the body wall. The zinc‐finger transcription factor Teashirt (Tsh) is expressed in the region proximal to the wing primordium and regulates the formation of the wing‐body wall boundary. Here, we report that Tollo/Toll‐8, a member of Toll family transmembrane proteins, is also expressed proximal to the wing domain. Ectopic expression of Decapentaplegic (Dpp), a morphogen for wing development, represses tollo expression in the proximal domain. Likewise, misexpression of Tollo in the presumptive wing strongly antagonizes the effects of Dpp signaling. The extracellular domain of Tollo containing the Leucine‐Rich Repeats (LRR) is required for the inhibition of Dpp signaling in the wing. Furthermore, clones of cells with Tollo overexpression are sorted out from the surrounding wild‐type cells, resulting in the formation of epithelial folds around the clone boundaries. Tsh is ectopically induced at the border of Tollo‐expressing clones. Despite the strong effects of Tollo overexpression on Dpp signaling and cell sorting, loss‐of‐function tollo mutants are viable with normal external morphology. Our data suggest that Tollo function might be redundant but is sufficient to antagonize Dpp signaling and induce sorting of Tollo expressing cells from the wing cells to develop proximal cell fate. genesis 44:541–549, 2006. © 2006 Wiley‐Liss, Inc.
Chemical and Structural Features of NMe2Et Adducts of the Silanimines Me2Si=NSitBu3 and tBu2Si=NSiCltBu2
Authors: Lerner Hans‐Wolfram , Bolte Michael , Schurz Klaus , Wiberg Nils , Baum Gerhard , Fenske Dieter , Bats Jan W. , Wagner Matthias 
Published: October 2006

AbstractIn contrast to tBu2SiN(Li)SiXtBu2 (X = Cl, tBu), the silyl amide Me2SiClN(Li)SitBu3 is unstable towards LiCl elimination, which means that the silanimine donor adduct Me2Si=NSitBu3·NMe2Et can be synthesized in high yield from the reaction of Me2SiClN(H)SitBu3 with nBuLi inthe presence of NMe2Et. The silanimine adduct tBu2Si=NSiCltBu2·NMe2Et, with bulky tBu substituents at the unsaturated Si center, is accessible by treating the donor‐free silanimine tBu2Si=NSiCltBu2 with NMe2Et. X‐rayquality crystals of the silanimine amine adduct Me2Si=NSitBu3·NMe2Et (monoclinic, P21/n) were grown from pentane at –25 °C. During thermolysis of the adducts Me2Si=NSitBu3·NMe2Et and tBu2Si=NSiCltBu2·NMe2Et in NMe2Et as solvent a Stevens rearrangement takes place to produce EtN(Me)CH2SiMe2N(H)SitBu3 and EtN(Me)CH[Me2SiN(H)SitBu3]2, and EtN(Me)CH2SitBu2N(H)SiCltBu2, respectively. In contrast, the thermolysis of Me2Si=NSitBu3·NMe2Et in vacuo gives the silanimine dimer (Me2SiNSitBu3)2(monoclinic, P21/n) in 80 % yield. The benzophenone imine Ph2C=NSitBu3 (triclinic, P$\bar {1}$) was obtained from the Wittig‐like reaction of Me2Si=N‐SitBu3 with Ph2CO. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
Use of multivariate analysis for optimization of separation parameters and prediction of migration time, resolution, and resolution per unit time in micellar electrokinetic chromatography
Authors: Williams Alicia A. , Fakayode Sayo O. , Huang Xiaodong , Warner Isiah M. 
Published: October 2006

