bluuebunny/crossref_metadata_2025_split huggingface dataset:
Heteroannulation of Nitroketene N,S‐Arylaminoacetals with POCl3: A Novel Highly Regioselective Synthesis of Unsymmetrical 2,3‐Substituted Quinoxalines.
Authors: Venkatesh C. , Singh B. , Mahata P. K. , Ila H. , Junjappa H. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
An Iodoacetamide‐Based Free Radical Cyclization Approach to the 7,12‐Dihydro‐indolo[3,2‐d][1]benzazepin‐6(5H)‐one (Paullone) System.
Authors: Bremner John B. , Sengpracha Waya 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Palladium‐Catalyzed Phosphorus—Carbon Bond Formation: Cross‐Coupling Reactions of Alkyl Phosphinates with Aryl, Heteroaryl, Alkenyl, Benzylic, and Allylic Halides and Triflates.
Authors: Bravo‐Altamirano Karla , Huang Zhihong , Montchamp Jean‐Luc 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
New Cytotoxic Bisindole Alkaloids with Protein Tyrosine Kinase Inhibitory Activity from a Myxomycete Lycogala epidendrum.
Authors: Hosoya Takahiro , Yamamoto Yukinori , Uehara Yoshimasa , Hayashi Masahiko , Komiyama Kanki , Ishibashi Masami 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Bioactive Marine Metabolites. Part 132. Mycapolyols A—F, New Cytotoxic Metabolites of Mixed Biogenesis from the Marine Sponge Mycale izuensis
Authors: Phuwapraisirisan Preecha , Matsunaga Shigeki , Fusetani Nobuhiro 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Exploitation of CO‐Operative Directed ortho‐Metalation (DoM) by 1,3‐Related ‐OMOM Groups in the Development of a Fully Regio‐Controlled Synthesis of Atranol from Orcinol.
Authors: Banwell Martin G. , Chand Satish 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Cobalt‐Free Oxygen‐Permeable Membrane Based on the Perovskite‐Type Oxide Ba0.5Sr0.5Zn0.2Fe0.8 O3‐δ.
Authors: Wang Haihui , Tablet Cristina , Feldhoff Armin , Caro Juergen 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Pulsed Gradient Spin—Echo (PGSE) Diffusion and 1H,19F Heteronuclear Overhauser Spectroscopy (HOESY) NMR Methods in Inorganic and Organometallic Chemistry: Something Old and Something New
Authors: Pregosin Paul S. , Kumar P. G. Anil , Fernandez Ignacio 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Heavy‐Metal Aromatic and Conjugated Species: Rings, Oligomers, and Chains of Tin in Li9‐xEuSn6+x, Li9‐xCaSn6+x, Li5Ca7Sn11, Li6Eu5Sn9, LiMgEu2Sn3, and LiMgSr2Sn3.
Authors: Todorov Iliya , Sevov Slavi C. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Characterization of Ti‐HMS and CoMo/Ti‐HMS Oxide Materials with Varying Ti Content.
Authors: Zepeda T. A. , Fierro J. L. G. , Pawelec B. , Nava R. , Klimova T. , Fuentes G. A. , Halachev T. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Attempts to Prepare t‐BuCN5S3 and the Unexpected Isolation of a Covalent Modification of Tetrasulfur‐Pentanitrogen Chloride S4N5Cl.
Authors: Knapp Carsten , Lork Enno , Borrmann Tobias , Stohrer Wolf‐Dieter , Mews Ruediger 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Unusual Syntheses, Structures, and Electronic Properties of Compounds Containing Ternary, T3‐Type Supertetrahedral M/Sn/S Anions [M5Sn(μ3‐S)4 (SnS4)4]10‐ (M: Zn, Co).
Authors: Zimmermann Christian , Anson Christopher E. , Weigend Florian , Clerac Rodolphe , Dehnen Stefanie 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Template‐Assisted Solvothermal Synthesis of Five Copper(I)‐Thioantimonate(III) Composites: Crystal Structures and Optical and Thermal Properties of (C6N2H18) 0.5Cu2SbS3, (C4N3H15) 0.5Cu2SbS3, (C8N4H22) 0.5Cu2SbS3, (C4N3H14) Cu3Sb2S5, and (C6N4H20) 0.5Cu3Sb2S5.
Authors: Spetzler V. , Naether C. , Bensch W. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Carbocycles via Enantioselective Inter‐ and Intramolecular Iridium‐Catalyzed Allylic Alkylations.
