Your search returned 299934 results.

Results
	299921.	Development of a Diversity-Based Approach for the Discovery of Stereoselective Polymerization Catalysts: Identification of a Catalyst for the Synthesis of Syndiotactic Polypropylene This work was supported by the Cornell Center for Materials Research (CCMR), a Materials Research Science and Engineering Center of the National Science Foundation (DMR-9632275), and the Exxon Chemical Corporation. G.W.C. gratefully acknowledges an NSF Career Award (CHE-9875261), a Camille and Henry Dreyfus New Faculty Award, a Research Corporation Research Innovation Award, an Alfred P. Sloan Research Fellowship, an Arnold and Mabel Beckman Foundation Young Investigator Award, a Camille Dreyfus Teacher-Scholar Award, a 3M Untenured Faculty Grant, an IBM Partnership Award, and a Union Carbide Innovation Recognition Award. [electronic resource] Publication details: Angewandte Chemie (International ed. in English) Oct 2000 In: Angewandte Chemie (International ed. in English) vol. 39 Availability: No items available. Save to lists Add to cart (remove)
	299922.	Unprecedented Detection of Distinct Barriers Involving Formally Enantiotopic Substituents: Phenyl Rotation in Solid Diphenyl Sulfoxide Conformational Studies by Dynamic NMR. Part 82. For Part 80 see ref. 1a, for Part 81 see ref. 1b. We thank J. E. Anderson (University College, London, UK), S. E. Biali (Hebrew University, Jerusalem, Israel), R. K. Harris (University of Durham, UK), W. B. Jennings (University College, Cork, Ireland), A. Rassat (École Normale Superieure, Paris, France) for critical reading of the manuscript, and I.Co.C.E.A., CNR, Bologna for access to the 400-MHz and solid-state NMR spectroscopy facilities. Financial support was received from MURST (national project "Stereoselection in Organic Synthesis") and from the University of Bologna (Funds for selected research topics 1999-2001). [electronic resource] by Casarini, Daniele Lunazzi, Lodovico Mazzanti, Andrea Publication details: Angewandte Chemie (International ed. in English) Jul 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Availability: No items available. Save to lists Add to cart (remove)
	299923.	Total Synthesis of (+)-Eurylene and (+)-14-Deacetyleurylene We thank K. Ujihara (Sumitomo Chemical Co.) for generously supplying an authentic sample and a copy of the (1)H NMR spectrum of synthetic eurylene. We are grateful to Prof. H. Iio and Dr. Y. Usuki (Osaka City University) for the HPLC purification. T.I. thanks the Japan Society for the Promotion of Science for providing a JSPS Research Fellowship for Young Scientists. This research was supported by the Naito Foundation, the Fujisawa Pharmaceutical Award in Synthetic Organic Chemistry, Japan, the SUNBOR GRANT from the Suntory Institute for Bioorganic Research, and a Grant-in Aid for Encouragement of JSPS Research Fellows from the Japan Society for the Promotion of Science. [electronic resource] Publication details: Angewandte Chemie (International ed. in English) Nov 2000 In: Angewandte Chemie (International ed. in English) vol. 39 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	299924.	Studies on the Biosynthesis of Paraherquamide: Synthesis and Incorporation of a Hexacyclic Indole Derivative as an Advanced Metabolite This work was supported by the National Institutes of Health (Grant no. CA70375 to R.M.W.). We wish to acknowledge the American Chemical Society Division of Organic Chemistry Fellowship (sponsored by SmithKline Beecham) and the Pharmacia-Upjohn Company for financial support (to E.M.S.). Mass spectra were obtained on instruments supported by the National Institutes of Health Shared Instrumentation Grant (No. GM49631). We also wish to thank Professor Dean Crick of the Department of Microbiology at Colorado State University for helpful discussions. J.F.S.-C. thanks the DGICYT of Spain for a research grant (project no. PB98-1438). [electronic resource] by Stocking, Emily M Sanz-Cervera, Juan F Williams, Robert M Publication details: Angewandte Chemie (International ed. in English) Apr 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	299925.	Synthesis and Spectroscopic Characterization of Pyrrolidyl and Piperidyl Dithioformate Derivatives of Dimethyltellurium(IV) Compounds. Crystal Structures of Me(2)Te[S(2)CN(CH(2))(3)CH(2)](2), Me(2)Te[S(2)CN(CH(2))(4)CH(2)](2), Me(2)Te{[S(2)CN(CH(2))(3)CH(2)][S(2)CN(CH(2))(4)CH(2)]}, Me(2)TeCl[S(2)CN(CH(2))(3)CH(2)], Me(2)TeBr[S(2)CN(CH(2))(3)CH(2)], Me(2)TeI[S(2)CN(CH(2))(3)CH(2)], Me(2)TeCl[S(2)CN(CH(2))(4)CH(2)], and Me(2)TeI[S(2)CN(CH(2))(4)CH(2)]. [electronic resource] by Drake, John E Yang, Jincai Publication details: Inorganic chemistry Apr 1997 In: Inorganic chemistry vol. 36 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	299926.	