AbstractThe optimization of separation parameters in chromatography for better separation and resolution of analytes continues to be a labor intensive procedure usually performed by a trial and error method. A multivariate analysis in the form of multilinear regression (MLR) is used to optimize separation parameters and predict the migration behavior, resolution, and resolution per unit time of achiral (4‐chlorophenol, pentachlorophenol, clonazepam, and diazepam) and chiral (1,1'‐binaphthyl 2,2'‐dihydrogen phosphate (BNP), and 1,1'‐bi‐2‐naphthol (BOH)) compounds in MEKC. Separations of achiral and chiral analytes were performed using an achiral (poly(sodium N‐undecylenic sulfate)) molecular micelle and chiral (poly(sodium N‐undecanoyl‐L‐leucylvalinate) or poly(sodium N‐undecanoyl‐L‐isoleucylvalinate)) molecular micelle, respectively, at various operating temperatures, applied voltages, pH values, and molecular micelle concentrations in the BGE. The separation parameters were subsequently used as input variables for MLR models. The models were validated with independent samples. The root‐mean‐square percent relative error (RMS%RE) is used as a figure of merit for characterizing the performance of the migration time, resolution, and resolution per unit time models. The RMS%RE obtained for predicted migrated times, resolutions, and resolution per unit time of 4‐chlorophenol, pentachlorophenol, clonazepam, diazepam, BNP, and BOH ranged between 8 and 19%. The same experimental procedure was used to optimize the separation parameters of six other chiral analytes of different compound class. The predicted migration times, resolutions, and resolution per unit time of the chiral as well as the achiral analytes compare favorably with the experimental migration times and resolutions, indicating versatility and wide applicability of the technique in MEKC.
Evolution from a freshwater to saline lake: a climatic or hydrogeological change? The case of Gallocanta Lake (northeast Spain)
Authors: Luzón A. , Pérez A. , Sánchez J. A. , Soria A. R. , Mayayo M. J. 
Published: October 2006

AbstractSedimentological and hydrogeological studies are combined in order to investigate the environmental conditions of the lacustrine sedimentation during the Holocene in Gallocanta Lake in Spain. Six units have been identified in the sedimentary succession, based on sedimentological facies and mineralogy, and three depositional stages have been defined: (1) alluvial, (2) carbonate lake system, (3) ephemeral carbonate–saline lake system. The transition between stages 2 and 3 implies a reduction in water inflows to the lake. The δ13C isotopical analysis of dolomites points to decaying organic matter as a source of carbon for the dissolved inorganic carbon and evinces that the δ13C variations in the lake were probably controlled by organic processes. On the other hand, δ18O values could be controlled by modifications in the hydrological system and not necessarily by climatic changes. In this sense, from the hydrological study, three aquifers can be defined: Triassic, Jurassic–Cretaceous and Cenozoic aquifers. The lack of coincidence between the surface and subterranean watershed suggests that the transition between the second and third stages is controlled by a shift of the subterranean watershed. Copyright © 2006 John Wiley & Sons, Ltd.
The effect of long‐term storage of fish meals on the response of chickens to the amino acid supplementation of diets containing such meals
Authors: Wessels Jacobus P. H. , Moodie Iain 
Published: October 2006

AbstractIn three experiments fish meals of different origin and treatment were given to chickens in short‐term feeding trials after varying storage periods. Diets were supplemented with amino acids in these experiments, most of which were of factorial design, in such a way that the first limiting amino acids of the meals could be established. The body moisture content of three or four groups of chickens per treatment served as criterion of nitrogen (N) retention by the chickens. In the first experiment consisting of two trials, a pilchard meal stored for over 70 weeks and an anchovy meal stored for 74 weeks were both shown to have methionine as first limiting amino acid but only whenthe former was stabilised with ethoxyquin and the latter was not. Several of the trials in the second experiment involved fish meals stored under nitrogen. Such meals have not been used in similar experiments before. L‐lysine hydrochloride supplementation of diets which contained full (i.e. with solubles added) fish meals depressed N retention, as did L‐isoleucine when added at a high level (0.5%). This effect of lysine was also demonstrated when used in a diet which contained a commercial pilchard full meal which had been stored for about 6 months. On the other hand, lysine was shown to be the first limiting amino acid of a fish meal to which solubles had not been added. When the stabilised full meal used in Experiment II had been in storage for 108 weeks a positive reponse in chicken N retention to methionine supplementation of diets containing this meal occurred (Trial IId). In subsequent trials with these ageing stabilised meals cystine and/or methionine supplementation and later particularly supplementation with glycine led to better N retention by chickens. Unstabilised stored meals seem to have a sulphur‐containing amino acid as first limiting. In most instances where comparison was possible diets containing stabilised fish meals gave greater chicken body N retention than those containing similar unstabilised meal.