Authors: Streiff Stephane , Welter Carolin , Schelwies Mathias , Lipowsky Gunter , Miller Nicole , Helmchen Guenter 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Application of Chiral Spiro Phospholane Ligand in Pd‐Catalyzed Asymmetric Allylation of Aldehydes with Allylic Alcohols.
Authors: Zhu Shou‐Fei , Yang Yun , Wang Li‐Xin , Liu Bin , Zhou Qi‐Lin 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Combined Ruthenium(II) and Lipase Catalysis for Efficient Dynamic Kinetic Resolution of Secondary Alcohols. Insight into the Racemization Mechanism.
Authors: Martin‐Matute Belen , Edin Michaela , Bogar Krisztian , Kaynak Betuel , Baeckvall Jan‐E. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Silica Gel Supported Sodium Hydrogen Sulfate as an Efficient and Reusable Heterogeneous Catalyst for the Synthesis of Imines in Solvent‐Free Conditions under Microwave Irradiation.
Authors: Gopalakrishnan Mannathusamy , Sureshkumar Purushothaman , Kanagarajan Vijayakumar , Thanusu Jeyaraman , Govindaraju Ramalingam 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Simple and Efficient Copper‐Catalyzed Procedure for the Hydrosilylation of Hindered and Functionalized Ketones.
Authors: Diez‐Gonzalez Silvia , Kaur Harneet , Zinn Fabiano Kauer , Stevens Edwin D. , Nolan Steven P. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Acetonyltriphenylphosphonium Bromide (ATPB): A Versatile Reagent for the Acylation of Alcohols, Phenols, Thiols and Amines and for 1,1‐Diacylation of Aldehydes under Solvent‐Free Conditions
Authors: Khan Abu T. , Choudhury Lokman H. , Ghosh Subrata 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Simpler and Greener Protocol for the Preparation of β‐Acetylamino Ketones by a One‐Pot Reaction of Aryl Aldehydes, Enolisable Ketones, Acetyl Chloride and Acetonitrile in the Presence of Zeolite Hβ as a Reusable Catalyst.
Authors: Bhat Ramakrishna P. , Raje Vivek P. , Alexander Varughese M. , Patil Sachin B. , Samant Shriniwas D. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Iodine‐Catalyzed Michael Addition of Mercaptans to α,β‐Unsaturated Ketones under Solvent‐Free Conditions.
Authors: Chu Cheng‐Ming , Gao Shijay , Sastry M. N. V. , Yao Ching‐Fa 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Discovery of Non‐Steroidal Mifepristone Mimetics: Pyrazoline‐Based PR Antagonists.
Authors: Jones David G. , Liang Xi , Stewart Eugene L. , Noe Robert A. , Kallander Lara S. , Madauss Kevin P. , Williams Shawn P. , Thompson Scott K. , Gray David W. , Hoekstra William J. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Lewis Acid‐Catalyzed Stereospecific Ring Expansion of Aziridine‐2‐carboxylates to Imidazolidin‐2‐ones.
Authors: Kim Min Sung , Kim Yong‐Woo , Hahm Heung Sik , Jang Jae Won , Lee Won Koo , Ha Hyun‐Joon 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Discovery of New Diphenyloxazole Derivatives Containing a Pyrrolidine Ring: Orally Active Prostacyclin Mimetics. Part 2.
Authors: Hattori Kouji , Okitsu Osamu , Tabuchi Seiichiro , Taniguchi Kiyoshi , Nishio Mie , Koyama Satoshi , Seki Jiro , Sakane Kazuo 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Design and Synthesis of New 2‐Substituted‐5‐(2‐benzylthiophenyl)‐1,3,4‐oxadiazoles as Benzodiazepine Receptor Agonists.
Authors: Zarghi Afshin , Faizi Mehrdad , Shafaghi Bijan , Ahadian Avideh , Khojastehpoor Hamid R. , Zanganeh Vahideh , Tabatabai Sayyed A. , Shafiee Abbas 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Convenient Synthesis and Chemical Properties of 3‐Acylamino‐6‐polyfluoroalkyl‐2H‐pyran‐2‐ones.
Authors: Gerus Igor I. , Tolmachova Nataliya A. , Vdovenko Sergey I. , Froehlich Roland , Haufe Guenter 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
6‐Aryl‐4‐methylsulfanyl‐2H‐pyran‐2‐one‐3‐carbonitriles as PPAR‐γ Activators.