New 10-membered inorganic heterocyclic diphosphanes, PhN(PX)(2)[(-OC(6)H(2)((T)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)] (x = cl, f). Synthesis and transition metal complexes (molybdenum(0), ruthenium(II), palladium(II), and platinum(II)) of heterocyclic diphosphanes. crystal and molecular structures of the chloro derivative, PhN(PCl)(2)[(-OC(6)H(2)((t)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)], and of a molybdenum(0) complex of the fluoro derivative, [Mo(CO)(3)[eta(3)-PhN(PF)(2)[(-OC(6)H(2)((t)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)]-kappa P,kappa P,kappa S]]. [electronic resource] by Balakrishna, M S Panda, R Mague, J T Producer: 20020104 In: Inorganic chemistry vol. 40 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	299927.	The First Stable Diazonium Ion on Solid Support-Investigations on Stability and Usage as Linker and Scavenger in Solid-Phase Organic Synthesis Nitrogen-Based Linkers, Part 8. This work was supported by the Fonds der Chemischen Industrie (Liebig-Stipend to S.B.) and the Deutsche Forschungsgemeinschaft (BR1750-1). We thank Prof. Dr. D. Enders for the generous support of our work. The companies BASF AG, Bayer AG, Degussa-Hüls AG, and Calbiochem-Novabiochem AG are acknowledged for donations of chemicals and Grünenthal GmbH for financial support. For DSC measurements we also thank Prof. Dr. Franz-Josef Wortmann and Dr. Numan Özgün at the Deutsches Wollforschungsinstitut (DWI) at the RWTH Aachen. Part 7: M. Lormann, S. Dahmen, S. Bräse, Tetrahedron Lett. 2000, 41, 3813-3816. [electronic resource] Publication details: Angewandte Chemie (International ed. in English) Oct 2000 In: Angewandte Chemie (International ed. in English) vol. 39 Availability: No items available. Save to lists Add to cart (remove)
	299928.	"Cap-Tag"-Novel Methods for the Rapid Purification of Oligosaccharides Prepared by Automated Solid-Phase Synthesis Financial support from the donors of the Petroleum Research Fund, administered by the ACS (ACS-PRF 34649-G1), Merck (Predoctoral Fellowship for E.R.P.), Boehringer-Ingelheim (Predoctoral Fellowship for E.R.P.), and the NIH (Biotechnology Training Grant for M.C.H.) is gratefully acknowledged. Funding for the MIT-DCIF Inova 501 was provided by the NSF (Award CHE-9808061). Funding for the MIT-DCIF Avance (DPX) 400 was provided by the NIH (Award 1S10RR13886-01). We thank Silicycle (Quebec City, Canada) for the generous gift of fluorous silica gel and isocyanate silica gel scavenger resin. We thank Dr. O. Plante for helpful discussions and help with the automated oligosaccharide synthesizer. [electronic resource] by Palmacci, Emma R Hewitt, Michael C Seeberger, Peter H Publication details: Angewandte Chemie (International ed. in English) Dec 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	299929.	The Spongistatins: Architecturally Complex Natural Products-Part Two: Synthesis of the C(29-51) Subunit, Fragment Assembly, and Final Elaboration to (+)-Spongistatin 2 Financial support was provided by the National Institutes of Health (National Cancer Institute) through Grant CA-70329, a NIH Postdoctoral Fellowship to C.S.B., a Japan Society for Promotion of Science Fellowship to N.M., and a Royal Society Fulbright Fellowship to V.A.D. We also thank the Daiichi Pharmaceutical Co., Ltd, and the Tanabe Seiyaku Co., Ltd for financial support. Finally we thank Dr George T. Furst, Dr. Patrick J. Carroll, and Dr. Rakesh Kohli of the University of Pennsylvania Spectroscopic Service Center for assistance in securing and interpreting high-field NMR spectra, X-ray crystal structures, and mass spectra, respectively. [electronic resource] by Smith III, Amos B Lin, Qiyan Doughty, Victoria A Zhuang, Linghang McBriar, Mark D Kerns, Jeffrey K Brook, Christopher S Murase, Noriaki Nakayama, Kiyoshi Publication details: Angewandte Chemie (International ed. in English) Jan 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Availability: No items available. Save to lists Add to cart (remove)
	299930.	The Spongistatins: Architecturally Complex Natural Products-Part One: A Formal Synthesis of (+)-Spongistatin 1 by Construction of an Advanced ABCD Fragment Financial support was provided by the National Institutes of Health (National Cancer Institute) through Grant CA-70329, NIH Postdoctoral Fellowships to A.M.B. and W.H.M., a Japan Society for Promotion of Science Fellowship to N.M., and a Royal Society Fulbright Fellowship to V.A.D. We also thank the Daiichi Pharmaceutical Co., Ltd, and the Tanabe Seiyaku Co., Ltd for financial support. Finally we thank Dr. George T. Furst, Dr. Patrick J. Carroll, Dr. Rakesh Kohli, and Mr John Dykins of the University of Pennsylvania Spectroscopic Service Center for assistance in securing and interpreting high-field NMR spectra, X-ray crystal structures, and mass spectra. [electronic resource] by Smith III, Amos B Doughty, Victoria A Lin, Qiyan Zhuang, Linghang McBriar, Mark D Boldi, Armen M Moser, William H Murase, Noriaki Nakayama, Kiyoshi Sobukawa, Masao Publication details: Angewandte Chemie (International ed. in English) Jan 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Availability: No items available. Save to lists Add to cart (remove)