Authors: Sharon Ashoke , Pratap Ramendra , Vatsyayan Rit , Maulik Prakas R. , Roy Uma , Goel Atul , Ram Vishnu Ji 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Formation of the Unexpected 3‐Alkylated Flavonoids in the Alkylation of B‐Ring Substituted 5,7‐Dihydroxy Flavones.
Authors: Wang Cai‐Ling , Zheng Xing , Meng Wei‐Dong , Li Hong‐Qi , Qing Feng‐Ling 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Formal [3 + 3] Cycloaddition Reaction. Part 5. An Enantioselective Intramolecular Formal Aza‐[3 + 3] Cycloaddition Reaction Promoted by Chiral Amine Salts.
Authors: Gerasyuto Aleksey I. , Hsung Richard P. , Sydorenko Nadiya , Slafer Brian 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of New Mannich Bases of Arylpyridazinones as Analgesic and Antiinflammatory Agents.
Authors: Goekce Mehtap , Bakir Goekcen , Sahin Mustafa Fethi , Kuepeli Esra , Yesilada Erdem 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Biological Evaluation of Quinoxaline‐5,8‐diones that Inhibit Vascular Smooth Muscle Cell Proliferation.
Authors: Chung Hwa‐Jin , Jung Ok‐Jai , Chae Mi Jin , Hong Sung‐Yu , Chung Kwang‐Hoe , Lee Sang Kook , Ryu Chung‐Kyu 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Cyclopropanation and Carbonyl Olefination Utilizing 2‐(Alk‐1‐yn‐1‐yl)‐2‐(trialkylsilyl)‐1,3‐dithianes via Regioselective Generation of Titanium Alkynylcarbene Complexes.
Authors: Takeda Takeshi , Ozaki Makoto , Kuroi Shuichi , Tsubouchi Akira 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Studies on Terpenoids Produced by Actinomycetes. Isolation and Structural Elucidation of Antioxidative Agents, Naphterpins B and C.
Authors: Takagi Hiroshi , Motohashi Keiichiro , Miyamoto Toru , Shin‐ya Kazuo , Furihata Kazuo , Seto Haruo 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
3‐(1,2,3‐Triazol‐1‐yl)‐1‐thio‐galactosides as Small, Efficient, and Hydrolytically Stable Inhibitors of Galectin‐3.
Authors: Salameh Bader A. , Leffler Hakon , Nilsson Ulf J. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Aurafuron A and B, New Bioactive Polyketides from Stigmatella aurantiaca and Archangium gephyra (Myxobacteria). Fermentation, Isolation, Physico‐chemical Properties, Structure and Biological Activity.
Authors: Kunze Brigitte , Reichenbach Hans , Mueller Rolf , Hoefle Gerhard 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Phenatic Acids A and B, New Potentiators of Antifungal Miconazole Activity Produced by Streptomyces sp. K03‐0132.
Authors: Fukuda Takashi , Matsumoto Atsuko , Takahashi Yoko , Tomoda Hiroshi , Omura Satoshi 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
DNA Binding Specificity and Cytotoxicity of Novel Antitumor Agent Ge132 Derivatives.
Authors: Shangguan Guoqiang , Xing Feifei , Qu Xiaogang , Mao Jianhua , Zhao Dan , Zhao Xuejian , Ren Jinsong 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Progress in Wide Bandgap Ferromagnetic Semiconductors and Semiconducting Oxides
Authors: Pearton S. J. , Abernathy C. R. , Thaler G. T. , Frazier R. M. , Heo Y. H. , Ivill M. , Norton D. P. , Park Y. D. 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Phospholipid Mesophases at Solid Interfaces: In situ X‐Ray Diffraction and Spin‐Label Studies
Authors: Rappolt Michael , Amenitsch Heinz , Strancar Janez , Teixeira Cilaine V. , Kriechbaum Manfred , Pabst Georg , Majerowicz Monika , Laggner Peter 
Published: September 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Preparative enantiomeric separation of new aromatase inhibitors by HPLC on polysaccharide‐based chiral stationary phases: Determination of enantiomeric purity and assignment of absolute stereochemistry by X‐ray structure analysis
Authors: Danel Cecile , Foulon Catherine , Guelzim Abdelhalim , Park Chang Ha , Bonte Jean‐Paul , Vaccher Claude 
Published: September 2005

AbstractThe development of high‐performance liquid chromatography methods on polysaccharide‐based stationary phases (cellulose or amylose derivatives) has permitted preparative enantioseparations of various 6‐[1(imidazol‐1‐yl)‐1‐phenylmethyl]‐3‐methyl‐1,3‐benzoxazol‐2(3H)‐one and 6‐[1(imidazol‐1‐yl)‐1‐phenylmethyl]‐3‐methyl‐1,3‐benzothiazol‐2(3H)‐one, aromatase inhibitors, with satisfactory yields. Analytical enantioseparation methods using both UV and evaporative light‐scattering detection (ELSD) were validated to determine the enantiomeric purity of these compounds. Using UV detection, linear calibration curves in the range from 4 × 10−6 to 4.8 × 10−4 M range were obtained; repeatability, limits of detection (LD), and quantification (LQ) were determined: LD varied, for the various solutes, from 1 to 80 μg/l and from 2.05 to 10.05 mg/l with UV detection and ELSD, respectively. Single‐crystal X‐ray analysis was successful in determining the absolute configuration of the individual enantiomers. The relationship between retention order and absolute configuration of the enantiomers was established. © 2005 Wiley‐Liss, Inc. Chirality 17:600–607, 2005.
Xnr2 and Xnr5 unprocessed proteins inhibit Wnt signaling upstream of dishevelled
Authors: Onuma Yasuko , Takahashi Shuji , Haramoto Yoshikazu , Tanegashima Kousuke , Yokota Chika , Whitman Malcolm , Asashima Makoto 
Published: September 2005

AbstractNodal and Nodal‐related proteins activate the Activin‐like signal pathway and play a key role in the formation of mesoderm and endoderm in vertebrate development. Recent studies have shown additional activities of Nodal‐related proteins apart from the canonical Activin‐like signal pathway. Here we report a novel function of Nodal‐related proteins using cleavage mutants of Xenopus nodal‐related genes (cmXnr2 and cmXnr5), which are known to be dominant‐negative inhibitors of nodal family signaling. cmXnr2 and cmXnr5 inhibited both BMP signaling and Wnt signaling without activating the Activin‐like signal in animal cap assays. Pro region construct of Xnr2 and Xnr5 did not inhibit Xwnt8, and pro/mature region chimera mutant cmActivin‐Xnr2 and cmActivin‐Xnr5 also did not inhibit Xwnt8 activity. These results indicate that the pro domains of Xnr2 and Xnr5 are necessary, but not sufficient, for Wnt inhibition, by Xnr family proteins. In addition, Western blot analysis and immunohistochemistry analysis revealed that the unprocessed Xnr5 protein is stably produced and secreted as effectively as mature Xnr5 protein, and that the unprocessed Xnr5 protein diffused in the extracellular space. These results suggest that unprocessed Xnr2 and Xnr5 proteins may be involved in inhibiting both BMP and Wnt signaling and are able to be secreted to act on somewhat distant target cells, if these are highly produced. Developmental Dynamics 234:900–910, 2005. © 2005 Wiley‐Liss, Inc.
Ptena and ptenb genes play distinct roles in zebrafish embryogenesis
Authors: Croushore Jessica A. , Blasiole Brian , Riddle Ryan C. , Thisse Christine , Thisse Bernard , Canfield Victor A. , Robertson Gavin P. , Cheng Keith C. , Levenson Robert 
Published: September 2005

AbstractPTEN is a tumor suppressor gene associated with multiple tumor types. PTEN function is essential for early embryonic development and is involved in the regulation of cell size, number, and survival. By dephosphorylating PIP3, PTEN normally acts to inhibit the PI3‐Kinase/AKT pathway. Here we have identified two zebrafish orthologs, ptena and ptenb, of the single mammalian PTEN gene and analyzed the role of these genes in zebrafish development. Ptena transcripts were expressed throughout the embryo at early somitogenesis. By 24 hpf, expression was predominant in the central nervous system, axial vasculature, retina, branchial arches, ear, lateral line primordium, and pectoral fin bud. Ptenb was also ubiquitously expressed early in somitogenesis, but transcripts became more restricted to the somites and central nervous system as development progressed. By 48 hpf, ptena and ptenb were expressed predominantly in the central nervous system, branchial arches, pectoral fins, and eye. Antisense morpholinos were used to knock down translation of ptena and ptenb mRNA in zebrafish embryos. Knockdown of either pten gene caused increased levels of phosphorylated Akt in morphant embryos, indicating that Ptena and Ptenb each possess PIP3 lipid phosphatase activity. Ptena morphants had irregularities in notochord shape (73%), vasculogenesis (83%), head shape (72%), and inner ear development (59%). The most noticeable defects in ptenb morphants were upward hooked tails (73%), domed heads (83%), and reduced yolk extensions (90%). These results indicate that ptena and ptenb encode functional enzymes and that each pten gene plays a distinct role during zebrafish embryogenesis. Developmental Dynamics 234:911–921, 2005. © 2005 Wiley‐Liss, Inc.