	299931.	Application of a Planar Chiral eta(5)-Cyclopentadienylrhenium(I)tricarbonyl Complex in Asymmetric Catalysis: Highly Enantioselective Phenyl Transfer to Aldehydes We are grateful to the Deutsche Forschungsgemeinschaft (DFG) within the Collaborative Research Center (SFB) 380 "Asymmetric Synthesis by Chemical and Biological Methods" and the Fonds der Chemischen Industrie for financial support and to Dr. C. W. Lehmann, MPI für Kohlenforschung, Mülheim, for collecting the X-ray diffraction data. M.K. acknowledges the DFG for a predoctoral fellowship (Graduiertenkolleg). We thank Degussa and Witco for donations of chemicals and Professor Dr. A. Salzer as well as Dipl.-Ing. M. Treu for inspiring discussions. We also appreciate the stimulus of Dr. K. Muñiz for the investigation of the influence of the metal-pi-fragment on catalyses of this type. [electronic resource] by Bolm, Carsten Kesselgruber, Martin Hermanns, Nina Hildebrand, Jens P Raabe, Gerhard Publication details: Angewandte Chemie (International ed. in English) Apr 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Availability: No items available. Save to lists Add to cart (remove)
	299932.	Novel IBX-Mediated Processes for the Synthesis of Amino Sugars and Libraries Thereof We thank Dr. D. H. Huang, Dr. G. Siuzdak, and Dr. R. Chadha for NMR spectroscopic, mass spectrometric, and X-ray crystallographic assistance, respectively, and Prof. H. M. R. Hoffmann and Prof. A. Eschenmoser for helpful discussions. We also thank Dr. Maria-Rosa Rodriguez and Mr. Keith Wilcoxen of these laboratories for early intermediates leading to 9-12. This work was financially supported by the National Institutes of Health (USA), The Skaggs Institute for Chemical Biology, fellowships from the Ministerio de Educacion y Cultura, Spain (J.A.V.) and the National Science Foundation (P.S.B), and grants from Array Biopharma, Pfizer, GlaxoWellcome, Merck, Schering Plough, Hoffmann-LaRoche, Boehringer Ingelheim, DuPont, and Abbott Laboratories. [electronic resource] Publication details: Angewandte Chemie (International ed. in English) Jul 2000 In: Angewandte Chemie (International ed. in English) vol. 39 Availability: No items available. Save to lists Add to cart (remove)
	299933.	The Synthesis of CP-263,114 and CP-225,917: Striking Long-Range Stereocontrol in the Fashioning of C7 Financial support was provided by the National Institutes of Health (Grant nos. CA-28824 and HL-25848 for S.J.D., CA-08748 for the Sloan-Kettering Institute Core Facility). Q.T. gratefully acknowledges the US Department of Defense for a postdoctoral fellowship (U.S. Army grant no. DAMD-17-99-1-9373). We thank the Pfizer Corporation, particularly Dr. T. Kaneko and Dr. T. T. Dabrah for discussions and for providing valuable CP samples from fermentation broth. We are grateful to Dr. Dongfang Meng for his major contributions to this work. We also thank George Sukenick of the Sloan-Kettering Institute Core Facility for mass spectral analyses and assistance in NMR spectroscopic and HPLC analyses, and Sylvi Rusli for mass spectral analyses. [electronic resource] by Tan, Qiang Danishefsky, Samuel J Publication details: Angewandte Chemie (International ed. in English) Feb 2001 In: Angewandte Chemie (International ed. in English) vol. 40 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	299934.	The Synthesis of CP-263,114 and CP-225,917: Striking Long-Range Stereocontrol in the Fashioning of C7 Financial support was provided by the National Institutes of Health (Grant nos. CA-28824 and HL-25848 for S.J.D., CA-08748 for the Sloan-Kettering Institute Core Facility). Q.T. gratefully acknowledges the US Department of Defense for a postdoctoral fellowship (U.S. Army grant no. DAMD-17-99-1-9373). We thank the Pfizer Corporation, particularly Dr. T. Kaneko and Dr. T. T. Dabrah for discussions and for providing valuable CP samples from fermentation broth. We are grateful to Dr. Dongfang Meng for his major contributions to this work. We also thank George Sukenick of the Sloan-Kettering Institute Core Facility for mass spectral analyses and assistance in NMR spectroscopic and HPLC analyses, and Sylvi Rusli for mass spectral analyses. [electronic resource] by Tan, Qiang Danishefsky, Samuel J Publication details: Angewandte Chemie (International ed. in English) Dec 2000 In: Angewandte Chemie (International ed. in English) vol. 39 Availability: No items available. Save to lists Add to cart (remove)