Identification of a novel gene involved in asexual organogenesis in the budding ascidian Botryllus schlosseri
Authors: Laird Diana J. , Chang Wen‐Teh , Weissman Irving L. , Lauzon Robert J. 
Published: September 2005

AbstractDevelopment via regeneration or budding shares some known genetic pathways with embryogenesis, but no concerted effort has been made to identify genes unique to asexual development. We have identified a novel gene that plays a role in cyclical bud formation and asexual organogenesis in the colonial ascidian Botryllus schlosseri. Athena mRNA is transcribed at high levels during the 24‐ to 36‐hr interval of programmed cell death and new bud initiation at the conclusion of the budding cycle (takeover). Knockdown of Athena by RNAi and antisense morpholinos induced defects in the development of new buds ranging from retardation in growth and abnormal organogenesis to hollow buds lacking organs. As genetic intervention in this organism has not been possible, this study establishes the use of RNAi and morpholinos in Botryllus as well as describing the knockdown phenotype of a new gene. Developmental Dynamics 234:997–1005, 2005. © 2005 Wiley‐Liss, Inc.
Using the TPS method for determining the thermal properties of concrete and wood at elevated temperature
Authors: Adl‐Zarrabi Bijan , Boström Lars , Wickström Ulf 
Published: September 2005

AbstractThe transient plane source (TPS) method is shown to be very promising for determining thermal properties of materials at room temperature as well as temperatures up to 700°C. To investigate the applicability of the method it has been used in the study for determining thermal properties of wood (spruce) and concrete. Conductivity (λ) and diffusivity (α) were determined simultaneously.The thermal properties thus obtained have been compared with some values found in literature. The paper also presents results where calculations using properties obtained with the TPS method are compared with fire test measurements. The results are very encouraging. Copyright © 2005 John Wiley & Sons, Ltd.
Time‐dependent flow across a step: the slip with friction boundary condition
Authors: John Volker , Liakos Anastasios 
Published: September 2005

AbstractThe paper studies numerically the slip with friction boundary condition in the time‐dependent incompressible Navier–Stokes equations. Numerical tests on two‐ and three‐dimensional channel flows across a step using this boundary condition on the bottom wall are performed. The influence of the friction parameter on the flow field is studied and the results are explained according to the physics of the flow. Due to the stretching and tilting of vortices, the three‐dimensional results differ in many respects from the two‐dimensional ones. Copyright © 2005 John Wiley & Sons, Ltd.
A simple procedure for simulating surge infiltration using first‐surge infiltrometer data
Authors: Mahmood Sajid , Latif Muhammad 
Published: September 2005

AbstractThe objective of this study was to modify a ring infiltrometer and to develop a simple and generic technique for simulating cumulative infiltration under constant on‐time surge cycles. A ring infiltrometer was modified by connecting a pipe arm for inward and outward water flow to the ring and from the ring to the pipe to create on–off surge cycles respectively. The Kostiakov infiltration equation was modified by introducing“surge factors” to simulate infiltration data for subsequent surges, using first surge infiltrometer data. The modified form of the Kostiakov equation is called the, “Azeemi–Kostiakov equation”. The unknown parameters of the Kostiakov equation were determined by applying the two‐point technique. Results of the study revealed that the infiltration data simulated by the Azeemi–Kostiakov equation matched closely with those collected from the surge‐ring infiltrometer. A significant reduction in the cumulative infiltration during different surges was also observed which varies from 61 to 84% for the first surge and from 30 to 61% for the subsequent surges. On an overall basis, the significant advantage of the Azeemi–Kostiakov equation is its application in simulating cumulative infiltration of subsequent surges by successfully using limited infiltrometer data. The validity of the Azeemi–Kostiakov equation outside the conditions of the experiments and for varying on–off surge cycles needs to be verified in order to extend its applicability. If this is done, the prior estimation of infiltration for a desired set of on–off surge cycles through this method would permit planning of surge irrigation studies for efficient water management. Copyright © 2005 John Wiley & Sons, Ltd.